Assembled P.w.b Adjustment; Memory Initialize; Main Agc Adjustment - Hitachi C43-FD5000 Service Manual

SERVICE ADJUSTMENTS
● Before performing SERVICE ADJUSTMENTS, please refer to the item "TROUBLE SHOOTING".

1. ASSEMBLED P.W.B ADJUSTMENT

1.1 MEMORY INITIALIZE

Adjustment Procedure by R/C Jig.
(1) Select item No.612 (set2) in service menu, press and hold the [RECALL] key on the remote handset until the
OSD background changes to yellow. (
(2) Wait until the OSD background color becomes normal, this means initialize is completed and each settings
become factory preset condition.
unplug
Do not the outlet or perform any key operation until the initialize is completed.
Note: Other method for memory initialize: Link the PRST① and PRST② for longer than 3 seconds.
(3) Change initial-setting values according to the INITIAL-SETTING CHANGE TABLE.
1 Model Select1： ASPECT
Model Select2： HD
2
3 Model Select3： MULTI_PICTURE
4 Model Select4： DESTINATION
Model Select5： LANGUAGE
5
6 Model Select6： SOUND_SYS/COLOR_SYS
Model Select7： TEXT
7
8 Model Select8： PHOTO_MC
Model Select9： LIGHT
9
(4) After set the above items in service menu, set to SHIPMENT by following method.
Select item (set1) in service menu, press the [ENTER] key or [MUTE] key on the remote handset.
Check the setting state displayed on the upper right of a service menu.
(5)
No. Data V203－007－898C－000112100
Color:PAL Sound:6.5
0: 0
1: 1
2: 0
3: 0

1.2 MAIN AGC ADJUSTMENT

Adjustment Preparation
(1) To prevent circuit temperature drift, the set must apply heat run for more then 10 minutes.
(2) Check the RF signal frequency and level accuracy. (e.g. 623.25MHz, -50dBm)
(3) Confirm the function of antenna attenuation is set to OFF.
All manuals and user guides at all-guides.com
It
takes about 3 seconds.)
Items
The state of Model Select setting
From the left to the 1st figure： The state of Model Select1
From the left to the 9th figure： The state of Model Select9
12
C43-FD5000 C50-FD5000
0 0
0 0
0 0
1 1
1 1
2 2
1 1
0 0
0 0
...