sega master system ii service manual, april, 1991

Sega Master System II

SERVICE MANUAL

APRIL, 1991 SEGA ENTERPRISES, L TO.

OVERSEAS CONSUMER PRODUCTS DIVISION

TABLE OF CONTENTS

General 1. Product Number and Color Specifications 2. AC Adaptor Specifications 3. Product Dimensions and Weight 4. Electrical Specifications

Repair Procedures 1. Flowchart for Troubleshooting Fault Locations 2. Main Unit

A. Servicing the main unit B. Possible symptoms for each fault location C. In the event picture appears alone without sound D. In the event picture is not present E. in the event controls do not respond normally

3. Software (Card or Cartridge) Malfunctions 4. Auto Switchboxes 5. Controller Related

Diagrams and Parts Lists Schematic Diagram for PAL Version PCB Parts Location Diagram for PAL Version Parts Listtor PAL Version Schematic Diagram for RGB Version PCB Parts Location Diagram for RGB Version Parts List for RGB Version

p. 1 p. 1 p.2 p.2

p.3

p. 4-5 p.6 p. 7 p. 7 p. 8 p.9 p. 10 p. 10

p. 11-13 p. 14-18 p. 19-21 p. 22-23 p.24 p. 25-26

1. PRODUCT NUMBER AND COLOR SPECIFICATIONS

Color Territory . Model No. Format System RF Modulator

America MK-3006 NTSC M 20Q-5118-0 1 or 200-5115

Canada MK-3006-22 PAL 8 (VV) 200-5194-02 Australia MK-3006-03 PAL 8 (VE) 200-5198 N. Zealand MK-3006 PAL D 200-5139 China MK-3006-15 PAL G 20Q-5086-02 Germany MK-3006-18 PAL G 200-5086-02 France MK-3006-09 PAL RGB NONE

2. AC ADAPTOR SPECIFICATIONS

Territory

America

Canada

Australia

N. Zealand

China

Germany

Parts Model No.

MK-3006

MK-3006-22

MK-3006-03

MK-3006-04

MK-3006-15

MK-3006-18

Diagram Voltage/ Number Number

400-5115 H-0246

400-5123 H-0249

40Q-5050 H0133

40Q-5050 H-0133

400-5093-91 H-0158-01

400-5126

Plug Frequency

AC120V + 10%/ 60Hz AC120V ± 10%/ 60Hz AC240V + 10%/ 50Hz AC240V + 10%/ 50Hz AC220V + 10%/ 50Hz AC220V + 10%/ 50Hz

Channel

3/4

3/4 0/1 2/3 3/4 36 -

A Type

A Type

S Type

S Type

A Type

CType

3. PRODUCT DIMENSIONS AND WEIGHT

Main Unit Dimensions Main Unit Weight

Packed Dimensions Packed Weight

256 (W) x 172 (D) x 81.5 (H) mm 790 g

360 (W) x 216 (W) x 125 (H) mm 1.7kg.

Master Carton Dimensions (6 pcs./carton) 450 (W) x 400 (D) x (390 (H) mm Master Carton Weight 11.5 kg. (0.072 m3 )

4. ELECTRICAL SPECIFICATIONS

Power

CPU

RAM

V-RAM

ROM

Scrolling Screen

Sprite Screen

Character Patterns

Scrolling Directions

Sound

AC 220V or 240V, 50Hz

Z-80A 3.58 MHz

64 Kbit

128 Kbit

1Mbit

256 x 192 dot 32 colors displayed from a palette of 64

64 sprites of 8 x8 dot or 8 x 16 dot on screen 16 colors displayed from a palette of 64

Maximum of 448 types

Horizontal, Vertical, Diagonal

Three types plus noise

REP AIR PROCEDURES

1. FLOWCHART FOR TROUBLESHOOTING FAULT LOCATIONS

Power switch check

IC8 OUT +5V check

Reset circuit check---------1

XTAL 10.738 MHz output check IC4; pin41

ICl: pin 6 clock 3.58 MHz check

IC2: pins 20, 22 pulse IN check

1 ~3: pins 1, 20, 22, 27 pulse check

IC5: RGll sigiwl. C. SYNC signal check; Audio signal check

1C6, IC7: pins 20, 22, 27 pulse check

IC9: pins 1 to 2,3,4, RGB IN check;' pin 19 to 20, C. VIDEO OUT check

RF modulator IN check; RF modulator OUT ( + 5 V) check

2. MAIN UNIT (POWER BASE)

(A). Servicing the Main Unit (Power Base)

Parts Test Procedure

1. IC 8 (LM7805) power check.

(1) INPUT DC 9V (2) OUTPUT V cc=DC5V

2. Power check of ICs ( 1) Is V cc 5V power present?

3. Is reset circuit operating?

(1) Use tester to measure voltage of JR. Should be 0-3.6 V (slowly rises).

