llfliA" SERVICE MANUAL SEGA SATURN (PAL) NO. 013- 1 ISSUED JUNE, 1995 CONTENTS 1. SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3 2. IDENTIFYING PARTS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 4 3. ACCESSORIES· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5 4. IDENTIFICATIONS AND LOCATIONS OF CIRCUIT BOARDS · · · · 5 5.
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully the instructions below when servicing. Warning When servicing, do not approach the laser exit with the eye too closely. In case it is necessary to confirm laser beam emission. Be sure to observe from a distance of more than 30 em from the surface of the objective lens on the optical pick-up block.
SATURN COMPATABILITY Audio CD: The normal audio Compact Disc is playable on the Saturn machine, and can be altered with all the effects of a modern Hi-fi and more. Surround sound, vocal cut-out for Karaoke, program sequence of tracks and shuffle to name but a few. You need no extra equipment to play music CDs on your Saturn. CD+G: CD and Graphics are a format where simple visuals can appear on the screen that relate to the music. These visuals might include stills of the band, or other pictures.
Frame Buffering: A technique to maximise graphic display performance by letting the graphics processor chip "set aside" images it has already calculated, allowing it to work on enerating the next fraction of a seconds visual images, all while the screen is still busy painting the last fraction of a second's display. Playfields: The background(s), anything that is on screen that it not a . sprite. When two playfields (layers of bacground) are contolled properly, parrallax scrolling can result.
1. SPECIFICATIONS Ratings MK - 80200-50 Model Power supply AC220-240 V 50/60 Hz Power consumption Approx. 20W Operating environment Dimensions Temperature 5 °C to 35 °C HumiditylO% to 80% RH (no condensation) 260 mm(W) X 230 mm(L) X 83 mm(H) (10.2 inches) x (9.0 inches) x (3.2 inches) Specifications CPU Memories Graphics Master 32bit RISC SH2 (28.4 MHz, 25MIPS) Slave 32bit RISC SH2 (28.4 MHz, 25MIPS) Sound 68ECOOO (11.
2. IDENTIFYING PARTS 2-1. Front View of Console OPEN Button 2-3. Control pad Cartridge Slot RIGHT SHIFT Button A Button B Button C Button ACCESS Light DIRECTIONAL Button CONTROL PORT 1 START Button CONTROL PORT 2 2-2.
3. ACCESSORIES Positive Side B RGB Cable Lithium Battery (CR2032) AC Cable [UK] AC Cable [SOE] AC Cable [AUSTRALIA] 4. IDENTIFICATIONS AND LOCATIONS OF CIRCUIT BOARDS CD Drive Unit P. SW Board Main Board R. SW Board Fig.
5. DISASSEMBLY PROCEDURE 5-1. Top Case Removal 5·3. CD Drive Unit Removal 1) Remove six screws ® and then the top case in the direction of the arrow. 1). Disconnect two connectors and one flat cable. 2) Remove the CD drive unit in the direction of arrow ©. Fig. 5-1 5-2. CD Compartment lid Removal 1) Remove two screws ® and then the bracket lid CD Fig. 5-3 5-4. SH-1 Board Removal l) Remove four screws ® and then the top shield plate.
5-5. Main Board Removal 1) Remove four screws unit supports. 2) Remove five screws ® holding the CD drive © and then the main board. Fig. 5-5 5·6. Power, Power Indicator and R. SW Boards Removal I) Remove three screws If@ and then the power board. 2) Remove screw ® and then the power indicator board. 3) Remove two screws @ and then the R. SW board. R.SWBoard Fig.
6. CD DRIVE MAINTENANCE AND ADJUSTMENT 6-1. Maintenance of Pickup I) Checking the laser diode As the laser diode wears out, the RF level (amplitude of eye pattern) becomes lower. Check that the RF level is 0.8V - l.4Vp-p during maintenance. If the RF level is less that 0.8Vp-p then the pickup should be replaced. 6-2. Laser Pickup Replacement Procedure Turn the power switch off and unplug the power cord from the AC outlet. 1 Replace the pickup.
