Pioneer PDP-502MX Service Manual page 43

5
T202
ATK1128
Q201
SW Tr
(2SK2847)
VSUS TRANS
T201
ATK1128
5
4
3
2
3
VSUS TRANS
IC201
1
3
1
Error
4
2
AMP
T301
ATK1129
5
4
3
2
mp
1
VADR TRANS
r
IC301
2 3
3 4
Trig (-V)
T351
ATK1130
Q351
SW Tr
(2SK2847)
3
4 5
CC CONT
3
2
7
Comp
IC351
2
3
1
4
Error
2
AMP
1
3
1
14V
STB +12V
UVP
MUTE
at P.ON
Q408
D413
+
5
6
VSUS Discharging R
R228 R227 R226 R262 R263 R264
170V
+
D202
Q202
1 3 5
One Shot
IC204
OTL CONT
(A) ASSY
10V
SUS
GND
R208
2
D206
1
60V
+
DisCharge
Q302
Q207, Q206
D302
R315
1 3 5
One Shot
IC304
OTL CONT
ADR
(B) ASSY
GND
2
1
IC302
+
12V Q354
12V
D.GND
UVP
D373
-8V
1 3 5
8V
One Shot
IC354
14V
OTL CONT
(C) ASSY
D355
14V up
VR356
14V Adj
UVP
6
D213 D212
IC403
IC405
6
7
VR201
5
Q416
VSUS
Adj
VSUS
UVP
UVP MUTE
Q212
Q213
Mute
Q205,
D427
VADR
UVP
VR301
Q304
Q416
VADR
Adj
IC404
D305
Vadr up
12V
D432
D451
Q421
Q435
Q422
-8V UVP
R358
Q420
14V
UVP
8V UVP
IC352
R358
IC402
R357
R360
7
PDP-502MX, PDP-502MXE
TP201
VSUS
P5
(170V)
1
2
VSUS+10V
4
6
Q415
SUS
GND
7
ADR
GND
VADR 8
OVP
TP301
VADR
D205
(60V)
VSUS
UP
14V
UP
Q417
A.GND
TP351
-8V
TP352
+8V
TP355
+14V
VADR
OVP
D.GND
14V
Q419
D434
R443
14V OVP
-8V
8V
14V
UVP
OVP
1
2
3
4
D.GND
7
8
A
P6
B
12
11
-8V
7
8V
6
5
2
14V
1
6
12V
1
11
P4
C
TP353
+12V
14V
-8V
10
9
7
14V
D
5
3
2
1
12V
P3
43
8