P202A
P201A
DESIGNED BY:HANSONG M25 TEAM 2005/08/08
VM 1.0
F201&F202 ARE T1.6AL/250V
F203&F204 ARE T1.6AL/250V
C21 0
F20 3
BR202
b
HS21 4
HS20 5
e
be
NAD M25 THX SEVEN CHANNEL AMPLIFIER
Q208
Q207
R296
C274
R2A 2
R2A 3
D215
HS206
D224
R2F3
G2G1
ACIN
ISEN
DGND
6
ACOUT
P20 7 A
+5VD
RELAY
BR208
~
1
-
~
+
C255
C227
C22 8
C26 5
R21 5
IC206
C26 6
R2E9
R21 3
R21 4
C26 2
R216 C230
b
D201
e
Q234
R21 2
Q205
R251
R25 2
C258
Q228
R253
b
C26 3
R2F5
Q227
b
R2F4
D23 0
R2F6
e
R25 4
e
R2F2
D23 1 D223
R2F1
IC205
C219
C22 0C21 6
R20 8
R206 R204 R202
b
Q204 C218
C217C21 5
HS20 4
R207 R205
e
Q202
R203 R201
e
b
Q203
Q209
D233
C27 6 R2 H4
D235
R219
R2H2
C231 R220 C236
C27 7
D234
C238
R2H3
D236
C239 C237
C232
C23 4
R225
R25 0
C23 3
R22 3
R22 4
R222
D20 3
R21 8
Q240
R221
R217
C229
D20 2 D2 3 2
D205
R227
C226
D204
b
C235 R226
e
Q241
b
R211
Q206
Q235
e
UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE
REPLACE ONLY WITH SAME TYPE FUSE AND RATING
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE
ATTENTION:
The tw o links shoul d b e short ed
BUS202
and should be resumed after
during the test for8ohms load
C261
R27 5
C206
HS213
Q220
C207
IC202
IC201
Q219
HS21 2
D208
R27 8
C269
R267
R2A 9
R279
W201
D21 1
R28 3
W202
HS20 2
D209
C270
BUS205
C20 9
C208
CAUTION:
C275
D214 D213
D222
HS20 1
HS20 3
Q201
BUS204
BUS206
BUS201
C20 5
C20 4
-
~
+
~
BR201
C20 1
C20 3
C20 2
ACOFF
P203A
J202
J203
the te st.
AGND1
FAN1
FAN2
FAN3
-70 V
+70V
+18V
-18 V
DG ND
R2H1
R259
R299
SEN1
SEN2
SEN7
SEN6
SEN3
SEN4
NC
SEN5
P205B
ISCTRIG_1
ISCTRIG_2
ISCTRIG_3
ISCTRIG_6
ISCTRIG_4
ISCTRIG_5
DG ND
ISCTRIG_7
Q222
be
R260
Q232
R28 1
b
R258
e
b
e
Q221
R210
b
R280
e
Q231
R20 9
R29 7
be
Q225
R298
Q226
be
b
R294
e
b
R29 5
Q223
e
Q224
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE
REPLACE ONLY WITH SAME TYPE FUSE AND RATING
UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE
D207
PROT5
ATTENTION:
CAUTION:
R27 0
R26 1
D228
C256
C268
R2A 4
D229
IC203
DGND
DGND
HS21 1
P20 6 B
PROT6
PROT7
PROT5
STBYLED
+5VD
R28 2
R276
R26 3
C257
Q218
R277
D21 0
D220
C273
R27 3
C271
C259
R264
R2E6
R2A 7
R2A 1
D225 D221
R266
R2E1
R27 4
R26 5
R2A 5
R27 1
R2A 8
C26 0
C272
R2E8
D216
R2E3 R2E4
R2E7
Q233
D21 7 D2 1 8
D226
R2E5
TL084
C26 4 R2A 6 R26 8
D219
R287
R2E2
R28 8
R26 9
R27 2
R28 9
74HC21
R290
IC204
R28 5 R293
PROT4
PROT4
PROT3
PROT3
PROT2
SCLED
R26 2
D227
PROT1
+12VD
SCLED
STBY
+8V
STBY
+8V
PROT4
PROT3
PROT5
PROT2
PROT1
PROT6
PROT7
P204B
DGND
DGND
SCLED
DGND
C267
R29 1
D212
RV201
R29 2 R2 8 4
DGND
TP1
R28 6
J201
C290
C254
C21 4 C22 5
C22 3
C248
W204
C22 2
R240
C24 0
HS207
R238
Q212
R233
R235
C21 1 C212
C213 C224
Q210
W203
be
b
e
C247
R23 2
Q211
b
R234
e
Q213
R239
b
C245
e
C243
Q236
R236
R237
C244
BR205
C246
Q237
+
~
-
~
+
~
-
~
BR203
C22 1
b
BR206
Q214
R242
b
Q216
R247
b
e
C253
R241
R243
e
Q217
R245
Q215
b
e
e
C25 2
R249
C25 0
Q239
BR207
R24 4
R24 8
BR204
C249
C251
R246
Q238
P20 8 B
HS209 HS210
C24 2
R25 7
BUS203
F204
P209B
2005/08/08
F201 F202
R25 5
R22 8
R229
HS208
b
R230
Q230
e
R256
R23 1
b
e
Q229
D206
C24 1
PCB LAYOUT
PSU BOARD - COMPONENT SIDE
PSU BOARD - SOLDER SIDE
-18-
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