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Service Manual

1. RESISTOR 4 00021 2 FEA 209 544 1 G 75 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation PatNe Note RESSTOR REPGD4MD _ ker RESISTOR RESSTOR R636 RESISTOR REP 622 455 22 Verify portable handsfree func tion Rem RESSTOR rerea ____ _ R Normounted Res REPODAS Re RESSTOR R663 Numen RESISTOR R RESISTOR See revision change awe Norme R679 Normounted 4 00021 2 FEA 209 544 1 G 76 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation PartNo Note RU RESISTOR See revision change we ROW RESISTOR OoOo RESISTOR Soe revision change toe Xm OOOO rerez R803 RESISTOR REP 622 653 1 Verify handsfree earphone func tion R804 RESISTOR REP 622 456 1 Verify handsfree earphone func tion RBS NS RESSTOR _ mw RESSTOR _ REPO Rs RESISTOR See revision change ase _ Resa RESISTOR See revision change aoe
2. Nm Nm Mixockcur wribaesi Nm WesstR _ wm RESISTOR wm wm RESISTOR wm ressor mo _ RESSTOR wur Resistor _ Rar RESISTOR Seevevisonchangewble _ Xo _ O 4 00021 2 209 544 1 94 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs NESSTOR RESSTOR ____ _ Resistor RESISTOR SSS Ray RESSTOR Ru RESSTOR freas Ru resistor RESISTOR See revision change aoe _ THERMISTOR See revision change ase rea Rus RESISTOR See revision change Rus RESSTOR REP OHID O OOOO Rus RESSTOR Notmouned Normo O ooo RESISTOR REPO RESSTOR kso kso RESSTOR RESISTOR See revision change ase RESISTOR See revision chan
3. 5m mum 4 00021 2 FEA 209 544 1 G 79 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 11 3 1 Revision change tables GH688 Revision change table for 2 ROA 117 3307 1 and 2 ROA 117 3307 5 2 1173307 1 Pos Revisions 463 3022 33 RIC 464 3024 1 Not mounted 2 ROA 1173307 5 Part number 4 00021 2 FEA 209 544 1 G 2 117 3307 3 2 1173307 3 112 RJC 464 3024 1 RJC 463 3021 56 RJC 463 3021 27 N 4 e peed All revisions RJE 599 1107 47 RIC 464 3023 68 RJC 464 3023 56 602 revisions RJC 464 3035 68 C603 revisions RJC 464 3035 68 C4 4 4 4 4 5 C604 RJC 464 3035 68 C605 RJC 464 3035 68 606 All revisions 606 All revisions C608 All revisions C609 All revisions C C All revisions MERE 08 09 22 30 57 60 61 10 615 616 625 8 80 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 1173307 1 1173307 5 1173307 3 Pos Revisions Partnumber ee C690 Up to R2A 463 3022 12 C690 R3B and higher RJC 463 3022 12 R3B C690 R2B R3A RJC 463 3022 18 C690 Up to R3A RJC 463 3022 18 When replacing D600 on When replacing D600 on revisions R2B and revisions R2B and pos C690 amp C691 pos C690 amp C691 MUST be replaced with MUST be
4. LL D OL I 7200 201 789 01 7 200 201 789 01 4 00021 2 FEA 209 544 1 G 111 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs 4 00021 2 FEA 209 544 1 G 112 112
5. ERICSSON GH666 GA626 Standard Electrical Repairs Approved according to 1776 2 FEA 209 544 Trouble shooting instruction GH 688 628 Service Manual by Toko 4 0002 1 2 FEA 209 544 1 G ERICSSON 2 GH 66 GA626 Standard Electrical Repairs gt 00 107 4 m Table of contents 3 11 Component classes eene 3 1 2 JADDBEGVIAUODS 4 1 3 Pin placements M 6 No serv or can t place a call 8 Do sn t Start 13 ____ ___ 22 ta LEE EE 30 ario px E 38 SIM fault Insert card 2 1 43 48 Illumination and buzzer 2 55 E 63 Component sts i De ter 65 LET Explanation drei e e tut 65 11 2 Mounting drawing tables 222 66 66 66 11 3 Component list GH688 67 11 5 1 Revision change tables GHOSS eat 80 Revision change table for 2 ROA 117 3307 1 and 2 ROA 117 3307 5
6. CHOR _ CAPXHOR _ CAPACITOR See revision change ble _ 4 00021 2 FEA 209 544 1 G 69 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation PartNo Note __ CAACHOR RiCamswnme _ Cub CAMCHOR SSS CAMCHOR CH Cus CAMCHOR __ _ _ CHOR CAPACITOR See revision change 009 CAPACITOR See revision change we _ cso CAPACHOR CAACHOR csa capacitor Oooo Normounted name CES CAPACITOR See revision change ase Normounted esso ces CAPCHOR Ricasswum _ 77 669 CWI CAPACHOR 98 56 CAPACITOR See revision change ase _ 4 00021 2 FEA 209 544 1 G 70 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pes Designation PartNo Note CAPACITOR C650 CAPACITOR RJC 463 3022 33 Verify handsfree earphone func tion CHI CAPACITOR Swreondwmeube 68669 Normounted _ Nummi NXmomd _ C664 CAPACITOR RJC 464 302
7. ohms and from H622 pad 3 to ground 0 ohms f any of the resistances are too high there is a foil damage and the phone is to be discarded 4 00021 2 FEA 209 544 1 G 32 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Fig 5 5 If the problem isn t solved send the phone to the next level Applies for KRC 114 279 Seiko display Make sure that there VLCD 2 8V voltage at H622 pad 5 fig 5 5 f there 15 no check the resistances from H622 pad 5 to V611 pin 2 ohms and from H622 pad 3 to ground 0 ohms f any of the resistances are too high there is a foil damage and the phone is to be discarded If the problem isn t solved proceed to section 5 4 KRC 114 279 GA 628 The front side of the circuit board is shown in fig 5 7 Measure the voltages at the V615 class A diode Compare the measurement to the values in fig 5 8 4 00021 2 FEA 209 544 1 G 33 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Fig 5 7 C824 VLCD 5 4V VRPAD 3 8V Load V615 PWT 0 3 ay Fig 5 8 of the values approximately 0 2V If any of the values differ measure the resistance of C633 class A gt 100 kohms fig 5 10 and C824 class A gt 25 kohms fig 5 8 f any of the resistances are too low replace the corresponding capacitor f the resistances and VRPAD are correct replace the diode If the voltages ex
8. 4 0002 1 2 FEA 209 544 1 G 15 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Start the phone using the On Off key and check the current consumption Ifthe phone doesn t consume any current at all when the On Off key is pressed it is most likely liquid damaged Open the phone and check this Also check that the keyboard and the keyboard pads are functional and clean e Ifthe phone consumes more than 200mA remove the display elastomer and try again f the consumption is reduced it was probably the elastomer or the display If the consumption is just as high as before proceed to section 3 4 3 Ifthe phone consumes 60mA average varies the battery indicator blinks once or twice and then the phone turns itself off then it s probably X820 the pads to the volume flex film fig 3 5 or the volume flex film J820 that is shorted out Replace the flex film and if that doesn t work proceed to section 3 2 f the same phenomena arises without the On Off key being pressed it means that V704 is broken fig 3 2 4706 xz 17711 CT20 Fig 3 5 e Ifthe phone consumes 1 200 starts asks for SIM searches for the net etc and works as long as you keep the On Off key pressed proceed to section 3 4 4 Ifthe phone doesn t start try to program it in the flash programmer f it doesn t start in the flash programmer proceed to section 3 4 1 If you are able to program the phone in the
9. If VRPAD is correct replace V706 class that doesn t help replace R652 class If the voltage at V706 pin 2 is missing check if there is voltage at C453 3 8V fig 9 3 f it s incorrect or missing proceed to chapter 3 Doesn t start fault f the voltage at C453 15 correct check the resistance from C453 to V706 pad 2 0 ohms the resistance is too high there is a foil damage and the phone should be discarded If the problem isn t solved send the phone to the next level 4 00021 2 FEA 209 544 1 G 62 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 10 RTC 10 1 Find fault Insert a SIM card and a fully charged battery into the phone and start it up Set the correct time Remove the battery and reinsert it after a minute e If the time says 00 00 proceed to section 10 2 Compare to the correct time e If the clock is speeding is halted proceed to section 10 3 The component side of the circuit board is shown in fig 10 1 Fig 10 3 Fig 10 1 10 2 The time says 00 00 after removed and reinserted battery Open the phone and check if the backup capacitor C720 class A fig 1 2 is cor rectly soldered 4 00021 2 FEA 209 544 1 G 63 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs C 2 Fig 10 2 If it is replace it Assemble the phone start it and set the correct time Wait a few minutes for the backup capacitor to c
10. cns CHSCiH Wamomei J ooo Reon cs capacitor eeoa cm capacitor wewa SSS cs Rea cms eeoa co capacitor cm caraco Ricasxmms CH Notmounied Numumd ______ _ c Wicasswmm OOOO Cm capacitor Cm cancro Cms capacitor icassu S Cm capacitor icasxosi cms cemcmon cmi capacitor Wicassus 4 00021 2 209 544 1 67 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation PatNe __ CAPACITOR RiC4 3mm _ Cm o ooo cs cwwcHoR Ricaesewi O ooo Cms CMMCHOR Ricaesvam Cm o o ooo Cm CwMCHOR Ricae3van OOOO ooo Cm micas CAMCHOR Cs Ricamswam _ CN CAMCHOR CN ooo CN cwcHoR OooooooSooo Cm CNs Cx ecse SSS Cw CwACHOR Cx Ricacssoosi emano oessa CH Cs C _ C3 CAMCHOR eas capacitor RiCamswam Ce CAMCHOR Rici
11. 4 00021 2 FEA 209 544 1 G 4 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs SIMCLK SIMDAT SIMRST SIMVCC SWDC VANA VBATT VDIG VDSP VLCD VRAD VRPAD VRIC VSIMPAD VVCO LO PWM Clock signal from the processor used for communications with the SIM Data signal from the processor used for communications with the SIM Reset signal from the processor used for communications with the SIM Feed voltage for the SIM Switched VBATT DC voltage for the analogue part of the logic N800 Battery voltage DC voltage for the processor and memory DC voltage for the DSP Digital Signal Processor DC voltage for the display that controls the contrast DC voltage for the radio part except the synthesizer DC voltage for the radio part in D600 also used for the top diode and the buzzer DC voltage for the real time clock VDIG voltage that has been switched up to 5V used for SIM DC voltage for the synthesizer Two line serial communications standard using one clock and one data line Local oscillator Pulse width modulation 4 0002 1 2 FEA 209 544 1 G 5 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs 1 3 Pin placements E e Anode Single diode PIN diode Electrolytic capacitor 2 123 5 4 3 Double diode or single trans Five pin circuit usually volt Double transistor stor age regulator 65 2 3 4 2 1 18
12. Un oy po Fuga E 5031 R 32 5034 Towards VDIGICAOD Fig 8 7 e Ifthe resistance is correct measure the resistance from C600 fig 8 2 to marked side of the resistors of the row R630 R634 in this case R630 should be 0 ohms and from the other side of the resistor to the marked side of the keyboard pads 0 ohms f any of the resistances are too high it means that there s a foil damage in the circuit board and the board is to be discarded f all of the resistances are correct check the solderings at D600 pads 1 and 120 128 f all of the solderings are correct replace D600 class B If there are voltage on only some of the pads on a row for instance on pad 1 and 2 but not on pad 2 4 or Yes2 there s a foil damage and the board 18 to be discarded This can be verified through checking the resistance from marked side on a working pad to marked side of a non working pad 0 ohms The foil damage is often caused by liquid damage If a column or a part of it 1s faulty check the solderings of D600 pads 1 and 120 128 fall the solderings are correct replace D600 class B 4 00021 2 FEA 209 544 1 G 54 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs 9 Illumination and buzzer 9 1 Kind of fault Insert a dummy battery and a SIM card into the phone press the On Off key and wait for the phone to get serv instrument or net If the phone doesn t beep when starting up go to Menu S
