Sega Genesis II Service Manual
Contents
1. Pin No ao voo 68000 Interface Signals Function Name vo Function Y s4 Aus 55 MORMON SOUND nr Pin Set To Open Cer e fee emm VIDEO PSG n 1 0 22 Pin un Name Fm Function No I O 280 Address Bus Es ws oo mere 15 I O Joy Pad Interface I O 68000 Data Bus IKE zv o vz 1 0 Use This Pin Set To Open Certainly EN vss jem 68000 Address Bus Name vol Function 80 VDD El Power Supply El TESTO Test Signal Set To 0 Certainly TEST Test Signals These Pins Set To All Open I O Z80 Address Bus 23 Pin No 160 he van 166 vas vas 169 vae VA23 SOUND avDD PSG ANLONG O VIDEO PSG SOUNDAVSS vs op O 280 Interface Signals BR BG 1 68000 Interface Signals mu 0 1 or Z80 Interface Signals E I O 68000 Interface Signals Interface RASO PSRAMInerfce2. SH 0 unction Code Output 2 unction Code Output 0 dress Bus ddress Bus 3 dress Bus 4 eh dress Bus 6 dress Bus 7 ddress Bus 9 gt id gt Address Bus 14 IC11 MB3514PF G BND EF IC CXA1145M T6 IC RA2195D IC12 IC UPC7805HF IC 78055 Parts No 313 5232 A Parts No 313 5213 A Parts No 313 5236 A Parts No 313 5214 Parts No 313 5230 Outside View Outside View IN GND OUT Equivalent Block Diagram L a 2 YIN Li or REF 5 Y gt 4 1 R Y Modulator Pulse Generator 3 z a o 8 2 2 e e 85 58 lt 23 T tmi Ve 8 EXPLODED VIEVV 8 PARTS LIST 8 1 EXPLODED VIEVV 201 202 203 1 610 5479 610 5480 253 6592 837 9602 5 837 9602 837 9602 5 837 9603 253 6298 253 6504 253 6599 253 6598 670 0248 670 3128 670 3129 670 3130 601 6973 601 6974 012 P00308 012 0 012 P00316 0B 8 2 MECHANICAL PARTS LIST 1 ASSY TOP CASE GENESIS2 USA ASSY TOP CASE MD2 EUR CASE MD2 IC BD MD2 VAOS USA
3. ote NS dau a Ja d d Ta ER Da ofato PC BD MD2 PAL silia 4 a 6 4 MAIN CIRCUIT BOARD Bottom View MEGA DRIVE ere paf E 47 FEIN i VEIT AHN aV efto GRAOS amp Parts No 315 0685 Parts No 315 0686 A RES W Outside View lt v 3 3 3 3 9 CTT _O arse rp AS LUUUUUUUUUUUUUUUUTU u gt Data Strobe Read Write Interrupt Priority Level 1 Address Bus 13 O Data Bus 13 t BE 16 o Address Bus 16 221 0 Address Bus 17 23 0 Address Bus 19 I e 2 O 7 ata Transfer Acknowledge us Grant Acknowledge us Request Address Bus 20 24 A Address Bue 21 CE 1 0 Data bus 15 D Data bus 8 10 O Daws As 0 TDS ra 5 el 28 Ella 5 86 8 gt Valid Memory Address a
4. TOS 204 ET 7 292 1956 21 243 5 DISK 790 201 591 4 N me 286 13222 m 4 15 oT DE 23 23 oF ROM 715 ART 769 tH TIME veg ARE IM SE ee 48 15 22 20 ASEL Nu 5 CAS 669 case 1 Caso 4 NOE UNB ole 2 8 1 i 255 ull a i De 50 l J N 4 a 24 mam CAP ARAY 16 HS601 5 0 0 alo 0 D he a 7 4 7KO0HM 8 iii EE Es 2 1 HHH i s ZV x r lo 7 7 Wy 0 55558840 gt 7 H 5 In lt lt lt 0 III UPD4364CX 15 ON E i i es 5 vert s
5. Function I O 68000 Address Bus 177 178 179 I O 280 Data Bus IC7 8 IC M5M4C264L 12 IC M5M4C264L 15 IC UPD41264V 12 Parts No 315 0515 Parts No 315 0515 15 Parts No 315 0453 IC MB81461 12 IC HM53461ZP 12 54461 12 Parts No 315 0423 Parts No 315 0481 Parts No 315 0525 IC V53C261Z10 IC RM424C64Z 10 IC 5 51 262 10 Parts No 315 0616 Parts No 315 0622 Parts No 315 0623 424 647 12 Parts No 315 5543 Outside View Pin Layout smen wew ws t 2 9 3 13 15 99900 El Y 2 2 2 ee WRITE A Wy ENABLE MASK 4 INIOUTPUT A PORT REGISTER ADDRESS INPUT DATA REGISTER 8 ADDRESS SERIAL sio SERIAL POINTER SERIAL DATA SELECTOR 71 LINE ADDRESS STROBE INPUT RAS sio ROW ADDRESS STROBE INPUT CAS WRITE BAR BIT WRITE Vee SV ENABLE INDI INPUT WB WE Vs OV CLOCK OSCILLATOR DATA TRNSFER DT OE OUPUT ENABLE OUTPUT 25 26 IC9 10 IC BA10324AF T1 Parts No 313 5221 A Outside View Pin Layout IC LM324 Parts No 313 5063 A 8 3 ELECTRICAL PARTS LIST Notes NTSC GENESIS
