Sub Picture White Balance Adjustment; Tint Adjustment - Hitachi C43-FD5000 Service Manual

SERVICE ADJUSTMENTS

2.19 SUB PICTURE WHITE BALANCE ADJUSTMENT

Adjustment Procedure
(1) Observe P852 on the CPT P.W.B. and change the SUB CONTRAST (Item No. 61) of service mode by
using jig R/C and adjust so that the amplitude of the sub-picture is the same as that of the main-picture.
(shown on below)
(2) Press [MUTE] key to write the data.
* Adjustment specification
* Quality control specification : ±3V
* Wave form of P852 = Cathode
(Sub picture level compared with main picture level)
MAIN PICTURE
* Perform this adjustment after the white balance and sub-brightness adjustments of the main picture are
completed.
* White balance 14000K±0 MPCD (Color coordinates: x=0.266 y=0.270)

2.20 TINT ADJUSTMENT

(1) Preparation
Pre heat run should be finished.
(2)
Input window pattern signal like below to the AV3 and AV4.
1/2H
: ±1V
1H
CATHODE WAVE FORM
1/2V
WHITE (CATHODE VOLTAGE)
INT Y = 0%
EXT Y = 0%
INT C = 100%
EXT C = 100%
INT C = -90°
EXT C = +90°
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