Part-1
TO ENTER SERVICE MODE
- Enter the Main Menu, and then press digits [4=>7=>2=>5] in sequence to enter the service mode.
- All system geometry, and white balance alignments are performed in production service mode. Before starting these alignments, make sure sure that all manual alignments are done correctly.
SCREEN ADJUSTMENT
- For screen adjustment [VG2] item should be selected at the service menu.
- Then the screen 'pot-meter' is gently adjusted until the 'STABLE IN' sign appears.
FOCUS ADJUSTMENT.
- TV is tuned to the signal.
- Then, Focus Pot-meter; the upper pot on the rear side of the FBT transformer, is adjusted for optimum focussing drive. For double focus tubes, there will be two focus potmeteres, each of them should be adjusted for optimum focus on the screen.
FAPS:
The option of APS (Automatic Program Searching) item are ON or OFF. In order to active APS installation procedure when the TV is turned for the very first time, select 'ON'. In order to start TV without APS installation procedure, slect 'OFF'.
The option of APS (Automatic Program Searching) item are ON or OFF. In order to active APS installation procedure when the TV is turned for the very first time, select 'ON'. In order to start TV without APS installation procedure, slect 'OFF'.
ISPM:
In System Programming Mode, for software update. [Off].
In System Programming Mode, for software update. [Off].
INIT:
Initialize NVM. [Off].
Initialize NVM. [Off].
AGCSPD:
IF AGC Speed [1]
IF AGC Speed [1]
AGCTO: AGC Take over. Also used as TOP, when an internal AGC tuner is used. [33].
COFF: Cut Off.
VSD: Vertical Scan Disable [31]
VSD: Vertical Scan Disable [31]
VG2: VG2 voltage adjustment.[31]
TUBE: 4:3 picture tube used or 16:9 picture tube used. [0=16:9 & 1=4:3]
VERT ZOOM: Vertical Zoom for 16:9 [35].
VERT SLOPE: Vertical Slope [37]
VERT SHIFT:
Change vertical shift by "▲/▼" buttons, till the test pattern is vertically centred. Horizontal line at the enter of the test pattern is in equal distance both to the upper and lower side of the picture tube. Check and re-adjust V-SHIFT item if the adjustment becomes improper after some other geometric adjustments are done. [25 is a typical value to this item]
Change vertical shift by "▲/▼" buttons, till the test pattern is vertically centred. Horizontal line at the enter of the test pattern is in equal distance both to the upper and lower side of the picture tube. Check and re-adjust V-SHIFT item if the adjustment becomes improper after some other geometric adjustments are done. [25 is a typical value to this item]
VERT AMP:
Vertical Amplitude (Height) [33] Value may vary set to set.
SCORRECTION: S-Correction [11]
V-LINC: VLx, 0: Tam. 1: Sadece alt, 2: Sadece ust [ 0].
Contd>
Vertical Amplitude (Height) [33] Value may vary set to set.
SCORRECTION: S-Correction [11]
V-LINC: VLx, 0: Tam. 1: Sadece alt, 2: Sadece ust [ 0].
Contd>