6. PAL RGB MEGA DRIVE Circuit No Parts Description Remarks IC 1 315 0685 A IC HD68HC000CP8 PLCC HITACHI 1 315 0686 A MC68HCOOOFN8 PLCC MOTOROLA 2 315 0547 10 IC HM65256BLFP 10 SOP IC 2 315 0677 A IC 51832 10 SOP TOSHIBA IC 2 315 0759 85A IC TC51832AFL 85 SOP TOSHIBA IC 2 315 0759 10A IC TC51832AFL 10 SOP TOSHIBA 2 315 0760 12A IC LH59P832N 12 SOP SHARP IC 3 315 0547 10A IC HM65256BLFP 10 SOP IC 3 315 0677 A IC TC51832FL 10 SOP TOSHIBA IC 3 315 0759 85A IC TC51832AFL 85 SOP TOSHIBA IC 3 315 0759 10 IC TC51832AFL 10 SOP TOSHIBA 3 315 0760 12A IC LH59P832N 12 SOP SHARP NTSC 4 315 0738 R IC Z84C0006 QFP ZILOG IC 4 315 5676 R IC CUSTOM CHIP UPD9033GB 4 384 PAL RGB IC 4 315 0782 R TMPZ84COOAU 6 QFP TOSHIBA PAL RGB IC 5 315 0546 A UPD4364G 151 SOP 28 IC 5 315 0651 A 8464 80 SOP 28P FUJITSU IC 5 315 0635 A IC MB8464A 10LL SOP FUJITSU IC 5 315 0753 10A IC LC3564PM 10L SOP SANYO IC 5 315 0753 12A IC LC3564PM 12L SOP SANYO 5 315 0754 KM6264BLG 10 SAMSONG 5 315 0755 RM6264BLG 101 SOP SAMSONG 5 315 0766 85 IC LC3664BML 85H SOP SANYO IC 5 315 0766 10 IC LC3664BML 10H SOP SANYO IC 5 315 0773 IC 5864 70LL 6 64 SRAN PAL RGB 315 5660 R IC CUSTOM CHIP FC1004 REV 315 0515 JC M5M4C264L 12 ZIP MITSUBISHI NTS
7. Refresh signal 0 is output when the address that refreshes the dynamic memory is on the low order 7 bits of the address bus The MREQ signal also goes active 0 in this state The address for refreshing is output during refreshing 19 IC5 IC UPD4364G 15L IC 8464 80 IC MB8464A 10LL Parts No 315 0546 A Parts No 315 0651 Parts No 315 0635 A IC LC3564PM 10L LC3564PM 12L IC RM6264BLG 10 Parts No 315 0753 I0A Parts No 315 0753 12 Parts No 315 0754 A IC RM6264BLG 10L LC3664BML 85H IC LC3664BML 10H Parts No 315 0755 A Parts No 315 0766 85 Parts No 315 0766 10 IC CXK5864CM 70LL T6 Parts No 315 0773 A Outside View ll Pin Layout ADDRESS INPUT OE OUTPUT ENABLE DATA INJOUTPUT V lt 5 POWER SUPPLY CHIP ENABLE 1 2 INPUT GND GROUND WRITE ENABLE INPUT NC NO CONNECTION Operation Mode _ x x x Non Select s b 3 Power 2283 High Impedance H n H OwpuDisbie res me mo A 65 536 BIT A ROV 256 x 256 A DECODER MEMORY CELL As VO DATA m 5 20 IC6 IC CUSTOM FC1004 REV Parts No 315 5660 Outside View 208 157 6046 TEST CIRCUIT SECURITY CIRCUIT YM3438 FM SOUND SOURCE 53 104 o 105 21 Description
8. 10 NOT USED 476 2122 J 10 476 2122 J 10 476 2122 J 10 Description RES CHIP 10 OHM 1 10W 5 RES CHIP 150 OHM 1 10W 5 RES CHIP 1kOHM 1 10W 596 RES CHIP 10 OHM 1 10W 596 RES CHIP 150 OHM 1 10W 596 RES CHIP 1kOHM 1 10W 596 RES CHIP 47kOHM 1 10W 596 RES CHIP 51kOHM 1 10W 596 RES CHIP 15kOHM 1 10W 596 RES CHIP 47kOHM 1 10W 596 RES CHIP 51kOHM 1 10W 596 RES CHIP 15kOHM 1 10W 596 RES CHIP 47kOHM 1 10W 596 RES CHIP 47kOHM 1 10W 596 RES CHIP 75 OHM 1 10W 596 RES CHIP 75 OHM 1 10W 596 RES CHIP 4 7kOHM 1 10W 596 RES CHIP 4 7kOHM 1 10W 596 RES CHIP 4 7kOHM 1 10W 596 RES CHIP 4 7kOHM 1 10W 596 RES CHIP 7 5kOHM 1 10W 596 RES CHIP 1 2kOHM 1 10W 596 RES CHIP 12kOHM 1 10W 596 NOT USED RES CHIP 2 2kOHM 1 10W 596 RES CHIP 75 OHM 1 10W 596 RES CHIP 5 6kOHM 1 10W 596 RES CHIP 5 6kOHM 1 