Sega Mega-CD User manual

MAINTENANCE MANUAL
EXPORT
August, 1992
SEGA ENTERPRISES, LTD.
Rev. A

MEGA-CD
l\IIAINTENANCE
MANUAL
EUROPE
+.INDEX+
1 .
BLOCK DIAGRAM
2. ASSEMBLY DRAWING ,6
2-1. GENERAL REFERENCE NUMBER LIST 4
2-2. ASSEMBLY LIST 5'
1001 TOP CASE ASSEMBLY ~~~
1 0 0 2 S I D E C0 V E R & S I D E K N 0 B AS S ~ MB L Y &"'- q
1003 SIDE COVER ASSEMBLY 10·-/l
1004 CD-ROM UNIT SHIELD ASSEMBLY j}~(~
1005 MAIN BOARD ASSEMBLY l4-i5
1006 CD DRIVE UNIT & SUB BOARD ASSEMBLY lb-(7
1 0 0 7 B 0 T T 0 M SH I EL D & F R0 NT C0 V E R A S S EM B L Y I S"' --1 q
2-3. PROCEDURE OF DISASSEMBLY AND ASSEMBLY '()_gJ -JI
3.
SPARE PARTS LIST
4.
ACCESSORIES LIST
5.
PCB REPAIR PROCEDURE
6.
SOFT & HARD CHECK MANUAL
,~-

7 .
PARTS SPECIFICATION
'I
7-1.
MAIN BOARD I C1
IC HD68HCOOOCP-12
7-2.
MAIN BOARD
IC2 IC CUSTOM MCE2
MB634120
7-3.
MAIN BOARD
IC3 IC CUSTOM RF5Cl64A
7-4.
MAIN BOARD IC6
IC MB3790
7-5.
MAIN BOARD I
C7. 8
IC TC511664BZ-80
7-6.
MAIN BOARD IC10.11
IC TC51832FL-10
7-7.
MAIN BOARD
IC13
IC LC8951
7-8.
MAIN BOARD
IC14.15
IC MB8464A-80
7-9.
SUB BOARD I C1
IC LC7883KM
7-10. SUB BOARD
IC2 IC LC7881M-C
7-11. SUB BOARD
IC3.4.5
IC
J.LPC844G2
8. PARTS LIST OF PCB
8-1. IC BD MEGA-CD MAIN BD EXPORT
8-2. I C BD MEGA-CD SUB BD EXPORT
8-3. ASSY MEGA-CD CONNECT BD EXPORT
9.
SCHEMATIC DIAGRAM
9-1.
PC BD MEGA-CD MAIN
BD
9-2. PC BD MEGA-CD SUB BD
9-3. PC
BD
MEGA-CD CONNECT BD
1 0.
MOUNT DIAGRAM
10-1a. IC BD MEGA-CD MAIN BD COMP SIDE
10-1b. IC BD MEGA-CD MAIN BD SOLD SIDE
10-2a.
IC
BD
MEGA-CD SUB BD
COMP SIDE
1 0-2 b.
IC BD MEGA-CD SUB BD SOLD
SIDE
10-3a.
IC
BD MEGA-CD CONNECT BD COMP
SIDE
1 0-3 b.
IC BD MEGA-CD CONNECT BD SOLD
SIDE
1 1. PCB DESIGN
SPEC.
b) -&4
315-5548
6<-11~
315-5476A
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S:\
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tDLf
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I Db
10(
JO%
req
reo,
11-1a.
PC
BD
MEGA-CD
MA I N B0 ARD C0MP S I DE LAYER I \ \
11-lb.
PC BD
11-2a.
PC
BD
11-2b.
PC
BD
ll-2a.
PC
BD
11-2b.
PC
BD
MEGA-CD
MEGA-CD
MEGA-CD
MEGA-CD
MEGA-CD
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MAIN BOARD SOLD SIDE LAYER t'v
SUB BOARD COMP SIDE LAYER \\''J
SUB BOARD SOLD SIDE LAYER \\~
CONNECT BOARD COMP SIDE LAYER \l~
CONNECT BOARD SOLD SIDE LAYER 1\5

MEGA-CD
EXPORT
BLOCK DIAGRAM
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VER 0.5 1991/07/02

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MEGA-CD
EXPORT
ASSEl\/IBLY
DRA"W"I NG