4. Is oscillator circuit working?

(1) Pin 41 ofiC4: AC 6 Vp-p; 10.738635 MHz ±100Hz

I-I 9J liS

\Iv,,.,,

(2) Pin 33 ofiC 5 clock 3.579545 MHz ±30Hz

ruuu Vp-p

I I 225.6 Ns.

(3) Pin 42 ofiC4 clock:4.43361875 MHz .± 30Hz

llJlJlJ~ Vp·p

I I 279 Ns.

Fault Location

1. IC8 (LM7805) faulty. 2. Soldering Faulty. 3. Short Circuit 4. Printed circuit board (PCB)

pattern is cut. 5. POWER switch is faulty. 6. Heat sink attachment

faulty. 1. PCB pattern is cut. 2. Soldering is faulty.

1. Capacitor Cl8 faulty. 2. Soldering faulty. 3. Resistor R4 faulty.

l.OSC (53M! faulty 2. Soldering faulty 3. PCB pattern is cut 4. IC 4 is faulty 5. Frequency exceeds allowable deviation.

NS=I0-9s Symptoms

1. LED doesn't light. 2. No picture

1. No picture. 2. Screen is black.

1. No picture. 2. Screen is black.

1. No picture

2. Color may be monochromatic

5. Check connectors I. Broken from excessive 1. No picture (I) Make visual check of weight. 2. Picture is monochromatic.

connector pins. 2. Soldering faulty. 3. Characters are unnatural. 3. PCB pattern is cut. 4. Controls do not respond

(2) Check for faulty soldering 4. Tenninal plugs are dirty. properly. connections

6. Check button 1. Switch is loose. I. No power voltage switches. 2. Soldering faulty. present.

( 1) Check power button 3. PCB pattern is cut. 2. LED doesn't light. switch. 4. Switch is short-circuited. 3. No picture.

4. Reset occurs (2) Check Pause buttons~tch I. Soldering faulty spontaneously.

2. PCB pattern is cut 5. Characters suddenly 3. Blade is not parallel with appearabnonnal.

circuit board. 4. Switch is short-circuited. 1. Pause doesn't operate

properly.

7. Check RF modulator I. PCB pattern is cut. 1. No picture (1) Is OUT +5V present? 2. Soldering is faulty. 2. Picture appears dirty.

3. RF modulator is faulty. 3. No sound. 4. IN event IC9 is faulty. 4. Much audio noise.

I. RF modulator is faulty. 1. CH3 appears, but not CH4.

(2) Check channel selector: 2. CH4 appears, but not Arc Cl-13 and CH4 ok? CI-13.

(ll) Possiulc symptoms for each f:mll location

Fnull Location (Contents of mulfunction)

1. When ICl (Cl,U) is faulty.

2. When IC2 (OS ROM~ is faulty.

3. When ICJ RAM is faulty.

I 4. When IC4 Is fnulty.

5. When IC5 is faully.

6. When IC6, IC7 urc faulty.

- 7. When IC8 Is faulty.

8. When IC9 is r:aully.

Symptom

1. System doc:sn't operate at all. No picture at all.

l. Since this is the program which operates the system, no pi~:turc will appear. ·

2. Depending on the case, a mosaic pattern may appear.

1. Since this is the unit that temporarily records data, no picture will appear.

2. Depending on the case, a picture may appear, but it i~ easily distorted.

1. Since this IC emits several control signals, no pi~:ture will ap-pear.

2. Cont~ollcr may not respond properly. 3. Pause, reset may not respond properly.

4. lf no oscillation is present, clock 3.58 MHz is not produ~:cd, with result that system docs not operate at all; no picture will appear.

In addition, several control signals arc involved; if fault is prc-1. sent, system wiiiiiot operate and no picture will appear. 2. Even if a picture appears, characters may be distorted. 3. Colors may be improper. 4 · Sound may appear alone without picture. 5. Picture may appear alone without sound.

1. Since these parts arc responsible for temporarily storing color data, picture may not appear.

2. Even if picture appears, colors may be improper. 3. Characters may be distorted. 4._ Picture may be move sluggishly or jerkily.

1. Since this is + 5 V stabilized current, if malfunction is present, uniform + 5 V is nol present; system will not operate and no picture will appear.