10W 596 RES CHIP 5 6kOHM 1 10W 596 RES CHIP 1kOHM 1 10W 596 RES CHIP 24kOHM 1 10W 5 NOT USED RES CHIP 1kOHM 1 10W 5 RES CHIP 10kOHM 1 10W 596 NOT USED RES CHIP 1 2kOHM 1 10W 596 NOT USED RES CHIP 1KOHM 1 10W 596 RES CHIP 330 OHM 1 10W 596 NOT USED RES CHIP 1 2kOHM 1 10W 596 RES CHIP 1 2kOHM 1 10W 596 RES CHIP 1 2kOHM 1 10W 596 Remarks NTSC S NTSC F PAL RGB NTSC SM NTSC S SM NTSC F PAL RGB NTSC S NTSC F PAL RGB NTSC SM NTSC F S PAL RGB NTSC SM PAL RGB NTSC F S 5 5 Circuit No 61 61 62 63 64 65 66 67 68 69 70 71 Parts 476 2103 J 10 476 2472 J 10 47
9. NOT USED 151 0372 151 0354 NOT USED 151 0354 NOT USED NOT USED NOT USED O NOM L WN 151 0363 NOT USED 151 0289 NOT USED 151 0372 NOT USED 151 0305 NOT USED 151 0305 NOT USED 151 0354 151 0372 151 0354 NOT USED 151 0311 151 0305 151 0311 151 0305 151 0312 151 0307 151 0307 151 67 C C C C C C C C C C 151 0308 NOT USED 151 0312 NOT USED 151 0309 NOT USED 151 0354 151 0309 151 0361 Description NOT USED CAP CER CP 33PF 50V CH2125 CAP CER CP 100PF 50V CH2125 NOT USED CAP CER CP 100PF 50V CH2125 NOT USED NOT USED NOT USED CAP CER CHIP 47PF 50V CH2125 NOT USED CAP CER CP 10PF 50V D CH2125 NOT USED CAP CER CP 33PF 50V CH2125 NOT USED CAP CER CP 1000PF 50V RB2125 NOT USED CAP CER CP 1000PF 50V 2125 NOT USED CAP CER CP 100PF 50V CH2125 CAP CER CP 33PF 50V CH2125 CAP CER CP 100PF 50V CH2125 NOT USED CAP CER CP 5600PF 50V KB2125 CAP CER CP 1000PF 50V 2125 CAP CER CP 5600PF 50V KB2125 CAP CER CP 1000PF 50V 2125 CAP CER CP 0 01UF 50V 2125 CAP CER CP 0 022UF 50V ZF2125 CAP CER CP 0 022UF 50V ZF2125 CAP CER CP 0 022UF 50V ZF2125 CAP CER CP 18PF 50V CH2125 NOT USED CAP CER CP 0 01UF 50V RB2125 NOT USED CAP CER CP 180PF 50V CH2125 NOT USED CAP CER CP 100PF 50V CH2125 CAP CER CP 180PF 50V CH2125 CAP CER CP 15PF 50V CH2125 Remarks PAL RGB NTSC PAL RGB
10. 315 5676 R Parts No 315 0782 R Outside View a oy Description Single phase clock input When the clock input is set to DC 1 or 0 level continued the MPU stops and holds that state 2 5 00 07 8 bit bidirectional data bus ms 5 povver 5 power supply 030088329977 1117 Not connected internally m Only Set to open Maskable interrup request signal Interrupts are given by a peripheral LSI When the interrupt enable flipflop IFF is set to by software the interrupt is accepted INT is usually used as the wired OR and a pull up resistor is added externally Non maskable interrupt request signal This interrupt request has priority over the maskable interrupt and does not depend on the state of the interrupt enable flipflop IFF HALT Halt signal 0 is output when the MPU executes a HALT command and is set to the HALT state 13 NMI Memory request signal 0 is output when there is an effective address for memory access on the address bus MRFQ also goes 0 together with the RFSH signal during memory refresh Function Input output request signal 0 output when the address for input output is on the lovv order 8 bits 7 of the address bus when an input or output is given signal is also output together with the MI signal when an interrupt is acknowledged to inform the peripheral LSI that t
