Kenwood DV-4050-B Service Manual page 9

K L
(X25-6380-10)
IC7
(BOTTOM VIEW)
OPTICAL
OUTPUT
WAVEFORM
Q101,103
MUTE
(MIX L/R)
C130
1000P
Q101
A1
2.3V
1
R150
GND
3.3 2
OPT
VCC VCC VCC
R92 OUT
5.0V
R154
1.6V 3
4.9V
TEC956
47K
220
Q111 C131 10P
J3
C129 R151 R153
L10
0.1 91 22
1.6V
VCC
COAX
OUT
Q103
Q112
Q111,112
-11.9V
OUTPUT DRIVER
(COAX OUT)
+5V
Q108,109
MUTE
(MIX L/R)
J1
C140 R128 R134 R140
47u35 180 180 150
1 MIXL1
+
R129 R135
1K 1K
Q105,106
Q105 Q108
MUTE
2 MIXR1
(MIX L/R)
R121
5.6K 3 MIXL2
MUTE R130 R136
ON : 1.2V 1K 1K
OFF : -11.9V
Q106 Q109
Q104
C124 R163
47u35 R131 R137 150
4 MIXR2
+
180 180
MUTE
J2
R133 (SW) R139 R142
180 180 150
Q29-31
SW
OUTPUT
R132 R138
1K 1K
DRIVER
MIX
(Y+C)
(SW)
Q107 Q110
1.6V
C125 47u25 R127 100K
+
+5.5V
BUFFER
J4
(Y+C)
Q28 R87
R78 R84
Q30
560 100 68
0.6V
1 VIDEO
C46 R82 C48
Q26,27
Q29
47u25 100 0V 47P
Y+C
+
Q27 R88
Q31
R79
-3.2V 68
2 VIDEO
100
R74
C47
-3.8V
3K 47P
5.5V 5.5V
R165 1
+5.5V J5
4.7V
0.6V
Q18 C
R53 Q20
R55
0.6V
0.6V 100
68
R46 C35 R50
Q19
1.2K 47u25 100 0V
+
Q21
0V
C38
-4.8V
-3.2V 47P
-5.5V
Y
Q8-11 Q19-21 J6
R56
68
BUFFER OUTPUT DRIVER
1 Y
(Cy SIGNAL) (Y SIGNAL)
R36 C12
68 47P
+5.5V
4.7V
Q12
2 Cb
Q10
OUTPUT DRIVER
C11
R32
(Cr SIGNAL)
Q12 47P
100
R27 C10 R30 0V R35
Q11
820 47u25 100 68
3 Cr
+
E1 E2
DV-4050-B/DVF-R6030 (1/2)
M N
(W02-2757-05) Replace with new one only if defective
CN1
5.0V R10 470K
EV +5V 1 +5V
12.0V
C22 5P
EV +12V 2 +12V
C51
12.0V 14.9V
1000u6.3
IC3
+
A +12V 3 +12V OUT IN +B
R31
GND
2.2
A 12V GND 4
A
A 12V SGND 5
IC4
-11.9V
GND
A -12V 6 12V OUT IN
C52
-14.8V
330u16 C23 5P
A +5V 7
+
4.3V
P-SW
8
L2
(HIGH ON)
33uH
C31 +9V +9V
1000u6.3 L3
33uH
+
5.1V
+5V +5V
C40 5P 3.8V
C55
CN2
1000u6.3
IC5
D +3.3V 1
+
L6 15uH
D +3.3V 2 +3.3V OUT IN
GND GND
D GND 3 3.2V
D GND 4
C34 47u25 R30
D GND 5
+
10
D +5V 6 C64 0.47
1/4W
DS GND 7
B
R32
M +9V 8 +9V
M+9 GND 9 9.1V
2.2
L5
330uH
FL -35V 10 35V 35V
-33.9V L4
FL + 11
33uH
C66
0.1
FL - 12
R15
270
L7
15uH
+12V
+5V
R22 1K
R27 C46
10K 47u25
+
IC1,2 : NJM4580D
IC4 : TC74HC08AP
IC5 : PQ7RV4
IC6 : PST9121
IC7 : TC74HCT04AP
IC8 : TA7805S
IC9 : TA79005S
Q1,5,7,11,15,19,22,29,
112 : 2SA933AS(Q,R)
Q2,3,6,8,9,12,16,17,23,
24,26-28
: 2SC1923(R,O)
1 S-VIDEO
Q4,10,18,20,21,25,
30-35,118,201
: 2SC1740S(Q,R)
Q100,103,104,114,116,
117 : DTC124ESA
Q101,102,113,115
: DTA124ESA
Q105-110
: 2SC2878(B)
Q111 : 2SC2785(F,E)
Q200 : 2SA1124(Q,R)
D1-6,10 : S5688B
D9,12-17
: 1SS133 or
HSS104A
D11 : RD6.8ES(B) or
MTZJ6.8(B)
D200 : RD4.7ES(B) or
MTZJ4.7(B)
D201 : RD30ES(B) or
MTZJ30(B)
DIGITAL LINE
SIGNAL LINE
GND LINE
B LINE
+B
B B LINE
O P
T1
POWER
TRANSFORMER
D5
L1
J10
D6
12V
C26
C61
470P
R2
10 2200P
D7
D8
C57
2200P
D9
C58
2200P
D1
IC1
D
C
TR1
S
D10
PC1
D11
D2
R6
10
R20
10K C41 47u25
+
T2
D12
D13 D3 ZD1
C59
IC2
220P
C10 R7
D
47u25 6.8
C
+
S
D4
IC1 : TOP226Y or D1,3,10
TOP227Y D2,4,6,12 :
IC2 : TOP222Y D5,7
IC3 : uPC78M12HF or D8,9
NJM78M12FA D11,13
IC4 : uPC79M12HF or
NJM79M12FA D14-17
IC5 : PQ3RF23 or
PQ3RF33 TR1
IC6,7 : TA76431S or
uPC1093J PC1-3
ZD1
Q R
X14
-CN1
2SA1124 2SC2785
2/2
2SC1923
2SC2878
C
F1
CN0
2A 250V
ACN
1 NJM4580D DAN202U
ACN
1
(K) : AC120V 60Hz
(Y) : AC110-120V/220-240V~
50/60Hz
TC74HC08AP
TA79005S
CAUTION: For continued safety, replace safety critical com-
ponents only with manufacturer's recommended parts (refer
: EG01C
to parts list).
D1NL20U
: D2L20U
continued protection against risk of fire, replace only with
: D3S4M
: D1NS4 or same type and rating fuse(s). To reduce the risk of electric
D2S4M
shock, leakage-current or resistance measurements shall
: D1N60
be carried out (exposed parts are acceptably insulated from
: 2SC1815GR
the supply circuit) before the appliance is returned to the
: PC123FY2
customer.
: P6KE200
The DC voltage is an actual reading measured with a high
impedance type voltmeter. The measurement value may
vary depending on the measuring instruments used or on
the product. Refer to the voltage during PLAY unless other-
wise specified; The value shown in ( ) is the voltage mea-
sured at the moment of STOP.
DV-4050-B/DVF-R6030-B
Y22-8320-10
S T
DTA124ESA
DTC124ESA
2SC1740S
DA204U
TA7805S
indicates safety critical components. For