SD-AS10
2 – 8
Resistor RA415 voltage drop is much.
Circuit
QA400 drive circuit
.
QA424 ON > QA408 ON > +D5V is supplied to QA423 BASE >
QA423 ON > QA420 ON > ICA100 RESET (21 pin) low > SLA5515
output FET OFF > Short current OFF.
QA423 ON > Pull QA408 BASE current – – – This circuit is latch.
When QA424 change off, this latch circuit keep “QA408 ON &
QA423 ON”.
So, “QA420 ON > ICA100 RESET (21 pin) low > SLA5515 output
FET OFF > Short current OFF” is keeped.
Then
µ
com detect “1-BIT PROTECT” by QA410 or QA420 and
change into power off mode.
This circuit work is controlled by QA427 & QA411.
+D5V is supplied at speaker relay on only. Because prevent fault
action.
Circuit
protect response is faster than
µ
com “1-BIT PROTECT”
detection.
µ
com “1-BIT PROTECT” detection expend long time.
6. When set temperature rise, circuit
work to drive circuit
QA412.
QA412 ON > QA413 ON >
µ
com detect “PROTECT” >
µ
com
change into power off.
<Attention>
: Don’t mistake capacitor CA193, CA192 0.001
µ
F.
When capacitance is more large, response is delay.
Can’t PROTECT IC.
/
: Confirm fault action at high temperature aging.
Don’t work at aging.
This circuit work at abnormal condition.
: Confirm work at (L-) or (R-) short to chassis.
: Confirm work at short after speaker relay on.
Confirm latch circuit – – – We already confirmed this circuit by your
DC voltage information (Result is OK).
2
5
5
3
6
1
3
6
4
5
33K
KTA1504 GR
5.6K
5.6K
5.6K
5.6K
1 2
3
2
1
3
KDS121E
KDS120E
RA148
RA146
RA147
RA149
QA409
RA354
DA337
DA336
DA338
1
-1
1
1
-2
560
0.1
1K
560
KTA1504 GR
(2W)
QA400
RA415
RA409
RA406
RA412
2
2.7K
2.2K
RA437
PSA405
RA436
3
D+5V
10/16
KRC104
S
KRC102
S
4.7K
KDS160
4.7K
0
2
3
1
1
2
3
QA422
RA480
RA474
CA414
DA408
RA481
QA421
4
KRC104 S
0.0022
0.01
KRA102
S
KRC102
S
KRA102 S
0.047
4.7K
100/16
KRC102 S
KDS160
4.7K
KDS160
4.7K
0.1
SP_RELAY
D_GND
1
3
2
1
1
1
2
3
2
3
2
3
1
2
3
QA408
QA423
QA424
RA483
DA412
DA411
RA482
CA419
CA418
CA420
CA416
QA411
RA484
QA427
CA422
5
D_+5V
KTA1504
GR
1K
KRC102 S
10K
47K
1K
10K
0.1
+B
PROTECT
2
3
1
QA413
CA421
RA487
RA485
QA412
RA490
RA489
RA488
6
Содержание SD-AS10
Страница 24: ...SD AS10 3 9 ASSEMBLY SEQUENCE 1 FIX ITEM 148 157 TO ITEM 115 148 157 115 5 ...
Страница 45: ...SD AS10 3 30 120 ASSEMBLY SEQUENCE 1 FIX ITEM 158 TO ITEM 120 THEN FIX WITH ITEM 160 158 160 26 ...
Страница 49: ...SD AS10 3 34 ASSEMBLY SEQUENCE 127 1 FIX ITEM 127 TO MAIN CHASSIS ASSY 2 FIX ITEM 168 TO M C RESET ARM 168 30 ...
Страница 50: ...SD AS10 3 35 178 ASSEMBLY SEQUENCE 1 FIX ITEM 178 TO MAIN CHASSIS ASSY 31 ...
Страница 51: ...SD AS10 3 36 145 ASSEMBLY SEQUENCE 1 FIX ITEM 145 TO MECHA HOLDER ASSY SCREW HALF WAY ONLY TIGHTEN IT 32 508 ...
Страница 53: ...SD AS10 3 38 M E M O ...
Страница 75: ...SD AS10 5 4 6 6 ...
Страница 186: ... M E M O SD AS10 ...
Страница 187: ... M E M O SD AS10 ...