11. 320 x 0 05 EXP 6 SGM 4217 POLY BAG 200 x 300 x 0 05 EXP 6 670 0483 GAME CATALOG GEN 670 3264 BUSINESS REPLY MAIL GEN2 USA 670 3265 CROSS SELL POSTER GNE2 USA 670 3284 PARTS ORDER FORM GEN2 USA NOTE ACCESSORY PROVIDED TRE CARTRIDGE 37 For MEGA DRIVE Parts No Symbol No 610 5372 01 610 5376 01 400 5211 400 5208 400 5209 610 5493 610 5473 610 5473 01 610 5473 02 600 6273 672 1209 672 1328 671 3127 02 671 3127 04 671 3127 05 671 3127 06 671 3124 02 671 3124 04 671 3124 05 671 3124 06 SGM 4216 SGM 4217 670 0740 670 3330 670 3331 670 3332 670 3381 670 3327 NOTE Description ASSY CP M5 REV EUR SE CONTROL PAD ASSY CP M5 REV EUR EFA CONTROL PAD ADAPTOR AC240V DC9V 0 85 AC ADAPTOR AC240V DC9V 0 85 ADAPTOR AC230V 50Hz DC10V 0 85A RF UNIT MD2 PAL B RF UNIT MD2 MDU UD3631 RF UNIT MD2 MDQT4E801A RF UNIT MD2 TOWA PAL RGB CABLE MD2 UNION PERITEL CABLE OPERATION MANUAL MD2 MULTI OPERATION MANUAL MD2 KSA BOX amp PACK SET MD2 MULTI 1630 BOX amp PACK SET MD2 MULTI 1685 BOX amp PACK SET MD2 MULTI 1686 BOX amp PACK SET MD2 MULTI 1695 MA CTN MD2 MULTI 1630 MA CTN MD2 MULTI 1685 MA CTN MD2 MULTI 1686 MA CTN MD2 MULTI 1695 POLY BAG 260 x 320 x 0 05 EXP 6 POLY BAG 200 x 300 x 0 05 EXP 6 GAME CATALOG 16 MULTI GUARANTEE CARD SOE MD2 FRG amp ESP GUARANTEE CARD SOE MD2 FRA GUA
12. NTSC PAL RGB NTSC NTSC F S PAL RGB NTSC SM NTSC F S PAL RGB NTSC SM NTSC F S PAL RGB NTSC SM NTSC S NTSC F PAL RGB Circuit No Parts No Description Remarks C 32 NOT USED NOT USED NTSC SM C 33 NOT USED NOT USED C 34 NOT USED NOT USED C 35 151 0265 CAP CER CP 0 1UF 25V ZF2125 C 36 151 0265 CAP CER CP 0 1UF 25V 5 C 37 151 0307 CAP CP 0 022UF 50V ZF2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CER CP 0 022UF 50V 2 2125 151 0307 CER CP 0 022UF 50V ZF2125 151 7 CAP CER CP 0 0220 50 5 151 0307 CER CP 0 022UF 50V ZF2125 151 7 CER CP 0 0220 50V 5 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CER CP 0 022UF 50V ZF2125 151 0307 CAP CER CP 0 022UF 50V 2 2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CER 0 022UF 50V ZF2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 151 0307 CER CP 0 022UF 50V ZF2125 151 0311 CAP CER CP 5600PF 50V 5 O O 4 O O U O O o ooh N NOT USED NOT USED NTSC S SM 151 0354 CAP CER CP 100PF 50V CH2125 NTSC F PAL RGB C C C C C C C C C C C C C C C C C 151 0311 CAP CER CP 5600PF 50V KB2125 151 0307 CAP CER CP 0 022UF 50V ZF2125 NOT USED N
13. RIGHT Els c20 109 18P CH 29 n 7 330 180 H i 0 582 DRIVE I 1 NOT USED I 180P m 76 GENESIS 6 62299 324 7 848 104 4 7K CE10 R45 4 7 9 R44 10u 4 7K 11 6 CIRCUIT BOARD DIAGRAMS 6 1 MAIN CIRCUIT BOARD Top View For GENESIS DIFFERENCE TABLE x NOT MOUNTED Z O MOUNTED 311510 6 NS N SS Im 1 p 0 i i 7 I un 1184 6 2 MAIN CIRCUIT BOARD Bottom View For GENESIS EM 1 TU 45 RS 8 i y d 53 pd 3 3 k Dit at ei 50 6 3 CIRCUIT BOARD Top View For MEGA DRIVE 3 Sere ya 52 ay AANE 5 je ia 8 TZ MAC T T9 nd sa SIHR Z ii 1832 3 8 2 5 pes 4 814 4 gt
14. 0023 150 0023 150 0047 150 0062 150 0062 150 0062 150 0062 150 0062 150 0023 150 0023 150 0023 150 0023 Parts Description EMI FILTER STB101RB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STB271RB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB EMI FILTER STX222MB FILTER 5 271 FILTER STX222MB E 10UF 16 U TYPE L 5MM CAP E 10UF 16 U TYPE 20 CAP E 10UF 16V U TYPE 2096 CAP E 10UF 16V U TYPE 2096 CAP E 10UF 16V U TYPE 2096 CAP E 10UF 16V U TUPE 20 CAP E 10UF 16 U TYPE 20 CAP E 10UF 16V U TYPE 2096 CAP E 10UF 16 U TYPE 20 CAP E 10UF 16V U TYPE 2026 CAP E 10UF 16V U TYPE 20 CAP E 220UF 6 3V U TYPE CAP