2. LED doesn't light.

I. Since this part convens the RGB signal to composite moue, a malfum:lion will result in no pkture.

2. [\'Cil if a picture appears. color may be abnormal.

---·--·-·--·------·----------- -··--·· ··-- __ .. _____ -·-------·-----------------------·-··

(C). In the event picture appears alone without sound

Service Procedures Fault Location l. Soldering is faulty.

I .Is audio signal output from 2. PCB pattern is cut. pin 15 of IC5? 3. Q48, Q49, R47 arc faulty (I) MAX 300 mVp-p 4. R46 is faulty (2) 20 Hz-20kHz 5. IC5 is faulty.

6. RF modulator is faulty.

(D) In event picture is not present.

Service Procedures Fault Location 1. C38, R29 is absent or taulty.

1. Is video signal present at pin 2. Soldering faulty. 3 of RF modulaor? 3. PCB pattern is cut.

2. Is video signal output from 4. RF modulator is faulty (when picture is present on RF). pons 19 and 20 ofiC9? 5. IC9 is faulty.

3. Is RGB signal present at 6. Peripheral parts aroundiC9 are faulty. pins 1 ,2,3, and 4 ofiC9?

·-

~ ~ ~ -~V 4" ) z. " ~ ~ z_.t:;-...'

(E) In eYenl coulrols do nul respond non_nnlly

Symplom(s)

1. Game doesn't start. 2. Button may not respond when

pressed. 3. Absolutely no response at all.

4. Demonstration screen doesn't appear ..

5. Switch stays depressed in middle of game.

6. Switch remains fixed in one direction.

7. Starts by itself.

Fnull Localiou(s)

1. CON2 or CON3 faulty (disconnection) 2. Soldering faulty. 3. PCB pattern is cut. 4. IC is faulty. 5. EMI filter is faulty. 6. Resistor 330 ohm is faulty.

7. Check for continuity between CON2 and CON3 terminals and terminals ofiC4.

1. CON2 or CON3 is faulty (short-circuited) 2. Soldering is short-circuited. 3. PCB pallern is short-circuited. 4. IC4 is faulty.

3. SOFTWARE

Software (Card or Cartridge) Malfunctions

Symptoms

1. No picture. Picture remains monochromatic. Picture is mosaic pattern.

2. Characters arc disrupted suddenly in middle of game. Reset occurs spontaneously in middle of game. Other abnormal symptoms appear in middle of game.

l~aull Location

1. Connector (50 pin) is dirty, disconnected, or other connection fault.

2. Soldering faulty. 3. Short-circuit. 4. Capacitor is missing or faulty. 5. IC is damaged from overheating or static electricity.

1. Connection fault at connector (50 pin). 2. Soldering faulty. 3. Capacitor is missing. or faulty. 4. IC runaway overheating.· 5. In tlie case of number 4 above, the problem may be rectified by

adding a capacitor 100PF-180PF at Al3 (address lJ). 6. IC is faulty.

4. AUTOSvnTCHBOXES

Symptoms

1. No picture. Game picture doesn't appear. TV picture doesn't appear.

2. Sound is bad. Much audio noise.

5. CONTROLLER RELATED

Control pads

Symptoms

1. Controller dues not operate. Doesn't move as it should. Game doesn't start.

1. Maves spontaneously by itself. Switch remains depressed in one direction.

Iaull Location

i. Cable is cut or shorted. 2. Plug is faulty. 3. Soldering is faulty on cable connection terminal. 4. PCD paltern is broken or interrupted. 5. Auto-switcher unit is faulty.

1. Cable is cracked. 2. Soldering faulty. 3. Plug connection is faulty. 4. Auto switcher is faulty (adjustment faulty).

Fault Location

1. Cable is cut. 2. Faulty connection at connector. 3. PCD pattern is cut. 4. Conductive rubber is faulty. 5. Soldering faul_ty.

1. Cabl!= is shorted. 2. Solder is greasy. 3. Conductive: rubber is stuck.

Parts List For Master System II PAL Version

LOCATION PART NUMBER DESCRIPTION

ACADAPTOR 400-5130 AC ADAPTOR AC240-/DC 9V 0.5A (Australia) ACADAPTOR 400-5126 AC ADAPTOR AC 220V/DC9V 0.5A (Europe) ACADAPTOR 400-5129 AC 240V/DC9V 0.5A (UK) RF.MOD. 200-5091-A RF MODULATOR UB 3622 (I-PAL) RF.MOD. 200-5198 RF MODULATOR VE 3423{B-PAL VE) RF.MOD. 200-5086 RFMODULATOR UE3622 (G-PAL)

