HCD-VR50/VR70
– 17 –
– 18 –
SECTION 7
DIAGRAMS
7-1. CIRCUIT BOARDS LOCATION
TUNER UNIT
VIDEO board
JACK board
TC-B board
TC-A board
PANEL FL board
PANEL VR board
FRONT INPUT board
TRANS board
MAIN board
PA board
CD-L board
CD-R board
LED (PANEL) board
DOOR SWITCH board
BD board
LED (CD) board
CD MOTOR board
TABLE SENSOR board
AUDIO board
LEAF SW board
TUNER UNIT is supplied
as the assembled block.
VIDEO SECTION
Frequency adjustment
1. Connect the frequency counter to check point of the VIDEO
board.
2. Adjust CT503 of the VIDEO board so that the frequency counter
read 27MHz ± 80Hz at STOP condition.
[ VIDEO BOARD ] – SIDE B –
Adjustment Location :
[ VIDEO BOARD ] – SIDE A –
frequency counter
VIDEO board
(27 MHz)
+
–
SL501
IC502
IC506
(27MHz)
(GND)
SL502
SL503
TEST
MODE
VIDEO
FREQUENCY
(GND)
IC507
IC505
Adjustment Location :
[ BD BOARD ] — SIDE B —
TP
(VC)
TP
(RF)
TP
(TE)
TP
(IOP)
TP
(FE)
TP
(AGCCON)
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