E 10UF 16 U TYPE 20 CAP E 220UF 6 3V U TYPE CAP E 10UF 16V U TYPE 2026 CAP E 220UF 16V U TYPE CAP E 100UF 10V U TYPE CAP E 47UF 10V U TYPE CAP E 47UF 10V U TYPE CAP E 10UF 16 U TYPE 20 CAP E 10UF 16V U TYPE 20 CAP E 10UF 16V U TYPE 20 CAP E 100UF 10V U TYPE CAP E 47UF 10V U TYPE CAP E 47UF 10V U TYPE CAP E 47UF 10V U TYPE CAP E 47UF 10V U TYPE CAP E 47UF 10V U TYPE CAP E 10UF 16V U TYPE 2026 CAP E 10UF 16V U TYPE 20 CAP E 10UF 16V U TYPE 2026 CAP E 10UF 16V U TYPE 2096 Remarks NTSC S SM NTSC F PAL RGB 31 Circuit No Parts No
15. 10V REGULATOR DATA BUS 8 010 105 i 04364 15 CNS 6 ee aaa CONTROL PAD CONTROL PAD 1 PLAYER 2 PLAYER OPTION 5 SCHEMATIC DIAGRAMS 5 1 SCHEMATIC DIAGRAM 1 io Ye 15 Dels N CANALOG hill 1 me s HS BD Rai RAG 1000HM 22 ml esseese 0 il Ice 4582 Ne m oem PMM PPPPPPP PPPPP Weed 811131 8888588 97 1 SRES 1284 AEE ZELK RES EO WRES ya lt NTSC 463 2 5 2 561 2 cs Griera SLE DES gt 484 5387 22 IBEG TA ADO VOTAR MREG R 251 22 1830 pi VBG 7649 BGAK 1 55 2 182 B pas Sa N T 2454 12 VLDS 1939 pez 2342 25 4 LOS I my ADS 16 UDS 1924 lt 0 Ne 008 1 519 LS 207 ss ma NOE abe as AS VEC Bid as 206 69 33P ve ee 207 381 eet rc 205 89
16. 6 2472 J 10 476 2472 J 10 476 2472 J 10 476 2473 J 10 476 2103 J 10 476 2104 J 10 476 2331 J 10 476 2331 J 10 476 2331 J 10 476 2331 J 10 476 2102 J 10 476 2102 J 10 476 2151 J 10 476 2221 J 10 476 2752 J 10 476 2103 J 10 476 2103 J 10 476 2331 J 10 476 2331 J 10 476 2682 J 10 479 5005 0000 479 5005 0000 477 0136 477 0136 477 0139 477 0136 477 0136 477 0136 477 0132 477 0148 390 5234 510 5019 509 5207 510 5046 212 5364 209 5061 209 5066 212 3 EYLET CN3L 079 000003 EYLET CN3L 079 000005 EYLET CN3R 079 000003 Description RES CHIP 10kOHM 1 10VV 596 RES 4 7 1 10VV 5 RES CHIP 4 7kOHM 1 10W 5 RES CHIP 4 7kOHM 1 10W 596 RES CHIP 4 7kOHM 1 10W 5 RES CHIP 47kOHM 1 10W 596 RES CHIP 10 1 10W 5 RES CHIP 100 1 10W 5 RES CHIP 330 OHM 1 10W 596 RES CHIP 330 OHM 1 10W 596 RES CHIP 330 OHM 1 10W 596 RES CHIP 330 OHM 1 10W 5 RES CHIP 1kOHM 1 10W 596 RES CHIP 1kOHM 1 10W 596 RES CHIP 150 OHM 1 10W 596 RES CHIP 220 OHM 1 10W 596 RES CHIP 7 5kOHM 1 10W 596 RES CHIP 10 1 10W 5 RES CHIP 10 1 10W 5 RES CHIP 330 OHM 1 10W 596 RES CHIP 330 OHM 1 10W 596 RES CHIP 6 8kOHM 1 10W 596 RES CHIP 0 OHM 1 10W 596 RES CHIP 0 OHM 1 10W 596 R PACK CHIP 4 100 OHM 1 16W 596 R PACK CHIP 4 100 OHM 1 16W 596 R PACK CHIP 2 100 OHM 1 16W 596 R PACK CHIP 4 100 OHM 1 16W 5 R PACK CHIP 4 100 O
17. C 315 0515 15 M5M4C264L 15 ZIP MITSUBISHI 315 0453 IC 41264 12 21 315 0423 IC MB81461 12 ZIP FUJITSU 315 0481 IC HM53461ZP 12 21 HITACHI 315 0525 IC TMS4461 12SDL ZIP 315 0616 IC V53C261210 ZIP VITELIC IC 315 0622 IC KM424C64Z 10 ZIP SUMSUNG IC 315 0623 IC MSM51C262 10ZS ZIP OKI IC 315 5543 IC RM424C64Z 12 ZIP SAMSUNG 000505000 IC 8 315 0515 IC M5M4C264L 12 ZIP MITSUBISHI IC 8 315 0515 15 IC M5M4C264L 15 ZIP MITSUBISHI IC 8 315 0453 IC UPD41264V 12 ZIP IC 8 315 0423 IC MB81461 12 ZIP FUJITSU IC 8 315 0481 534612 12 8 315 0525 TMS4461 12SDL ZIP 8 315 0616 V53C261Z10 ZIP VITELIC C8 315 0622 IC KM424C64Z 10 ZIP SUMSUNG 29 Circuit No Parts No Description Remarks IC 8 315 0623 IC MSM51C262 1025 21 IC 8 315 5543 IC 424 642 12 ZIP SAMSUNG LM324 SOP IC BA10324AF T1 SOP ROHM IC 9 IC 9 313 5063 A 313 5221 IC 10 313 5063 LM324 SOP IC 10 313 5221 A IC BA10324AF T1 SOP ROHM 11 313 52132 IC CXA1145M T6 SOP SONY NTSC S 11 313 5232 A IC MB3514PF G BND EF FUJITU NTSC F PAL RGB IC 11 313 5236 IC RA2195D SAMSUNG NTSC SM IC 12 313 5214 IC UPC7805HF NEC IC 12 313 5230 IC TA7805S TOSHIBA OSC 1 230 5053 010 XTA
