DN780 Service Manual - Vintage Digital Effects
Contents
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3. DN780 SERVICE MANUAL 13 AUG 85 GENERAL SYSTEM OVERVIEW The DN780 Reverberator Processor is split up into six circuit boards as follows l Power Supply Board 2 Front Panel Display Board 3 Microprocessor Board 4 D S P Digital Signal Processor Board 5 Convertor Board 6 Audio In Out Board The circuit block diagram shows the interconnection between these boards 1 POWER SUPPLY BOARD This section converts the A C mains voltage to the required D C voltages It contains all the mains voltage switches mains transformer secondary low voltage fuses rectifiers and regulators to supply all the other boards and the remote unit with stabalized D C Power FRONT PANEL DISPLAY BOARD This board contains the audio level control and headroom indicator and the primary user interface which consists of the function keys the display and display drivers These are controlled by the microprocessor board MICROPROCESSOR BOARD This is the primary control for the DN780 It decodes and displays information via Front Panel Board It contains the remote interface circuitry It stores all the user programs in its non volatile memory and it has direct control over the D S P Board 4 D S P BOARD This is a very high speed digital signal processor which is dedicated to perform all the computation required for Reverberation and other audio signal processing algorithms The board contains V L S I multiplier accumul
4. 1 001 E4 AP300 1 61 1 08032 1 035 1 002 4 55 1 002 1 0002 E8 A0016 E8 A0017 E3 BA500 3 80005 E3 BAO10 F1 GCO61 2 0 031 1 40 1 195 22222020 ve ux E am Gm um m Gm GRO OR AV IdSIG IO eLLNOO 0vSc ON GUE DONI CAE NH NOSS3203d 0321 LNO NI OldnY dH BE92 ON GE92 ON 14405 epe dANOO TY DN780 PLAN VIEW 2 03 JUN 85 i l 3C3 2 3 meet ani A A C 8898 9068 H 3 DN780 PLAN VIEW No 4 07 JUL 85 9 dud LINN ALONAY 084 9 5 n to e 1 osi wre fos i O Momma Oo Q o CH O t amu cas ave a 5D 20 aao amen le ron 01 os M O Y aw E 2 04 mwn ame 7 t iron iw 2 3ms ot lo MOTTA CD I ws o Ex zd Ot 034 ou
5. 1 0 90 E DN780 DISPLAY BOARD Seas Seem ee VALUR QTY KTR NO D10 GREEN LED SHOUDED GREEN LED SHOUDED 1 D1 AQY9 011 GREEN LED SHOUDED GREEN LED SHOUDED 1 9 D12 DIODE 1N4148 1 01 414 013 DIODE 1N4148 1 1 414 4 RED LED 3mm ROUND GL 3AR2 1 D1 AL20 D15 YELLOW LED 3mm YELLOW LED 3mm 1 D1 AY20 6 YELLOW LED 3mm YELLOW LED 3mm 1 D1 AY20 D17 GREEN LED 3mm GREEN LED 3mm 1 D1 AQY9 D18 GREEN LED 3mm GREEN LED 3mm 1 D1 AQY9 D19 GREEN LED 3mm GREEN LED 3mm 1 D1 AQY9 D20 GREEN LED 3mm GREEN LED 3mm 1 D1 AQY99 D21 GREEN LED 3mm GREEN LED 3mm 1 D1 AQY9 D22 GREEN LED 3mm GREEN LED 3mm 1 Dl1 AQY99 D23 GREEN LED 3mm GREEN LED 3mm 2 D1 AQY9 Icl CURRENT SOURCE QUAD 1417 2580 1 02 02580 IC2 CURRENT SINK QUAD ULN 2068 1 02 02064 IC3 CURRENT SINK QUAD ULN 2068 1 2 0206 Ic4 CMOS IC 4514 1 04 14514 1045 24 PIN DIL SOCKET 24 PIN DIL SOCKET l E2 ES241 IC5 CURRENT SINK QUAD ULN 2068 1 02 02064 6 CURRENT SINK QUAD ULN 2068 1 2 02068 IC7 7 SEG DISPLAY ORANGE 01107 0 1 1 8 0 7 SEG DISPLAY ORANGE 1107 0 1 D1 BHO07 9 7 SEG DISPLAY GREEN HD1107 G 1 D1 BHGO ICIO 7 SEG DISPLAY GREEN HD1107 G 1 01 07 1 11 7 SEG DISPLAY GREEN HD1107 G 1 D1 BHGO IC12 1 SEG DISPLAY GREEN HD1108 G 1 7 SEG DISPLAY GREEN HD1107 G 1 D1 BHGO Ee 1 14 1 SEG DISPLAY GREEN HD1108 G l D1 BHGO 15 7 SEG DISPLAY
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7. F1 CC252 F1 ABOO2 F1 ADOO2 E4 P3B14 1 001 1 002 DN780 FRONT PANEL ASSEMBLY ZHl DN780 FAL FA2 5 1 5 2 1 2 2 ZA3 2 4 ZA5 2 6 2 1 ZB2 283 2 1 ZC2 201 2 1 2 1 ZH2 ZH3 ZH4 DN780 CAlA 4 CA6A 7 CA8A CA9A 11 CAPACITOR CERAMIC SIFAM KNOB COLLET SIFAM CAP SCREW SCREW TAMPERROOF SCREW SHAKEPROOF WASHER SOLDER TAG NUTS LOCKNUT M3 NYLON SPACER DN780 FRONT PANEL CHASSIS ASSEMBLY FAN MICRONEL FAN FINGER GUARD RECTANGULAR CAP MOLEX 2WAY SKT HSG MOLEX SOCKET TERM THUMB SCREW COARSE SCREW SCREW SCREW SCREW SCREW WASHER PLASTIC RED SHAKEPROOF WASHER SHAKEPROOF WASHER NUTS NUTS PILLAR 35MM TYRAPS DN780 CHASSIS DN780 COVER PAIR DN780 REAR PANEL DN 780 HINGE CABLING KIT l6 WAY SOCKET 16 WAY SOCKET 20 WAY IDC RIB SOCKT MOLEX 6WAY SKT IDC 34 WAY IDC CONNECTOR 8WAY CABLE PLUG PLUG MOLEX 6WAY SKT IDC 6WAY CABLE PLUG PLUG 6WAY CABLE PLUG PLUG 8WAY CABLE PLUG PLUG MOLEX 6WAY SKT IDC 47N 11MM 4MM SFT BLK LIN 11MM GREY LINE M3 X 10 RSD CSK CHRO M3 X 6 RSD CSK CHROM M3 12MM M3 BZP M3 TIN M3 BZP LOCKNUT M3 6 6 M3 CLR SPACER DN780 FRONT PANEL 52MM 12VAC 52MM FAN TYPE SMALL RED 0 1 2WAY SOCKET HSG MOLEX TERMINAL M4 1 OMM M3 X 10 P HD M3 X 6 P HD BZP M4 X 6 P HD CHROME M3 X 6 RSD CSK CHROM M3 X 10 RSD CSK CHRO M4 CLIP TYPE M3 BZP M4 BZP M3 BZP
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9. 00 to calibrate P2 FAULTY REMOTE By running the diagnostic routines the following operations of the Remote can be checked Option Ol LED s operate 02 the keys are functioning 03 the sliders are working 04 the sliders are not noisy If the unit fails any of the above tests the fault most likely lies in the remote cable or box If on replacement the fault still exists the fault lies on the Micro Board INTERMITTENT OPERATION By using the diagnostic facilities most operations of the unit can be tested If these appear OK A check on the following should be done a the unit is earthed by the mains cable b all internal cables and boards are fully secure 11 IC s in sockets are firmly in place d DC power rails are stable and within limits ON 4 8v 5 2v EIV o9 904 7 15 14 8 15 2 214 91 14 8 15 2 13 00 13 01 13 02 13 03 13 04 13 05 13 06 13 07 13 08 13 09 13 10 e mains supply is clean stable and within limits set by the voltage selector f the fan is running g unit has adequate ventilation Maximum ambient temp 40C LEVEL SETTING GUIDE Note The Ov chassis terminal located on the input XLR chassis fixing can be used for the ground common connection to the test equipment Select program 3l DELAY LINE Set delay to zero Inject 1 2 sinewave 0 41048 into INPUT socket