6-4-1. FE (Focus Error) bias adjustment and focus gain adjustment Adjustment Preparation Apply markings to the positions of the variable resistors before adjustment. If the adjustment are out of the specifidtions, the following symptoms may occur. I. Connect the oscilloscope to test point FE IN as shown in Fig. 6-2. 2. Turn the power switch on and set the CD drive to [Focus gain] the stop mode. 3. Adjust Rll4 (FE bios) so the DC voltage at the test point (FE IN) is OV. 4.
7. BLOCK DIAGRAM .-----------------· 1 MPEG 1 fCtRTRI DGE CONNECTOR CNl L _t POWER SUPPLY BOARD ..__ CLOCK! 14 2 __, ~ J,I 1 ~t~l (Ng~o8~~Dl /'1/ NTs/ / / DOTSEL EXTCLK ·28. 6MHz 32bit RISC CPU ·4Kbyte CACHE • INTERNAL MATH PROCESSOR •32bit INTERNAL/EXTERNAL 3 SHI ~ BOARD CONNECTOR scu OCU IC301 lJ _ 1----. I 1 _ ---.. ~ SHl IC!OI BUFFER RAM I CI02 4Mb it \ 1+----------\\--L__----f---+--_j 1 ~ l ---- ....-~--..
8. SCHEMATIC DIAGRAMS 8-1. Schematic Diagram-1 [Main C.
8-2. Schematic Diagram-2 [Main C.B - 2/6] @ EXIIC IB YIIEO@ GD~~~~ ~~~~~--~------------------------------------------------------------------------~~ ® BIBJS OOTQ..K2 ±~fUSED 88 ® 1 ® r£U( I ,.....__.!i_ @ STSRES ~ RESET !C12 FOR~S F'mru ,60 Fnro =~ 2 _R( N~--------=:d 0Tr mo 49 FOAS ~: FOA6 · '' l'--i800 Sf.'--- - - -- ----!8 ~! 'IIIUSO 1'-~re:;,----------'< JJM r-~:;;----------'<7-1 1'----lO::f.--- -- -1'-----.
8-3. Schematic Diagram-3 (Main C.B - 3/6] @ ® OOBUS ® STSRES 811 ~!g Ell lllUSCOHROL @ ~ rnK I BOO 6 I 6 4 3 2 l 126 801 802 803 804 80S 806 807 BCSS 8R!JYS IRQS ti:QK ~ ~~~ ~~ ~ _,,...
8-4. Schematic Dlagram-4 [Main C.B- 4/6) 118 TRCl. 18 - 118 1 BB ECAaJS IC3D 74l5245 CAl 2 3 4 10 II s 12 AJ 6 A4 7 AS 8 16 9 A7 Cl2 CAJ CA4 CAS CA6 CA7 CAS ~ BB ECOIIUS 80 81 82 83 84 8S 86 87 18 r< 17 r< 16 [-< 15 14.
8-5. Schematic Diagram-5 [Main C.B - 5/6] e48 1«11 USED 10 svec IP65 svee IC35 01 R69 IOK ISSI84 • !~lS 47• R"l S. IK IN ·fit l Sill~ "RES %our II Rl37 lOOK f-r H475 CSI ~OP vee @ECIIIUS r-oJPII.~ JPI2 R68 lJOK ::!: X4 1_32. 768KHz f--o JPil l ' ~ 5 vee RA8 I OKx8 ...-.- 0. ,_...
8-6. Schematic Diagram-& [Main C.B - 6/6) 1 @ XIMTA .!!!. @ O.AI.IIIOIIf ..!!. @es @MillS ~ --.~ ® OOTCI.KI ~ ~ ~ ~ ~ EBCJ(® . EX8G2. 53- CN4 L!l rr---t'- !!. ~ OEEI1 E!. ESD ...!!!!.. _tftGOH ~ ...lli.!! :!!£ @ If!!.
