No.51881
AV28BT5ENS / AV28BT5ENB
AV28BT5EES / AV28BT5EEB
6
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Remove the
8
screws marked
A
.
2. Withdraw the rear cover toward you.
REMOVING THE HEADPHONE JACK BOARD
ASS’Y
z
After removing the rear cover.
1. Remove the
1
screw marked
B
.
2. After pulling JACK BOARD back, it shifts rightward.
REMOVING THE SPEAKER
z
After removing the rear cover.
1. Remove the
2
screws marked
C
, and remove the SPEAKER BKT
ASS’Y.
2. Remove the
4
screws marked
D
, and remove the SPEAKER BKT
COVER.
3. Remove the
4
screws marked
E
, and remove the SPEAKER.
REMOVING THE MAIN PWB & PROCEDURE TO
DEVELOPMENT
z
After removing the rear cover.
1. Remove the JACK BOARD ASS’Y.
2. Remove the LEFT SPEAKER BKT ASS’Y.
3. Remove the POWER SUPPLY TRANSFORMER.
4. Remove the
2
screws marked
F
atached to the MAIN PWB
ASS’Y.
CAUTIONS)
Be careful enough when developing a main chassis. The wire
of a POWER TRANSFER does not separate and short-circuit
with other parts.
REMOVING THE FRONT CONTROL PWB
z
After removing the rear cover.
1. Remove the MAIN PWB ASS’Y.
2. Remove the
6
screws marked
G
, and remove the FRONT
CONTROL PWB.
REMOVING THE POWER SW
z
After removing the rear cover.
1. Remove the MAIN PWB ASS’Y.
2. Remove the
2
screws marked
H
, and remove the POWER SW.
A
REAR COVER
B
HEADPHONE JACK
C
SPEAKER BKT
D
SPEAKER BKT
SPEAKER
E
F
G
FRONT CONTROL PWB
H
POWER SW
(×8)
(×2)
(×4)
(×4)
(×6)
(×2)
(×2)
