Pioneer VSX-LX70 Service Manual page 71

5
9
Short circuit between pin8 (POSI_1) and pin 9 (GND) of CN5701 of the POWER PROTECT Assy, and Pin 3 (POSI_1) and pin 4 (GND),
and Pin5 (POSI_2) and pin 4 (GND) of CN5702 .
9
GND
POSI_1
CN5701
10
Turn the power on. (The power is on without the protection circuits activated.)
POWER PROTECT
Assy
Diagnose
Warning: Before putting the Power Amp Block back
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 "7. DISASSEMBLY / 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.
5
6
POWER PROTECT
Assy
9
POSI_1
GND
POSI_2
9
CN5702
VSX-LX70
6
7
7
8
A
B
C
D
E
F
71
8