13. nog R62 R ni is placed as in this picture at revisions up to Fig 7 4 Measure the resistance of R724 class A 47 ohms fig 7 5 V ang 7705 Rey RT4 t 4700 705 1 Towards R16 Towards Fig 7 5 Give the circuit board power and start it up Measure the input voltage at N705 pin 2 3 1V fig 7 4 If the voltage is too low or missing check the VDIG voltage 3 2V at N702 pin 5 or at C600 fig 7 6 4 0002 1 2 FEA 209 544 1 G 45 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs H702 Naas ML je m F627 is placed according to this picture at board revisions R3A and newer Fig 7 6 If VDIG is too low measure the resistance to ground Tf it s more than 500 ohms replace N702 class If it s less than 500 ohms send to next level f VDIG is correct measure the resistance of R716 class A 4 7 ohms fig 7 5 f the resistance 15 correct check the resistance from R716 to N702 pin 5 0 ohms and from R716 opposite side to N705 pin 2 0 ohms f any of the resistances are too high there is a foil damage and the phone should be discarded f the input voltage at N705 pin 2 is correct measure the output voltage VSIMPAD 5V at N705 pin 3 class A fig 7 4 If the voltage is incorrect replace N705 f there is correct voltage it could be foil damage between N705 pin 3 and R724 or between N7
14. 121 6069 1 RYN 121 606971 V708 All revisions V V 2 3 9 9 1 5 9 9 6 61 62 0 817 81 83 40 60 70 80 83 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Revision change table for 2 ROA 117 3307 4 2 ROA 117 3307 4 Pos Revisions Part number C112 RJC 464 3024 1 C407 RJC 463 3021 56 C408 RJC 463 3021 27 C409 RJC 463 3021 39 C422 RJC 463 3020 82 C457 RJE 599 1107 47 C460 RJC 464 3023 68 C461 RJC 464 3023 56 _ Not mounted 4 0002 1 2 FEA 209 544 1 G 2 ROA 11 73307 6 2 ROA 117 3307 6 C112 RJC 464 3024 1 C407 RJC 463 3021 56 C408 RJC 463 3021 27 C409 RJC 463 3021 39 C422 RJC 463 3020 82 C460 RJC 464 3023 68 C461 RJC 464 3023 56 MEE _______ C615 Not mounted 84 112 ERICSSON 2 GH 666 GA626 Standard Electrical Repairs 2 117 3307 4 2 ROA 117 3307 6 Revisions Part number Revisions Part number cen C665 revisions C665 All revisions 464 3035 68 revisions RJC 463 3022 18 revisions RJC 463 3022 12 When replacing D600 on revisions R2B and pos C690 amp C691 MUST be replaced with RJC 463 3022 12 C69 revisions RJC 463 3022 18 C69 revisions RJC 463 3022 12 When replacing D600 on revisions R2B and pos C690 amp C691 MUST be replaced with RJC 463 3022 12 C711 C711 RJC 464 3024 12 C802 C802 RJC 464 3035 68 All revisions
15. revisions All revisions All revisions ON O C803 All revisions C803 RJC 464 3035 68 C804 revisions C804 RJC 464 3035 68 C805 All revisions C805 RJC 464 3035 68 C806 All revisions C806 RJC 464 3035 68 C807 C807 RJC 464 3035 68 C902 C902 RJC 464 3035 68 C903 C903 RJC 464 3035 68 C904 C904 RJC 464 3035 68 C905 C905 RJC 464 3035 68 C906 C906 RJC 464 3035 68 07 RJC 464 3025 1 C907 RJC 464 3035 68 All revisions ROP 101 678 2C R2A D600 All revisions ROP 101 678 2 R2A When replacing D600 on revisions R2B R3A and R4A pos C690 amp C691 MUST be replaced with RJC 463 3022 12 D900 RYS 105 627 D900 RYS 105 627 Q Ne 4 00021 2 FEA 209 544 1 G 85 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 2 117 3307 4 2 ROA 117 3307 6 Dl de Part number Part number REY 203 08 1 F601 REY 203 08 1 REY 203 08 1 F603 REY 203 08 1 REY 203 08 1 2604 Allrevisions REY 203 08 1 2605 All revisions REY 203 08 1 Not mounted L602 REG 706 18 1 L602 revisions L603 REG 706 18 1 L603 All revisions Not mounted 1 604 Allrevisions REG 706 18 1 L604 Not mounted L503 REG 704 274 27 L503 REG 704 274 27 L605 REG 706 18 1 L605 Not mounted L606 REG 706 18 1 L606 revisions Not mounted L608 REG 706 18 1 L608 All revisions Not mounted revisions L854 All revisions Not mounted revisions L910 revisions Not mounted R
16. 1 626 All revisions REG 706 18 1 L626 Not mounted 4 00021 2 FEA 209 544 1 G 86 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 2 ROA 117 3307 6 2 117 3307 4 Pos Revisions Part number Poe Revisions Part number 4 00021 2 FEA 209 544 1 G 87 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs 11 4 Component list GA628 2 ROA 117 3308 1 2 ROA 117 3308 2 2 ROA 117 3308 3 2 117 3308 4 2 ROA 117 3308 5 2 ROA 117 3308 7 Ci eeoa cms capacitor Wicassums _ ChRCHo Namome cm Rcasxmm _ cm cns capacitor icassus Oooo 02 Notmounted C caco Cm cm Reo OOOO Cm C213 C124 CAPACITOR _ caraco eeoa cm caraco weon cms capacitor OoOo capacitor Ricsxmms cm cwmcmon capacitor eea Cm icasxmg Cm cwmwcHoR Reo capacitor Wicassus _ Cm Cm capacitor Wicaesmg SSS cm _ 4 00021 2 FEA 209 544 1 G 88 112 ERICSSON 2 GH 66 GA626 Standard El
17. REY 203 08 1 REY 203 08 1 REG 704 274 27 Not mounted REG 706 18 1 Not mounted REG 706 18 1 Not mounted REG 706 18 1 Not mounted REG 706 18 1 Not mounted REG 706 18 1 Not mounted REG 706 18 1 Not mounted REG 706 18 1 Not mounted REG 706 18 1 Not mounted REG 706 18 1 106 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 117 3308 3 2 117 3308 4 Pos Revisions Produtnumber Produet number 7 4 622 001 0 R666 Up to REP 622 001 0 4 7 R R 0 L d 52 61 62 62 66 67 70 70 70 93 93 4 00021 2 FEA 209 544 1 G 107 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 117 3308 3 2 117 3308 4 Pos Revisions Product number R834 REP 622 455 1 R834 and higher V404 RSA R5B RKZ 323 650 1 404 revisions Not mounted V404 Other than Not mounted R5A R5B Ld V405 R5A R5B RKZ 323 650 1 V405 All revisions Not mounted V405 Other than Not mounted RSA R5B V609 RKZ 323 673 1 V609 RKZ 323 673 1 V708 RYN 121 6069 1 V708 Up to R3B RYN 121 6069 1 Ld 4 00021 2 FEA 209 544 1 G 108 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Revision change table for 2 ROA 117 3308 5 2 ROA 117 3308 7 2 117 3308 5 Product number RJC 464 3024 1 RJC 463 3021 47 RJC 463 3021 47 C214 RJC 463 3021 47 RJC 463
18. kooo koor rerea ko RESISTOR rera 4 00021 2 FEA 209 544 1 G 77 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation PartNo Note RESISTOR REPOS RESSTOR freos Numomei koo ressor Roos RESSTOR RESSTOR Normounted Normo _______ _ Ux TRANSFORMER TRANSSTOR _ Vx TRANSISTOR _ Vs TRANSISTOR ooo TRANSISTOR TRANSSTOR TRANSISTOR ooo TRANSSTOR TRANSISTOR _ vay pope ezzen va pope mKzsseun _ DUOLVAN DIODE See revision changea TRANSISTOR SSCS Rynie TRANSISTOR Vus TRANSISTOR J _ ves pope fezem Ve TRANSSTOR Named J ooo Namomei namon ooo 4 00021 2 FEA 209 544 1 G 78 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation TRANSSTOR _ 709 TRANSISTOR Seerevisionchangewble X401 CONTACT HOUS SXA 120 981 ING zx saws zm swvmmk ae r ooo zw Rum
19. the tables specifies which one to use for different boards or board revision 4 00021 2 FEA 209 544 1 G 65 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 11 2 Mounting drawing tables GH688 Board part 2 ROA 117 3307 1 RIA R2A nr RIC R3B 2 ROA 117 3307 3 R3A R3C pmoiuswn _ RevA RvB GA628 Board part 2 ROA 117 3308 1 RIA R2A R3A nr RID R2B R3B 2 ROA 117 3308 2 R2B R3B 2 ROA 117 3308 3 R3A R3B 2 ROA 117 3308 4 RSC R3B 2 ROA 117 3308 5 R5A R5B Mounting 1078 2 ROA 117 3307 1 Rev D drawing ReE _ 4 00021 2 FEA 209 544 1 G 66 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 11 3 Component list GH688 2 117 3307 1 2 ROA 117 3307 3 2 117 3307 4 2 117 3307 5 2 117 3307 6 B600 QUARTZ CRYS CRYS RTM 501 661 01 Verify Real Time Clock function Real Time Clock function TAL Wicassums Ci Ricassus Cm capacitor Ricaexum cms capacitor icassus Oooo 108 Not mounted Not mounted C110 cm Wcassuums Cnr CAPACITOR See revision changeable _ cns capacitor icassums OoOo cm wea
20. 3021 56 C407 RJC 463 3021 56 RJC 463 3021 27 RJC 463 3021 27 RJC 463 3021 39 C409 RJC 463 3021 39 MM NEN ie aD C461 C461 464 3023 56 C604 C604 464 3035 68 C605 C605 464 3035 68 C608 C608 464 3035 68 C609 C609 RIC 464 3035 68 All revisions revisions revisions revisions 2 ROA 117 3308 7 Revisions Product number C112 RJC 464 3024 1 C213 RJC 463 3021 47 C615 revisions Not mounted C616 All revisions C616 RJC 496 2047 1 C623 revisions C623 RJC 464 3025 1 C625 revisions C625 Not mounted C629 C629 RJC 463 3022 22 C652 C652 RJC 463 3022 33 4 00021 2 FEA 209 544 1 G 109 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 117 3308 5 2 117 3308 7 o mu Fu Revisions Product number RIC 464 30057 C903 RJC 464 3025 1 C903 RJC 464 3035 68 C904 C904 RJC 464 3035 68 C907 C907 RJC 464 3035 68 600 D600 ROP 101 677 2C RID D gt O 2603 revisions 2603 203 08 1 0900 F603 F604 F605 R243 All revisions R243 REP 622 453 18 LO 4 00021 2 FEA 209 544 1 G 110 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 117 3308 5 2 117 3308 7 Pos Revisions Produet number _ Product number R45 REZ 401 005447 dM Up to RSA R701 Not mounted D I 4 R701 R5B and higher 622 001 0 ME
21. 9 20 11 1 8 10 Sixteen pin circuit Twenty pin circuit 4 00021 2 FEA 209 544 1 G 6 112 ERICSSON 2 0 088 04628 Standard Electrical Repairs 4 00021 2 FEA 209 544 1 G 7 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 2 No serv or can t place a call 2 1 Find out if the problem is Tx or Rx related Connect the phone with signaling program to a GSM instrument and try to get serv at 68 5dBm signal strength e Ifthe phone gets serv proceed to section 2 2 fit doesn t get serv it s probably a problem located in the LO part the losses in the signal path are too great Open the phone and check for liquid damage The component side of the board 15 shown in fig 2 1 2925 25 Fig 2 1 Check the antenna connector X401 class A fig 2 2 and make sure that it isn t damaged or dirty glue varnish oxide and that the solderings aren t faulty Va Ed ran eu C426 421 Fig 2 2 Look for faulty solderings at 65350 and C359 fig 2 3 4 00021 2 FEA 209 544 1 G 8 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs C544 C545 0542 C543 C541 1500 3l IL 1350 oD 357 TEXT 350 2359 2 Fig 2 3 Measure the resistance of C853 class B gt 100 kohms fig 2 4 840 E 553 Fig 2 4 Give the board power and start it up Measure VVCO 3 8V at V
22. R605 or it didn t help by replacing D600 send the phone to the next level If all the above measured resistances are correct but some of the voltages at R601 or R605 are low it s either caused by a slight short circuit due to dirt at the marked area in fig 4 5 broken F603 or broken F604 If the voltages at R601 and R605 are correct connect a handsfree to the system connector e Measure the voltages at both sides of R601 OV fig 4 4 and at D600 pin 70 0 fig 4 2 4 00021 2 FEA 209 544 1 G 26 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs f the voltages aren t correct check the soldering of D600 pin 70 fig 4 2 f the soldering is correct check the resistance of R601 1 kohms class A f the resistance is correct replace D600 class B fig 4 2 f the voltages are correct check the solderings of N800 D600 and D900 fig 4 3 and 4 2 If the fault remains send the phone to the next level 4 5 Handsfree microphone out of order The fault is caused by an interruption somewhere in the audio path from the hands free microphone connected at the system connector to the input at 800 The audio path is shown in fig 4 6 ATMS Feal Rea Calo 2802 C812 0 19 C835 2 805 AGND AGND 4 Fig 4 6 Open the phone and check for liquid damages especially around the system connec tor X602 pads 1 2 and 4 fig 4 5 Measure the resist
