Kenwood KRF-X7775D Service Manual page 35

DB DC
+17V
R117
47
17.1V E.VOLUME
R131 2.2
R113 C113 R115
220K 560P 8.2K
IC6
BLch
(BOTTOM
VIEW)
BRch
C140
100P R114 C114 R116 C116
220K 560P 8.2K 100P
C139 100P
C135 100P
+17V
R118
47
-16.6V
R147
47
E.VOLUME
C163
100P
R143 C145 R145
C169 220K 560P 8.2K
100P
IC8
FLch
(BOTTOM
VIEW)
FRch
R150
1K R144 C146 R146
220K 560P 8.2K
R148
47
VOL.
+8dB-MAX : 3.8V
OTHERS : -16.7V
+17V
R187
47
C203
100P
C209 E.VOLUME
100P
IC10
Cch
(BOTTOM
VIEW)
SWch
R184
1K C204
100P
R188
47
R217
47
C233
100P
C215 E.VOLUME
100P
IC12
SLch
(BOTTOM
VIEW)
SRch
17.1V
R214
1K
R218
47
-16.6V
+17V
DD DE
17.1V
C123
IC7 (1/2)
R127
4.7u50 3 8
10
1
+
2
R125 13K
IC7,9,11,13
C129 33P
FLAT AMP
+17V
Q3-8
30
GAIN SW
14
C130 33P ( ON:15.2dB
)
OFF:5.2dB 13
R126 13K
12
R128
6 9
C124
7 10
4.7u50
5 22
+
IC7 (2/2) 4
17V
+17V
C151
IC9 (1/2)
4.7u50 8 R161
3
47
1
+ 2
R159 13K
C157 33P
1
14
13
R153
12
10K
Q3
23
R154
Q4
10K
8
8
C158 33P
9
R160 13K
R164
6
C152
10
7
4.7u50
5
+
4
IC9 (2/2)
17V
+17V
C191
IC11 (1/2)
4.7u50 3 8
1
+
2
17.1V
R199 13K
C197 33P
R193
10K
Q5
R194
Q6
10K
C198 100P
R200 33K
6
C192
7
4.7u50
5
+
IC11 (2/2) 4
-16.6V
17V
+17V
C221
IC13 (1/2)
4.7u50 3 8
R231
1
+ 24
2
47
R229 13K
C227 33P
R223
10K
Q7
R224
Q8
10K
C228 33P
R230 13K
R232
6
C222
47
7
4.7u50 5 7
+
4
IC13 (2/2)
17V
DF DG
(X25- ) (C/11)
C301 R303
22u50 220
+
C302 R304
22u50 220
+
C311 R313
22u50 220
+
CN2
13 +17V
12 GND
11 NC
C312 R314
10
V/REC MUTE
22u50 220
CN101
9 PRE ZB-MUTE DQ-4 +
8 PRE S-MUTE
Lch 1
C321 R323
7 F/C/SW-MUTE
Rch 2
22u50 220
6 SR
SLch 3
+
5 SL
SRch 4
4 CE
SBLch 5
3 FR
SBRch 6
2 A GND
Cch 7
C322 R324
G.GND 8
22u50 220
1 FL
SWch 9
+
ZBLch 10
ZBRch 11
F/C/SW 12
CN3
S 13
15 V-B OUT
PRE ZB 14 C331 R333
14 PRE ZB-MUTE 22u50 220
ZB V 15
13 PRE S-MUTE +
12 F/C/SW-MUTE
11 BR
10 BL
C332 R334
22u50 220
9 SW +
8 G.GND
7 CE
C341 R343
22u50 220
6 SBR
5 SBL +
4 SR
3 SL
2 FR
C342 R344
1 FL
22u50 220
+
VR-5080 (X25-6410-10)
DESTINATION UNIT
J101
COUNTRY ABB. No.
U.S.A. K
E63-1173-05
0-10
(NI)
CANADA P1
VR-5090 (X25-6410-11)
DESTINATION UNIT
J101
COUNTRY ABB. No.
U.S.A. K1
E63-1176-05
0-11
(GOLD)
CANADA P2
KRF-X7775D (X25-641X-XX)
DESTINATION UNIT
J101
COUNTRY ABB. No.
E63-1173-05
EUROPE E1 2-71
(NI)
KRF-X7775D-S (X25-64XX-XX)
DESTINATION UNIT
J101
COUNTRY ABB. No.
