Pioneer PDP-502MX Service Manual page 66

1
PDP-502MX, PDP-502MXE
Protection Circuits
MAIN POWER ASSY
A
X DRIVE ASSY
+12V OCP
R3438
R3437 R3439
5.6k 5.6k
C3424
B
Q3405
Q3406
D3408
UCOM ASSY
C
AUDIO AMP ASSY
AUDIO P.D.
D
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1
2
+B OVP
VF OVP +8V UVP
VADR UVP
+3.3V OVP
2
3
AC200V P.D.
+12V UVP
VADR VSUS UVP
OVP
+3.3V UVP
+5V OVP
3
4
+14V
–8V UVP +14V
UVP OVP
VSUS OVP
+5V UVP
4