Pioneer VSX-321-K-P Service Manual page 40

1
A
2. Notes on Disassembly and Reassembly
Confirmation of Connection
After completion of reassembly, before plugging the power cord into an outlet, make sure that the 4P wires from CN5 of
the MAIN Assy are connected to CP104 of the D-MAIN Assy.
If the unit is turned ON without these wires connected, the CODEC IC (IC602) on the D-MAIN Assy
may be damaged.
B
C
Confirmation of GND Wire
During repair, before checking the MAIN Assy, etc., with the rear chassis removed, be sure to connect the
GND terminal of the main capacitor to the chassis back (Tuner pack chassis), as shown below, then connect the
power cord.
Without grounding connection, the protection circuit will be activated.
After repairing, be sure to remove the ground wire before reassembling.
D
E
F
40
1
2
Tuner pack chassis
MAIN Assy (SIDE B)
HTP-071
2
3
D-MAIN Assy
CP104
GND wire
(Be sure to disconnect the GND wire
before reassembly.)
Main capacitor GND
3
4
4