Rv-B550Bu - JVC RV-B550BU Service Manual

<CD unit assembly>
Removing the microcomputer board
1. Disconnect the card wire from connector CN251 and
CN252 on the key switch board on the front side of
the CD unit assembly.
2. Remove the four screws J attaching the microcomputer
board on the underside of the CD unit assembly.
3. Disconnect the card wire or the harness from
connector CN601, CN602 and CN907 on the
microcomputer board respectively.
Removing the key switch board
Prior to performing the following procedure, remove
the microcomputer board.
1.
Release the four tabs a
function buttons and the three tabs b by the key
switch board.
Push tabs a and b in the directions of the arrows
carefully not to damage the function buttons
2. Remove the six screws K attaching the key switch
board.
3. Pull out the key switch board from two tabs c.
(See Fig.12 and 13)
Microcomputer board
(See Fig.14 and 15)
fixing the right and left
CN252
Microcomputer board
J
CN601
J
CN602
a
Push Push Push
b
Push Push Push
Key switch board
Function switch buttons
(power)
K
c
Key switch board

RV-B550BU

Key switch board
CN251
Fig.12
J
CN907
J
Fig.13
a
Push Push Push
Push Push Push
Push
b
Function switch buttons
(volume)
Fig.14
K
c
Fig.15
a
1-9