PX Y1
12-71
EUROPE E2
E63-1173-05
GENERAL MARKET M1
10-21 (NI)
AUSTRALIA X1
SHANGHAI V 22-10
IC1 : NJM4580ED
IC2,21 : NJU7312AM
IC3,22,24 : NJU7313AM
IC4,5,7,29-33,36
: NJM4565M
VR-5080/5090 (4/6)
IC6,8,10,12 : TC9459N
IC9,11,13,25-28 KRF-X7775D/X7775D-S (4/6)
: NJM4565MD
IC23 : NJU7311AM
IC34 : TC9184AP
IC35 : TC9459N
Q1-8,11,12,15-18
: 2SC2878 (B)
Q13 : 2SA1576A (R,S) or
2SA1586 (Y,GR)
Q14 : DTC124EUA or
UN5212
D3,4 : MA111
D5-8 : DA204U or
1SS302
DIGITAL LINE
SIGNAL LINE
GND LINE
+B B LINE
B B LINE
DH DI
X07-A/5
-CN3
Q301-320 : 2SC2878(B)
5/6
J101
R305 R307
220 47
Lch P
R351 R361 Q303
2.2K 2.2K
Q301
R352 R362
Q302
2.2K 2.2K
R308
Q304
CAUTION: For continued safety, replace safety criti-
R306 47
Rch
220
cal components only with manufacturer's recom-
R315 R317
mended parts (refer to parts list).
220 47
SLch
critical components. For continued protection against
R353 R363 Q307
2.2K 2.2K
risk of fire, replace only with same type and rating
Q305
fuse(s). To reduce the risk of electric shock, leakage-
R354 R364
Q306
current or resistance measurements shall be carried
2.2K 2.2K
R318
Q308
R316 47 out (exposed parts are acceptably insulated from the
SRch
220
supply circuit) before the appliance is returned to the
J102
R325 R327
customer.
220 47
SBLch
R355 R365
Q311
2.2K 2.2K
Q309
The DC voltage is an actual reading measured with a
R356 R366
high impedance type voltmeter with a cassette
Q310
2.2K 2.2K
R328
Q312
loaded at playback mode. The measurement value
R326 47
SBRch
may vary depending on the measuring instruments
220
Q301-320
used or on the product. Bias circuit DC voltage is
PRE OUT
MUTE
measured while in the record mode.
R335 R337
220 47
Cch
R357 R367 Q315
2.2K 2.2K
Q313
R358 R368
Q314
2.2K 2.2K
R338
Q316
R336 47
SWch
220
J103
R345 R347
220 47
1 ZBLch
R359 R369 Q319
2.2K 2.2K
Q317
R360 R370
Q318
2.2K 2.2K
R348
Q320
R346 47
2 ZBRch
220
3 ZB VIDEO OUT
VR-5080 (X11-3890-10)
DESTINATION UNIT
A J1,2 J11
J102 J103
COUNTRY ABB. No.
U.S.A. K
E63-1174-05 E63-1178-05
0-10 NO E63-1112-05 E63-1164-05
(NI) (NI) CANADA P1
VR-5090 (X11-3890-11)
DESTINATION UNIT
J1,2 J11,12
J102 J103 A
COUNTRY ABB. No.
U.S.A. K1
E63-1177-05 E63-1179-05
0-11 YES E63-1113-05 E63-1111-05
(GOLD) (GOLD) CANADA P2
KRF-X7775D (X11-3890-XX)
DESTINATION UNIT
A J1,2 J11
J102 J103
COUNTRY ABB. No.
EUROPE E1 0-10 NO E63-1112-05 E63-1164-05
E63-1174-05 E63-1178-05
(NI) (NI)
KRF-X7775D-S (X11-3XXX-XX)
DESTINATION UNIT
J1,2
A J11
COUNTRY ABB. No.
J102 J103
PX Y1
GENERAL MARKET M1
890-10
AUSTRALIA X1 NO E63-1112-05 E63-1164-05
E63-1174-05 E63-1178-05
EUROPE E2
(NI) (NI)
SHANGHAI V 902-10
KRF-X7775D/X7775D-S/VR-5080/5090
Y05-4210-10
DJ DK
indicates safety
J12 J13 J14
NO E63-1114-05 E63-1163-05
J13 J14
E63-1115-05 NO
J12 J13 J14
NO E63-1114-05 E63-1163-05
J12 J13 J14
NO E63-1114-05 E63-1163-05