23. Revision change table for 2 ROA 117 3307 3 80 2 ROA 117 3307 4 2 ROA 11 73307 6 84 11 4 Component list GA628 88 11 4 1 Revision change tables GA628 sss 100 Revision change table for 2 ROA 117 3308 1 2 ROA 117 3308 2 100 Revision change table for 2 ROA 117 3308 3 2 ROA 117 3308 4 104 Revision change table for 2 ROA 117 3308 5 2 ROA 117 3308 7 109 4 00021 2 FEA 209 544 1 G 2 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs 1 Conditions 1 1 Component classes the components in the phone are divided into classes and after every component in the troubleshooting guide you have a class written The components are divided into four classes A B C and D The class of the component depends on how much of the phone s performance is affected when replacing it Class A and test call towards the real net not only towards a GSM test instrument and run it through the normal tests is enough to verify the functionality since the performance of the phone 1s only slightly affected Class C Since the tolerances of the component are so great it can substantially affect the performance of the phone you need to calibrate it at station level after replacing the component Class D Class D components need to be calibrated at board level using very advanced equipment and may therefore not be
24. Standard Electrical Repairs MEI F603 VARISTOR See revision change table Verify portable handsfree func tion moo uk noms O OOS HG namon H650 LIGHT EMIT RKZ 433 613 1 Verify red green top indicator TING DIODE H651 H654 LIGHT EMIT RKZ 433 641 4 Verify Illumination function TING DIODE H655 H660 LIGHT EMIT RKZ 433 634 4 Verify Illumination function TING DIODE J603 COMPONENT RNK 860 23 04 HOLDER Bo E mbucro Um mbucrog Um ooe o ooo Um CHOKE o ooo Um mbucr oo eoon o o LAW TRANSFORMER ry mum us Hum Romeo rw Hum Romeo ooo 135 INDUCTOR See revision changeable _ table 7187 J _ L6 Normouned 77186 Notmounted See revision changeable Us Normoumed See revision 910 Not mounted See revision change bie 4 00021 2 FEA 209 544 1 G 73 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation PartNo Note MKROCRCUT No o ooo o o o o ooo Nm nos RESISTOR mena _ wm Ree
25. as described in section 6 1 1 4 00021 2 FEA 209 544 1 G 42 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 7 SIM fault Insert card 71 Definition of SIM fault Insert a working SIM card and a fully charged battery into the phone If the display says Wrong card or Insert correct card when you start the phone it means that the phone is SIM locked and cannot be repaired at this level Ifthe display say Phone lock it means that the customer has locked the phone with a personal code The phone will be unlocked in the reset part of the level 3 test e Ifthe display says PIN or Enter PIN it means that the SIM card is locked with a personal code e Only if the display say Insert card there is a SIM fault 7 2 Measuring VSIMPAD Measure the voltage at the system connector between pad 8 and 10 4 9V fig 7 1 e If the voltage is too low missing proceed to section 7 3 e If the voltage is correct proceed to section 7 4 Pin 10 Pin 8 Fig 7 1 Fig 7 2 shows the component side of the board and fig 7 3 the front side 4 00021 2 FEA 209 544 1 G 43 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs waits E Fig 7 3 7 3 Voltage at VSIMPAD is missing Open the phone and check for liquid damages especially below the SIM card J603 fig 7 4 4 00021 2 FEA 209 544 1 G 44 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs
26. fig 9 1 is correctly soldered e If the solderings are correct give the board power and start it up Measure the voltage at H600 pad 1 3 3V fig 9 2 e If the voltage is missing at H600 pad 1 measure VRPAD 3 8V at V706 pad 2 class A fig 9 2 If the voltage at V706 pad 2 1 missing check if VRPAD 15 at C453 fig 9 3 4 00021 2 FEA 209 544 1 G 61 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs If VRPAD is incorrect or missing proceed to chapter 3 Doesn t start fault If the voltage at C453 15 correct check the resistance from C453 and V706 pad 2 0 ohms f the resistance is too high there 15 a foil damage and the phone should be discarded f VRPAD at V706 pad 2 1s correct measure the resistance from VBATT to V706 pad 3 4 7 ohms fig 9 2 f the resistance is too high replace R652 class A fig 9 2 f the resistance is still too high after replacing R652 there is proba bly a foil damage somewhere between VBATT and marked side of R652 and the phone should be discarded f the resistance from VBATT to V706 pad 3 is correct replace V706 class A Check the soldering at D600 pad 93 If the problem isn t solved send the phone to the next level 9 7 Both LEDs at the top indicator glows faintly and the buzzer sounds faintly Open the phone and check for liquid damage Give the board power and start it up Measure VRPAD 3 8V at v706 pin 2 class A fig 9 2
27. ground foil around the antenna connector isn t dirty Check the antenna connector X401 class A fig 2 2 and make sure that it isn t damaged or dirty glue varnish oxide and that the solderings aren t faulty Replace the back cover and try again fit doesn t work it most likely means that the problem is Tx related Check if C300 C403 L300 V300 V301 or V302 all class A fig 2 6 are burnt 4 00021 2 FEA 209 544 1 G 10 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 17300 17902 17201 wa 403 ET 1 Fig 2 6 Check soldering at G300 fig 2 5 Measure the resistance of C853 class B gt 100 fig 2 4 Measure the resistance of R403 class B 1 ohms fig 2 6 Measure the resistance of L300 class A 1 ohms fig 2 6 If the problem isn t solved send the phone to the next level 2 3 Read the Rx level and output power values from the instrument while the call is still connected Ifthe Rx level value is at 40 46 steps check that the output power is 31 35dBm f it is correct it means that the phone probably isn t faulty Lower the signal strength at the instrument to 102dBm and make sure that the Rx level value is 6 12 steps and that the Rx quality value is 0 2 steps Try running the phone through the test again f the phone passes the test but doesn t manage to connect a call at the net make sure t
28. tor X602 pads 1 2 and 4 fig 4 5 Measure the resistances of C850 2100 and C851 21 kohms both in fig 4 3 Make sure all the components shown in fig 4 7 803 804 and C813 are mounted at the circuit board fig 4 3 Check the solderings of N800 fig 4 3 Measure the resistances of R803 100 ohms R804 100 kohms and C813 2100 kohms all of class A and in fig 4 3 Measure the resistance from the marked side of C813 to system connector X602 pad 1 0 ohms fig 4 5 If the resistance is too high there s a foil damage and the phone is to be dis carded If the fault remains use the schematics 4 00021 2 FEA 209 544 1 G 28 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 4 7 Both the microphone and the speaker of the handsfree out of order but the ear phone and the microphone of the phone is working Open the phone and check for liquid damages especially within the marked area above the system connector pads in fig 4 5 Clean the marked area using alcohol and a brush Measure the resistance from X602 pad 3 to the unmarked side of R635 0 ohms fig 4 4 and 4 5 Measure the resistance from X602 pad 5 to the unmarked side of R636 0 ohms fig 4 4 and 4 5 e If any of the resistances are too high there s foil damage and the phone is to be discarded Measure the resistances of R601 and R605 both are 1 kohms of class A and in fig 4 4 If all the resistance
29. 05 pin 3 0 ohms fig 4 4 and 4 2 f the resistance is too high there s a foil damage and the phone 15 to be discarded f the resistance is correct proceed to section 4 3 f there is VSIMPAD voltage at the marked side of R635 or R636 measure the resistances of them both are 22 kohms and in fig 4 4 f any of the resistances are incorrect replace the corresponding resistor 4 00021 2 FEA 209 544 1 G 25 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs Measure the resistance from X602 pad 5 to ground 2100 kohms f it s too low make sure there s no dirt or oxide between the compo nents in the marked area fig 4 5 Clean thoroughly and measure again Wat Ad Fig 4 5 f the resistance still is too low remove R601 class fig 4 4 f the resistance increased replace D600 class B fig 4 2 and mount a new 601 f the resistance didn t increase when removing R601 or it didn t help by replacing D600 send the phone to the next level Measure the resistance from X602 pad 3 to ground 2100 kohms f it s too low make sure there s no dirt or oxide between the compo nents in the marked area fig 4 5 Clean thoroughly and measure again f the resistance still is too low remove R605 class A fig 4 4 and measure again f the resistance increased replace D600 class B fig 4 2 and mount a new 605 If the resistance didn t increase when removing
30. 05 pin 3 and V700 pin 1 V705 pin fig 7 5 7 4 If there 15 a foil damage the phone should be discarded 7 4 There is voltage at VSIMPAD Check the SIM card holder and make sure that the SIM card contacts aren t dirty bent or broken Open the phone and check for liquid damage especially below the SIM card holder J603 fig 7 4 4 00021 2 FEA 209 544 1 G 46 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs Make sure that the SIM card holder is properly soldered Make sure the SIM card holder pads aren t loose if they are then the phone should be discarded due to foil damage and that the board leads are intact Measure the resistance of R704 class 100 kohms fig 7 5 Check the solderings at D600 pins 64 72 73 74 and 75 fig 7 6 Measure the resistance of R600 class A 33 ohms R627 class A 0 ohms R628 class A 33 ohms fig 7 4 The resistor R627 is placed according to fig 7 7 at revision R3A and above Check the resistances from R600 to J603 pin 2 0 ohms and from R628 to J603 pin 7 0 ohms e of them are too high there is a foil damage and the phone should be dis carded Replace 700 class A and 609 class fig 7 5 If the problem isn t solved send the phone to the next level 4 00021 2 FEA 209 544 1 G 47 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 8 Keyboard 8 1 Kind of keyboard fault Insert a SIM card and a fully charged b
31. 1 2900 FUNCTIONAL See revision change table CIRCUIT E201 SHIELDING POT SXA 120 1194 4 F601 VARISTOR See revision change table Verify handsfree earphone func tion F603 VARISTOR See revision change table Verify portable handsfree func tion uk knon moa 650 LIGHT EMIT RKZ 433 613 1 Verify red green top indicator TING DIODE H651 H654 LIGHT EMIT RKZ 433 641 4 Verify Illumination function TING DIODE H655 H660 LIGHT EMIT RKZ 433 634 4 Verify Illumination function TING DIODE J603 COMPONENT RNK 860 23 04 HOLDER um ooe inpucror messe o ooo INDUCTOR 4 00021 2 FEA 209 544 1 G 93 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation Prouembe UN CHOKE _ Um CHOKE o ooo Um eoms ooo xe Hum momen Ds mpucrok J ooo ns mum eoon S o o TRANSFORMER ____ mum feoeo us Hum Romeo rw Hum Romeo 35 INDUCTOR See revision changeable INDUCTOR Somoe nomom _ INDUCTOR See revision changeable INDUCTOR T See revision changeaie INDUCTOR Secrevisonchangewble _ INDUCTOR See revision changeable _ MIROCRCUT Rri No