10. 1 X 6PIN SET LATCH 1 E2 BPO61 ST6 MOLEX 8 PIN LATCHED 0 1 8 LATCHED 1 2 82 MOLEX 6 PIN 0 1 X 6PIN SET LATCH 1 E2 BPO61 MOLEX 6 PIN 0 1 X 6PIN SET LATCH 1 E2 BPO6 T2 AUDIO TRANSFORMER OUT CANNED PIKATRON 1 E5 TAOO Tj AUDIO TRANSFORMER OUT CANNED PIKATRON 1 5 007 ZA2 SCREW No 4 SELF TAP 3 1 049 782 WASHER NYLON WASHER 3 F1 CB035 ZB3 SHAKEPROOF WASHER M4 BZP 1 1 0 042 2 1 NUTS M4 CAD PASS 11 F1 ACO02 201 PILLAR 35MM M4 THREAD TAPPED 1 E4 P4B35 DN780 POWER SUPPLY BOARD C1 CAP ELECTROLYTIC RAD 470 35 1 B4 DD347 C2 ELECTROLYTIC RAD 470 35 1 B4 DD347 C3 CAP ELECTROLYTIC RAD 15000 16V 1 B4 DB51 4 CAPACITOR CERAMIC 47N 1 B2 2A047 C5 CAPACITOR CERAMIC 47N 1 2 2 047 C6 CAPACITOR CERAMIC 47N 1 B2 2A047 e CAPACITOR CERAMIC 47N 1 2 2 047 8 ELECTROLYTIC RAD 6800 16V 1 B4 DB468 D1 DIODE 1N4002 1 01 4004 D2 DIODE 1N4002 1 D1 A4002 D3 DIODE 154002 1 D1 A400 D4 DIODE 1N4002 1 D1 A400 D5 DIODE 1N4002 1 1 400 6 DIODE 1N4002 1 1 400 25 211 POWER SUPPLY BOARD DIODE BRIDGE DIODE 6 AMP DIODE DIODE FUSE HOLDER FUSE HOLDER FUSE HOLDER FUSE FUSE FUSE FUSE HEATSINK HEATSINK HEATSINK HEATSINK REGULATOR 15V REGULATOR 15V REGULATOR 5V REGULATOR 5V 5A ZERO OHM LINK PCB 2642 5 RESISTOR 5 RESISTOR MOLEX 6 PIN STRAIGHT MOLEX 6 PIN STRAIGHT MOLEX 6 PIN STRAIGHT MOLEX 6 PIN MOLEX 2 PIN LATCHED TO3 SOCKET IEC MAINS INPUT
11. 2 0 The display will show dos and the store LED will flash Enter 2 digit keys to select option Pressing 00 will exit and restart the unit CAUTION Beware of option 09 this will erase all user memories including protected ones When this utility has been selected and the diagnostics are exit ed the unit will display bAt Lo to show that the back up memory has been corrupted OPTIONS 00 Exit diagnostics and restart unit memory 01 will load 01 Display segments test Press for segment decay 02 Button test Pressing any button including remote but excluding IN will cause the unit to display the key name plus a hex code Press to exit 03 Remote slider test Moving any slider will cause the unit to display it s relative HEX position and cause the associated track LED and the remote LED to flash The HEX position display should range from 00 to FF To exit press any button 13 04 05 06 07 08 09 Remote slider noise test With the remote sliders static the display will show the peak noise The number range is 0 9 Values less than 4 are satisfactory values above 4 could cause a disturbance in the parameter settings if the REMOTE is armed To exit press any button Complete check of DSP memory IC s 53 54 Errors reported Complete check of DSP memory IC s 47 48 Errors reported DSPCOF memory status To exit press Processor status display
12. 4564 150 5 16 PIN DIL SOCKET 4564 150 5 16 DIL SOCKET 4564 1505 16 PIN DIL SOCKET 74F08 74LS158 74LS158 74LS283 7415283 7415283 7415283 7415374 7415393 7415374 7418393 741 574 16 QTY KTR NO t rrr E2 ES181 D3 7F257 D3 7F257 D3 7F257 D3 7F257 D3 7A086 D3 7A122 D5 X1010 E2 ES641 D5 F64K1 2 5161 D5 F64K1 E2 ES161 05 64 1 E2 ES161 5 64 E2 ES161 D5 F64K1 E2 ES161 D5 F64K1 E2 ES161 5 64 1 E2 ES161 D5 F64K1 E2 ES161 5 64 1 E2 ES161 5 64 1 2 5161 5 64 1 2 5161 D5 F64K1 E2 ES161 D5 F64K1 E2 ES161 D5 F64K1 E2 ES161 D5 F64K1 E2 ES161 5 64 1 E2 ES161 23 72008 D3 7A158 D3 7A158 D3 7A283 D3 7A283 D3 7A283 D3 7A283 D3 7A374 D3 7A393 D3 7A374 D3 7A393 D3 7A074 D S P 32 X 8 PROM IC 18 PIN DIL SOCKET 1 4 SRAM 18 PIN DIL SOCKET 18 PIN DIL SOCKET 1 4 SRAM 18 PIN DIL SOCKET 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 8 COMMON RESISTO PAK 4 ISOLATED RESIS PAK 4 ISOLATED RESIS PAK 3 ISOLATED RESIS PAK 20PIN RT IDC HEADER 16 PIN DIL SOCKET 74LS374 74LS374 2148 18 PIN DIL SOCKET 2148 18 PIN DIL SOCKET 74LS245 74LS163A 74LS163A 74LS163A 2148 18 PIN DIL SOCKET 2148 18 PIN DIL SOCKET 7415245 7415367 7415367 74
13. CERAMIC CAPACITOR CERAMIC CAP TANTALUM RADIAL CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC ZENNER DIODE REFERENCE DIODE RED LED 3mm ROUND DIODE DIODE ZENNER DIODE TTL IC LS CMOS IC 14 PIN DIL SOCKET A D CONVERTOR IC TTL IC LS TTL IC LS TTL IC FAST TTL IC LS TTL IC LS TTL IC LS TTL IC LS TTL IC LS MICROPROCESSOR IC SUPPLY MONT RESET TTL IC LS TIL IC LS DISPLAY KEYBRD IC TTL IC 15 16 WAY RIGHT HEADER 16 RIGHT HEADER 0 156 6P RIGHT ANG CRYSTAL 15MHz LIM2016P1 15MFD 15MFD 15MFD 15MFD 10N 33N 5 47N 15 16V 47N 47N 47N 22 16V 47N 47N 47N 47N 2 2 16V 47N 47N 47N 47N 47 3v6 400mw 2 45V REF GL 3AR2 1N4148 1N4148 3V6 400mw 74LS04 4016 14 PIN DIL SOCKET 7002 74LS245 74LS74 74F04 74LS377 74LS373 74LS04 74LS10 74LS138 Z80A TL 7705 74LS74 741 503 8279 7415138 18 MEM gt gt gt QTY KTR NO P2 HP pH H HP RP RP ERP RRP RRR RP RP RP RP RRP RR RB RP RRP RRP RR HBP RB RR HRP HER E2 CP163 E2 CP163 E2 BP063 E5 A0003 E3 D0004 B1 20150 B1 20150 B1 20150 B1 20150 B1 20010 B1 20033 B2 2A047 4 215 B2 2A047 B2 2A047 B2 2A047 B4 TB222 B2 2A047 B2 2A047 2 2 047 B2 2A047 B4 TB122 B2 2A047 B2 2A047 B2 2A047 B2 2A047 B2 10047 D1 A03V6 1 2404 D1 AL209 D1 A4148 D1 A4148 D1 A03V6 D3 7A004 D4 14016 E2 ES141 05 0002 03
