Sony CDX-GT490U / CDX-GT490US / CDX-GT494U / CDX-GT49UM Service Manual ▷ View online
CDX-GT49UM/GT490U/GT490US/GT494U
8
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-1. SUB
PANEL
ASSY
(Page
9)
3-2. CD MECHANISM BLOCK
(Page
(Page
9)
SET
3-3. MAIN
BOARD
(Page
10)
3-5. CHASSIS (T) SUB ASSY
(Page
(Page
11)
3-6. ROLLER ARM ASSY
(Page
(Page
11)
3-7. CHASSIS
(OP)
ASSY
(Page
12)
3-8. CHUCKING ARM SUB ASSY
(Page
(Page
12)
3-9. SLED
MOTOR
ASSY
(Page
13)
3-10. OPTICAL PICK-UP SECTION
(Page
(Page
14)
3-11. OPTICAL PICK-UP
(Page
(Page
14)
3-4. SERVO
BOARD
(Page
10)
CDX-GT49UM/GT490U/GT490US/GT494U
9
Note: Follow the disassembly procedure in the numerical order shown below.
3-1. SUB PANEL ASSY
3-2. CD MECHANISM BLOCK
2
two claws
3 two claws
4 sub panel assy
1 two screws
(+PTT
2.6
u 6)
4 CN701
3
1 screw
(+PTT
2.6
u 6)
2 screw
(+PTT
2.6
u 6)
6 two screws
(+PTT
2.6
u 4)
7 bracket (CD)
8 CD mechanism block
5 CN501 (3P)
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)
Click on the first or last page to see other CDX-GT490U / CDX-GT490US / CDX-GT494U / CDX-GT49UM service manuals if exist.