32. 2 Measure the resistance after removing a LED When the resistance increases it means that the faulty LED is removed Mount new LEDs where you have removed the old ones Dirt beneath the display LEDs Fig 9 5 e If the resistance of the LEDs 15 high make sure that there is VBATT voltage at the marked side of the LEDs fig 9 1 f VBATT is missing it most likely means that the phone is liquid damaged If VBATT is correct check that R612 0 ohms class A R610 27 ohms class A and R606 0 ohms class are properly mounted and that they have the correct resistance all in fig 9 6 Rell 4 H658 5 ofp iP 1l 859 Has H 55 3 1 Fig 9 6 4 00021 2 FEA 209 544 1 G 59 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Table 9 1 shows symptoms when the resistance of the resistors are incorrect Missing or H651 H655 broken H654 H660 R606 Faintly Not lit glowing R612 Not lit Faintly glowing 610 Table 9 1 f none of LEDs H651 H654 H655 H660 fig 9 1 and 9 6 are lit measure the voltage at the marked of R607 3 1V fig 9 3 Before you measure you have to press a key on the phone to make the processor set the LED3K signal high for about 10 seconds f the voltage is missing check the soldering at D600 pin 92 fig 9 3 f the soldering 15 correct replace D600 class B f the voltage is correc
33. 26 Standard Electrical Repairs 2 117 3308 1 2 117 3308 2 Po Product number Rey 203 08 1 NENNEN Not mounted F604 Not mounted REY 203 08 1 F604 REY 203 08 1 Not mounted F605 Not mounted Rey 203 08 1 F605 REY 203 08 1 L503 REG 704 274 22 L503 REG 704 274 22 L503 REG 704 274 27 L503 REG 704 274 27 L602 Not mounted L602 Not mounted L604 Not mounted L604 Not mounted L605 Not mounted 1 605 Not mounted L608 Not mounted L608 Not mounted L626 Not mounted L626 Not mounted R429 revisions Not mounted R451 Up to R2A REZ 401 055 1 All revisions Not mounted Revisions Product number REP 622 001 0 Not mounted 4 00021 2 FEA 209 544 1 G 102 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 117 3308 1 2 117 3308 2 Product number Product number REP 622 001 0 R703 REP 622 001 0 LLL 4 00021 2 FEA 209 544 1 G 103 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Revision change table for 2 ROA 117 3308 3 2 ROA 117 3308 4 2 ROA 117 3308 3 2 ROA 117 3308 4 Pos Revisions Product number LLL LL LL MERE 4 00021 2 FEA 209 544 1 G 104 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 117 3308 3 ces C662 RJC 496 2047 1 C665 RJC 464 3035 68 C711 RJC 464 3024 12 C
34. 451 pad 3 and VRAD 3 8V at C457 fig 2 5 If any of the voltages are incorrect proceed to chapter 3 Doesn t start fault 4 00021 2 FEA 209 544 1 G 9 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs V451 3 300 C457 VRAD 1 14 E mE Fig 2 5 Measure the DC voltage at pin 1 and 2 of G350 The voltage at pin 1 control volt age should always vary between 0 8V 2 8V usually starts at 1 7V The volt age at pin 2 feed voltage also varies but usually starts at 3 3V fig 2 3 Ifthe feed voltage is incorrect usually no voltage at all check the soldering at D600 pin 102 fig 2 1 the soldering isn t faulty send the phone to the next level Ifthe control voltage is incorrect usually or 3 6V check if C370 class B and R357 class B are mounted both of them in fig 2 3 f that is the case replace N350 class B fig 2 3 f that doesn t help replace G350 class B fig 2 3 Measure the resistance of C540 C541 C542 C543 C544 and C545 all of them class B 2200 kohms fig 2 3 Check the solderings at C826 fig 2 4 Z201 Z500 Z501 and Z502 fig 2 3 If the problem isn t solved send the phone to the next level 2 2 Connect a call at powerlevel 5 using an instrument with 68 5dBm signal strength fit works proceed to section 2 3 fit doesn t work open the phone and check for liquid damage Make sure the
35. 5 1 Verify handsfree earphone func tion CWs CAPACITOR _ CWe Notmouned Numam SSS Nummi OOOO capacitor Ricamsvums CWi CAmCHOR _ Normounied csn Namomei Notmouned YS 616 CAPACHOR ocs ____ _ Normounied Ci CAPACITOR Swrsoncwmeube CNACHOR Rca CH capacitor See revision changeable _ Verify Real Time Clock function See revision change tabe _ 4 00021 2 FEA 209 544 1 G 71 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation C802 C808 CAPACITOR Secrevisonchangewble C813 CAPACITOR RJE 599 2107 15 Verify handsfree earphone func tion CAPCHOR rasos CES _ _ capscror CHI Novmouned J OOOO cass CAPACHOR CH Normounied capacitor ___ _ C902 C907 CAPACITOR See revision change Numomei namon Deo MICROCIRCUIT See revision change ase _ 2900 FUNCTIONAL See revision change table CIRCUIT E201 SHIELDING POT SXA 120 1194 4 2 ______ 2601 VARISTOR See revision change table Verify handsfree earphone func tion 4 00021 2 FEA 209 544 1 G 72 112 ERICSSON 2 GH 66 GA626
36. 730 RJC 464 3047 1 C802 RJC 464 3035 68 C803 RJC 464 3035 68 C804 RJC 464 3035 68 C805 RJC 464 3035 68 C806 RJC 464 3035 68 C807 RJC 464 3035 68 Revisions C625 Up to R3B 4 00021 2 FEA 209 544 1 G 2 117 3308 4 Product number Not mounted RJC 463 3022 22 RJC 463 3022 22 Not mounted Not mounted RJC 464 3025 1 Not mounted RJC 464 3025 1 Not mounted RJC 464 3025 1 RJC 463 3022 33 Not mounted RJC 463 3022 33 RJC 496 2047 1 RJC 464 3035 68 Not mounted RJC 464 3025 1 Not mounted RJC 464 3025 1 RJC 464 3024 12 Not mounted RJC 464 3047 1 Not mounted RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 Not mounted RJC 464 3025 1 105 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 117 3308 3 Pos Revisions Product number C902 RJC 464 3035 68 _____ LL E E 203 08 1 2604 REY 203 08 1 F605 REY 203 08 1 L503 REG 704 274 27 Revisions C902 Up to R3B 4 00021 2 FEA 209 544 1 G 2 117 3308 4 Product number RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 RJC 464 3035 68 RJC 464 3025 1 ROP 101 677 2C RID RYS 105 627 C RIA REY 203 08 1 REY 203 08 1
37. CITOR cese Notmouned _ CAPACHOR See revision changeable _ 686 _ Numumd C664 CAPACITOR RJC 464 3025 1 Verify handsfree earphone func tion C665 CAPACITOR See revision change table El C666 CAPACITOR See revision change table S 4 00021 2 FEA 209 544 1 G 91 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs C667 Verify charging function 066 0672 Nomomei _ Nomomei Nomo 6169 _ CH CAPACHOR _ Normounted i CAmcHoR ces CAPACITOR Ricasssosses _ CAPACHOR _ CAPACITOR See revision changea CHXLCH CAPACITOR Sce revision change ase _ C813 CAPACITOR RJE 599 2107 15 Verify handsfree earphone func tion capacitor rasas CES Numen CAPCHOR 4 00021 2 FEA 209 544 1 G 92 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pes Designation Productnuber Notmouned J Oooo O3 CAPACHOR Normounted nomom CAPACITOR ooo C9020907 CAPACITOR See revision change tae nomom 7 260 MICROCICUIT See revision changet WicoCRCUIT 119 6047
38. ICSSON 2 GH 66 GA626 Standard Electrical Repairs Keyboard schematics GA 628 Yes VBATT n Let 30 row 1 2500 125 631 row 2 D600 124 ES 632 row 3 123 Column 1 Column 2 Column 3 n H 15 WDIG R633 row4 D600 122 nies ONSRQ D row 5 2600 120 D 600 1z8 1 47 2600 1 2600 1 25 Fig 8 4 If VDIG is correct check if there is correct voltage 3 2V at marked sides on the pads of the faulty keys GH 688 shown on fig 8 5 GA 628 on fig 8 6 4 00021 2 FEA 209 544 1 G 51 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs GH 688 ms Du i LAT I ia Fig 8 5 HH Crossed out pads are not in use 4 00021 2 FEA 209 544 1 G 52 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs GA 628 Nx 3 I mn A im T NL zd ri s 2 L i 9 2 I Fig 6 Crossed out pads are not in use If there 15 no voltage at a whole row according to fig 8 5 8 6 for instance 1 2 3 Yes2 measure the resistance of that row s resistor R630 R631 R632 R633 and 634 fig 8 7 In this case the R630 resistor the resistors are of class and should be 100kohms 4 00021 2 FEA 209 544 1 G 53 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Towards VDIG
39. REP 622 653 1 Verify handsfree earphone func tion R804 RESISTOR REP 622 456 1 Verify handsfree earphone func tion Nummi Normed rerez RESISTOR Rer 4 00021 2 FEA 209 544 1 G 97 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs RSS RESISTOR See revision change ase Numen NXmamd _ Notmounted NXmamd ______ _ wy Resistor RESSTOR _____ _ RW R910 Normounted name _ TRANSSTOR _ Vx TRANSISTOR TRANSISTOR vuv TRANSSTOR _ TRANSISTOR _ TRANSISTOR o ooo TRANSSTOR _ Vas TRANSISTOR _ vay pope ezzen _ Vw DIODE fezo _ VaW Vas PIDE TRANSISTOR enoe ooo TRANSISTOR Renie ooo TRANSISTOR Ryno Vus TRANSISTOR Rynie _ Ves DIODE o ooo TRANSISTOR 4 00021 2 209 544 1 98 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation Proutmber X401 CONTACT HOUS SXA 120 981 ING zw Rum ooo zw mur 4 00021 2 FEA 209 544 1 G 99 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 11 4 1 Revisio
40. ances of C850 2100 and C851 21 kohms both in fig 4 3 Make sure all the components shown in fig 4 6 R830 R825 R802 R805 C835 C810 and C812 are mounted at the circuit board fig 4 3 Check the solderings of N800 Give the board power and start it up by pressing the On Off key without the system cable connected Measure the voltage at the marked side of R825 3 1V fig 4 3 If the voltage isn t there or if it is incorrect check the voltage at the marked side of R830 4 0002 1 2 FEA 209 544 1 G 27 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs the voltage isn t correct proceed to chapter 3 Doesn t start fault f VANA is correct check the resistances of R830 470 ohms R825 3 3 kohms and C835 gt 1 kohms all of class and in fig 4 3 If the voltage at R825 is correct check the resistances of C810 gt 10 kohms C812 gt 100 kohms R802 3 9 kohms and R805 15 kohms all four of class A and in fig 4 3 If the fault remains send the phone to the next level 4 6 Handsfree speaker out of order The fault 15 caused by an interruption somewhere in the audio path from the output of 800 to the handsfree speaker connected at the system connector The audio path is shown in fig 4 7 2 803 Cals 800 22 AFMS 2 804 800 4 Fig 4 7 Open the phone and check for liquid damages especially around system connec
41. arging function Connect an ordinary battery to the phone The voltage of the battery must be so high that you can start the phone with it Otherwise the charging doesn t start immedi ately Cut the cable from a charger and make a charging test cable Connect the charging test cable to a power supply that shows the current consump tion Make sure that the DCIO pin is connected to the positive outlet of the power supply As an alternative you can connect an ordinary battery charger in serial with an ampere meter Set the power supply at 7 6V and a current limit of 700mA Connect the charging test cable to the system connector of the phone and check the current consumption There s nothing wrong with the charging function if the phone starts indicates in the display that it s charging and switches between 700mA 500 800mA depend ing on charger model if utilising the alternative solution and 5mA with a few seconds interval Every time you repair a charging fault you have to verify the charging function as described above 4 00021 2 FEA 209 544 1 G 38 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 6 2 Indicates charging without a charger Open the phone and check for liquid damages The component side of the circuit board is shown in fig 6 1 Fig 6 1 Give the board power and start it with the On Off key Check the voltages VDIG 3 2V VRAD 3 8V fig 6 2 and the resistance R703 class A o
