Noblex 1 113 261 05, Service Manual

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Service Adjustments with Replacing Memory IC(IC802)
(1) Receive the monochrome circular pattern.
(2) Set the brightness and contrast to normal.
(3) Select [H-P] in the service mode.
(4) Change value to be optimum horizontal centre position.
(5) Exit from the service mode.
(1) Receive the monochrome circular pattern.
(2) Set the brightness and contrast to maximum.
(3) Select [V-P] in the service mode.
(4) Change value to be optimum vertical centre position.
(5) Exit from the service mode.
(1) Receive the monochrome circular pattern.
(2) Set the brightness and contrast to maximum.
(3) Select [V-S] in the service mode.
(4) Change value to be optimum vertical size.
(5) Exit from the service mode.
(1) Receive the monochrome circular pattern.
(2) Set the brightness and contrast to normal.
(3) Select [OSD] in the service mode.
(4) Change value to be proper OSD position.
(5) Exit from the service mode.
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 [AGC] in the service mode.
(3) Change value until the snow noise just disappears.
(4) Exit from the service mode.
(1) Connect DC meter to TP-D and the ground.
(2) Tune the receiver to the clearest station.
(3) Disconnect RF input. (Disconnect antenna plug from
the antenna socket.)
(4) Select same channel. (If you have selected channel 03
in step 2, press “0” button next “3” button on the
remote control to select channel 03.)
(5) Connect antenna plug to the antenna socket.
(6) Select [VCO] in the service mode.
(7) Change value until the voltage (on TP-D) to be
4.5±0.2V at OK point.
(8) Exit from the service mode.
(1) Switch on the TV.
(2) Select [AFCG] in service mode.
(3) Change data value to “01”.
(4) Exit from the service mode.
±
Item 17 [AFCG] AFC GAIN
NG
OK
4.5V
±
0.2V
0 255
VCO DATA
T
P
-D
V
O
LT
A
G
E
Item 06 [VCO] AFT
Item 05 [AGC] AGC
Item 04 [OSD] OSD POSITION
Item 03 [V-S] VERTICAL SIZE
Item 02 [V-P] VERTICAL CENTRE
Item 01 [H-P] HORIZONTAL CENTRE
IC201
IF /VIDEO/CHROMA/DEF.
IC802
MEMORY
MAIN BOARD
TP-D (J146)
Horizontal centre
Vertical centre
Vertical size