14. Enter next option to continue Complete check of CMOS back up memory MICRO IC 21 takes a few seconds status displayed Errors reported WARNING ALL USER MEMORIES ERASED 10 14 Not used 15 16 Continuous R W to DSP memory IC s 53 54 To exit press any button Continuous R W to DSP memory IC s 47 48 To exit press any button 18 PIN DIL SOCKET 18 PIN DIL SOCKET DN780 PARTS LIST DN780 D S P BOARD REF ITEM 47N C6 CAP TANTALUM RADIAL 4 7 16V CAPACITOR CERAMIC 47N c9 CAPACITOR CERAMIC 47N C10 CAPACITOR CERAMIC 47N 11 CAPACITOR CERAMIC 47N C12 CAPACITOR CERAMIC 47N C13 CAPACITOR CERAMIC 47N C16 CAPACITOR CERAMIC 47N C17 CAPACITOR CERAMIC 47N C18 CAP TANTALUM RADIAL 22 16V C19 CAPACITOR CERAMIC 47N C20 CAPACITOR CERAMIC 47N C21 CAPACITOR CERAMIC 47 C22 CAPACITOR CERAMIC 47N C23 CAPACITOR CERAMIC 47N C32 CAPACITOR CERAMIC 47N C33 CAPACITOR CERAMIC 47N C36 CAP POLYSTRENE 2 5 120PF C38 CAPACITOR CERAMIC 47N C39 CAP TANTALUM RADIAL 2 2 16V C40 CAP TANTALUM RADIAL 2 2 16V C41 CAP TANTALUM RADIAL 2 2 16V C42 CAP TANTALUM RADIAL 2 2 16V C43 CAP TANTALUM RADIAL 2 2 16V C44 CAP TANTALUM RADIAL 2 2 16V C45 CAP TANTALUM RADIAL 2 2 16V C46 CAP TANTALUM RADIAL 2 2 16V C47 CAPACITOR CERAMIC 47N C48 CAPACITOR CERAMIC 47N C49 CAPACITOR CERAMIC 47N C50 CAPACITOR CERAMIC 47N C51 CAPACITOR CERAMIC 47N C52 CAPACITOR CERAMIC 47N C53
15. GREEN HD1107 G D1 BHGO 16 7 SEG DISPLAY GREEN HD1107 G 1 D1 BHGO IC17 7 SEG DISPLAY GREEN HD1107 G l 1 8 1018 7 SEG DISPLAY GREEN HD1107 G l D1 BHGO 19 7 SEG DISPLAY GREEN HD1107 G 1 D1 BHGO IC20 7 SEG DISPLAY GREEN HD1107 G 1 D1 BHGO IC21 7 SEG DISPLAY GREEN HD1107 G 1 D1 BHGO IC22 LINEAR IC DUAL TLO72 1 D2 0L07 225 8 5 8 PIN DIL SOCKET 1 2 508 IC23 LEVEL DISPLAY DRIVER LM3915 l D2 L3915 Ll ZERO OHM LINK ZERO OHM LINK 4 000 1 POT SING 4MM 5 10K LIN 1 A3 0C100 P2 72XW TYPE PRESET 72XW 20K 1 A3 D202 2635 DN780 DISPLAY BRD 1 6 0263 Rl 5 RESISTOR 33R 1 1 1003 R2 5 RESISTOR 33R 1 A1 1003 R3 5 RESISTOR 33R 1 A1 1003 R4 5 RESISTOR 33R 1 A1 10033 R5 5 RESISTOR 33R 1 1 1003 R6 5 RESISTOR 33R 1 1 1003 R7 5 RESISTOR 33R l A1 1003 R8 5 RESISTOR 33R 1 1 1003 R9 2 RESISTOR 10K 1 1 3001 R11 5 RESISTOR 82K 1 1 3008 23 2 20 a waar R18 5 RESISTOR 1K 1 X eats R19 5 RESISTOR 470R 1 1 10470 20 5 RESISTOR 680R 1 1 10680 25 4 R21 5 RESISTOR 4K7 1 1 14700 4 STl MOLEX 34P SHROUDED 2X17PIN SHROUDED SET 1 E2 BP341 ST2 MOLEX 6 PIN STRAIGHT 0 156 6PIN STRAIT 1 E2 BP064 E ST3 MOLEX 6 PIN 0 1 X 6PIN SET LATCH 1 E2 BP061 3 581 MOMENTRY PUSH SWITCH ANTHRACITE 9 1 1 E1 BG125 SW2 MOMENTRY PUSH SWITCH ANTHRACITE l 1 124 z 583 MOMENTRY PUSH SWITCH ANTHRACITE 7 1 l 1 123 sw4 MOM
16. Monitoring level at Pin 1 SKT2 on Convertor Board adjust LEVEL CONTROL for a level of 5 5dBu at Pin 1 SKT2 Set preset P2 on Front Display Board so that the 3dB LED yellow on the Level Meter just illuminates Adjust LEVEL CONTROL for a level of 8dBu at Pin 1 SKT2 on Convertor Board Check level at Pin 3 or Pin 8 of SKT2 on Convertor Board and adjust preset Pl on Convertor Board for a level of 8dBu The OAB LED red and the O L LED Dl on the D S P Board should both be on Setting Output Level s The output level presets are accessible from the rear of the unit With the conditions set as described in 13 01 02 03 and the LEVEL CONTROL adjusted so that the OdB LED red is just on the signal level at the OUTPUT sockets will be apporoximately 2 5dB s below the internal clipping point of the unit This level is factory set at 8dBu and can be adjusted by the output level presets up to a maximum of 18dBu 1 NU 0 UN 14 00 C M R R SETTING electronically input balanced units 14 01 Set program 31 DELAY LINE delay at zero and the LEVEL POT at approximately mid position 14 02 Join Pins 2 and 3 of the input XLR together and inject a 100Hz sine wave across Pins 2 amp 3 and Pin 1 ground See figure 2 INPUT XLR SIGNAL GROUND COMMON figure 2 14 03 While monitoring level at either Output Socket adjust pr
17. RAD 470 16V 1 347 ers CAP ELECTROLYTIC RAD 470 16 1 B4 DB347 14 CAPACITOR CERAMIC 47N 1 2 2 047 15 CAPACITOR CERAMIC 47N 1 B2 2A047 C16 CAPACITOR CERAMIC 47N l B2 2A047 C17 CAPACITOR CERAMIC 47N 1 2 2 047 ICl LINEAR IC DUAL NE5532 l D2 05532 IClS 8 PIN DIL SOCKET 8 PIN DIL SOCKET 1 2 5082 2 LINEAR IC DUAL NE5532 1 2 05532 24 DN780 AUDIO IN OUT BOARD VALUE QTY KTR NO IC2S 8 PIN DIL SOCKET 8 PIN DIL SOCKET 1 2 508 Ll ZERO OHM LINK ZERO OHM LINK 10 A3 A0001 L2 PRE CUT WIRE BLUE 7 0 2 60MM 1 G3 BIBEI Pl PIHER VER PRESET 220R 1 A3 G122 P2 72X TYPE PRESET 72X 10K 1 A3 H201 P3 72X TYPE PRESET 72X 10K 1 2019 PCl PCB 2641 DN780 AUDIO IN OUT 1 E6 02641 R3 1 RESISTOR 1 1 2 1010 R4 1 RESISTOR 10K 1 2 1100 RS 1 RESISTOR 1 2 1100 R6 1 RESISTOR 10K 1 A2 1100 R7 5 RESISTOR 1 1 1 1100 1 RESISTOR 1K 1 A2 1010 R9 1 RESISTOR 10K 1 2 1100 R10 5 RESISTOR 1 1 1 1100 Rll 1 RESISTOR 10K 1 A2 1100 R12 5 RESISTOR 2K7 1 1 1270 R13 5 RESISTOR 1K2 1 1 1120 R14 5 RESISTOR 2K7 1 Al 1270 R15 5 RESISTOR 2K7 1 A1 1270 R16 5 RESISTOR 1K2 1 1 1120 17 58 RESISTOR 2 7 1 1 12700 5 XLR 3 INPUT PANEL MOUNT PCB HORZ 1 2 34 5 2 XLR OUTPUT 3 PANEL MOUNT PCB HORZ 1 E2 AS034 ST3 XLR OUTPUT 3 PANEL MOUNT PCB HORZ 1 2 5034 5 4 MOLEX 6 PIN 0 1 X 6PIN SET LATCH 1 E2 BPO6 5 5 MOLEX 6 PIN 0