42. attery Start the phone using the On Off key fit doesn t start at all proceed to chapter 3 Doesn t start fault Ifthe phone 688 consumes approximately 60mA average varies the bat tery indicator blinks once or twice and then turns itself off proceed to section 8 2 Press all the keys including the volume keys on the GH 688 to check which of the keys that are faulty The following is the easiest way to check the keyboard 1 Go to Menu Setting Key sound and choose Click 2 Press keys 1 9 0 The phone should click and the display should show the corresponding symbol for each key pressed Then press Yes Clr lt and gt When pressing Yes the phone should try to place a call and when pressing No it should disconnect it The Clr key should make the phone erase one or more symbols numbers in the display when pressed When pressing the keys lt and gt the phone should enter the menu for you to skim through 3 Press the volume keys on the side of the phone 688 The phone should click at every key pressed e If only the volume keys are faulty proceed to section 8 2 fone or more of the keyboard keys are faulty proceed to section 8 3 e Ifthe volume keys and or more of the keyboard keys are faulty proceed to section 8 2 and then to 8 3 8 2 Volume keys faulty Open the phone and check for liquid damage especially aroun
43. board in the fixture Start it up and keep it going by keeping DCIO high Measure the voltage at C692 3 1V fig 3 2 the figure shows GH 688 board but the capacitor is placed at the same location If there is voltage check the soldering at D600 pad 119 e If there is no voltage measure the resistance of C692 class A 5200 kohms If the resistance is correct measure VDIG f the voltage at VDIG is incorrect see 3 4 1 3 4 2 or 3 4 3 If VDIG is correct check the resistance from 702 pin5 fig 3 2 to C692 0 ohms 4 00021 2 FEA 209 544 1 G 20 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs f the resistance 18 too high measure the resistance of R721 class A 0 ohms If R721 is correct there is a foil damage and the phone should be discarded If the fault remains send the phone to the next level 4 00021 2 FEA 209 544 1 G 21 112 ERICSSON 2 4 Audio GH 66 GA626 Standard Electrical Repairs 4 1 Type of fault Make a call from the phone that 18 to be tested later called the phone to a phone that is working correctly later called the reference phone Check the function of the microphone and the earphone Connect a handsfree unit to the system connector of the phone Check the function of the phone s external connections by listening to the external speaker earphone when talking in the reference phone and by listening to the ear phone of the reference phone when talk
44. cept VRPAD at the diode are still incorrect after replacing it check the soldering at D600 pad 96 If it s correct replace C636 class A fig 5 8 If VRPAD is incorrect proceed to chapter 3 Doesn t start fault Make sure that the voltage VLCD 5 4V 15 at H624 pad 1 f it s not check the resistances from H624 pad 1 to V615 pin 2 0 ohms and from H624 pad 2 to ground 0 ohms f any of the resistances are too high there is a foil damage and the phone should be discarded 4 00021 2 FEA 209 544 1 G 34 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs F79 833 J 7 R619 ERES ds R678 i D p Fig 5 10 If the problem isn t solved send the phone to the next level 5 4 the segments in the display are lit Open the phone and check for liquid damage Try with another display elastomer f it doesn t help give the board power and start it up without display GH 688 Applies for KRC 114 245 and KRC 114 277 Philips displa Measure the voltages at the display pads H622 fig 5 5 Notinuse use cp ee NE A Table 5 1 4 00021 2 FEA 209 544 1 G 35 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs If VLCD voltage is missing proceed to section 5 3 If the 12 or the I C CLOCK voltages missing check VDIG 3 2V If VDIG is incorrect procee
45. ck the solderings of N800 fig 4 3 Fig 4 2 shows the component side of the circuit board 4 00021 2 FEA 209 544 1 G 23 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Cala Apples for F244 revisions and C819 earlier E EI 1 c 0 20 NES c 80 14800 C812 R830 R825 R55 2519 Apples for E 3 revisions and R317 vana C813 C850 RIS FUE 851 i HU 504 8 010 8 6812 C835 R830 Reis Fig 4 3 If the fault remains send the phone to the next level 4 3 Microphone out of order Open the phone and check for liquid damages especially around X830 fig 4 1 and below J603 marked area A in fig 4 2 Clean the system and microphone connector pads if needed Most of the microphone faults are mechanical Therefore you should start with replacing the front with microphone and elastomer to one you know works and try again If the fault remains measure the resistances of C850 2100 C851 gt l kohms R817 1 kohms and R819 1kohms all of class A and in fig 4 3 Note The resistors are mounted at boards from revision R3A and above Check the solderings of N800 fig 4 3 Replace C818 and C819 fig 4 3 If the fault still remains send the phone to the next level 4 00021 2 FEA 209 544 1 G ERICSSON 2 GH 66 GA626 Stan
46. d X820 fig 8 1 4 00021 2 FEA 209 544 1 G 48 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 640 Y GND Y Fig 8 1 Clean the pads thoroughly Measure the resistance from V to GND Ifthe resistance is more than 25 kohms replace the flex film for the volume keys Assemble the phone and check if the volume keys work according to 8 1 f not replace D600 class B fig 8 2 If the resistance is less than 25 kohms replace D600 class fig 8 2 CA YDIG 4 00021 2 FEA 209 544 1 G 49 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 8 3 One or more keys faulty Open the phone and check for liquid damage especially around the keys that are faulty Clean the keyboard pads thoroughly and assemble the phone with a new keyboard Check functionality according to 8 1 If it didn t help open the phone give it power and start it up Measure VDIG 3 2V on C600 fig 8 2 If VDIG is incorrect proceed to chapter 3 Doesn t start fault Keyboard schematics 686 Column 4 row 1 D600 125 R 3l row 2 D600 124 R32 row 3 D600 123 VDIG 633 row 4 D600 123 Loo m Column Column 2 Column 3 Volume Buttons pi n rows 2800 120 D8600 1268 D8600 127 1 1 28 Fig 8 3 4 00021 2 FEA 209 544 1 G 50 112 ER
47. d check for liquid damage The front side of the board 1 shown in fig 9 1 Make sure the double LED H650 class A fig 9 1 is correctly soldered e Ifthe solderings are correct give the board power and start it up Measure the voltage at H600 pad 1 3 3V fig 9 2 e If the voltage is missing at H600 pad 1 measure VRPAD 3 8V at V706 pad 2 class A fig 9 2 If the voltage at V706 pad 2 15 missing check if VRPAD is at C453 fig 9 3 f VRPAD is incorrect or missing proceed to chapter Doesn t start fault If the voltage at C453 15 correct check the resistance from C453 and V706 pad 2 0 ohms f the resistance is too high there 15 a foil damage and the phone should be discarded f the VRPAD voltage at V706 pad 2 is correct measure the resistance from VBATT to 706 pad 3 4 7 ohms fig 9 2 f the resistance is too high replace R652 class A fig 9 2 f the resistance still is too high after replacing R652 there s probably a foil damage somewhere between VBATT and marked side of R652 and the phone should be discarded f the resistance from VBATT to V706 pad 3 is correct replace V706 class A Check the soldering at D600 pad 94 If the problem isn t solved send the phone to the next level 9 6 Red LED at the topindicator doesn t work Open the phone and check for liquid damage The front side of the board is shown in fig 9 1 Make sure the double LED H650 class A
48. d to chapter Doesn t start fault f VDIG 15 correct measure the resistances of R619 class A 2 2 kohms R620 class A 2 2 kohms R668 class A 10 kohms and R669 class A 10 kohms Make sure the solderings at D600 pads 3 and 4 are correct f the resistances and the solderings are correct replace D600 class B Applies for KRC 114 279 Seiko displav Measure the voltages at the display pads H622 fig 5 5 Notinwe 3 GND 0V 3 2 32V Table 5 2 If VLCD is incorrect proceed to section 5 3 If the 12 or the I C CLOCK voltages missing check VDIG 3 2V If VDIG is incorrect proceed to chapter Doesn t start fault f VDIG is correct measure the resistances of R619 class A 2 2 kohms R620 class A 2 2 kohms R668 class A 10 kohms and R669 class A 10 kohms Make sure the solderings at D600 pads 3 and 4 are correct the resistances and the solderings are correct replace D600 class 4 00021 2 FEA 209 544 1 G 36 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs GA 628 Measure the voltages at the display pads H624 fig 5 10 3 Eco 32 Table 5 3 If VLCD is incorrect proceed to section 5 3 If the 12 or the I C CLOCK voltages are missing check VDIG 3 2V If VDIG is incorrect proceed to chapter Doesn t start fault f VDIG 15 correct measur
49. dard Electrical Repairs 4 4 Both the earphone and microphone out of order Open the phone and check for liquid damages Make sure there is no dirt or oxide between the components above the system con nector pads fig 4 4 or marked area in fig 4 5 Check very thoroughly to R605 m E635 R ren B F603 H m Ju Fig 4 4 Clean the marked surface using alcohol and a brush Note The dirt can be very hard to remove but it s important to wash it away Assemble the phone and try again as in 4 1 If the fault remains replace F603 and F604 It s important to clean where the com ponents are supposed to be before mounting new ones Assemble the phone and try again as in 4 1 If it still doesn t work open the phone give the board power and start it up by press ing the On Off key without the system cable connected Measure the voltage at both sides of R601 and at D600 pin 70 5 V fig 4 4 and 4 2 you follow the PHFI signal Measure the voltage at both sides of R605 and at D600 pin 67 5 fig 4 4 and 4 2 you follow the EXTAUDI signal e If the voltage is low only at one side of R601 or R605 replace the corresponding resistor fig 4 4 both of class A e If the voltage is low at both sides of R601 or R605 check the VSIMPAD voltage at the marked sides of R635 and 636 5V fig 4 4 f there is no voltage check the resistance from the marked side of R635 or R636 to N7