18. HM 1 16W 5 R PACK CHIP 4 100 OHM 1 16W 5 R PACK CHIP 8 4 7kOHM W COMM R PACK CHIP 4 2 2XOHM W COMM LED GL3PR8 TACTILE PUSH SW SKEVAA TACT SW SKEVAA ALPS PUSH SWITCH JPK0010 Z091 SMK MINI DIN CONN 9P TCS7913 43 EDGE CONNECTOR 64 PSB4D32K 7R D SUB 9P 2 UC0082 21410 0 CONN DC JACK EIAJ3 HEC3100 EYLET 7 EYLET 6 3 5 8 EYLET 3 5 7 Remarks NTSC S SM NTSC F PAL RGB 35 Circuit No EYLET CN3R TS CN5L Parts 079 000005 012 P00308 EYLET CN5L 079 000001 TS 5 012 P00308 EYLET CN5C 079 000001 TS CN5R 012 P00308 EYLET CN5R 079 000001 36 Description Remarks EYLET 6 3 5 8 TAP SCR PH 3 x 8 EYLET 2 317 TAP SCR PH 3 x 8 EYLET 7 TAP SCR PH 3 x 8 EYLET 2 317 8 4 ACCESSORIES PACRAGE LIST 5 5 Symbol No Parts No Description Remarks 610 5571 01 ASSY CP M5 USA CONTROL PAD 400 5135A AC ADAPTOR AC120V DC10V 0 85A 400 5135A 01 ADAPTOR AC120V DC10V 400 5135A 02 AC ADAPTOR AC120V DC10V 0 85A 400 5135A 03 AC ADAPTOR AC120V DC10V 0 85A 610 5472 RF UNIT GEN2 MDU VA3431 610 5472 01 RF UNIT GEN2 07 610 5472 02 RF UNIT GEN2 TOWA NTSC 672 1208 OPERATION MANUAL GEN2 USA 671 3379 01 BOX amp PACK SET GEN2 USA 1630L MK 1630 671 3379 02 BOX amp PACK SET GEN2 USA 1614L MK 1614 671 3373 01 MA CTN GEN2 USA 1630L MK 1630 671 3373 02 MA CTN GEN2 USA 1614L MK 1614 SGM 4216 POLY BAG 260 x
19. IC BD MD2 VAOF USA IC BD MD2 VAOSM USA CBA IC BD MD2 EUR 60P CARD EDGE COVER LID MD2 64P COVER MD2 EXPORT LED LENS MD2 EXPORT SEAL CUSTOMER SERVICE LABEL FCC amp SMITH MK 1630 USA LABEL SER NO MK 1630 USA LABEL SER NO MD2 MULTI RUBBER FOOT MD2 RUBBER FOOT SJ 5012 BLACK TAP SCR 8 TAP SCR PH 3 x 10 TAP SCR PH BLK 3 X 16 Notes NTSC GENESIS II PAL RGB MEGA DRIVE II NTSC 1 PAL RGB NTSC S NTSC F NTSC SM PAL RGB NTSC NTSC NTSC PAL RGB
20. L OSC 53 693175 70200 1 NTSC OSC 1 230 5058 010 OSC 53 203424M 20PPM SYOVVA PAL RGB TR 1 482 0312 XSTR 2504177 CHIP M6 M7 NEC TR 1 482 0313 XSTR 25 4081 CHIP ROHM 482 0312 XSTR 28C4177 CHIP M6 M7 NEC TR 2 482 0313 XSTR 25 4081 CHIP ROHM 481 0149 01 DIODE 182473 RADIAL 481 5038 01 DIODE 1SR 35 100A RADIAL NOT USED NOT USED 180 5060 PEAKING COIL 100UH O3TYPE RA F S PAL RGB k 2 NOT USED NOT USED NTSC SM 180 5059 PEARING COIL 12UH 03TYPE RA NTSC F S PAL RGB L 3 NOT USED NOT USED 5 5 USED USED L 5 NOT USED NOT USED L 6 180 5060 COIL 100UH 03TYPE PAL RGB 270 5065 COMMON FILTER CM04RC04 BEADS INDUCTOR CP BK2125 HS121 BEADS INDUCTOR CP BK2125 HS601 271 0044 271 0043 271 0043 BEADS INDUCTOR CP BR2125 HS601 FB 13 271 0044 BEADS INDUCTOR CP BR2125 HS121 PAL RGB 271 0045 EMI FILTER STB101RB Circuit No 1 2 3 4 5 6 7 8 9 271 0045 271 0007 271 0007 271 0007 271 0007 271 0007 271 0007 271 0007 271 0006 271 0007 271 0007 271 0007 271 0007 271 0007 271 0007 271 0007 271 0006 271 0007 150 0418 150 0023 150 0023 150 0023 150 0023 150 0023 150 0023 150 0023 150 0023 150 0023 150 0023 150 0412 150 0023 150 0412 150 0023 150 0159 150 0047 150 0062 150 0062 150 0023 150
