Sony CDX-GT490U / CDX-GT490US / CDX-GT494U / CDX-GT49UM Service Manual ▷ View online
CDX-GT49UM/GT490U/GT490US/GT494U
10
3-3. MAIN BOARD
3-4. SERVO BOARD
9 MAIN board
insulating sheet
3
2 two screws
(+PTT
2.6
u 8)
1 three screws
(+BTT
2.6
u 5)
7 screw
(+PTT
2.6
u 10)
8 heat sink
4 two screws
(+P
2.6
u 8)
6 screw
(+P
2.6
u 8)
5 two screws
(+PTT
2.6
u 10)
7
SERVO board
SERVO board
3
toothed lock screw
(M
1.7
u 2.5)
2
toothed lock screw
(M
1.7
u 2.5)
1
Remove the eleven solders.
6
optical pick-up (16 core)
(CN101)
4
claw
5
claw
gray
yellow
blue
orange
red
black
red
white
black
red
white
CDX-GT49UM/GT490U/GT490US/GT494U
11
3-5. CHASSIS (T) SUB ASSY
3-6. ROLLER ARM ASSY
4 chassis (T) sub assy
3 claw
1 two screws
(M
1.7
u 2.5)
2 two screws
(M
1.7
u 2.5)
3 washer
4 gear (RA1)
6 roller arm assy
5
1 spring (RAL)
2 spring (RAR)
CDX-GT49UM/GT490U/GT490US/GT494U
12
3-7. CHASSIS (OP) ASSY
3-8. CHUCKING ARM SUB ASSY
7 two coil springs (damper) (natural)
8 coil spring (damper) (green)
6 chassis (OP) assy
5
1 tension spring (KF)
2 gear (LE1)
3 lever (D)
4 slider (R)
3 chucking arm sub assy
2
1 spring
Note: Have this portion receive the chassis.
Note: Have this portion receive the chassis.
Note: Be careful not to touch the turn table.
CDX-GT49UM/GT490U/GT490US/GT494U
13
3-9. SLED MOTOR ASSY
3 sled motor assy
sled motor assy
1 spring
spring
stand
stand
turn table
2 three serration screws
(M
2
u 3)
three serration screws
(M 2
(M 2
u 3)
Note: Place the stand with care not to touch the turn table.
Note:
Never remove these parts since they were adjusted.
Never remove these parts since they were adjusted.
bearing (R)
bearing (F)
Note for Assembly
Note: Take care to prevent the chassis from being bent
when tightening the three machine screws.
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