50. e display is totally empty or the contrast is low Give the board power and start it up without a display mounted GH 688 The front side of the board 18 shown in fig 5 1 Measure the voltages at V608 class A and V611 class A The 688 uses dis plays of two different brands Philips and Seiko Fig 5 2 and 5 3 shows typical volt age values for both brands Fig 5 1 Applies for KRC 114 245 and KRC 114 277 Philips display 1 12 WLCD 37V dg C834 4 Vall OFW 3 8M Fig 5 2 4 00021 2 FEA 209 544 1 G 31 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs Applies for KRC 114 279 Seiko display Fig 5 3 of the values approximately 0 2V If one or more of the voltages are incorrect measure the resistance if C633 class 2100 fig 5 5 and C824 class A gt 25 kohms fig 5 2 and 5 3 e If any of the resistances are too low replace the corresponding capacitor e f both the resistances are correct replace both diodes f any of the voltages at the diodes still are wrong after replacing them check the solderings at D600 pads 95 and 96 f they are correct replace C634 and C632 class A fig 5 2 and 5 3 Applies for KRC 114 245 and KRC 114 277 Philips display Make sure that there VLCD 3 7V voltage at H622 pad 5 fig 5 5 f there 15 no check the resistances from H622 pad 5 to V611 pin 2
51. e system connector pads aren t burnt Insert the board in the fixture Start it up and keep it going by keeping DCIO high Check VDIG and VDSP 3 2V fig 3 2 e If any of the voltages are too low measure the resistance from it to ground VDIG gt 500 Ohms VDSP gt 25 f the resistance is correct replace the corresponding circuit VDIG N702 class A VDSP N701 class A f the resistance is too low send the phone to the next level If any of the voltages are too high replace the corresponding circuit Check VRAD VVCO and VRPAD 3 8V fig 3 6 e the voltages are incorrect measure the resistance from N450 pads 8 11 12 13 and 14 to ground 0 ohms f any of the resistances are too high there is a foil damage and the phone should be discarded Tf all the resistances are correct replace the circuit and eventually the tran sistors V450 V451 V452 all class If one or two of the voltages are incorrect measure the resistance from the incor rect voltage s to ground gt 50 kohms f the resistance is correct replace the corresponding transistor If that doesn t help replace N450 class A 4 00021 2 FEA 209 544 1 G 18 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs f the resistances from any of the voltages to ground are too low send the phone to the next level Make sure that there are no faulty solderings D600 D610 and D620 e If the sold
52. e the resistances of R619 class A 2 2 kohms R620 class A 2 2 kohms R678 class A 10 kohms and R679 class A 10 kohms Make sure the solderings at D600 pads 3 and 4 are correct f the resistances and the solderings are correct replace D600 class B If the problem isn t solved send the phone to the next level Note Fig 5 4 5 6 and 5 9 are not in this document 4 00021 2 FEA 209 544 1 G 37 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 6 Charging 6 1 Kind of charging fault Do a visual check of the battery screws and system connector Replace if needed Start the phone with a fully charged battery using the On Off key e fit doesn t start proceed to chapter 3 Doesn start fault e Ifthe phone starts and indicates that it is charging without a charger connected proceed to section 6 2 e Ifthe phone doesn t indicate that it is charging turn it off and connect a charger to the system connector f it starts indicates that it is charging and lights the red top indicator then the phone is probably working correctly To verify this perform the test described in 6 1 1 If the phone doesn t start proceed to section 6 3 f the phone starts and indicates that it is charging but doesn t charge pro ceed to section 6 4 f it starts and indicates that it is charging but the red top indicator isn t lit proceed to chapter 9 Hlumination fault 6 1 1 Verifying the ch
53. ectrical Repairs Pos Designation Produtmber CHS CAPACITOR _ _ CwACHOR Cw capacitor CX CWMACHOR CH cwACHOR emano Ricamswam SSS CN CAMCHOR Cm cwACHOR CN CACHOR WiCamswase _ Cs CAMCHOR RiCamsyam _ CHs emano RiCasswum Ce capacitor ecse Cw cwcHOR Riciexeri CHs capacitor Cw CAMCHOR Cw _ emano RiCamswam SSS emano RiCaesyam CH amp OWE CAPACHOR capacitor _ capacitor CAMCHOR Ricamswam _ 1107 0409 CAPACITOR See revision change _ GG CAPACITOR See revision Gm emano oessa Om Ricasswum Gus CAMCHOR oessa ooo Cms CMMCHOR Ricassyam _ emano Rice p CESOHO CAPACHOR See revision changeable Nummi OH ocaso 4 00021 2 209 544 1 89 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs OH Riesen _ CAMCHOR CAPACITOR See revision change ase as CACHOR oea CH CAPACITOR See revision cha
54. eplaced with RJC replaced with RJC 463 3022 12 463 3022 12 D900 RYS 105 625 2 D900 RYS 105 625 2C RAA 2601 R2A and higher REY 203 08 1 F603 Up to R2B 2603 R3A and higher REY 203 08 1 F604 Up to R2B Not mounted 2604 R3A and higher REY 203 08 1 QN LL L503 1 503 Allrevisions REG 704 274 27 Not mounted L602 Not mounted L602 All revisions Not mounted Not mounted L604 All revisions 1604 Not mounted Not mounted Not mounted L626 L626 revisions L854 L854 All revisions Not mounted RB R401 R3B 2401 and higher 622 453 22 9 All revisions Not mounted R451 R451 REZ 401 0054 47 10900 FOOL F601 F603 F604 F604 8605 8605 1503 1508 1602 1603 222 1605 1606 LE 1626 1854 E 8400 8400 RAOL 8401 5402 5402 D I I Ne 4 00021 2 FEA 209 544 1 G 82 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 ROA 1173307 1 Part number Allrevisions REP 622 001 0 Not mounted 2 ROA 1173307 5 V405 Not mounted 4 00021 2 FEA 209 544 1 G 2 1173307 3 Revisions Part number R520 Up to R3A REP 622 001 0 R521 Up to R521 R3B and higher NENNEN R R R627 R708 REP 622 456 1 R7 REP 622 454 47 REP 622 654 47 R834 REP 622 455 1 R A R All revisions R A 404 All revisions V V Ali revisions
55. erings look good replace D610 class f that doesn t help first replace D600 class B and then D620 class A Try to program the phone in the flash programmer for every circuit you replace 3 4 3 Consumes more than 200mA Open the phone and check for liquid damage Make sure that the system connector pads aren t burnt Insert the board in the fixture Start it up and keep it going by keeping DCIO high Check VDIG and VDSP 3 2V fig 3 2 e If any of the voltages are too low measure the resistance from it to ground VDIG gt 500 ohms VDSP gt 25 kohms f the resistance is correct replace the corresponding circuit VDIG N702 class A VDSP N701 class A f the resistance is too low send the phone to the next level If any of the voltages are too high replace the corresponding circuit Check VRAD VVCO and VRPAD 3 8V fig 3 6 fall three voltages are incorrect measure the resistance from N450 pads 8 11 12 13 and 14 to ground 0 ohms f the resistance is too high there is a foil damage and the phone should be discarded f the resistance is correct replace the circuit and eventually transistors V450 V451 V452 all class A e If one two of the voltages are incorrect measure the resistance to ground gt 50 kohms f the resistance is correct replace the corresponding transistor f that doesn t help replace N450 class A f the resistance from any
56. etting Ring level Menu Ring level at the GA 628 and try to raise the ring level to full If there is no sound or if it is only faint proceed to section 9 2 If the illumination of the display doesn t light up at start proceed to section 9 3 If the illumination of the keyboard doesn t light up at start proceed to section 9 4 If the top indicator of the phone doesn t start to blink green when getting serv proceed to section 9 5 When the phone has gotten serv and the top indicator starts to blink green lower the battery voltage to 4 2V The top indicator should start to blink red instead of green the battery indicator should show an empty battery and the phone should warn with a beep If the battery indicator doesn t show an empty battery the top indicator doesn t blink red and the phone doesn t beep it means that the phone needs a battery cal ibration If the battery indicator shows an empty battery the phone beep but the top indi cator doesn t blink proceed to section 9 6 If the top indicator glows with both colors and the buzzer sounds faintly proceed to section 9 7 9 2 Buzzer sounds faintly or not at all Open the phone and check for liquid damage Both sides of the circuit board are shown in fig 9 1 4 00021 2 FEA 209 544 1 G 55 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs Fig 9 6 Fig 9 1b Make sure the buzzer H600 class A fig 9 1a 15 properly soldered f solderings are correc
57. exum Cw Ricexe rn C capacitor SS CH capscror _ Cw _ CAMCHOR Ricassvam _ Cm emano capacitor CAMCHOR Ricasswum 4 00021 2 FEA 209 544 1 G 68 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation PartNo Note CAPACITOR 6200 CAPACITOR See revision hangete Om cAmcHoR _ CHI CAPACITOR See revision change te _ ecas _ _ earacrtor ecas _ 6480 CAPACITOR Seerevsionchangewble Normounied _ _ 7 _ Om _ Wsengm _ resonera _ cass Numumd S Ricans _ CHT CAPACITOR _ CH CANTOR _ CAPACITOR Seerevsionchangewble _ CH _ CH _ _ CWs CHOR _ CWs Wceemen _ CX cmcHoR rican _ CAmcHOR rican _ _ _
58. f it s correct 60 kohms replace V402 e If the resistance is still too low replace both diodes Measure again after replacing the component s e If the resistance is still too low measure the resistance of R421 and R422 both of class B 100 kohms fig 2 2 Both the resistors are 100 kohms but when you measure them the instrument will show 60 kohms Check the solderings at C826 fig 2 4 Z201 Z500 Z501 and Z502 fig 2 3 Measure the resistance of C540 C541 C542 C543 C544 and C545 all of them class B gt 200 kohms fig 2 3 If the problem isn t solved send the phone to the next level 4 00021 2 FEA 209 544 1 G 12 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 3 Doesn t start 3 1 Find out if the phone will start by using the On Off button Insert a fully charged battery and press the On Off button Ifthe phone doesn t start proceed to section 3 2 e Ifthe phone starts check the charging function by connecting a charger at the system connector If the phone doesn t charge proceed to chapter 6 Charging fault If the phone starts lights the background illumination asks for SIM PIN seeks the net and charges it s probably not faulty or the problem is inter mittent Open the phone and make a visual examination of the circuit board The component side of the board 15 shown in fig 3 1 Fig 3 1 Check for liquid damages anywhere at the board Also check for b
59. flash programmer but it doesn t start afterwards or if it is troublesome when trying to program it proceed to section 3 4 2 f the phone starts after programming it in the flash programmer then the problem is probably solved but to eliminate intermittent errors check the cir cuit board for liquid damage or faulty solderings on D600 D610 and D620 fig 3 2 4 00021 2 FEA 209 544 1 G 16 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 3 4 Measuring at a powered circuit board 3 4 1 Doesn t start in the flash programmer Open the phone and check for liquid damage Make sure the system connector pads aren t burnt Place the board in the fixture Start it up and keep it running by keeping DCIO high Check VDIG and VDSP voltages 3 2 V fig 3 2 e of the voltages too low measure the resistance to ground VDIG gt 500 ohms VDSP 25 kohms f the resistances are correct replace the corresponding circuit VDIG N702 VDSP N701 both of class A f the resistance is too low send the phone to next level If any of the voltages are too high replace the corresponding circuit Check the power reset voltage at C710 fig 3 2 23V e fit s lower replace 450 class A fig 3 6 and try again f it didn t work replace C710 class VRPAD 1531 Fig 3 6 Check VRAD VVCO and VRPAD 3 8V fig 3 6 e fall three voltages are wrong measu