SEGA-CD
GENERAL REFERENCE NUMBER LIST
REF NO.
PART NO.
DESCRIPTION
QTY
---------------------------------------------------------------------------------------------------
001
253-6437
TOP CASE MEGA-CD 1
002
610-5268
ASSY BOTTOM CASE MEGA-CD
1
253-6438
BOTTOM CASE MEGA-CD 1
601-6727
RUBBER FOOT MEGA-CD 4
003
xxx-xxxx
ASSY SIDE KNOB MEGA-CD
1
253-6442 SIDE KNOB MEGA-CD
1
253-6443 SIDE KNOB HOLDER MEGA-CD
1
029-0060
TAP SCR PH 2.6*6 1
004
253-6441-02
SIDE COVER MEGA-CD EXPORT
1
005
253-6439-01
FRONT COVER SEGA-CD USA
1
1 0 1
837-8952
I C BD MEG A-CD MAIN B D EX P 0 RT 1
102
837-8953
I C BD MEGA-CD SUB BD EXPORT
1
1 0 3
839-0534
ASSY MEGA-CD CONNECT BD EXPORT
1
201 012-0310
TAP SCR PH
3*10
14
202 029-0089
TAP SCR PH
3*8 BLK 6
203 012-0410 TAP
SCR PH
4*10
2
204 012-0312
TAP
SCR PH
3*12
4
301 250-5289
SIDE COVER SHIELD
1
302 250-5280
CD-ROM UNIT SHIELD
1
303 250-5287
MAIN BD SHIELD TOP
1
304
250-5288
MAIN BD SHIELD BOTTOM
1
305
250-5286
BOTTOM SHIELD MEGA-CD
1
401
xxx-xxxx
ASSY CD DRIVE UNIT (JVC EL"tv'l-135)
1
610-5270-10
CD DRIVE UNIT (JVC ELM-135)
1
253-6440-01
FRONT DOOR SEGA-CD USA 1
501
610-5364
ASSY SIDE COVER MEGA-CD EXPORT
1
- 1 -

ASSEMBLY LIST FOR SEGA-CD
INDEX-
1 001 TOP CASE ASSEMBLY
1002 SIDE COVER & SIDE KNOB ASSEMBLY
1003 SIDE COVER ASSEMBLY
1004 CD-ROM UNIT SHIELD ASSEMBLY
1005 MAIN BOARD ASSEMBLY
1006 CD DRIVE UNIT & SUB BOARD ASSEMBLY
1007 BOTTOM SHIELD & FRONT COVER ASSEMBLY
- 2 -

PARTS LIST FOR SEGA-CD
1001 TOP CASE ASSEMBLY
REF NO. PART NO.
001
201
202
253-6437
012-0310
029-0089
DESCRIPTION
TOP CASE MEGA-CD
TAP SCR PH 3*10
TAP SCR PH 3*8 BLK
- 3 -
QTY
1
6
2

1001 TOP CASE ASSEMBLY
7

PARTS LIST FOR SEGA-CD
1002 SIDE COVER & SIDE KNOB ASSEMBLY
REF NO. PART NO.
003
203
50 1
xxx-xxxx
253-6442
253-6443
029-0060
012-0410
610-5364
DESCRIPTION
QTY
ASSY SIDE KNOB MEGA-CD 1
SIDE KNOB MEGA-CD 1
SIDE KNOB HOLDER MEGA-CD 1
TAP SCR PH 2.6*6 1
TAP SCR PH 4*10 2
ASSY SIDE COVER MEGA-CD EXPORT 1
- 4 -

1002 SIDE COVER & SIDE KNOB ASSEMBLY

)ARTS LIST FOR SEGA-CD
'003 SIDE COVER ASSEMBLY
~EF NO. PART NO.
DESCRIPTION
QTY
)04
253-6441-02 SIDE COVER MEGA-CD EXPORT
1
l 0 3
839-0534
ASSY MEGA-CD CONNECT BD EXPORT 1
204
012-0312
TAP SCR PH 3*12 4
3 0 1
250-5289
SIDE COVER SHIELD 1
- 5 -
10

1003 SIDE.COVER ASSEMBLY·
. r
r .
.J------0
t-------@)
Ii

-
)ARTS LIST FOR SEGA-CD
l004 CD-ROM UNIT SHIELD ASSEMBLY
·----------------------------------------------------------------------~---------------------------
REF NO. PART NO.
DESCRIPTION
QTY
2 0 1 012-0310
TAP SCR PH 3*10 3
302
250-5280 CD-ROM UNIT SHIELD
1
- 6 -
IJ

1004 CD-ROM UNIT SHIELD ASSEMBLY

PARTS LIST FOR SEGA-CD
1005 MAIN BOARD ASSEMBLY
REF NO. PART NO.
1 0 1
201
303
304
837-8952
012-0310
250-5287
250-5288
DESCRIPTION
IC BD MEGA-CD MAIN BD EXPORT
TAPSCRPH3*10
MAIN BD SHIELD TOP
MAIN BD SHIELD BOTTOM
- 7 -
QTY
1
3
1
1
i4

1005 MAIN BOARD ASSEMBLY

PARTS LIST FOR SEGA-CD
1006 CD DRIVE UNIT & SUB BOARD ASSEMBLY
REF NO. PART NO.
102
2 0 1
202
837-8953
012-0310
029-0089
DESCRIPTION
IC BD MEGA-CD SUB BD EXPORT
TAP SCR PH 3*10
TAP SCR PH 3*8 BLK
QTY
1
2
4
401 xxx-xxxx ASSY CD DRIVE UNIT (JVC ELM-135) 1
610-5270-10 CD DRIVE UNIT (JVC ELM-135) 1
253-6440-01 FRONT DOOR SEGA-CD USA 1
- 8 -

1006 CD DRIVE UNIT & SUB BOARD ASSEMBLY
( )
R- /7