Disassembly; Vsx-324-K-P - Pioneer HTP-072 Service Manual

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7. DISASSEMBLY

7.1 VSX-324-K-P

Note:
Even if the unit shown in the photos and illustrations in this manual may differ from your product, the procedures
described here are common.
Some connections of the housing wires or connectors may be tight. When disconnecting those wires or
connectors, be careful not to damage them.
1. Discharging
[1] MAIN Assy Capacitor (C55, C58)
[Procedures]
(1) Unplug the power cord.
(2) Disconnect the 10P connector from CP3 of the MAIN Assy between CN204 of the AMP6 Assy.
In case of VSX-323, also disconnect the 6P connector from CP8 of the MAIN Assy.
(3) Connect B+ and B– terminal of the D7, using resistor leads with 47 - 100 ohms (2 W or higher), for discharging.
∗ Discharging time: 30 - 60 seconds, depending on the level of resistance.
(4) Check that the voltage between the B+ and B– terminals is less than 1 V, using a tester.
∗ Be sure to connect the GND terminal of the tester to the chassis.
∗ If the voltage is still 1 V or higher, repeat Step (3).
HTP-072
CP3
MAIN Assy
[2] FL-30 V Capacitor (MAIN Assy C101)
[Procedures]
(1) Unplug the power cord.
(2) Connect pins 24, 25 (–30V) of the CN704B and GND on
the CPU Assy,
using resistor leads with 47-100 ohms (2 W or higher),
for discharging.
∗ Discharging time: 5 - 10 seconds, depending on the
level of resistance.
(3) Check that the voltage between the –30V terminal is less
than 1 V, using a tester.
∗ Be sure to connect the GND terminal of the tester to
the chassis.
∗ If the voltage is still 1 V or higher, repeat Step (2).
5
6
VSX-323
CP8
CP3
MAIN Assy
CN704B
HTP-072
6
7
C58 C55
B– B+
D7
47 - 100 ohms
(2 W or higher)
47 - 100 ohms
(2 W or higher)
CPU Assy
GND
−30V
7
8
A
B
C
MAIN Assy
D
E
F
31
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