21. OT USED 151 0265 CAP CER CP 0 1UF 25V ZF2125 PAL RGB 151 0336 CAP CER CHIP 12PF 50 CH2125 PAL RGB 151 0401 C PACK CP 33P 16 W COMMON TDK 476 2121 J 10 RES CHIP 120 OHM 1 10W 5 476 2222 J 10 RES CHIP 2 2kOHM 1 10W 596 476 2472 J 10 RES CHIP 4 7kOHM 1 10W 596 476 2222 J 10 RES CHIP 2 2kOHM 1 10W 596 NOT USED NOT USED 476 2122 J 10 RES CHIP 1 2kOHM 1 10W 5 476 2222 J 10 RES CHIP 2 2kOHM 1 10W 596 NOT USED NOT USED 476 2222 J 10 RES CHIP 2 2kOHM 1 10W 596 476 2103 J 10 RES CHIP 10kOHM 1 10W 596 476 2103 J 10 RES CHIP 10kOHM 1 10W 5 476 2103 J 10 RES CHIP 10kOHM 1 10W 596 476 2103 J 10 RES CHIP 10 1 10W 596 2222222222222 33 Circuit No DD D D 30 20 20 20 20 20 20 30 30 30 R R R 2222202 DD 34 Parts No 476 2100 J 10 476 2151 J 10 476 2102 10 476 2100 J 10 476 2151 J 10 476 2102 J 10 476 2473 J 10 476 2513 J 10 476 2153 J 10 476 2473 J 10 476 2513 J 10 476 2153 J 10 476 2473 J 10 476 2473 J 10 476 2750 J 10 476 2750 J 10 476 2472 J 10 476 2472 J 10 476 2472 J 10 476 2472 J 10 476 2752 J 10 476 2122 J 10 476 2123 J 10 NOT USED 476 2222 J 10 476 2750 J 10 476 2562 J 10 476 2562 J 10 476 2562 J 10 476 2102 J 10 476 2243 J 10 NOT USED 476 2102 J 10 476 2103 J 10 NOT USED 476 2122 J 10 NOT USED 476 2102 J 10 476 2331 J
22. RANTEE CARD SOE MD2 GBR GUARANTEE CARD MD2 ITA GUARANTEE CARD OZISOFT MD2 ACCESSORY PROVIDED 38 ESC comoro L r 1685 1686 1695 Remarks AUSTRALIA NEW ZEALAND U K Except U K AUSTRALIA AND NEW ZEALAND NEW ZEALAND Except NEW ZEALAND FRANCE FRANCE SAUDI ARABIA Except SAUDI ARABIA SAUDI ARABIA MK 1630 MK 1685 MK 1686 MK 1695 MK 1630 MK 1685 MK 1686 MK 1695 GERMAN SPAIN FRANCE U K ITALY AUSTRALIA NEW ZEALAND SEGA Sega Enterprises Lid Printed in Japan 1 4 BLOCR DIAGRAM GAME CARTRIDGE PERIPHERAL DEVICE 20 001 2 ee a 1 107 168 041264 I V RAM 64 C1 l 53 203424M DRIVE T I 53 693175 GENESIS ID 2 1 3 SHHZ IC6 IC11 5 6 4 083514 64 CN2 60 mx i RF UNIT CIE 68000CC I Ya 58 RGB ENCODER Se CPU 68000 d isi i I I 1 1 1 I I 1 i ARBITER Lu 170 210 1 2 IC3 I IC4 042832 15 Z800FP 1 I e 1012 DDRESS CONTROL BUS I CPU 780 065 2 I 106 9V OR
23. SEGA SERVICE MANUAL GENESIS MEGA DRIVE II PAL B I G RGB SPECIFICATIONS IDENTIFYING PARTS DISASSEMBLY BLOCK DIAGRAM SCHEMATIC DIAGRAMS CIRCUIT BOARD DIAGRAMS PARTS SPECIFICATIONS EXPLODED VIEW amp PARTS LIST 8 1 EXPLODED VIEW 8 2 MECHANICAL PARTS LIST 8 3 ELECTRICAL PARTS LIST 8 4 ACCESSORIES PACKAGE LIST Sega Enterprises Ltd Before Using This Service Manual This service manual includes data for the GENESIS H and MEGA DRIVE II Parts of the circuits are different in the GENESIS II depending on the model of IC11 RGB encoder used Check the model of IC11 on the main circuit board and identify the type F S or SM IC MB3514PF G BND EF 313 5232 A 1145 6 SOP 313 5213 RA2195D 313 5236 MAIN C B View Differences in the circuits are shown in the difference tables in the schematic and circuit board diagrams n the parts list differences are shown in the REMARKS columns 1 SPECIFICATIONS RATINGS MEGA DRIVE II PAL I PAL B PAL G RGB AC 120V 60Hz AC220V 50Hz AC 240 50Hz AC 220V 50 2 Usable temperature Humidity 5 35 C 20 80 RH non condensing Dimensions 220 W X 212 D x 59 H mm SPECIFICATIONS Regular color TV Memories Display Display capability Colors 512 VIDEO Video outputs RGB Control terminals 2 control pad etc can be attached Game
