50
VSX-1128-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
8.4 IDLE CURRENT ADJUSTMENT
SL ADJ
SL (
+)
SL (
+)
S
L
(-)
C ADJ
C(+)
C ADJ
SR
(-
)
SBR ADJ
SBR
(
-)
FL ADJ
FL (-)
S
B
L (-)
SL(
+)
SL ADJ
FL (+
)
FL ADJ
C(-)
SR(+)
FR ADJ
FR (+
)
FR (-)
FR ADJ
SBL ADJ
SBR ADJ
SR ADJ
SR ADJ
SBL ADJ
SBL (
+)
SBR
(
+
)
J4
7
4
J4
6
0
J5
3
5
J4
4
1
R630
R673
J583
J5
1
8
TP401
VR404
TP404
VR403
VR405
J4
9
2
TP405
R456
TP402
R629
TP406
VR407
R672
VR401
J4
0
9
J5
0
0
R457
TP407
TP403
VR402
VR406
C
412
560P
C5
2
4
-
D4
4
4
-
R7
1
7
-
C5
2
3
-
R4
0
9
150K
R461
NM
R470
NM
R416
22K
R
436
470K
C408
22/50
R427
1K2
R
437
22K
R428
1K5
ZD
401
MTZ5.1A
C5
2
2
10/50
R
441
1K2(1)
R440
150
2N2-K
C413
C405
NM
KSA992F
Q407
R401
1K2
R434
-
R429
33K
C5
6
8
47P-J
C406
22P-500V
R4
4
3
47(1)
Q412
KTC3206Y
R4
3
5
560
2K
7
R
432
1
N
414
8
D4
0
4
ZD402
MTZ4.3B
D4
0
3
1
N
414
8
R4
0
4
7K5(1)
C4
0
2
100P-500
V
C5
8
2
-
!
R4
2
4
0R47(2)
R4
2
5
0R47(2)
C5
8
1
-
R4
1
3
10K
R4
1
4
10K
1
3
2
TP401
R417
270K
R4
2
6
5K6
C4
0
9
SL
-
-
R7
2
4
C4
0
1
100
N
-K
R
406
D
H
PTHF 160
8
471P
R412
47K
R419
22K
SL
SL_I
N
R4
1
0
JU
MP
E
R
C409
82P-50V(1608)
C
410
100/50(
8
*1
1
.5
)
D4
4
3
-
R4
3
8
1K1
C
411
-
VR401
1K(B)-V
ZD
403
MTZ4.3B
C4
0
7
47/50(6.3*
11)
7K5(1)
R4
0
8
C4
1
4
100P-500
V
!
R
431
0R47(2)
R
430
0R47(2)
C
415
10/100(6.3*
11)
R
420
-
AGND
C6
1
9
8
2P-J
C5
6
7
47P-J
R4
0
2
100K
R
442
JU
MP
E
R
R
433
-
R710
270
C435
-
KTC3964
Q409
R4
2
2
-
KSA992F
Q408
C404
47/50(6.3*11)
R7
0
3
2K7
Q410
2SB1560
R439
100(1)
!
R415
100(1)
R423
10K
D402
1N4148
!
!
Q406
2
N
5551S
C525
-
2SD2390
Q404
!
!
C
416
10/100(6.3*
11)
150K
R411
Q403
2N5401S
Q401
KTA1024Y
(SL)
(SL)
• Adjustment points and measurement points.... see fig.1.
AMP7 ASSY
Fig.1
K
Adjustment
Points
Procedure
Measurement
Points
Channel
TP404 pin 1 (+)
TP404 pin 3 (–)
1
Turn on the power.
2
Perform aging for one minute.
3
Connect a digital voltmeter to the measurement point.
4
Turn the adjustment VR so that the voltage becomes
in 2.0 mV ± 0.2 mV.
(Condition : No signal and no load)
VR404
TP402 pin 1 (+)
TP402 pin 3 (–)
VR402
TP403 pin 1 (+)
TP403 pin 3 (–)
VR403
TP401 pin 1 (+)
TP401 pin 3 (–)
VR401
TP405 pin 1 (+)
TP405 pin 3 (–)
VR405
FL
FR
C
SL
SR
TP406 pin 1 (+)
TP406 pin 3 (–)
VR406
TP407 pin 1 (+)
TP407 pin 3 (–)
VR407
SBL
SBR
SIDE A
SL_VR401
FL_VR404
SR_VR405
FR_VR402
SBL_VR406
SBR_VR407
C_VR403
SL_TP401
FL_TP404
C_TP403
SR_TP405
FR_TP402
SBL_TP406
SBR_TP407
When any component parts which are within the red square on the following circuit diagram are replaced, the idle current
adjustment of that channel is required. (Idle current adjustment for another channel is not required.)
However, when any capacitors are replaced, the adjustment is not required.
(The following circuit diagram is for SL channel, but another channel also has same circuit diagram and same adjustment is
required)
Содержание Elite VSX-70
Страница 11: ...11 VSX 1128 K 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 34: ...34 VSX 1128 K 1 2 3 4 A B C D E F 1 2 3 4 2 TEMP Protection Circuit CPU ASSY J AMP7 ASSY K AMP7 ASSY K ...
Страница 51: ...51 VSX 1128 K 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 75: ...75 VSX 1128 K 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 107: ...107 VSX 1128 K 5 6 7 8 5 6 7 8 A B C D E F A SIDE B CP3 CP1 CN3 CN2 CN5 CN1 ...
Страница 119: ...119 VSX 1128 K 5 6 7 8 5 6 7 8 A B C D E F C2916 I SIDE B SIDE B I AUDIO ASSY CP17 CP18 CP12 CP13 CP15 CN2103 ...
Страница 122: ...122 VSX 1128 K 1 2 3 4 A B C D E F 1 2 3 4 J SIDE B J CPU ASSY CN310 CN308 CN309 CN305 CN304 CN306 CN301 Q31 Q31 ...