610-5127 ASSY CONTROL PAD 3020-03 610-5128 ASSY RF SW BOX WJRF CABLE 671-1215 SUPPORT BOARD MS2 MULTI 601-6681 STYROFOAM MS2 MULTI lJR 671-1155 BOXC MS2 BLACK MULTI 671-1156 MA CTN MS2 MULTI 672-0228 INSTR MANUAL M4 JR. MULTI 253-6426-01 BOTTOM CASE M4 JR. BLACK PAL 250-5185 TOP SHIELD M4 JR. 250-5186 BOTTOM SHIELD M4 JR. 253-6425 TOP CASE M4 JR. BLACK 253-6352 DOORM4JR. 253-6427 PAUSE SW MR JR. BLACK 253-6428 POWER BUTTON M4 JR. BLACK

PCB 171-5922A PC BD M4JR PAL HOLDER 250-5187 HOLDERM4JR CN1 209-5023 EDGE CONN SOP PSB4D25S-4Rl CN2 209-5017 D-SUB CONN 9P I CN3 209-5017 D-SUB CONN 9P _\ CN4 212-5004 PIN PLUG FOR DC/NP UC-0056 #1 POWERSW 509-5240-0 l SLIDE SW HSW1699-0l-010 PAUSESW 509-5207 TACT SW SKEV AA PAUSESW 510-5019 TACTILE PUSH SW SKEV AA IC1 315-0041 ICZ80A IC2 MPR-12808 IC OS 1M MASK M4 JR IC3 315-0298 IC UPD4168C-20 IC4 315-5237 IC GA UPD65005C-114 IC5 315-5246 IC CUSTOM CHIP UPD9004G IC6, IC7 315-0298-15 IC UPD4168C-15 IC8 313-0092 ICMA7805UC IC9 313-5067 ICCXA1145P D1 481-0 14'9-0 1 DIODE IS2473 D2 481-5038-01 DIODE ISR-35-lOOA L1 180-5033 PEAKING COIL 12 UH L2, L3 180-5032 PEAKING COIL IOOUH R1, R2 479-0472 RES 4.7 KOHM l/6W R9 479-0472 RES 4.7 KOHm 1/6 w Rl1, R22, R24, 479-0102 RES IKOHM l/6W R25 R4 479-0104 RES 100 KOHM 1/6 w

R5,R6 479-0331 RES 3300HM V6W R7, R8 479~0331 RES 3300HM 1/6W RIO 479-0332 RES 3.3KOHM 1/6W Rl2, Rl4, Rl6, 479-0822 RES 8.2 KOHM V6W R28 R13, Rl5, R17 479-0821 RES 8200HM 1/6W R18, R20, R29 479-0222 RES 2.2KOHM l/6W Rl9, R30 479-0152 RES 1.5 KOHM V6W R21 479-0202 RES 2KOHM V6W R26 479-0273 RES 27KOHM 1/6W R27 479-0103 RES IOKOHM V6W C1, C2, C3, C4, 151-0126 CAPCER 82PF 50Y C5, C6, C9, CIO, C11, C12, C13, C25, C53 C7, C8, C19, C23, 151-0020 CAPCER 33PF 50V C45, C46, C47, C48,C49 C14, C17 151-0021 CAPCER 20PF 50Y C15 151-0002 CAPCER 100PF 50Y Cl6, C21, C22 151-0018 CAP CERRA 150PF 50Y CIS, C32, CEI, 150-0023 CAPE 10UF 16Y CE2, CE3, CE4, CE5, CE6 C20, C50 151-0072 CAPCER 51PF 50Y C24 151-0156 CAPCER 270PF 50Y C26,34 151-0011 CAPCER 0.01 UF 50Y C27, C28, C29, 151-0060 CAPCER 0.1 UF 16Y C39,C40,C54 C30 151-0075 CAP CERRA 180PF 50Y C31 150-0009 CAPE 1UF 50Y C33, C35 151-0190 CAPCER 12PF 50Y C36 151-0159 CAP CERRA IOOPF 50Y C37 151-0172 CAP CER 180PF 50Y C38,C42,C43 150-0047 CAPE IOOUF lOY C41 150-0059 CAPE lOOUF 16Y C44 150-0062 CAPE 47UF JOY C51 151-0287 ·. CAPCER 27PF 50Y C52 151-0079 CAPCER 47PF 50Y CP1, CP2, CP3, 151-0170 CAPCERAX 0.022UF 16Y CP4, CP5, CP6, CP7, CP8, CP9, CPIO, CPll, CP12, CP13 FBI, FB2, FB3, 271-0005-1 BEADS INDUCTOR FBA04YA600YB-OO FB4, FB5, FB6, FB8, JV, JG FB7 270-5027 LINE FILTER FB9, FB10 270-5035 LINE FILTER FBR07HA121

