Kenwood KRF-V8010D Service Manual page 19

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DC VOLTAGE FOR IC3 (STK411-230D)
PIN No. A C D B
DESTINATION 1 2 3 4 5 6 7 8 9-11 12-15 16 17 18.19
E,T 54.9V 22.0V 22.5V 14.5V -14.2V -22.2V -54.9V -21.7V -52.7V 53.2V
Q
54.0V 0V 23.2V 23.7V 15.8V -15.7V -23.7V -53.9V -23.2V 0V -51.6V 52.1V 0V
X 64.0V 64.0V 35.5V 27.3V -27.4V -35.4V -63.9V -34.8V -61.6V 62.1V
P1
W128
B
65V 65V
+65V +65V
B B
+B +B
+37V
37V
R302 1K C282
R301 1K C281 10P
R300
10P
A A -4.1V
R299 56K
Q31
56K
A -2.5V C266
+ +
Q36 A -3.5V 2.2u50
R47
+
+ R260
A
10K -3.0V
C27
Q1
150P
+
R259
R34
47K
C265 R373
B +5.2V
2.2u50
B +4.5V B
+
Q32
65V
+15V
+65V
65V
37V
+37V
15V
31V
AR AS
DC VOLTAGE FOR IC4 (STK410-030D)
PIN No. A C D B
18,19
20 21-23 DESTINATION 1 2 3 4 5 6 7 8 9-11 12-15 16 17
-51.5V E,T 54.9V 21.9V 22.5V 14.4V -14.5V -22.5V -54.9V -22.0V -52.6V 53.2V -51.4V
Q
-50.2V 0V 54.0V 0V 23.2V 23.7V 15.8V -15.7V -23.7V -53.9V -23.2V 0V -51.6V 52.1V 0V -50.2V
-60.4V X 64.0V 34.9V 35.5V 27.5V -27.4V -35,5V -63.9V -34.5V -60.9V 61.4V -59.7V
IC4 POWER IC (C, SL, SRch)
D13
W56
B B
D14
+
+65V
R303
B
56K
+B
R304
C283 56K
W63
R305 1K 15P
+ + C284
R306 1K 15P
C28
+
150P
Q9-13
+ +
MUTE
R374 R375 C271
1K R258 R261 1K 2.2u50
2.2K 2.2K +
R263 R267
0.7V
Q11
1K 1K 1K
Q10 0.7V
0.7V
0.7V Q12 R264
Q9
1K 1K
R257 0.7V
Q13
R262 C272
1K 2.2K
2.2K R376 2.2u50
+
1K
R377
R265 2.2K 1K
+15V
+65V
65V
37V
+37V
15V 15V
31V
AT AU AV
+ + ON:4.4V
Q34
OFF:0V
Q24
0V Q26
0V
A -1.7V Q35
Q25
20 21-24 25 26 A -1.5V
0V
ON:0V
R31
-22.0V Q23 OFF:24.4V
3.3K
0V -23.2V 0V
PROTECTION
+
-34.9V
K1
Q17-21
CURRENT
A
LIMMITER
R311 R379
0.1 2W 22
L1
FLch
3uH
ON:4.4V
0V R317 Q29
OFF:0V
470
Q17
8
A -1.7V
ON:0V
OFF:24.4V
R318
470
Q18
K4
0V
L2
3uH
FRch
R312 R380
0.1 2W 22
R325 R381
0.1 22
2W
L3
ON:4.4V
SLch Q27
OFF:0V
3uH
0V 7
R331
ON:0V
Q19 OFF:24.4V
470
A -1.7V
R332
K2
470
Q20
0V
L4
3uH
SRch
R326 R382
0.1 2W 22
B
ON:4.4V
Q28
OFF:0V
9
ON:0V
OFF:24.4V
A -1.7V
0V
+65V R365 K3
470
L5
R307 Q21
56K 3uH
Cch
C285 R309 R339 R383
15P 1K 0.1 22
2W
+
C301 R341
0.1 4.7 1/4W
+65V
+
R15
R293
56K 65V 51K +
R18
4.7 1/4W
65V
+ B +0.4V D8 D9
R27 R28 R35
+
-31V AVR
+
C18
22u63 R16 R4
-32.0V
+ 27K 27K
Q2
-31.5V C19 47u35
+
37V
+37V
15.0V
+15V +15V
+65V +
65V IC1
37V
+37V
+
IC2
15V 15V
-14.8V
31V
+B
B
Published in Heiloo, Holland.