8-7. Schematic Dlagram-7 [SH-1 C.B] RIIO 4 1K TPJ r-----~--------------------------------------------~~~_,--~ com l 52610 RESET GNJ COAT A tllATA l CQIIEQ 2 3 4 5 COtiU 6 CIJIISOC 7 8 9 10 II 12 ll 14 15 16 17 18 19 20 GNJ liCK GNJ DAS CKX II'X GNJ C2F SII'X SCKX SOAS GNJ ACCESS TP4 9 ~- = . -- - - - - -NITe125 USED l N- r------------:;..--t-+------;. RIOl 4.
9. CIRCUIT BOARD DIAGRAMS 9-1. Main Circuit Board 1 2 3 ~=-~·""- -· j-......-- .. __ .• ... ~ ,_ 4 64. D Ct39 837-11493 IC BO SATURN MAIN VAO PAL 171-69638 PC BO SATURN MAIN VAO PAL ~~(M\ 26 @SEGA 1995 27 MADE IN JAPAN .. 5 CE46. CE45 43 44" .-' IC32 .
! TI' •• TI'N TPte Tl'a7 TPH C70 D Cl36 CJ ,0· 2 OD 0 ~~~ Ill"' 3 4 5 6 A c B 29- D E F G -30- H
11. PARTS SPECIFICATIC•It.JS 9-2. SH-1 Circuit Board IC1/2 IC H06417095F28 QFP HITACHI IG H06417095SF28 QFR HITACHt Parts No.: 315-0922A Parts No. : 315-0998 1 •Top View 73 108 72 109 i i i i i i i i ! I i i 114 i 2 HD6417095 i 37 38 • Description No.
No.
No. 1/0 Pin Name 104 105 106 107 108 109 110 Ill 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 - - VCC(PLL)I2 MDO VSS(PLL)I5 MDI CAP! CAP2 MD2 CKPACKN CKPREQN VCC13 N.C VSS16 N.
• Block Diagram ~ MULT (/) ::l co (/) (/) CACHE TAG CPU LU v-- a: (/) 1:==1 §_~ ::l LU-_/ 1- -~ co <( ::r: C) i <( 0 <( LU C) EXCEPTION PROCESS INTERRUPT CONTROLLER ::r: C) <( ~ C) CACHE CONTROLLER A - ..J <( z u; " ~(I 16-bit 10... ::l I K=1 a: ffi h CACHE DATA 1- v ~ k ;; (/) ..J ::l z (/) <( BREAK CONTROLLER ()=~ a: LU 1- ;; ~i 1-~ ~ <( ~ 0 0 1'-' ::l a: <( 0... a: LU VECTOR ADDRESS <( z a: 0... LU (/) ..J ::r: 0 ..
4-Mbit SDRAM IC3/4/11 IC HM5241605TT-17 TSOP IC UPD4504161 GS-A12 TSOP IC HM5241605TT-15 TSOP Parts No.: 315-0928-17 Parts No.: 315-1022-12 Parts No.
ICS SCU {Custom Gate Array) IC CUSTOM CHIP SCU QFP Pans No.: 315-5688 •Top View • Block Diagram 157 156 INT I I f-- '---z:-----1~ CPU A-Bus <••n••••••••·••••·ln.·••••••·•••••••••• p-> 1/F 105 52 1/F DMA 104 53 TIMER - .__ :: - 1-_:-+---ilB B-Bus 1/F DSP • Description No.
No.
No.
No. 1/0 P.