EMil, EMI2, 271-0007 EM! FILTER STX222MB EMI3,EMI4, EM15, EM16, EM18, EM21, EM22,EM23, EM24,EM25, EM26,EM28 EMI7,EM27 271-0006 EMI FILTERSTB271KB osc 230-5058 OSC 53.203424M 20PPM RAJ 477-0005 RES PACK 8*4.7K (RA8-4728K) GRS 601-0076 TML JNT CMPD 200G!fUBE (AMI COM)

Parts List For Master System II RGB Version

LOCATION PART NUMBER DESCRIPTION

610-5127 ASSY CONTROL PAD 3020-03 400-5048Y AC ADAPTOR AC220V /DC9V lA 610-0130 RGB BOX FRANCE 671-1215 SUPPORT BOARD MS2 MULTI 601-6681 STYROFOAM MS2 MULTI lJR 671-1155 BOXMS2 BLACKMULTI 671-1156 MA CTN MS2 MULTI 672-02~8 INSTRMANUAL M4 JR. MULTI 253-6426-02 BOTfOM CASE M4 JR. BLACK RGB 250-5185 TOP SHIELD M4 JR. 250-5186 BOITOM SHIELD M4 JR. 670-0835 SEAL SER. NO. M4 JR. RGB 253-6425 TOP CASE M4 JR. BLACK 253-6352 DOORM4JR. 253-6427 PAUSE SW MRJR. BLACK 253-6428 POWER BUTION M4 JR. BLACK

PCB 171-5926A PCBDM4JRVA1 CN1 209-5023 EDGE CONN 50P PSB4D25S-4Rl CN2, CN3 209-5017-01 D-SUB 9P ANGLE TYPE UC-0060 #2 CN4 221-5004 PIN PLUG FOR DC/NP UC-0056# 1 CN5 212-5106 DIN CONN B-TYPE UC-0059#2 POWERSW 509-5240-01 SLIDE SW.HSW1699-01-010 PAUSESW 509-5207 TACT SW SKEV AA PAUSESW 510-5019 TACTILE PUSH SW SKEVAA IC1 315-0041 ICZ80A IC2 MPR-I2808 IC OS IM MASK M4 JR IC3 315-0298 IC UPD4I68C-20 IC4 315-5216 i:>~~~ IC CUSTOM CHIP G/A IC5 315-5246 IC CUSTOM CHIP UPD9004G IC6, IC7 315-0298-15 IC UPD4168C-15 IC8 3I3-0092 ICMA7805UC DI 481-0 I49-0 I DIODE 1S2473 RADIAL D2 481-5038-0 I DIODE 1SR-35-100ARADJAL Rl, R2 479-0472 RES 4.7 KOHM 1/6W R3 479-0104 RES 100KOHM 1/6 w R4 479-0472 RES 4.7 KOHM 1/6W R5,R6 479-0331 RES 3300HM l/6W R7, R8 479-033I RES 3300HM l/6W R59 479-0152 RES 1.5 KOHM l/6W R60, R61 479-0222 RES 2.2 KOHM 1/6W CI 150-0062 CAPE 47UF lOY C2 150-0023 CAPE IOUF 16V

C3, C4 151-0279 CAPCER 56PF 50V C50 150-0059 CAPE 100UF 16V C51, C52 I50-0060 CONN 0.22MF 16V

C53, C54 150-0047 CAPE lOOUF 10V C55 151-0060 CAPCER 0.1UF 16V C61 151-0075 CAP CERRA 180PF 50V C72 151-0159 CAP CERRA 100PF 50V CP1, CP2, CP3, 151-0170 CAPCERAX 0.022UF 16V CP4, CPS, CP6, CP7, CPS, CP9, CE1, CE2, CE3, 150-0023 CAPE 10UF 16V CE4, CE5, CE6 FBI, FB2, FB51, 271-0005-1 BEADS INDUCTOR FBA04V A600VB-OO FB55, FB56, FB67, JV, JG, JPR, JPG, JPB, IPS, X'TAL 230-0046-1 XTAL 10.738635 EMil, EM12, 271-0007 EMIFILTER STX222MB EM13,EM14, EM15, EM16, EM18, EM21, EM22, EM23, EM24, EM25, EM26,EM28 EM17, EM27 271-0006 EMI FILTER STB27 U<B JP1 600-5061 JUMPER WIRE 5MM HOLDER 250-5187 HOLDERM4JR GRS 601-0076 TML JNT CMPD 200G!fUBE (AMI CON) S-LOCK 090-0012 SCREW LOCK CN2L, CN2R, 012-0306 TAP SCR PH 3*6 CN3L, CN3R 7805-HOLDER 029-0214 S-TITE SCRPHM3*8 CN1L, CN1R 048-0001 EYLET3.5*7 DINHOLDER 250-5013 DIN CONN HOLDER

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V ... ~ --

C44J.

