Pioneer SC-LX85 Service Manual page 68

5
[3-2] Diagnosis
Note 1: Rear Section should be set diagnosis
condition with extention jig cables.
Refer to the "[2-2] Diagnosis" of "[2]
Rear Section".
Disconnect the two pair board to board
extension jig cables (GGD1761) and
remove the PRE BRIDGE ASSY.
(Refer to the steps (5) to (4) of "[2-2]
Diagnosis".)
Note 2: If the IR BUFFER ASSY is removed, the
connectors of IR INTERFACE ASSY
may be loosened.
Attach the connectors securely.
(1) Temporarily attach the IR COVER 85 to the
Rear Panel 57U, using the three screws
(ABA1011).
(2) Attach the PRE BRIDGE ASSY.
(3) Connect the two connectors and attach the
FRONT BRIDGE ASSY.
(4) Connect the two pair board to board
extension jig cables. (GGD1761)
(IR INTERFACE CN3801 <-> IR BUFFER CN6802)
(IR INTERFACE CN3802 <-> IR BUFFER CN6803)
5
6
IR INTERFACE ASSY
IR POWER AMP ASSY
Front
1
1
23P + 23P board to board
extension jig cable (GGD1761)
4
3
x 2
FRONT BRIDGE ASSY
Front
SC-57
6
7
1
PRE BRIDGE ASSY
2
CN6803
CN6802
IR BUFFER ASSY
CN3802
IR INTERFACE ASSY
CN3801
7
8
A
B
C
D
E
AUDIO ASSY
F
59
8