IC6 DCC IC CUSTOM CHIP DCC QFP Parts No. : 315-5778 •Top View 51 80 50 81 I I ! I 100 31 30 •Pin Name No. I 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 1/0 I I 0 TESTl TESTO BEN BDIR VSS DAO DAI DA2 DA3 DA4 DAS DA6 DA7 DA8 - vss - VDD DRASO DRASl DRAS2 DRAS3 DUCAS DLCAS DWE DOE 0 0 0 0 I Name 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 - vss - VDD Al A2 A3 A4 A5 A6 A7 AS I I I 30 I 31 32 33 I 34 I I I No.
IC7 IPL ROM OS SATURN IPL-ROM PAL DIP Parts No.: EPR-17933 Parts No.: MPR-17933 • Top View & Pin Layout AS AS •Pin Name A0-Al7 A10 A11 A12 A13 A14 A15 A16 1 BY'i'E Address inputs CE Chip enable OE Output enable Ground GND BYTE DO-DIS Data inputs/outputs Vee +SV power supply GND D151A-1 07 014 06 010 03 013 05 012 D4 011 ICS BACKUP RAM IC CXK58267 AM-1 OL SOP IC UPD43257B-1 OLL SOP IC M5M5255BFP-12LL SOP Parts No. : 315-0948-10 Parts No. : 315-0930-10 Parts No.
IC9 SMPC IC CUSTOM CHIP SMPC QFP Parts No.: 315-5744 •Top View 52 64 I 51 I 19 33 20 32 • Description No. 1/0 Name 1 - R70 2 3 4 1!0 R71 R72 R73 Function No. Not connected.
IC10 VDP1 IC CUSTOM CHIP VDP1 QFP IC CUSTOM CHIP VDP1 S QFP Parts No. : 315-5689 Parts No. : 315-5883 •Top View 85 126 84 127 I I I I 43 42 • Description No.
No. 4! 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 6! 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 I 110 Name ! 0 VBUS15 NC NC FOAO FOAl FOA2 VSS FOA3 FOA4 FOAS FOA6 0 I I 0 0 0 0 - vee 0 FOA7 FOA8 FOA9 FOCSN 0 0 0 0 0 0 FOWEN FOCLK FRRASN FOCASN FOLDQM FOUDQM 0 - - vss vss Function Address/data bus (Syscon) Not connected.
No.
IC12/13/15/16 IC UPD4502161G5-A12 TSOP NEC IC HM5221605TT-17 TSOP HITACHI IC LC382161T-17 TSOP SANYO Parts No.: 315-0910-12 Parts No.: 315-1017-17 Parts No.
No. 1/0 Pin Name Function 20,21-24,27-30 I AO-A8 Row address (AX0-AX6, AX8) is detennined by A0-A8 level at the bank active command cycle CLK rising edge. (AX7 is don't care.) Column address (A YO-A Y7) is detennined by AO-A 7 level at read or write command cycle CLK rising edge. And this column address become bun;t access start address. A8 define precharge mode command cycle, both banks are prechareged.
No.
No.
No.
IC17 SCSP IC CUSTOM CHIP SCSP QFP YAMAHA Parts No. : 315-5687 •Top View 65 96 64 97 33 32 • Description No.
No. 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 1/0 1!0 - 1/0 - 1/0 - l/0 0 0 0 0 I - 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 I - I . Pin Name MDI MD2 YDD MD3 MD4 MD5 MD6 MD7 MD8 vss MD9 MDIO MDII MD12 MD13 MD14 YDD MD15 DSD DBCK DLRCK DSCK SCA23 SCA22 SCA21 SCA20 SCA19 YSS SCA18 SCA17 SCA16 SCA15 SCA14 SCA13 SCA12 SCAli SCAlD YDD SCA9 SCAB SCA7 SCA6 SCA5 SCA4, Functior,.
No.