~

47u

r77

'I G

C:-1 1 cc: 1;:1 !.:"1&35;:1 :!.:"1 NO· 15!o•n-21p:!.n

I ~I 2

3 M'FiEQ 4

1"0 5 EXMr' s A!.4 I 7 A:.3 L B

AS I 9 A5! I • 0

A'!.!. ; 1

~ --,. I .C:, 4 2 AtO i 3 CE:3 14 07 15 06 :!.6 05 17 04 :!.B 03 -

02 22 23

0:!. 24 00 25 AO 26 A1 27 A2 28 A3 29 A4 30 A5 3:. AS

3~ A7 33 A12 ~ CONT

A~ 36 37 M:!. 36 'fO"REQ 39 ~ 40 HALT 41 W"AA"f

!NT q 43

KI!..LG.l. 44 ~ 45 BUSAK 46 RESET 47 CLOCK 48 !S.§.§.S.b. 49 CSRAM 50 NMI-IN

CON M4 SOP (AI

_, ,, _, _, '

/

/

~ ./

./ I'

~ i

/ /

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=<c?U AOFIES (o .• tSj

.-----------,-·f--..!;,::.!JW~:!..:..;::.!.O~.:.t..-.;..;;;,.;...~--~----------------< C?U CONTROL (o •• 12i

EXT ACRES [O .. ::lj > IC1

~ AO M•. 27 .L

~A:!. __ - '·= B2o 62o ea~l .. ~ 333 A2 ~ ::::;';o / lcil_ . .-r=.:c==.::=---o-o'' :!.:!. ~ ~ A3 IOaQ. ~~-:>..__..~,/T-----.JC= ..-....... [\ :!.0 I AO

~ A4 ~ ~-:;- / IC""_ 1c~~ :::::;:::::: 8 2p ['\ 9 I .3.:!. 0 • ~~ :!.~ \. !::' 3 5 AS RC ;--- U - · ~ I~ A2 o2 1 1'\. :36 I "'-- "-~ o:: ~.-~ ~ ~! R_Ef'_s_r:_: ~-~: ./ L c~~_t.-.-...1 - ~:Tl !~ ~~ ~ [', 3 0- I A 9 H.l.L Tl C f=--"-'--"11r' I ['. 3 4 : A~ 00~, ~~".~ ~ 1'\. 4 0 A:.O -:> .L !'\. ;:~!A; R A:!.1 WAITI4 I t ~~e

A:!.2 -- •5 / 82;JB2p fT7 .k_~ AS

,--s A:!.4 NM ... r 1 4.7k 2

A ••

IC3

00~ 01'~' 02 t~--' o3 1 ;= , 04~ 05~' 06~' 07 r-' 1'\. 4 A:.3 IN~ ':::!7 I (~ R:!. , ~:3 A

4•.o.

-A:!.S ~ 25 ? ~!g >-+--r-:-----r"' -4-1·! :::~o ""us-~· [02*s--!I~Lr-r-1-":..~~"-/'-......_-t>~vcc 2 'l 1 A14 (~ 0:!. ,..,,. :-.:>"" I '

r~e o2 eusAK:..."' l, 4.7k ~::::.. 22 ---v ~ --...-r-·~ -~~2

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./ / ./ /

~ 7 g~ c:.K 6 I 3 . 58M .,;> r- r=-19 ~~;.Q

~ -9 LL,;. ~g=-~~·--..,..-----' ~~~~-*~- 3~:: 7; , CE0._,2.,.,3""C""1'"'o..,:.,....,. 1.-...... ZBOA

'\...CS;:IAM / ./ v /

' ./ ./ /

I I -j I ./ ./ I ./

,jL-~----+-~--~------------------~·~-----------f~--J:~:~~~JT_J:~:~Q~~~~~~~::~=~o.:~~-.,~~·~-~·.·------,------~'1 I/ '-1 r=•t :.O.A T "- rn 71 I C53 82;: I .L ./ ~~~-------4---~~~~-----r~ti~-----:======= " h vee <l----t----,

mv. !=' ro ..:1 " ~4~6~== rh.:'=:f::, t::=;~~~L----~--1-o-~-~-~ ~::._ ___ ~J ~~2:173 ~ E47 I FIESET _j

