Sega Game Gear Maintenance Manual
MAINTENANCE
MANUAL
EUROPE
S
EGA
August,
ENTERPRISES,
1992
LTD.
Rev.
A
GAIVIE
GEAR
1.
2.
2-1.
2-2
1\IIA.INTENA.NCE
BLOCK DIAGRAM
ASSEMBLY
GENERAL
.
ASSEMBLY
1001
1002
1003
1004
MAIN
REFERENCE
BOTTOM CASE ASSEMBLY 1
BOTTOM
BOTTOM
DRAWING
L I S T
CASE
BOARD
CASE
EUROPE
NUMBER
ASSEMBLY
ASSEMBLY
ASSEMBLY
l\IIANUAL
LIST
2
3
2-3.
3.
4.
5.
6.
PROCEDURE
SPARE
PARTS
ACCESSORIES
PCB
SOFT
REPAIR
& HARD CHECK MANUAL
OF
DISASSEMBLY
LIST
LIST
PROCEDURE
AND
ASSEMBLY
7.
PARTS
SPECIFICATION
7-1.
7-2.
7-3.
7-4.
7-5.
7-6.
7-7.
7-8.
8.
8-1.
8-2.
8-3.
8-4.
8-5.
8-6.
9.
MAIN
MAIN
MAIN
MAIN
MAIN
MAIN
DC-DC
SOUND
PARTS
IC
IC
IC
IC
IC
IC
BOARD
BOARD
BOARD
BOARD
BOARD
BOARD
BD
BD
BD
BD
BD
BD
CONV.
BOARD
LIST
GG
GG
GG
GG
GG
GG
SCHEMATIC
IC1
IC2
IC3
IC4
IC5
IC6
BOARD
IC1
OF
PCB
MAIN
MAIN
EUROPE
EUROPE
DC-DC
DC-DC
SOUND
SOUND
DIAGRAM
IC
ZBOA
IC
CUSTAM
IC
CUSTAM SCA
IC
lLPD4364G-15L
IC
HM6256BLFP-12
IC
lLPC358G2
I C 1
IC
TDA2822M
CONV.
CONV.
EUROPE
EUROPE
TMP84COOAM-6
IC
MB3775FP-G-BND
B
EUEOPE
EUEOPE
B
VDP
B
315-5377
315-5378A
9-1.
9-2.
9-3.
9-4.
9-5.
9-6.
0.
1
1
0-1
1
0-1 b.
1
0-2
1
0-2
10-3a.
1
0-3
10-4a.
10-4b.
PC
PC
PC
PC
PC
PC
BD
BD
BD
BD
BD
BD
GG
GG
GG
GG
GG
GG
MAIN
MAIN
DC-DC
DC-DC
SOUND
SOUND
MOUNT DIAGRAM
a.
a.
b.
b.
IC
IC
IC
IC
IC
IC
IC
IC
BD
BD
BD
BD
BD
BD
BD
BD
GG
GG
GG
GG
GG
GG
GG
GG
EUROPE
EUROPE
MAIN
MAIN
MAIN
MAIN
DC-DC
DC-DC
SOUND
SOUND
CONV.
CONV.
EUROPE
EUROPE
EUROPE
EUROPE
EUROPE
EUROPE
EUROPE
EUROPE
CONV.
CONV.
EUROPE
EUROPE
SCA
B
SCA
Comp
Sold
SCA B
SCA
EUROPE
EUROPE
SCA
SCA B
B
Side
Side
Comp
Sold
B
SCA B
B
Side
Side
GAME GEAR
EUROPE
BLOCK
DIAGRAM
·--·-··-··--·-··-··-··-··-··-··-··-··-
i .
..
-··-------------------··----··-··-
··-··-··-··-··-··-··-· ·-·· --·-·· -··-··--·-
---------.
MAIN
t-.)-(0.)- (
(
.:r-
~
RAM
1)
.n
u,#_..r""
~
lrr!
Z80
~
~
I
CPU
~
A5
~
~
~
tS
~
8
VDP
ClJNT!JtU
BUS
..
SCA
RbiJAESS
DATA
SOUND
ANALDDI
l>IITA
LC/J
/>PIVER
rn&J7J!ot.._/11!15
BUS
BUS
8US
VRAM
LCD
UNIT
.
.
I
I
'
-··
.
45P
CARTRIDGE
('r"·
L.
'1"7\--'..,!
- .
SLOT
"I)
:TOY
BUS
CONTROL
PAD
•
(A~--~~~.):)o.,~jtt1~
1
'''7H:l''l!f~4·-t..f•
,
-tln-<
+5V,
-··-··-··-··-··-:rt·-··-·
. , I
-··-··-··-··-·
+34V
--·-··-··-··-··-··-··-·i-~·-··-··-··-··-~·-·
-··-·
-··-··-··-··-··,
DC-DC
CONVERTER
-··-
··-··-
··-------
··-··-··-··-··-·"
..