IC18 SOUND CPU (68000) IC MC68ECOOOFN12 PLCC MOTOROLA Parts No.: 315-0941 • Signal Description •Top View 9 61 ADDRES!iBU s )A2 3-Al vee GND 60 DATA BUS CLK 01 5-00 AS PROCESSOR{ STATUS 26 FCO Rfii FC1 uos Ios FC2 44 MC68ECOOO 43 27 >ASYNCHRONOUS BUS CONTROL DTACK BR BG } BUS ARBITRATION CONTROL IPLO SYSTEM{ CONTROL BERR iPTI RESET IPL2 HALT AVEC INTERRUPT >CONTROL J • Description No. I 2 3 4 5 6 I 1/0 Name - GND D4 D3 D2 Dl DO AS UDS LDS I l/0 ..
IC19 Sound DRAM IC HM514270AJ-8 SOJ HITACHI IC UPD424270LE-70 SOJ NEC IC HM514270Aj-7 SOJ HITACHI Parts No. : 315-0777-80 Parts No.: 315-0739-70 Parts No.: 315-0777-70 IC MN414270SJ-08 SOJ PANASONIC Parts No.
• Description No.
• Description No. 1/0 Pin Name 1 - GNDl 2 3 4 5 6 7 8 9 10 II 12 13 I4 I5 16 0 0 RIN GIN BIN NC SCIN NPIN BFOUT YCLPC SYNC IN NC YCCI !REF VREF COUT YOUT I7 - YTRAP 18 - FO - YCC2 CYOUT BOUT GOUT ROUT GND2 I I I 0 I - - 19 20 21 22 23 24 IC22 0 0 - Function Ground of circuits other than RGB, composite video and Y/C output circuits. Analog RGB signal inputs. The signals should be input with 100%=1 Yp-p (max.). Not connected.
• Block Diagram CKSL1 CKSL2 SYSCLK 6 DATA---t-"------1 SERIAL 5 WS DATA BCK 4 INPUT 4fs DIGITAL UP-SAMPLE FILTER AND FEATURES 13 TEST1 TEST2 APPL APPO APP1 APP2 APP3 3 11 Vooo 9 FILTCL FILTCR 19 20 RCONV1 RCONV2 1 nF VOL 10 IJ. F'l VssA J Vsso .
IC23/24 74VHC04 IC 74VHC04 SOP 300MIL Parts No. : 314-0632 II Top View & Pin Layout 1Y 2 2Y 4 3Y 6 4Y 8 SY 10 6Y 12 IC25 IC S-80741AL-AS CHIP Parts No. : 313-5322 r----------------------------------, II Top View Top View 1 OUT 2 VDD 3 vss 2 OUT 3 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ JI IC26/27/29/30 74LS245 IC 74LS245 SOP 300MIL Parts No.
IC28 OCTAL BUS TRANSCEIVER IC 74ACT245 SOP 300MIL Parts No. : 314-0649 B Logical Operation Circuit BTopView B Truth Value Table INPUT IDIR LlL LIH G H lx FUNCTION ABUS OUTPUT OUTPUT STATE I BBUS INPUT A=B INPUT OUTPUT B=A High impedance z X: Don't care Z: High impedance IC31/32 DRAM IC HM514260AJ-7 SOJ IC UPD424260LE-70-E2 SOJ NEC IC TC514260BJ-70 SOJ TOSHIBA Parts No.: 315-0947-70 Parts No. : 315-0985-70 Parts No.
iC33 IC 74HC157 SOP Parts No. : 314-0634 liD escnptron II Top View Y1 Y2 Y3 Y4 4 7 9 12 No.
SH1 BOARD IC1 01 SHJ CPU " IC CUSTOM CHIP SHi QFP Parts No. : 3l5-5785A Parts No.: 315-5785 •Top View IC CUSTOM CHIP SH1 A QFP 112 85 29 56 28 • Description No. I I 2 3 4 i 1/0 I s 6 7 8 9 10 I I/0 11 12 13 14 15 16 17 18 19 20 21. 22 23 24 2S 26 27 28 29 30 31 32 33 34 3S 36 37 38 39 40 41 42 43 44 45 46 47 48 49 - I/0 1/0 - .
r- No.
