Power - Durabrand DBV4403 Service Manual

Video cassette recorder
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A
B
8
7
L501
AC120V_60Hz
CD501
0R3A433F20
0R414901
1
2
S502
WHITE
3
4
6
C504
S501
275V
0.022
PHE840
BLACK
FH501
FH502
EYF-52BC
EYF-52BC
F501
51MS016L
1.6A125V
1.6A 125V
C505_1
5
250V
0.0022
NU
D507
4
1SS133
C507
0.0047 B
R527
22K
3
2
1.6A 125V
1
CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE
1.6A 125V (F501)
ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D'INCEIE
N'UTILISER QUE DES FUSIBLE DE MEME TYPE
1.6A 125V (F501)
A
B
G-5
C
POWER SCHEMATIC DIAGRAM
D505
1N4005-EIC
D508
1N4005-EIC
D523
1N4005-EIC
D528
TRANSFORMER
1N4005-EIC
SWITCHING
T501
8122009
1
2
NC
3
15
4
SWITCHING
Q503_2
5
2SC4160-OEC-YAC1
150
0.1
0.1
CONTROL
0.4
0
Q502
2SD734
0
W826
R511
120 1/2W
C534
0.012 B
D502
1SS133
C529
R524
-0.4
4.0
0.0082 B
1.8K
0.4
3.0
PHOTO COUPLER
IC511
LTV-817M-VB
74.0
2.4
D506
1SS133
74.0
5.7
NOTE:
THE DC VOLTAGE AT EACH PART WAS
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK
C
D
E
(SYSCON PCB)
R549
330 1/4W
D521
1SS244
C502
500V
0.0027
B
L505
B501
D514
W4BRH3.5X6X1
SB290S
22uH
TSL0808
10
L504
D512
9
NC
SB140-EIC
22uH
TSL0808
8
7
6
W852
R506
680
C515
0.0082 B
VOLTAGE CTL IC
IC501
KIA431
OUT
GND
IN
3
2
1
2.5
3.0
0
R548
1K 1/4W
PHOTO COUPLER
IC505
LTV-817M-VB
ATTENTION:
LES PIECES REPAREES PAR UN
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
D
E
F
G
+5V
+12V
(TUNER)
GND
+32V
11.8
11.7
+12V
12.4
P.CON+12V SW
Q512
KTC3203_Y
R525
P.ON SW
Q513
220
1/4W
KRC103RTK
12.7
R503
0
22K
0
W820
P.CON+5V SW
Q509
KTC3205_Y
5.2
5.1
(S/S)
5.9
(CAP)
R523
(LDM)
390 1/4W
5.15
5.12
5.9
M-CON B+ SW
Q515
KTC3198
CAUTION: DIGITAL TRANSISTOR
CAUTION:
SINCE THESE PARTS MARKED BY
ARE
ETANT
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
F
G
H
TO HI-FI/DEMODULATOR
8
GND
TO TUNER
7
AT+5.2V
P.CON+5V
TO Y/C/AUDIO/CCD/HEAD AMP
P.CON+5V
GND
FROM/TO SYSCON/SERVO
6
POWER_ON-L
AT+12.6_V
AT+5.2V
5
LED_VCC
POWER_FAIL
4
3
P.CON+5V
GND
GND
GND
AT+5V[M-CON]
2
TO OPERATION
AT+5.2V
P.CON+5V
GND
PCB010
VMA224
1
H
G-6

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