)l:tH'51
I I
I I
L
G~
I
) :
._
::
I t
I
t
I I I I I
: I : .
!
i
I
i
I I
i
I
. !
I
I I
I
...
-·
_
TV TUNER
GEAR:__~
1
;t~
:
SOUND
I
.-··-··-··-··-··-·
SOUND
GENERATOR
I
'-··-··-··-··-··-··-··-··-··-··-··-·
...
___
-.
-··l
I
~DATA
BUS
CONN.
!
!
VS
!
DATA
··-·
··-··-··-··-··-··-··-··-··-·-~;~·,;:-;.·;:;::c~~·::-i~)
··-··-··-··-··-··,
..
<.EI·(\.)
• (
,_.
(;,·,,'.
!
-&
•t
:.::~.,-
.
~H~
.
1 1 .
11-1a.
11-1b.
11-1c.
11-1d.
11-2a.
11-2b.
11-2c.
11-2d.
11-3a.
11-3b.
11-3c.
11-3d.
PCB
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
DESIGN
BD
GG
BD
GG
BD
GG
BD
GG
BD
GG
BD
GG
BD
GG
BD
GG
BD
GG
BD
GG
BD
GG
BD
GG
SPEC.
MAIN
MAIN
MAIN
BOARD
BOARD
BOARD
MAIN BOARD
DC-DC
DC-DC
DC-DC
DC-DC
SOUND
SOUND
SOUND
SOUND
CONV.
CONV.
CONV.
CONV.
BOARD
BOARD
BOARD
BOARD
COMP
SOLD
COMP
SOLD
BOARD
BOARD
BOARD
BOARD
COMP
SOLD
COMP
SOLD
SIDE
SIDE
SIDE
SIDE
COMP
SOLD
COMP
SOLD
SIDE
SIDE
SIDE
SIDE
MARK
MARK
LAYER
LAYER
SIDE
SIDE
SIDE
SIDE
MARK
MARK
LAYER
LAYER
MARK
MARK
LAYER
LAYER
GAME
GEAR
FOR
EUROPE
GENERAL
REFERENCE
NUMBER
LIST
·--------------------------------------------------------------------------------------------------
REF
NO.
PART
NO.
DESCRIPTION
QTY
·--------------------------------------------------------------------------------------------------
001
002
003
004
005
006
007
008
009
010
0
11
0 1
1
102
103
610-5212
610-5212-01
610-5255
610-5255-01
253-6362
253-6434
253-6363-01
253-6363-03
253-6364
253-6365
253-6366
253-6368
253-6369
253-6378
253-6401
837-7994
837-7994B
837-7997
837-7997B
837-7998
837-7998B
ASSY
ASSY
AS
ASSY
CLEAR
CLEAR
PADGG01
PAD
BUTTON
BUTTON
START
BATT
BATT
POWER
1 OP
ASSY
ASSY
I C
IC
IC
I C
SY
GG
CONN
BD
BD
BD
BD
TOP
TOP
BOTTOM
BOTTOM
LID
LID
IC
IC
CASE
CASE
PLATE
PLATE
03
(CONTACT
1 GG
2 GG
BUTTON
LEFT
LIGHT
KNOB
COVER
BD
BD
GG
DC-DC
GG
DC-DC
GG
SOUND
GG
SOUND
CASE
CASE
GG
GG I
GG
GG
GG
EUROPE.·
GG
EUROPE
GG
USA
GG
USA
NMOLD
GG
GG
GG
CONV.EUROPE
CONV.EUROPE
EUROPE
EUROPE
01
GG
MULTI
GG
MULTI
TYPE)
B ( 1 )
B
0 1
B
( 1 )
( 1 )
( 1 )
( 1 )
( 1 )
( 1 )
( 1 )
( 1 )
1
1
1
1
1
1
1
( 1 )
(
1)
(
1)
( 1)
( 1)
201
202
203
204
301
302
303
304
305
029-0069
012-0312
012-0206
029-0326
509-5334
509-5334-01
509-5335
601-6428
253-6422
250-6243
TAP
TAP
TAP
TAP
RUBBER
RUBBER
RUBBER
LCD
BATT.
SUPPORT
SCR
SCR
SCR
SCR
CUSHION
BLADE
PH
2.6*
PH
3*12
PH
2*6
LH-3
CONTACT
CONTACT
CONTACT
PLATE
2.