60. ge awe _ Notmounied 4 00021 2 FEA 209 544 1 G 95 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pes Designation Product nuber R600 RESISTOR REP622452 3 Verify SIM function SIM function R601 RESISTOR REP 622 454 1 Verify portable handsfree func tion Verify vehicle handsfree function vehicle Verify vehicle handsfree function function RESISTOR Novmouned nomme ______ RESISTOR RESISTOR Notmounted _____ _ Rss RESISTOR RESSTOR Ren RESSTOR Semwsocumeube _ RESSTOR _ R636 RESISTOR REP 622 455 22 Verify portable handsfree func tion R69 Numomd Nomon _____ _ Re _ Rs _ mer RESISTOR 4 00021 2 FEA 209 544 1 G 96 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation Prodetmber _ RESISTOR RESISTOR See revision change ase Ros RESISTOR See revision change awe RESISTOR See revision change awe _ Roo RESSTOR Ror RESISTOR RESISTOR REPO ROW RESISTOR oooO R709 RESISTOR Soe revision change tse _ Resistor rerom ks rezas _ R803 RESISTOR
61. harge Remove the battery and reinsert it after a minute Check if the error is fixed the backup capacitor needs a few hours of charging to reach full capacity Compare to the correct time If the clock is speed ing or is halted proceed to section 1 3 10 3 The clock is speeding or doesn t change Open the phone and check if the crystal B600 is correctly soldered fitis then replace B600 C690 and C691 all of them class A NOTE The val ues of C690 and C69 varies depending on the version of the D600 see the spare part list components are shown on fig 1 3 Assemble the phone and compare to the cor rect time Aime BADD 690 600 691 Em Fig 10 3 4 00021 2 FEA 209 544 1 G 64 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs 11 Component lists 11 1 Explanation 11 1 1 Mounting drawing table The Mounting drawings show the components placements Pos at the printed board The Mounting drawings are not included in this document 11 1 2 Component list Position The components position number at the board Designation Description of the component Part No The components part number or reference to Revision Change table Note Functions that are affected 1f the component 1 replaced The specified verification should be paid extra attention when testing the telephone 11 1 3 Revision change table If there are multiple part numbers for a position
62. hat it isn t because it is stolen If it isn t replace D600 class B fig 2 1 f you get one of these error messages phase and frequency error burst timing power level 5 19 Rx quality or Rx level that differs slightly from the default values try replacing the 4 00021 2 FEA 209 544 1 G 11 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs back cover and run the phone through the test again This applies espe cially for the GA 628 e Ifthe output power is too low or the Rx quality value is too high send the phone to the next level e Ifthe Rx level value is too high the phone has to be calibrated and therefore you have to send the phone to the next level Ifthe Rx level value is below 40 steps at 68 5dBm signal strength below 6 steps at I02dBm signal strength the problem is Rx related Open the phone and check for liquid damage Check the antenna connector X401 class A fig 2 2 and make sure that it isn t damaged or dirty glue varnish oxide and that the solderings aren t faulty Measure the resistance from C426 fig 2 2 measure from the marked side to ground gt 1 Mohms The resistance 15 usually only a few ohms when Z200 class B fig 2 7 18 broken Fig 2 7 Measure the resistance from the anode of V403 class B fig 2 2 to ground 60 kohms e fit sless a few kohms lift one of the V402 pins from the pad and measure again at the same place I
63. he resistance is too high there is a foil damage and the phone is to be dis carded Give the board power and start it by grounding N451 pin 6 fig 6 6 Ifthe phone starts the problem can t be solved at this level fit doesn t start replace V453 class B fig 6 6 f that doesn t help replace V704 class A fig 6 2 When you ve repaired the fault you need to verify the charging function as described in section 6 1 1 6 4 Starts and indicates that it is charging but doesn t charge Open the phone and check for liquid damage Check the system connector pads for oxidation and burn damages especially pad 10 GND fig 6 4 Measure the resistance from DCIO to VBATT 390 ohms fig 6 5 If the resistance 15 too high measure R468 class B 0 1 ohms and R467 class A 390 ohms both of the on fig 6 6 f the values are correct check the resistance from DCIO to R467 0 ohms fig 6 5 6 6 f the resistance is too high there is a foil damage and the phone is to be discarded 4 00021 2 FEA 209 544 1 G 41 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs Check the resistance from GND pad 10 and AGND pad 4 fig 6 5 at the system connector pads ohms If the resistance is too high there is a foil damage and the phone is to be dis carded If the problem isn t solved send the phone to the next level When you ve repaired the fault you need to verify the charging function
64. hms fig 6 3 WDIG a VEAD Fig 6 2 4800 Fig 6 3 If any of the voltages incorrect proceed to chapter 3 Doesn t start fault e Ifthe voltages are correct send the phone to the next level When you ve repaired the fault you need to verify the charging function as described in section 6 1 1 4 00021 2 FEA 209 544 1 G 39 112 ERICSSON GH688 GA628 Standard Electrical Repairs 6 3 Doesn t start when charger is inserted Open the phone and check for liquid damage Check the pads at the system connector for oxidation and burn damages especially on pad 10 GND fig 6 4 Fig 6 4 Measure the resistance from DCIO to VBATT 390 ohms fig 6 5 AGND GMD DEIJ Fig 6 5 e Ifthe resistance is too low replace V453 class B If it is too high measure the resistance in R468 class B 0 1 ohms and R467 Class A 390 ohms all displayed in fig 6 6 f the measured values are correct check the resistance from DCIO to R467 0 ohms fig 6 5 6 6 4 00021 2 FEA 209 544 1 G 40 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs f the resistance is too high there is a foil damage and the phone is to be discarded 453 Towards DUI Ed Es 407 0000 451 C47 Fig 6 6 Check the resistance from GND pad 10 to AGND pad 4 at the system connector 0 ohms fig 6 5 e If t
65. ing in the external mic of the phone If there is low or no sound in the earphone of the phone proceed to section 4 2 e If both the earphone and the handsfree speaker don t work send the phone to the next level If the sensitivity of the microphone is low low or no sound in the reference phone proceed to section 4 3 f both the microphone in the phone and the microphone of the handsfree don t Work send the phone to the next level f both the microphone and the earphone don t work proceed to section 4 4 e Ifthe microphone the earphone and the handsfree don t work send the phone to the next level Ifthe microphone of the handsfree doesn t work proceed to section 4 5 If the speaker of the handsfree doesn t work proceed to section 4 6 f both the microphone and the speaker of the handsfree don t work proceed to section 4 7 e Ifthe phone sounds strange the sound is distorted scrambled full of static or chopped send the phone to the next level 4 2 Earphone out of order Open the phone and check for liquid damages Most of the earphone faults are mechanical Therefore you should start with replac ing the front with the earphone to one you know works and try again Ifthe fault remains make sure earphone connector 7810 fig 4 1 is intact and correctly soldered 4 00021 2 FEA 209 544 1 G 22 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Fig 4 1 Che
66. n change tables GA628 Revision change table for 2 ROA 117 3308 1 2 ROA 117 3308 2 2 117 3308 1 2 117 3308 2 Rog 11733081 Revisions Produet number NM MEA ERE LLL 4 00021 2 FEA 209 544 1 G 100 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 117 3308 1 2 117 3308 2 Product number Product number RJC 464 3035 68 C616 RJC 464 3035 68 RJC 496 2047 1 C616 RJC 496 2047 1 Not mounted C623 Not mounted C662 R3A and higher C662 RJC 496 2047 1 C803 C803 Allrevisions 464 3035 68 All revisions C804 All revisions RJC 464 3035 68 C804 All revisions RJC 464 3035 68 C805 C805 All revisions RJC 464 3035 68 C806 C806 All revisions RJC 464 3035 68 C807 C807 All revisions RJC 464 3035 68 C808 All revisions C808 All revisions Not mounted C902 All revisions RJC 464 3035 68 C902 All revisions RJC 464 3035 68 C903 All revisions RJC 464 3035 68 C903 All revisions RJC 464 3035 68 C904 RJC 464 3035 68 C904 RJC 464 3035 68 All revisions All revisions C905 All revisions RJC 464 3035 68 C905 RJC 464 3035 68 All revisions RJC 464 3035 68 C906 RJC 464 3035 68 RJC 464 3035 68 101 677 2C RID C906 C907 All revisions All revisions All revisions C907 NE GENES All revisions 4 00021 2 FEA 209 544 1 G 101 112 ERICSSON 2 GH 66 GA6
67. nas wm SSS RESISTOR _ wm SSS RESISTOR Secrevisonchangeuwble X RESISTOR wi RESISTOR RESISTOR wi resistor Reres wr Reenaon wwe Ww ws RESISTOR Rees _ RESISTOR See revision change ae 2 RESISTOR Secrevisonchangewble eno O RESISTOR Ru RESISTOR Ru Ru RESISTOR 4 00021 2 FEA 209 544 1 G 7A 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs Pos Designation PartNo Note PRIS RESISTOR rera __ _ _ Rus RESISTOR See revision Rus RESISTOR mEexaam ___ Raw Namens _ Rue RESISTOR REPRO Resistor _ x4 Rexawn RESSTOR 5204521 RESISTOR See revision change ase Normounted R601 RESISTOR REP 622 454 1 Verify portable handsfree func tion RESISTOR R609 Notmouned RESISTOR Soe revision change ase kos RESSTOR freas
68. ne should be discarded f the resistance from VBATT to V706 pad 3 is correct replace V706 class A Measure the resistance from H600 pad 2 to V606 pad 3 10 ohms fig 9 2 If the resistance is too high replace R653 class A fig 9 2 fthe resistance is correct check the soldering at D600 pad 91 fig 9 3 f the soldering 18 correct replace R651 class A fig 9 3 and V606 class A fig 9 2 f that doesn t help replace D600 class B fig 9 3 If the problem isn t solved send the phone to the next level 9 3 Theillumination of the display is missing or faintly glowing Open the phone and check for liquid damage especially at the marked area in fig 9 4 Make sure all the LEDs H651 H652 H653 and H654 all class A fig 9 1 are properly mounted and soldered Fig 9 4 Give the board power and start it up If a few but not all of the LEDs aren t lit replace them f none of the LEDs are lit measure the resistance of one of them 4 00021 2 FEA 209 544 1 G 58 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs e Ifthe resistance is O ohms at least one of them is shorted out The simplest way of finding out which one of them is shorted out is by looking underneath the LED like in fig 9 5 You can usually see dirt beneath the LED that is causing the short circuit f you can t see anything like that remove the LEDs in the following order H654 H651 H653 and finally H65