SH1 BOARD IC1 02 DRAM IC HM514260AJ-8 SOJ IC HM514260AJ-7 SOJ Pans No.: 315-0947-80 Pans No.
SH1 BOARD !C103 IC CUSTOM CHIP OCU YGR019A Parts No. : 315-5873 IITopView 127 168 126 I I I 42 85 43 84 II Block Diagram SH uP ~'"'""I Jf IRQ 1 l (4M DRAM) L [ SPDATA 1- { -= I== = '7 : -' "0 :za: -~ :E:z i=O (.) -' oo :za: -~ :E:z i=O (.) 18 VIC: VIW we a:o eo ow ow
II Description No.
.. No. 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 110 Name - vss SDLll SDL12 I SDL13 SDL14 SDL15 - vee vss - I I SA21 SA20 SA4 SA3 SA2 SRD - vss I I I I I SHCK SAl IRQOUT SCS2 DACKl - vee vss I DACKO CASH I I I I I CASL SWRH SWRL SA19 TP3 - vss 0 0 0 90 I DSWR DREQ1 DREQO SDH15 91 92 .
No.
LODEDVIEW & PARTS LIST 11. EXP loded View ~ 54 I /_ 11-1. Exp - --: 6 1-2 4 5 21 r---. I -----, -------~-- II I I I I • I I I I I ', 'I [__--=----_-_-_-_-:_-_ r I I _I - - -::..::. =::..-::..::.. ~ I . . .,."'""""' i ~~:2J I I .1--·;-- I I CNI I I I I I I 6 I I I I I L__ A c B - 70 ···.
11-2. Mechanical Parts List Ref. No. Ref. No. Description Parts No. [1] [2] 1 1 610-5862 610-5927 ASSY TOP CASE SATURN EUR ASSY TOP CASE SATURN AUS 1-1 1-2 1-3 1-4 1-5 610-5864 253-7015 253-7013 253-6917-03 253-6919-03 ASSY LID CD SATURN EUR TOP CASE SATURN EUR LID CRTG SATURN USA BUTTON OPEN SATURN USA BUTTON RESET SATURN USA 1-6 1-7 1-8 1-11 1-12 253-6920 253-7012 253-7010 601-7774 250-5404 BUTTON OPEN LEVER SATURN JPN MOUNT POWER UNIT PCB SAT USA PANEL DEC.
11 =3. Electrical Parts List Circuit No. Circuit No. Description Parts No. 11-3-1. IC BD STATURN MAIN VAO USA .. Description Parts No.
Circuit No. Circuit No. Description Parts No. Description Parts No. C11 C12 C13 C14 C15 151-0265 151-0265 151-0265 151-0265 151-0265 CAP CAP CAP CAP CAP CER CER CER CER CER P.COIL CHIP 100UH LOH3C101K04 P.
Circuit No. Circuit No. Description Parts No. C78 C79 C80 151-0265 151-0265 151-0265 CAP CER CP CAP CER CP CAP CER CP 0. lUF 25V ZF2125 0. 1UF 25V ZF2125 0. 1UF 25V ZF2125 C81 C82 C83 C84 C85 151-0265 151-0265 151-0265 151-0265 151-0265 CAP CAP CAP CAP CAP CER CER CER CER CER CP CP CP CP CP 0. 1UF 0. 1UF 0. 1UF 0. 1UF 0.
Circuit I No. I Circuit I No. Description Parts No. Desc r ipt ion Parts No.
Circuit I No. , Parts No. Description I Circuit No. Desc r ipt ion Parts No.
11-4. Accessories/Package List Circuit No. Parts No. Description I C121 C122 C123 Cl24 C125 150-0501 NOT USED 151-D418 NOT USED NOT USED CAP NOT CAP NOT NOT E CP 47UF 6. 3V MV6. 3VC47M USED CER CP 0.
II © 1995 Sega Enterprises, Ltd.