GG 1
COVER
10
6*
GG
GG
GG
GG
BLK
10
4P
4P
1 P
GG
01
BLK
01
6
2
1 0
1
( 1 )
( 1 )
3
1
1
GAME
GEAR
EUROPE
.ASSEIVIBLY
DR.A"\NING
003
006
~007
@1--302
203
203
002
010
102
009
ASSEMBLY
INDEX
LIST
FOR
GAME
GEAR
EUROPE
1001
1002
1003
1004
BOTTOM
BOTTOM
MAIN
BOTTOM
CASE
CASE
BOARD
CASE
ASSEMBLY
ASSEMBLY
ASSEMBLY
ASSEMBLY
1
2
3
PARTS
LIST
FOR
GAME
GEAR
EUROPE
1001
REF
008
009
201
204
BOTTOM
NO.
CASE
PART
253-6368
253-6369
029-0069
029-0326
NO.
ASSEMBLY
DESCRIPTION
BATT
BATT
TAP
TAP
1
LID
LID
SCR
SCR
LEFT
LIGHT
PH
LH-3
2.6*
GG
GG
10
2.6*10
BLK
BLK
QTY
1
1
6
1
-
en
ttl
<C
<.
0
0
r:Q
0
E-o
E-o
l)
:;:
0
>-
...J
:;:
r:Q
en
ttl
en
PARTS
LIST
FOR
GAME
GEAR
EUROPE
1002
REF
NON
BOTTOM
NO.
PARTS
PART
ASSEMBLY.
CASE
NO.
ASSEMBLY
DESCRIPTION
2
QTY
0
0
N
PARTS
LIST
FOR
GAME
GEAR
EUROPE
1003
REF
1 0 1
202
203
MAIN
NO.
BOARD
PART
NO.
837-7994
837-7994B
012-0312
012-0206
ASSEMBLY
DESCRIPTION
ASSY
ASSY
TAP
TAP
I C
I C
SCR
SCR
BD
BD
PH
PH
GG
GG
3*12
2*6
EUROPE
EUROPE
B
QTY
( 1 )
( 1 )
2
6
0
C\J
r0
-
0
0
M
z
~
~·
0
0
~·
c::
(J.J
~
...J
>-
:;:
tr.l
tr.l
.
PARTS
LIST
FOR
GAME
GEAR
EUROPE
1004
REF
002
102
103
203
305
BOTTOM
NO.
CASE
PART
610-5255
610-5255-01
837-7997
837-7997B
837-7998
837-7998B
012-0206
250-6243
NO.
ASSEMBLY
DESCRIPTION
ASSY
ASSY
I C
IC
I C
I C
TAP
SUPPORT
3
BOTTOM
BOTTOM
BD
GG
BD
GG
BD
GG
BD
GG
SCR
DC-DC
DC-DC
SOUND
SOUND
PH
2*6
PLATE
CASE
CASE
GG
GG
CONV.
CONV.EUROPE
EUROPE
EUROPE
GG
01
MULTI
MULTI
EUROPE
B ( 1 )
01
QTY
( 1)
( 1)
( 1 )
B ( 1 )
( 1 )
8
1
-
0
0
"""
PROCEDURE
!.DISASSEMBLY
OF
DISASSEMBLY
AND
ASSEMBLY
OF
GAME
GEAR
PROCESS
1 :
PROCESS 2 :
PROCESS 3 :
PROCESS 4
Removing
1)
2)
3)
4)
Upset
Remove
Remove
Remove
the
Battery
screws
a
Removing
1)
2)
3)
Hold
open
Remove
the
Remove
up
condition.
the
Bottom
two
Removing
1)
Remove
from
the
Top
Removing
Board.
1)
Remove 4 screws
2)
3)
4)
5)
6)
Remove
Remove
Remove
Remove
Remove
Support
2
DC-DC
2
Sound
screw
unit.
screw
Bottom
Bottom
connector
Case.
connectors
the
Main
screws
Case.
Support
screws
Conv.
screw
Board
from
Lid.
(201
(204)
Case.
Case
Boa~d.
Plate,
(203).
Plate
(203).
(203).
Bottom
and
to
of
(two
from
Board
as
Case.
204)
the
DC
of
Sound
202
DC-.DC
Bottom
from
above.
direction
converter
Board
and
six
Conv.
Case.
Bottom
(A)
Board
fixed
203)
Board
Case.
and
and
and
make
fixed
as
Main
Sound
the
on
above.
Board
2.ASSEMBLY
PROCESS
1
PROCESS 2
Setting
Board.
1)
Set
Plate
Setting
1)
Spray
liquid.
2)
Carefully
plate
Set
3)
Set
Case.
4)
Lead
5)
Setting
Case
Case
Set
Top
Support
the
Sound
to
of
surface
and
each
LCD
cushion
Speaker
of
1
After
Take
2
Others
Clean
the
Case.
Bottom
Main
observe
Top
Button
Cable
Main
off
Main
Plate,
Board,
Case
Board.
of
inside
and
Case
and
using
Rubber
along
outside
Board.
exchange
protection
surface
Board
inside
DC-DC
DC-DC
using
clear
·
take
air
to
the
of
of
LCD
Conv.
