Vertical Size Adjustment - Hitachi C47-WD7000 Service Manual

SERVICE ADJUSTMENTS

2.7 VERTICAL SIZE ADJUSTMENT

Adjustment Preparation
(1) PICTURE control should be set Factory Preset condition.
(2) DCU ROM CHECK should be finished.
(3) Place the set facing east.
Adjustment Procedure
2
PAL 100i MODE I C No.13
(1) Input any PAL signal.
(2) Press [MENU] key.
(3) Choose [FUNCTION] and [Scan Mode], set to [100Hz] mode.
(4) Press [MENU] key to exit from [FUNCTION].
(5) Press and hold the SERVICE ONLY SW. on DEF/CONVER P.W.B. and
[MUTE] key of Handset.
DCU cross-hatch is appeared with Conv. Data cleared.
(6) Press the [TV/VIDEO] key on the front control panel, then SERVICE MENU appears.
(7) Choose V.SIZE (amplitude) item by using Handset up/down cursor key.
(8) Adjust V.SIZE (amplitude) as following by using Handset left/right cursor key.
So that the distance between the horizontal line at the upside line from center line
and underside line from center line of DCU's cross-hatch pattern.
(9) Press [ENTER] key of handset to write the data.
(10) After adjustment, press SERVICE ONLY SW. to exit from SERVICE mode.
2
PAL 50p MODE I C No.17
(1) Input any PAL signal.
(2) Press [MENU] key.
(3) Choose [FUNCTION] and [Scan Mode], set to [Virtual HD] or [Progressive] mode (50P mode).
(4) Press [MENU] key to exit from [FUNCTION].
(5) Adjust the same items as (5)-(10) of setting PAL 100i MODE.
2
NTSC 60p MODE I
(1) Input any NTSC signal
(2) Adjust the same items as (5)-(10) of setting PAL 100i MODE.
PAL HD MODE(16:9 Model only)
(1) Input any PAL HD signal (1080i/50).
(2) Press [MENU] key.
(3) Choose [FUNCTION] and [Scan Mode], set to HD mode.
(4) Press [MENU] key to exit from [FUNCTION].
(5) Set PAL HD mode referring to P29(*) setting procedure of PAL HD mode.
(6) Adjust the same items as (5)-(10) of setting PAL 100i MODE.
C No.21
2
I C No.25
34