24. he interrupt response vector can be superimposed on the data bus READ signal 0 is output while the MPU accept the data from a peripheral LS The data in the designated LSI or memory is gated by this signal and can be superimposed on the MPU data bus WRITE signal This is output when the data to be stored in the memory or peripheral LSI is superimposed on the MPU data bus Bus acknowledge signal When the BUSREQ signal is input the BUSACK signal informs the peripheral LSIs that the address bus and data bus of the MPU and the MREQ IORQ RD and WR signals have been set to high impedance WAIT signal The WAIT signal informs the MPU that the designated memory or peripheral LSI is not ready for data transfer The MPU continues in the wait state as long as the WAIT signal is Bus request signal The BUSREQ signal requests to set the address bus and data bus of the MPU and the MREQ IORQ RD and WR signals to high impedance BUSREQ is usually used as the wired OR and a pull up resistor is connected externally Reset signal The RESET signal initializes the MPU and should be active 0 for at least 3 clock signal periods Signal that indicates machine cycle 1 0 is output together with the MREQ in the command operation code fetch cycle When 2 byte operation codes are executed 1 is output each time the operation code is fetched MI is output with the IORQ signal in the maskable interrupt acknowledge cycle
25. restart function For cartridge and extension Design and specifications are subject to change without notice Reset button 2 IDENTIFYING PARTS 2 1 FRONT amp TOP OF CONSOLE CONSOLE Cartridge Slot Reset Button Povver On Indicator Control Port 2 Povver Button Control Port 1 Directional Button D Button Start Button Button B CONTROL PAD 2 2 BACK OF CONSOLE n A V OUT ADAPTOR 2 3 ACCESSORIES GENESIS RF Unit n SEGA 7 NO MK 1632 NTSC VA CHSC ANN MEGA DRIVE II RF Unit Peritel Cable Except French model French model only AC Adaptor Except U K Austraria and New Zealand AC Adaptor Sega 16 bit Game Cartridge Provided or Sold separately Australia and New Zealand 3 DISASSEMBLY 3 1 Dismantling procedure Removal of bottom screws and top case 1 Turn the power button off 2 Turn the unit over See Fig 1 3 Remove four screws 202 4 Remove top case 1 Main board removal See Fig 2 1 Remove nine screws 201 2 Remove the shield plate 3 Remove two screws 203 4 Remove the main board from the bottom case 2 Fig 1 3 2 Reinstalling procedure Main board reinstallation 1 Attach the 64 pin cover 8 2 Attach the main board to the bottom case 3 Tighten two screws 203 4 Attach the shield plate 5 Tighten nine screws 201 Top case rein
26. stallation 1 Turn off the tactile power switch TACT SW the main board 2 Attach the top case 3 Engage the top case with the bottom case Tightening the screws on the bottom case 1 Turn the unit over See Fig 1 2 Tighten four screws 202 Fig 2 47P MEGA DRIVE I NOT USED 2 0 ul z au o 3 8 e NOT USED NOT USED DIFFERENCE TABLE FOR DIAGRAM 1 SCHEMATIC DIAGRAM 2 5 2 5 3 SCHEMATIC DIAGRAM 3 res es 1 7 Sear d L MEGA DRIVE Il COUT MEGA DRIVE 1 TYPE S TYPE SM ioo 2 cm p me 6 Es ise 6 mx ES Kk aK 1 2K IC2 3 IC HM65256BLFP 10 IC TC51832FL 10 IC TC51832AFL 85 No 315 0547 10 315 0677 Parts No 315 0759 85 IC TC81832AFL 10 IC LH5P832N 12 Parts No 315 0759 I0A Parts No 315 0760 12A Outside View Pin Layout Operation Mode Block Diagram ET El El TIMING PULSE GEN CONTROL 17 18 IC4 IC Z84C0006 IC UPD9033GB 4 3B4 IC TMPZ84C00AU 6 Parts No 315 0738 R Parts No
Download Pdf Manuals
Related Search