18. 1 502 74 04 741574 741527 741508 741 504 741532 741574 741504 DN780 DSP BRD 2K2 1K 22K 5K6 680R 100 8 1 5 4 ISOLATED 47R 4 ISOLATED 47R 3 ISOLATED 47R 20PIN RT IDC HEAD PC 17 f E ne 03 7 000 3 7 374 D3 7A374 3 7 174 D5 P7603 E2 ES161 D3 7A374 D3 7A374E D5 F2148 2 5181 05 2148 2 5181 D3 7A245 03 7 163 D3 7A163 03 7 163 amp 05 2148 2 5181 05 2148 2 5 181 EE D3 7A245 3 7 367 D3 7A367 3 7 002 D3 7F004 23 7 074 amp D3 7A027 03 7 008 3 7 004 23 7 032 03 7 074 3 7 004 6 02638 Al 12200 amp 1 11000 1 30022 1 15600 1 10680 1 11000 1 10680 1 11000 1 10220 1 12200 Al 11500 amp A1 10220 Al 10150K A1 12200 Al 10100K A3 C8215 A3 C4047K 3 4047 A3 C3047R E2 BP204 1010 1 14 15 16 17 16 WAY PIN HEADER 16 WAY PIN HEADER MOLEX 6PIN RT ANGLE CRYSTAL 15MHz MICRO PROCESSOR BOARD LITHIUM BATT DN780 CAPACITOR PLASTIC 58 CAPACITOR PLASTIC 5 CAPACITOR PLASTIC 5 CAPACITOR PLASTIC 5 CAPACITOR PLASTIC 5 CAPACITOR PLASTIC 5 CAPACITOR CERAMIC CAP TANTALUM RADIAL CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAP TANTALUM RADIAL CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR
19. 1 E2 BPO21 1 CRYSTAL 4MHZ XTAL 4 MEG 1 E5 A0002 2 1 SCREW M3 X 10 P HD C P 2 F1 GB102 ZA2 PAIR DEE TYPE SCREWS FEMALE 2 1 20004 281 SHAKEPROOF WASHER M3 BZP 2 1 08032 ZCL NUTS M3 BZP 2 1 2 DN780 CONVERTOR BOARD CAPACITOR CERAMIC 47N 1 B2 2A047 c5 CAPACITOR CERAMIC 47N 1 2 2 047 C7 CAPACITOR CERAMIC 47N 1 B2 2A047 ca CAPACITOR CERAMIC 47N 1 2 2 047 C10 CAPACITOR CERAMIC 47N 1 2 2 047 11 CAP TANTALUM RADIAL 2 2 16V 1 B4 TB122 ELD CAPACITOR CERAMIC 47N 1 B2 2A047 C13 CAPACITOR CERAMIC 47N 1 B2 2A047 C14 CAP TANTALUM RADIAL 2 2 16V 1 4 122 C17 CAP POLYSTYRENE 2 5 560PF 1 B3 10560 C18 CAP TANTALUM RADIAL 2 2 16V 1 B4 TB122 C19 CAPACITOR CERAMIC 47N 1 B2 2A047 C20 CAP TANTALUM RADIAL 2 2 16V 1 4 122 C21 CAPACITOR CERAMIC 47N 1 2 2 047 22 TANTALUM RADIAL 2 2 16V 1 4 122 C23 CAP POLYSTYRENE 2 5 1N5 1 B3 11500 C26 CAP POLYSTYRENE 2 5 185 1 B3 11500 C29 CAP POLYPROPYLENE 6N8 2 53 1 B6 16800 C30 CAP POLYSTYRENE 2 53 1N8 1 11800 C31 CAP POLYPROPYLENE 6N8 2 5 1 B6 16800 C32 CAP POLYSTYRENE 2 5 1N8 1 B3 11800 ee he CAP POLYPROPYLENE 6N8 2 53 1 B6 16800 C34 CAP POLYSTYRENE 2 55 148 1 B3 11800 C35 CAP POLYPROPYLENE 6N8 2 53 1 B6 16800 C36 CAP POLYSTYRENE 2 5 1N8 1 B3 11800 C40 CAPACITOR PLASTIC 5 2N2 1 B1 12200 C41 CAPACITOR PLASTIC 5 2N2 1 1 12200 C43 CAP POLYPROPYLENE 6NB 2 53 T B6 16800 C44 CAP POLYSTYRENE 2 5 188 1 11800 C45 CAP POLYPROPYLENE 6N8 2 5 3 B6 16800
20. 222 4 21 D1 A4148 1 414 1 05 1 03 7 37 D3 7A373 D3 7A37 4 D3 7A374 D3 L250 E2 ES161 D3 L250 5 E2 ES161 D5 DA53 E2 ES241 D5 DA53W Z E2 ES241 D3 7A39 D5 P7603 2 516 2 3 7 377 D3 7A00d amp D3 7A004 D2 LM31E 2 5082 D2 DG21 ES E2 ES161 D2 OLO7 2 2 5082 D2 DG21 E2 ES161 02 0107 2 5082 D2 0553 2 2 5082 2 0 2 009 2 2001 205 7 E6 02639 1 1004 1 10010 1 1820 6 A1 30010 1 115 04 2 1 14700 1 1012 2 1 15100 1 1068 2 A1 15600 RRR RP RP RRP RP RP EP RP RRP RP RP RP EP RP RP BP EP BE RE EP RP BP RP RP RRR PP PP PRP p p p E R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R24 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 ST4B aguuuuuuuuuuuuuuuguiuducccTTTTTT d CONVERTOR BOARD 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 1 RESISTOR 1 RESISTOR 1 RESISTOR 1 RESISTOR 1 RESISTOR 1 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 1 RESISTOR 1 RESISTOR 1 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 ISOLATED RESIS PAK 5 ISOLATED RESIS PAK 5 ISOLATED RESIS PAK MOLEX 20P SHROUDED MOLEX 8 PIN LATCHED MOLEX 8 PI
21. 4 14016 E2 ES141 D5 F6117 E2 ES241 05 1712857 E2 ES282 E6 02640 D1 C184C 1 184 1 184 1 30010 1 30010 2 1 30010 1 30010 1 30024 1 30024 1 30024 1 30024 1 10120 1 10390 1 30047 A1 30047 1 30047 1 30047 1 30047 1 30010 1 10680 1 11000 1 15600 1 10330 1 30010 1 15600 A1 15600 Al 15600 E A1 15600 1 15600 A1 15600 1 300101 1 30010 1 300103 A1 15600 1 300103 1 15600 1 15600 1 30010 1 30010 1 30010 1 156007 1 15600 1 156007 1 11000 DN780 MICRO PROCESSOR BOARD REF ITEM VALUE QTY KTR NO R42 5 RESISTOR 100R 1 10100 R43 5 RESISTOR 3K3 1 1 13300 R44 5 RESISTOR 1K 1 1 11000 ST1 15WAY DEE SOC RT PCB 15WAT DEE SOC RT PCB L E2 BS152 ST2 MOLEX 6 PIN STRAIGHT 0 156 6PIN STRAIT 1 E2 BP064 ST3 MOLEX 8 PIN LATCHED 0 1 8 LATCHED 1 E2 BP082 5 4 16 WAY PIN HEADER VERTICAL LOCK TYPE l E2 CP164 ST5 16 WAY PIN HEADER VERTICAL LOCK TYPE 1 2 164 ST6 MOLEX 34P SHROUDED 2X17PIN SHROUDED SET l E2 BP341 ST7 MOLEX 20P SHROUDED 2X10PIN SHROUDED SET 1 2 203 STs MOLEX 2 PIN LATCHED 0 1 2PIN LATCHED l 2 21 ST8A MOLEX 2 WAY PLUG 2W X 0 1 JUMP PLUG l E2 BSO2A 5 9 MOLEX 3 PIN 0 1 3 PIN SET LATCH 1 E2 BP031 ST9A MOLEX 2 WAY PLUG 2W X 0 1 JUMP PLUG 1 2 502 5 10 MOLEX 2 LATCHED 0 1 2 LATCHED
22. 7 245 D3 7A074 D3 7F004 D3 7A377 D3 7A373 3 7 004 3 7 010 D3 7A138 D5 Z80AM D3 T7705 D3 7A074 D3 7A003 D5 M8279 D3 7A138 MICRO PROCESSOR BOARD TTL STD TTL IC STD CMOS IC 14 PIN DIL SOCKET 2K X 8 CMOS SRAM 24 PIN DIL SOCKET 16K X 8 EPROM IC 28PIN LOCK IC SOCKET PCB 2640 TRANSISTOR TRANSISTOR TRANSISTOR 5 RESISTOR 55 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 4016 14 PIN DIL SOCKET 6117LP 24 PIN DIL SOCKET 27128 28PIN DN780 BC184 BC184 BC184 10K 10K 10K 10K 24K 24K 24K 24K 120R 390R 47K 47K 47K 47K 47K 680R 1K 5K6 330R 10K 5K6 5K6 5K6 5K6 5K6 5K6 10 10K 10K 5K6 10K 5K6 5K6 10K 10K 5K6 5K6 5K6 19 LOCK IC SOCKET MICRO BRD OR EQUIV OR EQUIV OR EQUIV PREP a EB EB EH IS ES BBB ES S EA ES EA S FA IS A EP RP i FA EA F2 I EA 2 B i iB I B IS IB S I E i BS E QTY KTR NO D3 70016 D3 70016 D
