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Service Adjustments
Important Notice:
Do not attempt to adjust service adjustments not listed on below otherwise it may cause loss of performance and for
correct operation.
Item 01 [RFAGC] AGC
NOTE: Do not attempt this adjustment with weak signal.
1. Tune the receiver to most clearest (or strongest) VHF
station in your area. Set the brightness and contrast
controls to maximum. Set the colour control to mini-
mum.
2. Select Item No. 01 [RFAGC] in the service mode.
3. Change value until the snow noise just disappears.
4. Exit from the service mode.
Item 02 [H-PHA] HORIZONTAL CENTRE
1. Receive a monochrome circular pattern.
2. Set the brightness and contrast to normal.
3. Select Item No. 02 [H-PHA] in the service mode.
4. Change value to be optimum horizontal centre position.
5. Exit from the service mode.
Item 03 [V-POS] VERTICAL CENTRE
1. Receive a monochrome circular pattern.
2. Set the brightness and contrast to maximum.
3. Select Item No. 03 [V-POS] in the service mode.
4. Change value to be optimum vertical centre position.
5. Exit from the service mode.
Item 04 [V-SIZ] VERTICAL SIZE
1. Receive a monochrome circular pattern.
2. Set the brightness to normal and contrast to maximum.
3. Select Item No. 04 [V-SIZ] in the service mode.
4. Change value to be optimum vertical size.
5. Exit from the service mode.
1. Receive a monochrome circular pattern.
2. Set the brightness and contrast to normal.
3. Select Item No. 17 [OSDHP] in the service mode.
4. Change value to be proper OSD horizontal position.
5. Exit from the service mode.
1. Receive a monochrome circular pattern.
2. Set the brightness and contrast to maximum.
Horizontal centre
3. Select Item No.19 [EWDC] in the service mode.
4. Change value to be proper horizontal width.
5. Exit from the service mode.
1. Tune receiver to a caption channel.
2. Check that CAPTION position is in the horizontal
Vertical centre
3. Select Item No. 125 [CCD] in the service mode.
4. Adjust data with + or - key for proper horizontal center.
5. Exit from the service mode.
-13-
Item 17 [OSDHP] OSD H-POSITION
Item 19 [EWDC] HORIZONTAL WIDTH
Item 125 [CCD] CAPTION H-POSITION
±
center of the screen. If CAPTION center is too right or
left, perform steps 3-6. (See figure below.)
XXX XXXX XXXX XXX
A=B
A
Caption H-position Adj.
Vertical size
B
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