PAUSE

• C18 ~: _____ -+--r-------5~--, ;1; 10u

1-.a:- -..,. -- -~ --- --- -_: --- ! · : voj102 < : FBB Vr lr"v-:>o rn ..:1

/'ICiC

/

C?2 0 .022u CONNECTOR 099 _L

~CN3 5 3 I 330 1 - ... -- =---='-

1 =~c=~TR/ - 9 FIB .r.. • ;.. tae ~ _s;::;.,. ./ J

CONT 1 p:~ !>VCC · I 1 ~

~.:::: r:: '{'"I l ~~; m! ~llr5-3-.2--o-:3_4_2_4_M_~t:-~--' FSAO<:

I vc= I " i I osc . . 100p r/7 I! 4HCLE I r' I . jEJ

RA. I '1, I'(> - .NC . I 2 AO r::::..- '";,_- '1: AO 3 AS" I • ....... _.._~""' ' ' I e: ou.l . AS 4 A7 1 1 "'~.:,...._~I R:3 1--~---- • A7 I I - I I NOT US<:::::l I . Ve::; 14~ .n

I L.J( GNQ 7o _n r ~~ s ' ./"./" . I~ L------l C1720;:

f77 FiC :30

- O I 4 FS2 - -· E:o-!2.:1 - ·

F99

C?! (; .022u

HL --------------------, 4! ~ !0.7M 1 10.7M ~ j -:- --l- aHCLE- ... - - • ~ - - -

' oo I;~ \ - c:s . = C46

g~ ~ I :!.50p 1 3:3p

g~~ . 'i 05 *-·' fT7 os~ 071~ ;§)~~ SEGA ENTERPRISES,LTC. API!. •l'--iL I 1111 '1 0

I -ASS'Y

I

rT7

REV IC BE> 114JR PAL t= DESCRIPTION

SHE!T 2. 0, 3

vee

AV 0 •• 4 AV r Al

R12 R13 R14 R15 R16 R17 R18

R20 2.21< +

R18 271<

C26 O.Oiu

c••l 0.1u C25 82p

VDD FB4 VRF

t ryyy-, T FBA04

! ! GND vss

res

2 RIN 3 GIN 4 BIN

10 SYNei B AUDIO I

7 NTSe/PAL

5 XOUT 6 XIN

IREF 4 VREF

CXA1145?

ROUT

GOUT

·eouT

SYNeO

AUDIOO

VIDEO

YOUT

YIN

CIN

COUT

L1 12u

FB6 R28 8.21<

23 FBA04

C38 100u R29 • t-----+--"V'V"----,

18 C34

RF MOO Vee (VRF): 1p 1n GND: CASE

R-29 is 33 ohns for PA1,-B (VE), * 1 : 2. 2 Kohms for other ve:~sions.

17 t--=.....------111---, C37

*2: R-21 is 75 ohms for PAL-B (VE), 2 Kohrns for other vers~ons.

15 O.Oiu +----1~BOoC~

R25 11<

C36 100pCH

R24 11<

R22

11<

~~~ SEGA ENTERPRISES,LTD.

l}!IS DIIAWINQ WILl. IH H0 WAY 8! COI'I£0. IT~:T?U~ TO 8£ II!TUR:i!D OH D!JUHD. tt ~HFS;:

ICBJ)/14IR PAL DESCRIPTION

.APR. -Jt~ '71· , f () J.SS'T .. CX"CI l!\7-f• '"At- ''" DIIW. M-111:: !C•/;;·'9c

REV

'171-592~ ".AliT lid. SHUT 3 01' 3

A c .

CN41~..-__ _.

2

( ,., .. ·-3 '

ICO

4

6

15 IC7

POWER.SW

7

:::1::) .;.J· ...:] I

~ J\.J ..:::)

~ :;:, I

~

A 8

D E I. F

)

u

Land near CXA1145 is the positive side .

G H

0.022p CP H

(")

u

1.{)

J ~ ~ MACHINE •tct; SUB·ASS'Y •Clla

610-S/4~ AlTERATIONS

DETAILED DRAWING (View from Soldering Side)

Connect C39 and GND for IC9 with a jumper wire as shown above.

.· I

%

. . .s

JCO

ll

A

CN41.._ ----'

> ~ ..., ..., '-1 VI

~~~~~~

. I POWER.SW

B·

. I

15

c D

Land near.CXA1145 is the positive side.

CE~+~P~+ O.O!lf CP H o · fit H a-

~'-' .,......._, co . I N .... -- ....