23. C46 CAP POLYSTYRENE 2 5 1N8 1 B3 11800 CAPACITOR CERAMIC CAP TANTALUM RADIAL CAP TANTALUM RADIAL CAP TANTALUM RADIAL DIODE DIODE ZENNER DIODE TTL IC LS TIL IC LS TTL 10 15 TTL IC LS S A R 8BIT LS 16 PIN DIL SOCKET S A R 8BIT LS 16 PIN DIL SOCKET D A CONVERTOR IC 24 PIN DIL SOCKET D A CONVERTOR IC 24 PIN DIL SOCKET TTL is 32 X 8 PROM Ic 16 PIN DIL SOCKET TTL Ls TTL IC LS TTL IC LS COMPARITOR IC 8 PIN DIL SOCKET CMOS SWITCH QUAD 16 PIN DIL SOCKET LINEAR IC SINGLE 8 PIN DIL SOCKET CMOS SWITCH QUAD 16 PIN DIL SOCKET LINEAR IC DUAL 8 PIN DIL SOCKET LINEAR IC DUAL 8 PIN DIL SOCKET FILTER HYBRID L PASS FILTER HYBRID L PASS FILTER HYBRID L PASS 72P TYPE PRESET 72P TYPE PRESET PCB 2639 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5V1 400mw 7415373 7415373 7415374 7418374 25L03 16 PIN DIL SOCKET 25L03 16 PIN DIL SOCKET PCM53I 24 PIN DIL SOCKET PCM 53V 24 PIN DIL SOCKET 7415393 7603 16 PIN DIL SOCKET 74LS377 74LSOO 74LSO4 LM311 8 PIN DIL SOCKET DG211 l6 PIN DIL SOCKET TLO71 8 PIN DIL SOCKET DG211 16 PIN DIL SOCKET TLO72 8 PIN DIL SOCKET NE5532 8 PIN DIL SOCKET KTROO9 KTROO9 KTROO9 72P 1 72P 50K DN780 CONVERTOR 47R LOR 8K2 10K 1K5 4K7 1208 5 1 6805 5K6 21 E QTY KTR NO B2 2A047 4 12 4
24. CAPACITOR CERAMIC 47N C54 CAPACITOR CERAMIC 47N C56 CAPACITOR CERAMIC 47 C57 CAPACITOR CERAMIC 15P C58 CAP POLYSTYRENE 2 58 220PF c59 CAPACITOR CERAMIC 47P c60 CAP POLYSTYRENE 2 5 100 D1 RED LED 3mm ROUND GL 3AR2 D2 DIODE 1N4148 D3 RED LED 3mm ROUND GL 3AR2 Icl 1K 4 SRAM 2148 Icls 18 PIN DIL SOCKET IC2 1 4 SRAM 2148 IC2S 18 PIN DIL SOCKET IC3 1 4 SRAM 2148 IC3S 18 PIN DIL SOCKET 18 PIN DIL IC4 1 4 SRAM 2148 15 LH HM HH IH HH H H FH I H l mp HR i EI FAE I PII pB Printed 09 09 85 8 B2 2A047 B4 TB147B B2 2A047 2 2 047 2 2 047 B2 2A0478 B2 2A047 2 2 047 2 2 047 2 2 0478 4 222 2 2 0478 2 2 047 2 2 0478 2 2 047 2 2 0478 2 2 047 2 2 047 10120 2 2 0478 4 122 4 1226 4 122 4 1226 4 122 4 12 B4 TB122 4 122 2 2 047 2 2 047 2 2 047 2 2 047 2 2 047 2 2 047 2 2 047 2 2 047 2 2 047 2 1001 B3 10220 2 10047 2 B3 10100 D1 AL209E D1 A4148 D1 AL20 D5 F2148 2 518 D5 F2148 E2 ES181E D5 F2148 2 518 05 2148 IC10 115 12 125 IC13 IC13S 1 14 145 IGIS IC15S 1 16 165 IC17 IC17S 1 18 IC18S IC19 1 195 IC20 IC20S IC21 IC21S 22 225 IC23 IC23S IC24 IC24S 1 25 1255 1 26 1268 275 IC28 IC29
25. ENTRY PUSH SWITCH ANTHRACITE 4 1 E1 BG120 585 MOMENTRY PUSH SWITCH ANTHRACITE 5 1 1 1 121 SW6 MOMENTRY PUSH SWITCH ANTHRACITE 6 l 1 122 507 MOMENTRY PUSH SWITCH ANTHRACITE 3 1 1 1 119 MOMENTRY PUSH SWITCH ANTHRACITE 2 1 El BGl118 59 MOMENTRY PUSH SWITCH ANTHRACITE 1 1 1 117 5910 MOMENTRY PUSH SWITCH DARK GREY SEQ 1 1 80129 m MOMENTRY PUSH SWITCH ANTHRACITE O 1 1 116 5812 MOMENTRY PUSH SWITCH DARK GREY STO 1 1 128 SW13 MOMENTRY PUSH SWITCH ANTHRACITE 1 1 114 SW14 MOMENTRY PUSH SWITCH ANTHRACITE 1 1 8 115 5815 MOMENTRY PUSH SWITCH DARK GREY MARQUART 1 1 113 5016 MOMENTRY PUSH SWITCH DARK GREY MARQUART 1 1 113 E SW17 MOMENTRY PUSH SWITCH DARK GREY MARQUART 1 E1 BG113 SW18 MOMENTRY PUSH SWITCH DARK GREY MARQUART 1 1 86113 5819 PUSH SWITCH DARK GREY MARQUART 1 E1 BG113 5820 MOMENTRY PUSH SWITCH DARK GREY MARQUART 1 1 8 113 5821 MOMENTRY PUSH SWITCH DARK GREY MARQUART 1 E1 BG113 La 5822 MOMENTRY PUSH SWITCH DARK GREY REV 1 1 E1 BG127 SW23 MOMENTRY PUSH SWITCH DARK GREY IN l E1 BG126 i DN780 AUDIO IN OUT BOARD C2 CAPACITOR PLASTIC 5 IN 1 1 11000 C3 CAPACITOR PLASTIC 5 1N 1 1 11000 c4 CAPACITOR CERAMIC 15P 1 2 10015 C5 CAPACITOR CERAMIC 82PF l B2 10082 C8 CAP ELECTROLYTIC RAD 470 16V 1 4 08347 c9 CAP ELECTROLYTIC RAD 470 16V 1 B4 DB347 C12 CAP ELECTROLYTIC
26. LATCHING PUSH SWITCH SLIDE SWITCH C amp K SLIDE SWITCH C amp K MAINS TRANSFORMER SCREW SCREW SCREW M5 X 45 POZI PAN SHAKEPROOF WASHER SHAKEPROOF WASHER MUDGUARD WASHER NUTS M5 NUTS BZP PILLAR 14MM TYRAPS MOUNTING KITS OPEN PCB MOUNT OPEN PCB MOUNT OPEN PCB MOUNT 500mA TIME DELAY 500mA TIME DELAY 5A TIME DELAY 1 0A TIME DELAY TV5 TVS TV6 TV5 78M15 15V TO220 78M15 15V TO220 78 05 5V TO220 78H05 5V 5A TO3 ZERO OHM LINK DN780 PSU BRD 470R 100R 0 156 6PIN STRAIT 0 156 6PIN STRAIT 0 156 6PIN STRAIT 0 1 X 6PIN SET LATCH 0 2 2PIN LATCHED TO3 SOCKET WITH FUSE HOLDER ALPS MAINS TYPE 2P2W PCB 2P2W PCB TORODIAL DN70 M3 X 10 P HD C P M3 X 6 P HD BZP M3 X 12 P HD C P M5 X 45 BZP M3 BZP M5 SHAKEPROOF M5 1 DIA M3 BZP M5 NUTS M3 THREAD TAPPED SMALL TYRAPS TO3 SILICONE WASHERS 26 P2 QJ F I Ul F F2 QV I2 PP RRP P RP IS EB EB ES IS RRP PB ES PP RS IS IS S S S ED S IS I N IA IS EB B EB iS RS E IS D1 A4002 D1 A4002 D1 APOO6 D1 A4002 D1 A4002 E3 A0100 0100 0100 500 500 0005 E3 BAO10 8 5 E8 HOTV5 E8 HOTV6 E8 HOTV5 D2 78M15 D2 78M15 2 78 05 D2 78H05 0001 E6 02642 1 10470 1 10100 E2 BPO64 E2 BP064 E2 BP064 E2 BPO61 2 21 E2 ESO31 2 05033 1 211 1 0221 E1 CD221 E5 TMOO2 F1 GB102 F1 GBO62 F1 GB122 F1 GD452 F1 DBO32 1 00052
27. M4 CAD PASS M4 THREAD TAPPED SMALL TYRAPS DN780 CHASSIS DN780 COVERS DN780 REAR PANEL DN780 HINGE l6WAY SOC STD RIBBON 16 SOC STD RIBBON 20WAY IDC RIB SOCKET 0 156 6 IDC SKT 34 WAY IDC CONNECTOR 8 WAY 0 1 TYPE 0 156 6 IDC SKT 6 WAY 0 156 TYPE 6 WAY 0 1 TYPE 8 WAY 0 1 TYPE 0 1 6 IDC SOCKET 27 t QTY KTR NO E tO Borm gt OO O0 fto 0 0 D IS BW FO I rm Re 2 2 047 4 E4 B9004 1 101 Fl FBO61 F1 PB122E F1 DB032 1 4 1 002 F1 AB202E 4 55 7 7801 E5 FOOO1 EB FOO001E 4 2003 2 5021 2 5011 1 102 E F1 GB102 1 08062 8 1 0 061 F1 FB061 F1 FB101 1 039 F1 DB032 1 042 F1 AB002 1 002 4 4 35 Hl CAO001 ft EB A0015 8 0015 amp E7 R7801 E8 C0009 2 161 2 161 2 201 2 5064 2 341 2 65081 E2 CS064 2 65062 2 05061 2 05081 E2 CS063 LN DN780 DN780 ZP2 RED LED 3mm ROUND RED LED 3mm ROUND RED LED 3mm ROUND RED LED 3mm ROUND PRE CUT WIRE PCB 2643 TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR ZERO OHM LINK 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 5 RESISTOR 15 WAY DEE SOCKET 15 WAY DEE CO
