TX-NR3007
SERVICE PROCEDURE-3
+BL
-BL
+B1L
-B1L
NFL
L
BACLA-0226
-1.1V
1.1V
-0.6V
0.6V
(From Part-8)
(To Part-7)
-60.2V
60.1V
P6010A
3
2
1
P6030B
1
2
3
4
5
R6050
2.7K
R6010
4.7K
R6020
3.3K
R6110
10K
C6000
102J
R6030
1.8K
Q6020
2SA933
R6290
(1/4W)
2.2
R6300
(1/4W)
2.2
R6250
(1/4W)
120
R6260
(1/4W)
120
Q6040
2SA949Y
Q6010
2SC1740S_S
R5230
(1/4W)
15
Q6030
2SC2229Y
R6280
(1/4W)
18
R6270
(1/4W)
18
R6310
(1/4W)
10
R6060
(1/4W)
120
R5240
(1/4W)
15
C6020
UTSP
47/50
R5260
270K
C6010
VZ47/50
R6040
1K
R6070
(1/4W)
82
R5250
68K
Q6100
TTA-004
Q6110
TTC-004
U0080
AMPLIFIER PC BOARD
IDLING
ADJ.
-B1L
+B1L
SPL
NFL
L
IPRO
VPRO
VOLH
ID-
ID+
(To Part-23)
(From Part-6)
P6240A
18pvc
1
P6030A
5
4
3
2
1
R6230
47K
R6210
47K
D6000
1SS133
R6170
33K
C6040
223J
P6070
2
1
R6400
0.47(2W)
R6410
0.47(2W)
L6000
L6010
R6080
10
R6090
10
Q6070
2SC2631
R6180
56K
R6190
10K
+60V
-60V
Q6050
TTC0002(Q)
1
Q6060
TTA0002(Q)
1
BAAMP-0192
U0021
AMPLIFIER PC BOARD
Front L
Front R
Center
Surround L
Sorround R
6. Replacing Power Amplifier Parts
When a power amplifier of certain channel is broken and goes into Protect mode, the following parts in the channel
must be replaced at the sametime, because these parts get damage in most cases.
<Note>
Idling current readjustment is necessary for after repairs.
Sorround
Back L
Sorround
Back R
Front
High L
Front
High R
BACLA-0226
BACLA-0227
BACLA-0228
BACLA-0229
BACLA-0230
BACLA-0231
BACLA-0232
BACLA-0234
BACLA-0233
Q6010, Q6020
Q6030, Q6040
Q6100, Q6110
C6010, C6020
R6050, R6070
R6250, R6260,
R6270, R6280,
R6290, R6300,
R6310
BAAMP-0192
BAAMP-0191
Q6050, Q6060,
R6400, R6410
Q6057, Q6067,
R6407, R6417
Q6053, Q6063,
R6403, R6413
Q6055, Q6065,
R6405, R6415
Q6052, Q6062,
R6402, R6412
Q6051, Q6061,
R6401, R6411
Q6054, Q6064,
R6404, R6414
Q6058, Q6068,
R6408, R6418
Q6056, Q6066,
R6406, R6416
Q6012, Q6022
Q6032, Q6042
Q6102, Q6112
C6012, C6022
R6052, R6072
R6252, R6262,
R6272, R6282,
R6292, R6302,
R6312
Q6014, Q6024
Q6034, Q6044
Q6104, Q6114
C6014, C6024
R6054, R6074
R6254, R6264,
R6274, R6284,
R6294, R6304,
R6314
Q6018, Q6028
Q6038, Q6048
Q6108, Q6118
C6018, C6028
R6058, R6078
R6258, R6268,
R6278, R6288,
R6298, R6308,
R6318
Q6016, Q6026
Q6036, Q6046
Q6106, Q6116
C6016, C6026
R6056, R6076
R6256, R6266,
R6276, R6286,
R6296, R6306,
R6316
Q6011, Q6021
Q6031, Q6041
Q6101, Q6111
C6011, C6021
R6051, R6071
R6251, R6261,
R6271, R6281,
R6291, R6301,
R6311
Q6015, Q6025
Q6035, Q6045
Q6105, Q6115
C6015, C6025
R6055, R6075
R6255, R6265,
R6275, R6285,
R6295, R6305,
R6315
Q6017, Q6027
Q6037, Q6047
Q6107, Q6117
C6017, C6027
R6057, R6077
R6257, R6267,
R6277, R6287,
R6297, R6307,
R6317
Q6013, Q6023
Q6033, Q6043
Q6103, Q6113
C6013, C6023
R6053, R6073
R6253, R6263,
R6273, R6283,
R6293, R6303,
R6313
Refer to “
SCHEMATIC DIAGRAMS-1
AMP1 (VOLTAGE POWER AMP) SECTION”
[e.g.]
In case Front Lch
Refer to “
SCHEMATIC DIAGRAMS-2
AMP2 (FINAL STAGE) SECTION”
BACLA-0226, BACLA-0229, BACLA-0231 and BACLA-0233 are electrically and mechanically full-compatible with each other,
but idling current readjustment is necessary
.
BACLA-0227, BACLA-0228, BACLA-0230, BACLA-0232 and BACLA-0234 are also electrically and mechanically full-compatible
with each other,
but idling current readjustment is necessary.