.N u

VI 0

CSI..2'1p !D ..,.... ~ if' .... .... 11-~p-

'¥'Q, --~ ~ ... w4.'1" &t ~- H33p

- R2 "N ·M C45 N u~,u

I' .

M u

u~ca ·W *-.'1" . Rl "

E F ~ --=-----~------~-------~----- H

IC. 80 .H4Jf?

DETAILED DRAWING (View from soldering side)

Connect C39 and GND for IC9 with jumper wire as above.

.• ._ ...... ,. =rt1

••m-.·--

. ___ ..:__::<-.J ____ ._c_ ____ -'-'K, _________ J,_ ___ _

.·~: . . . .,. . • . .•. !· "'·:

2

3

JCO

6

-·o-1

~

8 . I

CN41 ...... __ I .

15

POWER .Sf/

IC7

c .

,-..... + o. 021p

*'0-t H '-" CE CP

"-----------· ··-; )

c F

u

C24 -1 f 21)0p IC5

Land near.CXA1145 is the posit.ive side.

.G H

10 O..OZ2p /0 ().O"~ CE..-2:..+ CP C~+ CP-r

o · a ~• e ~• "¢ .........._, co .........._, co

I N ~.....-:..C\1 ..

c N

M u

!!! "<r... ----

~p~ ~~Ej>CB H33p _-w I.J..'1k C45 . Rl

C14 -~·20p RAI

J

~ACHINE a111.~

0~ r~~~;tf-! e a o



IllS IL\WIII 1111. • II Jll X t:rD. ft X l(fHKJ II JCLIU.

:LC BD H4J"R: PAL- 8 CVE) 'l37 -'737/ (D-~) 0 E S C R I P T I 0 N · ~It: PART NO. !iU • &.:.•tt

2

6

7

~ w· ""'? ...::J Vf. \li" ~ 0 I

~ '"'

c ..

c N 41L.. _ ___.I . > ~ -, "")

II\ Ill

~~~~~~ CD CO

POWER.SW

pPD4/ bf! -/!;

IS IC7

0

2 Ua..

_i::;;32 ,..

so Cl9 -~·33p.

E F

Land near CXA1145 is the positive side.

.G H

HEpCB

·W 4.'1}( . Rl



6

A . I 0

CN41,_ _ __.I .

2

3

ICO

4

5

6

IS IC7

POWER.SW

7

~ "J ::J

.:::. '.J ..._ :")

' I \J

::-A B c 0

E F

u

Land near CXA1145 is the positive side •

E F

G H

. 0 022p /0 0.022p CE~+ (:p c~+ cP o·* H U H ~ ..._, co ......._, co ~ I N_ --C\.1

G

T

0 N

H

DETAILED DR~WING (View from soldering side)


K

18.

A 8

2

780'5 I 3

I I I

ICO

4

-

-

6

c

CN41 L.. ~~~ U) !;;

> Cl In CD -, -, ~ ""

~+ C54 if- ~

'-' t"( ,. ·UO.Llc. l.l

ICB C55 inl~ C52 m ·HO.I~ u..

C51 -fh).\.f.L.

0 E G

......

~ 0 ~ a -!b ~~N

-q: ~ 0 rn ~~-

- -C\1 C\1 crcr

.

Oo 0 00 .N

I a:: a.. ~

!!:!:!

I

2

~~o.o2l.tt. CP

H

~

~ 0 I

l.o (T;

tO -~ M u -

I

IC4 I

t ,.

4.2 /"""-

+ * to.t. '-'C2

R3 'M tool< 01 44·1521r'l3

I o ' ; I

' SEGA :ENTERPRISES, LTC.

K L

MACHINE IIUU I SUB-ASS"Y l!::.ll~ /JO-Si.Y,

ALTERATIONS o!:tU

liiS ftliiRS llll II "' 'Ill II Clfi!U. Tilt 1£1111!1 II DOIIII.

-- I -----I-

-

I : I - 2 . -

----1-

----- 3 -----1-

----- 4 ----- 1-

-. -

--- 5 ----------- 6 -----I-

---

LIMITS UNLESS OTHERWISE SPE¢1FIED '' -· 3RDOUAT.PROJ.D11Awi/OG ;Ji"'Jti!: a:Hlf~ II! Ell II!~ if< ::

~ ~:\~~! l ~ ;f;M:~ '~.i I.f'~

~-~~~~,y MATERIAL tm HEAT TREAT. ~:Ill'! FINISH lUi Ill~ REMARK $t"l;:t,;: T RE'I.

sega master system ii service manual, april, 1991

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