28. N LATCHED MOLEX 3 PIN MOLEX 2 PIN LATCHED MOLEX 2 WAY PLUG DISPLAY BOARD CAP TANTALUM RADIAL CAP ELECTROLYTIC RAD CAPACITOR CERAMIC CAPACITOR CERAMIC CAP TANTALUM RADIAL CAP TANTALUM RADIAL CAP ELECTROLYTIC RAD RED LED SHOUDED RED LED SHOUDED RED LED SHOUDED RED LED SHOUDED GREEN LED SHOUDED GREEN LED SHOUDED GREEN LED SHOUDED GREEN LED SHOUDED GREEN LED SHOUDED 68K0 68K0 5 ISOLATED 47R 5 ISOLATED 47R 5 ISOLATED 47R 2X10PIN SHROUDED SET 0 1 8PIN LATCHED 0 1 8 LATCHED 0 1 3 PIN SET LATCH 0 1 2PIN LATCHED 2W X 0 1 JUMP PLUG 15 16V 10 16V 47N 47N 2 2 16V 2 2 16 10 16V RED LED SHOUDED RED LED SHOUDED RED LED SHOUDED RED LED SHOUDED GREEN LED SHOUDED GREEN LED SHOUDED GREEN LED SHOUDED GREEN LED SHOUDED GREEN LED SHOUDED 22 Foe or eom e eS p b pem e p m 1 15600 1 12200 1 30220 1 30220 1 12200 2 10255 2 10255 2 10309 2 10309 2 10255 2 10255 1 15600 1 13900 1 15600 1 13900 2 10309 2 10255 2 10255 1 15600 1 15600 1 30010 1 30047 1 30100 1 30220 1 30068 1 30068 A3 C5047 A3 C5047 A3 C5047 E2 BP203 2 2 E2 BP082 2 2 21 2 8502 B4 TB215 B4 DB210 B2 2A047 B2 2A047 4 122 4 122 B4 DB210 D1 A5530 1 5530 1 5530 1 5530 D1 AQY90 Dl AQY90 D1 AQY90 D1 AQY90
29. VER MOMENTRY PUSH SWITCH MOMENTRY PUSH SWITCH ALPS FADER 60MM ALPS FADER 60MM ALPS FADER 60MM ALPS FADER 60MM TYRAPS REMOTE MAIN ASSEMBLY FADER KNOB DN780 SCREW SHAKEPROOF WASHER WASHER NUTS NYLON SPACER HEYCO CABLE RESTRIAN PUSH ON RUBBER FEET DN780 REMOTE BASE DN780 REMOTE FACE PL PACKING KIT FUSE FUSE FUSE SCREW MAINS PLUG LEAD DN780 EPS PACK 533 X 383 X 195MM GL 3AR2 BLUE 7 0 2 60MM DN780 REMOTE 184 OR EQUIV BC184 OR EQUIV BC184 OR EQUIV BC184 OR EQUIV BC184 OR EQUIV ZERO OHM LINK 10K 10K 330R 330R 10K 330R 10K 330R 10K 330R 10K SOLDER TYPE CT15 DARK GREY MARQUART DARK GREY MARQUART 10KB 60MM DN780 10 60MM DN780 10 60MM DN780 10KB 60MM DN780 SMALL TYRAPS FADER KNOB M3 X 6 RSD CSK CHROM M3 BZP NYLON WASHER M3 BZP 6 6 M3 CLR SPACER RUBBER FEET 500mA TIME DELAY 5A TIME DELAY 1 0A TIME DELAY M4 X 6 P HD CHROME MAINS LEAD IEC FREE EPS PACK DN780 BOX 28 OTY KTR NO LA FB pP IP pH FH p HI pPiIEHwt P ip HEIIpm TP AE A DR DD D1 AL209 D1 AL209 D1 AL209 D1 AL209 D1 AL209 G3 BIBEl E6 02643 D1 C184C D1 C184C 1 184 1 184 1 184 0001 1 30010 A1 30010 A1 10330 A1 30010 A1 10330 1 30010 A1 10330 A1 30010 A1 10330 A1 30010 A1 10330 A1 30010 E2 CP152 E2 CC151 1 80113 1 113 100 A3 MF100 A3 MF100 A3 MF100
30. ator which performs all the mathematical functions in double precision 32bit It also contains the bulk storage memory 64k 16 high speed scratch pad 1k 16 memory and a high speed microcode controller which is under the direct control of the microprocessor The board receives the converted audio signal 16bit linear and sends the computed results to the convertor board 5 CONVERTOR BOARD This board converts the audio signal into a 16bit linear 2 s complement code which it sends to the D S P Board It also receives both processed output digital codes from the D S P Board and converts them into analogue audio outputs The input and output anti aliasing filters on this board are proprietary thick film hybrids which ensure long term stability and performance 6 AUDIO IN OUT BOARD This board contains the differential input amplifier transformer balanced is optional which is both current and voltage balanced also the output amplifiers and output transformers which are fitted as standard The most efficient method of servicing the DN780 due to the complexity of the circuit is on a circuit board exchange basis A service kit is available which includes the major circuit boards plus test links plugs to facilitate fault finding The following fault chart used in conjunction with the circuit diagrams and diagnostic routines should enable most faults to be easily located and cured The following test equipment is essential befor
31. cuitry CHECK PROCEDURE Is the signal OK when using Program 31 DELAY LINE If yes the fault lies on the D S P Board Replace it Remove Convertor Board to D S P Board ribbon cable CB3 Reconfigure ST4 links on Convertor Board to Test position see figure 1 If a spare link is not available use link at ST8 on Micro Board If the signal is now OK the fault lies on the D S P Board Remove cable on ST6 of Audio In Out Board Use Test Link Plug 1 on ST6 or connect pins 1 3 and 8 together If the signal is now OK the fault lies on the Convertor Board Remove cable on ST5 of Audio In Out Board Connect pins 1 and 2 on ST5 together If the signal is now OK the fault lies in the audio section of the Front Display Board otherwise the fault lies on the Audio In Out Board Note Before attempting to use the unit normally the link at ST8 on the Micro Board must be replaced and ST4 on the Convertor Board should be linked in the Normal position ERROR 1 When the unit is first powered up it attempts to check every location in its program memory IC22 EPROM If it fails it will attempt to display Err 1 The causes of error l are a The mains supply is insufficient b One or more of the processor s address lines are being corrupted or more of the processor s data lines are being corrupted i d The EPROM IC22 is faulty Confirm that the mains supply is stable and within the limits of the voltage setting Re
