VSX-AX4AVi-S
237
5
6
7
8
5
6
7
8
C
D
F
A
B
E
9
Short circuit between pin8 (POSI_1) and pin 9 (GND), between pin7 (POSI_2) and pin 9 (GND) of CN5701 of the POWER PROTECT
Assy, and Pin 3 (POSI_1) and pin 4 (GND) of CN5702 .
10
Turn the power on. (The power is on without the protection circuits activated.)
After performing a diagnosis, be sure to remove the solders at short circuit points. Also, be sure to
discharge the electric charges of the VH line (charges of the electrolytic condenser) before putting
the Power Amp Block back. (See "1. Before the Power Amp Block is removed.")
Note:
If you connect the connectors without discharging, some parts, such as a resistor or Fuse
IC on VH line, may be damaged by the inrushing current.
Diagnose
Warning: Before putting the Power Amp Block back
9
9
CN5701
CN5702
POSI_1
POSI_2
POSI_1
GND
GND
POWER PROTECT
Assy
9
POWER PROTECT
Assy
P
P