69. nge ase _ CH CAPACITOR See revision change abe _ CH CAMCHOR asnos capacitor Ricionosh CAACHOR cies CAMCHOR ri GOLCSS CAPACHOR capscror cso SSS CAPACHOR CAPACITOR See revision change ae Ricamswne ooo CwCHOR CH capacitor RiCam3pame _ Cub CAMCHOR RiCasspsn Ci CwACHOR CAMCHOR ooo OoOo CH CACHOR ooo Cus CACHOR ___ _ 60 5606 CAPACITOR Seerovisionchangewble 009 CAPACITOR See revision change ase SSS CAPACHOR O CWi _ 4 00021 2 209 544 1 90 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs CES CAPACITOR _ Seerevisionchangewble _ Normounted name _ CE Named _ cas capacitor Ricamswam _ CH Normounted CH CAPACHOR CAPACITOR See revision changeable _ CHSCHG Namomei NXmomd J _ CAPACITOR C650 CAPACITOR RJC 463 3022 33 Verify handsfree earphone func tion GG CAPA
70. of the voltages to ground 1 too low send the phone to the next level 4 00021 2 FEA 209 544 1 G 19 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 3 4 4 The phone works as long as the On Off key is pressed GH688 Open the phone and check for liquid damages Make sure the system connector pads aren t burnt Insert the board in the fixture Start it up and keep it going by keeping DCIO high Measure the voltage at C692 3 1V fig 3 2 e If there is voltage check the soldering at D600 pin 119 e If there isn t voltage measure the resistance of C692 class A 25200 kohms f the resistance is correct measure the input voltage at N706 pin 2 VBATT and the output voltage at N706 pin 3 3 5V Make sure that the regulator has ground at N706 pin 1 There 15 a foil damage if the ground or VBATT is missing at N706 and the phone should be discarded If the input voltage and the ground are correct replace N706 class f the output voltage is correct measure the voltage at the positive side of the backup capacitor C720 class A 3 1 f there is no voltage replace V711 class A f there 15 voltage check the resistance from the positive side of C720 fig 3 5 to C692 0 ohms f the resistance is too high there 15 a foil damage and the phone should be discarded GA 628 Open the phone and check for liquid damage Make sure that the system connector pads aren t burnt Insert the
71. re the resistance from N450 pads 8 11 12 13 and 14 to ground 0 ohms f the resistance 1s too high there is a foil damage and the phone is to be dis carded f it 1s correct replace the circuit and eventually the transistors V452 V451 and V450 all of them class A If one or two of the voltages are wrong measure the resistance from the corre sponding voltage source to ground gt 50 kohms f the resistance is correct replace the corresponding transistor 4 00021 2 FEA 209 544 1 G 17 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs f that doesn t help replace N450 class A f the resistance of any of the voltage sources is too low send the phone to the next level Measure the amplitude of B551 pin 3 class C gt 1 t t with an oscilloscope spec trum analyzer frequency counter diode probe If the amplitude is too low send the phone to the next level Check for bad solderings at D600 D610 and D620 fig 3 2 If they look ok replace D600 class f that doesn t work first replace D610 class A and then D620 class Try to program the phone in the flash programmer for every circuit you replace Don t replace any circuit if you haven t established the fact that 8551 is working 3 4 2 15 programmable in the flash programmer but doesn t start afterwards or is troublesome in the flash programmer Open the phone and check for liquid damages Make sure th
72. replaced 4 00021 2 FEA 209 544 1 G 3 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 1 2 iur 4050 EUM ee lt Abbreviations The power module at some phones Crystal Capacitor Digital circuit Over voltage protection VCO Buzzer LED pads for display Connector Coil Analogue circuit Resistor Keyboard pads BALUN A circuit that converts a signal from balanced to unbalanced or the Opposite Transistor or diode Contact surface at the circuit board Filter AGND Ground for analogue signals DCIO DC voltage used for charging the battery through the system connector DCON Logical signal from the processor that keeps the phone running after you ve released the On Off key EXTAUD Input signal at the system connector that the processor uses to deter mine if there s any external audio equipment attached EXTAUDI The same signal as the EXTAUD signal but at the processor side GND Ground LED3K Logical signal used to activate the background illumination ONSRQ Voltage from the On Off key that starts the phone PORTHF signal at the system connector that the processor uses to deter PHFI mine if there s any handsfree equipment attached The same signal as but at the processor side REGON Logical signal that activates the voltage regulators RTC Real time clock The clock that keeps track of time and date
73. replaced with RJC 463 3022 12 RJC 463 3022 12 C69 Up to R2A RJC 463 3022 12 C69 R3B and higher RJC 463 3022 12 R3B C691 R2B R3A RJC 463 3022 18 C69 Upto R3A RJC 463 3022 18 When replacing D600 on When replacing D600 on revisions R2B and revisions R2B and pos C690 amp C691 pos C690 amp C691 MUST be replaced with MUST be replaced with RJC 463 3022 12 RJC 463 3022 12 C711 RJC 464 3024 12 C711 RJC 464 3024 12 C730 RJC 464 3047 1 C730 RJC 464 3047 1 C802 RJC 464 3035 68 C802 RJC 464 3035 68 C803 RJC 464 3035 68 C803 RJC 464 3035 68 C804 RJC 464 3035 68 C804 RJC 464 3035 68 C805 RJC 464 3035 68 C805 RJC 464 3035 68 C806 RJC 464 3035 68 C806 RJC 464 3035 68 C807 RJC 464 3035 68 C807 RJC 464 3035 68 C902 RJC 464 3035 68 C902 RJC 464 3035 68 C903 RJC 464 3035 68 C903 RJC 464 3035 68 C904 RJC 464 3035 68 C904 RJC 464 3035 68 C905 RJC 464 3035 68 C905 RJC 464 3035 68 C906 RJC 464 3035 68 C906 RJC 464 3035 68 C907 RJC 464 3035 68 C907 RJC 464 3035 68 4 00021 2 FEA 209 544 1 G 81 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 2 ROA 2 ROA 2 ROA 1173307 1 1173307 5 1173307 3 Revisions Part number Revisions Part number D600 revisions ROP 101 678 2C R2A D600 revisions ROP 101 678 2C R2A When replacing When replacing D600 on revisions D600 on revisions R2B and R2B and pos C690 amp pos C690 amp C691 MUST be C691 MUST r
74. s are correct check the solderings of N800 and D600 fig 4 3 and 4 2 If the fault remains send the phone to the next level 4 00021 2 FEA 209 544 1 G 29 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs 5 Display 5 1 Kind of fault Insert a fully charged battery and start it up using the On Off key If it doesn t start proceed to chapter 3 t start fault If the display is missing one or more segments proceed to section 7 2 If the display is totally empty proceed to section 7 3 1 If the contrast 1 low proceed to section 7 3 2 If the all the segments in the display are proceed to section 7 4 5 2 Segments are missing Open the phone and check for liquid damage Replace the display Observe that there are two kinds of display for GH 688 5 3 display is totally empty or the contrast is low 5 3 1 The display is totally empty Start the phone using a dummy battery Check the current consumption If the phone consumes more than 200mA check the display and see if it is dam aged f it isn t replace the elastomer and try again f it doesn t help replace the display and try again If the current con sumption still is high proceed to chapter 3 Doesn t start fault If the phone consumes less than 200mA open the phone and check for liquid damages 4 00021 2 FEA 209 544 1 G 30 112 ERICSSON 2 GH 66 GA626 Standard Electrical Repairs 5 3 2 Th
75. t replace R607 class A 9 4 The keyboardillumination is missing or faintly glowing Open the phone and check for liquid damage especially at marked area in fig 9 4 Make sure that all the LEDs H655 H660 class A fig 9 6 are physically intact cor rectly mounted and soldered Give the board power and start it up If a few but not all of the LEDs are lit replace them f none of the LEDs are lit make sure that the VBATT voltage is at marked side of the LEDs f VBATT is missing it most likely means that the phone is liquid damaged If VBATT is correct check that R612 0 ohms class R611 47 ohms class A R610 27 ohms class A and R606 0 ohms class A are properly mounted and that they have the correct resistance all in fig 9 6 Table 1 shows symptoms when the resistance of the resistors are incorrect f none of the LEDs H651 H654 H655 H660 fig 9 1 and 9 6 are lit measure the voltage at the marked side of R607 3 1V fig 9 3 Before you measure you have to press a key on the phone to make the processor set the LED3K signal high for about 10 seconds f the voltage is missing check the soldering at D600 pin 92 fig 9 3 f the soldering 1 correct replace D600 class B f the voltage is correct replace R607 class A 4 00021 2 FEA 209 544 1 G 60 112 ERICSSON 2 GH666 GA626 Standard Electrical Repairs 9 5 Green LED at the topindicator doesn t work Open the phone an
76. t replace the buzzer Assemble the phone and test the buzzer again according to 9 1 f the problem is solved send the phone through the usual flow If the fault remains disassemble the phone Give the board power and start it up Measure the voltage at H600 pad 1 3 3V fig 9 2 4 00021 2 FEA 209 544 1 G 56 112 ERICSSON 2 0068 04628 Standard Electrical Repairs V8ll6 3 iL 00 E ROS R54 uen en 7 57706 3 v706 2 17706 Fig 9 2 If the voltage is missing at H600 pad 1 measure VRPAD 3 8V at V706 pad 2 class A fig 9 2 If the voltage at V706 pad 2 is missing check if VRPAD is at C453 fig 9 3 VEPAD C455 pan tata m 2600 ri 2 5651 607 Fig 9 3 f VRPAD is incorrect or missing proceed to chapter Doesn t start fault If the voltage at C453 15 correct check the resistance from C453 and V706 pad 2 0 ohms 4 00021 2 FEA 209 544 1 G 57 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs f the resistance is too high there 15 a foil damage and the phone should be discarded f VRPAD at V706 pad 2 15 correct measure the resistance from VBATT to V706 pad 3 4 7 ohms fig 9 2 f the resistance is too high replace R652 class A fig 9 2 f the resistance is still too high after replacing R652 there is proba bly a foil damage somewhere between VBATT and marked side of R652 and the pho
77. urnt or damaged pads at the system connector and faulty soldering at for instance D600 D610 and D620 fig 3 2 4 00021 2 FEA 209 544 1 G 13 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs GH688 VDSP VDIG N702 wena C710 2810 Lm E 000 VDSP HUI C710 d 10 628 Fig 3 2 As soon as the problem is solved send the phone through the flow as usual 4 00021 2 FEA 209 544 1 G 14 112 ERICSSON 2 GH688 GA628 Standard Electrical Repairs 3 2 Visual check Make a visual check Make sure that the battery screws are intact and properly mounted that the isolator sleeve 688 is properly mounted that the volume keys aren t stuck and that the system connector isn t dirty or liquid damaged Con tinue at 3 3 3 3 Current consumption with On off key pressed Insert a dummy battery e Ifthe phone consumes current immediately it usually means that C403 class fig 3 3 1s faulty but first you should make sure that the frame gasket isn t in con tact with the positive battery connector pad at the circuit board fig 3 4 C403 1 TET 0000 Fig 3 3 i zz aL Lou t Pd eed 5 Mu Tu Ue T LT gt gay deck al r r mee un M M a sre M FA b ud d i TT 5

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