32. e commencing 1 AC DC multimeter or D V M 2 11 5 20MHz minimum bandwidth 3 Oscillator lkHz 4 High impedance Audio levelmeter Note 1 The Micro Board and the Convertor Board require extensive test equipment to repair faults and absolutely no repairs or replacements should be attempted on the D S P Board apart from the replacement of IC s 47 48 53 and 54 explained in the service fault finding list Note 2 OdBu 0 775 Vrms CONTENTS Fault Finding l No Audio amp No Display 2 No Display amp Audio works 3 No Audio amp Display works 4 Distorted Noisy Intermittent Audio 5 ERR 1 6 ERR 2 7 ERR 3 8 Memory loss bAt Lo 9 Display incorrect 10 Headroom Indicator ll Faulty Remote 12 Intermittent Operation Alignment NOTE 13 Level setting guide 14 CMRR adjustment 15 Noise level adjustment 16 Grounding conditions 17 Diagnostic routines Before commencing any fault finding check that all internal cable connectors are firmly located and that all plug in integrated circuits are firmly in their sockets FAULT FINDING NO DISPLAY NO AUDIO Most likely cause a Power supply failure b D C Voltages incorrect c Faulty Microprocessor Board CHECK PROCEDURE Is the fan running if YES goto 1 04 Check mains fuse and mains supply Note Mains fuse and spare are located in the mains inlet socket the outer most fuse is the spare Check voltage selector switches internal C
33. efore pressing key If all segments appear OK the fault probably lies in the CMOS memory IC 21 on Micro Board To flush the CMOS memory switch unit off and while holding down both keys switch unit on when the unit displays bAt Lo release both keys Note flushing the CMOS memory erases all user memories and resets all status to their default conditions If the display is still incorrect replace Micro Board If on replacing the Micro Board the unit is still not correct replace the Front Display Board D imnnnmnnmnnmnh 10 00 10 01 10 02 11 00 11 01 11 02 12 00 12 01 INCORRECT HEADROOM INDICATOR Most likely cause a Faulty component on Front Display Board CHECK PROCEDURE If the entire column is inoperative and the audio works the fault lies in the level meter section on the Front Display Board The OdB LED red appears incorrect Note this LED shows mathematical overload which can occur on some program settings when the peak signal level is lower than OdB on the level meter The correct operation of the overload LED can be confirmed by running program 31 DELAY LINE with a 1lkHz sinewave input signal The overload LED should come on approximately 2 5 dB s below the output clipping point At this point the O L LED 01 on the D S P Board should also be on The reference level of the Level Meter can be adjusted by preset P2 on the Front Display Board Use the level setting guide 13
34. eset Pl on Audio In Out Board for minimum level 15 00 NOISE LEVEL ADJUSTMENT Note This does not apply to Issue 1 amp 2 Convertor Boards 15 01 Set program 3l DELAY LINE delay at zero and remove input signal 15 02 Monitor test point on Convertor Board using an oscillo scope with time base set to 20uS per div Adjust preset P2 for a display like figure 3 b This should be done with the D S P Board in its normal position sv 4 TURN PRESET lt CLOCKWISE 8 vi CORRECT WAVEFORM 1 1 1 TM ov v c TURN PRESET 1 ANTI CLOCKWMSE figure 3 us 15 03 Monitor noise level at output preset P2 may be adjusted approx 4 1 4 of a turn to achieve minimal noise level 12 tom icm all 16 00 16 01 16 02 17 00 GROUNDING CONDITIONS The chassis should ALWAYS be connected to the mains supply earth It is hazardous to operate the unit without this connection Factory set units have audio grounds set as follows a All XLR shells are connected to the chassis b Pin 1 of all three XLR s are connected to the chassis via a blue wire link 11 to the Audio I O Board This link may be removed c Circuit ground is connected to the chassis via a green wire link L2 to the Audio I O Board This link may be removed This allows any combination of signal grounding to be configured DIAGNOSTIC UTILITIES USING THE DIAGNOSTICS Press 191
35. heck following D C voltages on Power Supply Board P S B 5v 4 8v 5 2v FIV 4 OOM 17 54 15v 14 8v 15 2v 15v 14 8v 15 2v If these are incorrect goto 1 06 If they are all correct check D C voltages on all circuit boards If these are all correct replace the Microprocessor board Note If all D C voltages are correct and the fan is still not running then the fan is faulty This will cause overheating of the power supply Remove all internal power cables ST1 ST2 ST3 ST4 from Power Supply Board P S B and re check the D C voltages as in 1 04 If these are correct goto 1 08 Replace relevant fuse s if necessary If the D C voltages are still incorrect the fault lies on the Power Supply Board likely faults are Regulators Diode bridge diodes Transformer Disconnect the remote Disconnect the Micro Board to Convertor Board cable CBl Replace cable to ST3 Check 5v supply on 5 8 If this is not correct the fault lies on the Micro Board Replace cable to 5 1 on P S B Check 5v and 7v supplies on P S B If these are not correct fault lies on Front Display Board Replace Remote cable Check 5v supply on P S B If this is not correct the fault lies in the Remote unit Replace cable to ST2 on P S B Check 5v supply on 5 8 If this is incorrect then the fault lies on the D S P Board The unit should now be displaying a normal Program Replace the Micro Board to Convertor Board cable 1 Chec