AW AX AY
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended
parts (refer to parts list).
J4
replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or
R343
1 Cch
resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply
R346
8,2K circuit) before the appliance is returned to the customer.
FRONT
A SP
R344
ON/OFF 620
2 SWch
The DC voltage is an actual reading measured with a high impedance type voltmeter with a cassette loaded
PRE OUT
R347
at playback mode. The measurement value may vary depending on the measuring instruments used or on
3 SLch
the product. Bias circuit DC voltage is measured while in the record mode.
4 SRch
J5
1 Rch
C, SWch
ON/OFF
FRONT
A SP. H
2 Lch
CN2
3 Cch
CENTER SP.
FRONT
B SP
ON/OFF
J6
1 Rch
POWER
ON:0V
D9
FRONT OFF:16.1V
B SP.
2 Lch
CN4
+5.6V +5.6V
1
SL, SRch
D. GND 2
ON/OFF
3 RSch I F. OFF 3 Q2 ON:0.7V
OFF:0V
POWER 4
SURROUND D. GND 5
SP.
4 LSch POWER ON/OFF
KRF-V8010D (X00-291X-XX)
DESTINATION
UNIT No.
COUNTRY ABB.
EUROPE E
T1
POWER TRANSFORMER U.K. T
D1 CN1
AUSTRALIA X
RED
+65V 1
1 1
A
KRF-V8010DW (X00-2912-71)
B DESTINATION
UNIT No.
COUNTRY ABB.
BLU
2 2
65V RUSSIA Q
BLK
3 3
C
D2
DTC123JUA
+37V
D
BLU
37V 4 4
IC1
15V AVR
RED
R41
5 5
220 2W 25.5V
ORG
6 6
D3
3 1
OUT IN
D4
GND +
2
BLK
7 7
D5
1 +
TC74HCU04AF
GND
D6
OUT IN
3 2
-26.2V ORG
8 8
IC2
-15V
R14 CN13
AVR
1 1/4W
1 1 1
X09-B/3
GRY -CN53
3 2 2 HOT
4/4
H
SIGNAL LINE YSS248
COLD
GND LINE E
1
B LINE
YEL
B LINE
2 X09-B/3
-CN11
C
4/4
F
KRF-V8010D(E) (3/4)
KRF-V8010DW(Q) (3/4)
AZ BA BB
indicates safety critical components. For continued protection against risk of fire,
2SA1123 2SC2878 2SA1586 2SC4116 2SA1535
2SA992 2SC3940A 2SB1218A 2SD1819A
2SC1845 2SC3722K
2SC2003 2SC4081
2SC2631
(X00-291X-XX) (A/6)
2 1
F3 2.5A
J1
CN9 CN10
(X00- ) (B/6)
W4
K1
POWER
SW
S1
CN3 WH1
1 1
2 2
R6 D8 D6
100
D7
+5V AVR
5.4V 11.1V
T1 CN1
Q1
D1
HOT
+5.6V +B +B +B
1
COLD
D2 2
6.0V R2
+
2.7K (E,T) : AC230V
D3
+ 50Hz
+
(X) : AC240V
D4 50Hz
(Q) : AC220V
50Hz
Q1 : 2SC3940A(R,S)
Q2 : 2SC2003(L,K)
CN9,10 W4 J1
D1-4 : 1SR139-400 or
2-71 YES NO E03-0149-05
2SA1285A 2SD1757K
S5688B
0-51 E03-0310-05
NO YES D5 : MTZJ6.2(B) or 2SC3245A
0-71 E03-0325-05
HZS6.2N(B2)
D6,7,9 : 1SS133 or HSS104A
D8 : MTZJ2.7(B) or
HZS2.7N(B2)
CN9,10 W4 J1
2-71 YES NO E03-0149-05
NJM4565M TA7805SB DA204U TC9162AF
NJM4565MD TC9163AF
NJM4580ED TC9164AF
NJM2279M LC72131 S-80740AL-A4 X24C02S
LA1837 TC7W241FU SAA6579T/R M62446FP
KRF-V8010D/V8010DW
Y05-3822-70
12/21/15 BC