Conv.
8
screws
away
gun
contact
place
of
LCD
film
using
and
plate
dust
Boss
along
Board
Board
(203).
with
in
clean
to
of
of
of
LCD.
air
and
and
inside
normal
Bosses
Top
gun.
to
the
Sound
Support
static
clear
place.
Case.
Bosses
proof
position.
in
Top
of
Note
6)
Fix
At
set
of
screw
the
it
dust
6
setting
as
quick
on
the
of
203
of
Main
as
possible
surface
and 2 of
Board,
of
LCD
202.
to
it
is
prevent
and
important
clear
the
plate.
to
stick
PROCESS 3 :
PROCESS 4
3)
4)
Setting
1)
Correct
and
2)
Firmly
pinch
Screwing
1)
Upset
2)
Fix
Fix
Fix
of
2
1
connector
set
cables
Bottom
the
a
screw
6
screws
Battery
Bottom
Case.
connectors
from
Bottom
in
the
Case.
unit.
(204).
(201).
Lids.
Case
edge
from
Main
to
Main
Board
Top
of
Board
Case
cases.
to
to
DC-DC
taking
Sound
Conv.
care
Board
Board.
not
to
GAME
GEAR
EUROPE
SPARE
PARTS
·,
LISTS
GAME
GEAR
SPARE
PARTS
LIST
FOR
EUROPE
No
1
2
3
4
5
6
7
Note:
R 1 :
R 2 :
R 3 :
R 4 :
PARTS
610-5212
-------------------------
610-5212-01
610-5255
------------------------
610-5255-01
253-6362
-------------------------
253-6434
509-5334-01
509-5334
509-5335
8 3
7-7
-------------------------
8 3 7-7 9 9 4 B
837-7997
837-7998
PARTS
PARTS
PARTS
PARTS
9 9 4
N
N
N
N
No.
Assy
-------------------------------------------------------
Assy
Assy
-------------------------------------------------------
Assy
CLEAR
-------------------------------------------------------
CLEAR
RUBBE
RUBBER
RUBBER
ASS
Y I C B D G G E U R 0 P E
-------------------------------------------------------
AS
S Y I C B D G G E U R 0 P E
I C
BD
I C
BD
o.
6 1 0-5 2 2 4 A S S Y G G
o.
6 1 0-5 2 2
o.
6 1 0-5 3
o.
6 1 0-5 3 5
4-
58
8-
DESCRIPTION
Top
Top
Bottom
Bottom
GG
GG
Case
Case
PLATE
PLATE
CONTACT
CONTACT
CONTACT
DC-DC
SOUND
0 1
AS
AS
0 1
AS
GG
GG
Case
Case
GG
GG
INMOLD
4P
CONV.
EUROPE
S Y G G
S Y G G
S Y G G
USA
USA
GG
GG
01
4P
1 P
MU
MU
MU
MU
01
MULTI
MULTI
(837-7995)
(837-7995B
EUROPE
L T I
L T I 0 1
L T I C 0
L T I C 0
SCA
NT
NT
01
ACT
ACT
Rl
Rz
•
-------
•
e e
--- --- -------
e e
e e
--- --- --- ----
e e e e
••
••••
e e e e
---
--- --- ---
B)
e e e e
••••
••••
TYPE
TYPE
R3
R4
•
---
•
••
0 1
GAME
EUROPE
GEAR
ACCESSORIES
LIST
GAME
GEAR
ACCESSORIES
LIST
FOR
EUROPE
No
1
2
3
4
5
6
PARTS
MK-2101-05
MK-2101-18
MK-2101-20
MK-2102-50
MK-2104-50
MK-2105-50
MK-2106-50
400-5122A
400-5122B
-------------------------
400-5127
400-5127A
No.
DESCRIPTION
TV
TUNER
TV
TUNER
TV
TUNER
GEAR
CAR
BATTERY
AV
A C
AC
TO
ADAPTOR
CABLE
AD
APT
ADAPTOR
PAC
PAC
PAC
GEAR
PAC
(PAL-I:ENGLAND)
(PAL-B:
(PAL-B:ITALY/PAL-G:GERMANY)*ZZF
CABLE
ITALY!PAL-G:GERMANY)
0 R A C 2 2 0 V
AC2 2 OV/DC 1 OV
/DC
1 0 V
1.
1.
2 A
2 A
*ZZF
APPROVAL
NOT
---------------------------------------------------------------------
AC
ADAPTOR
AC
ADAPTOR
AC2 4 OV
AC2 4 OV
/DC 1 OV
/DC 1 OV
1.
1.
2 A
2 A
APPROVAL
GAME
EUROPE
GEAR
PCB
REPAIR
PROCEDURE
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