36. k the 5v supply If this is incorrect the fault lies on the Convertor Board Reconnect cable to ST4 on P S B If the unit fails the fault lies on the Convertor Board NO DISPLAY AND AUDIO OK Most likely cause a Incorrect power on Display Board b Faulty Microprocessor Board c Faulty Display Board CHECK PROCEDURE Check 5v and 7v supplies to Front Display Board If these are correct go to 2 03 Remove cable to 5 1 on Power Supply Board Check 5v and 7v supplies on P S B If these are correct the fault lies on the Front Display Board otherwise the fault lies on the Power Supply Board Check Micro Board to Front Display Board ribbon cable CB2 If this appears OK try selecting another program i e 31 DELAY LINE If this does not appear to load correctly the fault most likely lies on the Micro Board otherwise try the Front Display Board NO AUDIO AND DISPLAY OK Most likely cause a Incorrect power to Audio Section b Faulty component on audio circuitry c Faulty Convertor Board d Faulty Display Board CHECK PROCEDURE Inject a lkHz sinewave at normal operating level Check 15 and 15v supplies on Power Supply Board If these correct goto 3 06 Remove Audio In Out Board to Convertor Board cable at ST6 on Audio I O Board Check 15 and 15v supplies If these are correct the fault lies on the Convertor Board Remove Audio In Out Board to Front Board Cable at ST5 on Audio I O Board Check 15v and 15v su
37. move both Micro Board to D S P Board ribbon cables CB4 CB5 Restart unit if error 1 is still displayed then fault lies on Micro Board If error 2 then fault lies on D S P Board 6 00 ERROR 2 6 01 After the unit confirms it can read its program memory correctly it then writes a standard reverberation program to the D S P Board IC s 47 48 and then verifies that they are correct if not a Err 2 is displayed The causes of Err 2 are a Either 1 47 or IC48 are faulty b There is a fault in one of the Micro to D S P Board cables CB4 CB5 c There is a major fault on the D S P Board 6 02 Press key If Err 3 is displayed fault lies on the D S P Board Ribbon cables CB4 CB5 or on power cable to the D S P Board 6 03 If a program appears to load then the fault is most likely on the D S P Board and probably located in IC s 47 48 This can be confirmed by swapping IC 47 with 53 and IC 48 with 54 Use extreme care these IC s are static sensitive If on restart the unit stops at Err 3 the faulty IC s are now located at 53 54 Replace IC s or Replace D S P Board 7 00 ERROR 3 7 01 After the unit confirms it has written a program to the D S P Board it then writes a standard set of coefficients to the D S P Board IC s 53 54 and then verifies that they are correct if not a Err 3 is displayed The causes of Err 3 are a Either IC53 or IC54 are faulty b There is a major fault on the D S P Board 7 02 The fault is m
38. ost likely on the D S P Board and probably located in IC s 53 54 This can be confirmed by swapping IC 47 with 53 and IC 48 with 54 Use extreme care these IC s are static sensitive If on restart the unit stops at Err 2 the faulty IC s are now located at 47 48 replace IC s or replace D S P Board If Err 3 still appears replace D S P Board 8 00 8 01 BAT LO and MEMORY LOSS After the unit has confirmed that it can read and write to the D S P Board it reads a check byte in the CMOS memory IC21 on the Micro Board If this is correct the unit will load the last used program and continue to function normally If the check byte is incorrect the unit assumes that the CMOS memory has been corrupted it then displays Lo clears all user memories resets all status s to their default conditions re writes the check byte and loads program 01 Note it is possible to simulate this condition by holding down both the keys during power on Run diagnostic option 09 this will completely check the operation of the CMOS memory If an error is displayed the fault lies in IC21 or on the Micro Board itself If it passes the above test switch unit off and measure voltage across battery if less than 2 5v replace it otherwise the fault lies on the Micro Board Note other possible causes are noisy mains supply and bad mains earth connection DISPLAY INCORRECT Run diagnostic option Ol Check all display segments are on b
39. pplies If these are correct the fault lies on the Front Display Board Remove cable to ST4 on Power Supply Board Check 15v and 15v supplies on P S B If these are correct the fault lies on the Audio In Out Board otherwise the fault is in the Power supply section Is the Headroom indicator working If yes goto 3 08 Trace signal from input socket on Audio In Out Board through to Headroom Indicator section on Front Display Board Trace signal from LEVEL CONTROL Pl on Front Display Board through to Pinl SKT2 on Convertor Board Check signal at pins 3 and 8 on ST2 on Convertor Board use program 3l DELAY LINE If these are correct the fault lies on the Audio In Out Board Remove Convertor Board to D S P Board ribbon cable CB3 Reconfigure ST4 links on Convertor Board to Test position see figure 1 If a spare link is not available use link at ST8 on Micro Board If the signal now appears on the outputs the fault lies on the D S P Board otherwise the fault is on the Convertor Board Note Before attempting to use the unit normally the link at ST8 on the Micro Board must be replaced and ST4 on the Convertor Board should be linked in the Normal position NORMAL POSITION TEST POSITION ST4 514 TEST TEST NORM LJ NORM figure 1 DISTORTED NOISY INTERMITTENT AUDIO Most likely cause a Faulty D S P Board b Faulty Convertor Board c Faulty component on audio cir
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