Service Adjustments - JVC C-1336 Service Manual

SERVICE ADJUSTMENTS
"alignment locations' appearing in the same diagram.
REGARDING GENERAL OR CHROMA ADJUSTMENTS, REFER TO THE APPENDED NTSC:
AS TO THE FOLLOWING ITEMS, OBSERVE THE RESPECTIVE INSTRUCTIONS GIVEN HEREIN. 42
As for the test points and respective volume adjusting positions, refer to the schematic diagram and the section on
C-1336
m NOTICE FOR APPENDED ''NTSC"'
ADJUSTMENT
As to the following adjustment, adjust by referring to
appended NTSC adjustment.
e Safety precaution
Purity, Convergence and White balance
Horizontal Line
B1 Voitage adjustment
Sub Picture adjustment
Sub Tint adjustment ¢ Noise adjustment
Sub Color adjustment
V. Height adjustment
On-Screen (CLK) adjustment
V. IF adjustment
RF, AFC adjustment
S. IF adjustment
mw HOW TO CHECK THE HIGH VOLTAGE
HOLD DOWN CIRCUIT
1. High voltage hold down circuit.
After repair of the high voltage hold down circuit shown
in Fig. 1, this circuit shall be checked to operate collectly.
2. Checking method of the high voltage hold down circuit.
(1) Make the short circuit across the R905, 470 015 W
UNF R (shown in Fig. 2, (._} ) under normal
operating condition.
(2) Confirm the picture goes out.
= SUB BRIGHTNESS
1. Set the Bright, Color, Tint and picture knobs to central
position respectively.
2. Adjust the sub bright VR (R231) to obtain the optimum
brightness.
MAIN P.B. ASS'Y
TS22
D570
POWER P.B. ASS'Y
TP-91@
* Across : ie
this resistor i a Bi
Ic 901
POWER
REGULATOR
R908 D905
Fig. 2
(No. 5883) 7