Sanyo CE14A2-C, Service Manual

Page: 37 / 48

Service manual CHASSIS 2112-Series EC7-A
22
5.2 Adjustments.
ADJUSTME
NT SIGNAL CONDITIONS TEST POINT ADJUSTMENT POINT ADJUSTMENT PROCEDURE INSTRUMEN
T
Power supply Philips
pattern
Picture: Normalised
Sound: Minimum volume B1
Cathode D850 VR800 Adjust to obtain:
106,5V
±
0.5V in CRTs Philips
A34EAC01X06
Voltmeter DC
Resolution
>0,1V
A.G.C. UHF Band –
mid channel
(e.g. 25) Aerial signal level: 60dBuV
(1mVrms) Pin 1 of TU250
(AGC) SERVICE/VIF/AGC
Adjust to obtain 3,0
±
0,5V
Voltmeter DC
Resolution
>0,1V
G2 Philips
pattern SERVICE/G2/BRI:
50 for Philips CRT
A34EAC01X06 CRT Screen SERVICE/G2/ADJ
SCREEN Potentiometer Adjust just to see the service line Visual
adjustment
Focus Philips
pattern Picture: Normalised CRT Screen FOCUS Potentiometer Adjust to obtain the best possible focusing in
lateral of screen. Visual
adjustment
Vertical slope Philips
pattern
Picture: Normalised CRT Screen SERVICE/GEOMET>/V.SL
OPE Adjust to achieve that the centre horizontal
line matches the beginning of the service
blanking. Visual
adjustment
Vertical
centre Philips
pattern Picture: Normalised CRT Screen SERVICE/GEOMET>/V.S
HIFT Adjust to centre the picture in vertical
direction Visual
adjustment
Height Philips
pattern Picture: Normalised CRT Screen SERVICE/
GEOMET>/V.AMPL Adjust just to get the checked board hidden. Visual
adjustment
Horizontal
centre Philips
pattern Picture: Normalised CRT Screen SERVICE/
GEOMET>/H.SHIFT Adjust to centre the picture in horizontal
direction. Visual
adjustment
Width Philips
pattern Picture: Normalised CRT Screen SERVICE/
GEOMET>/H.AMPL Adjust just to get the checked board hidden. Visual
adjustment
White point Philips
pattern Picture: Normalised CRT Screen SERVICE/WHITE/G
SERVICE/WHITE/B Adjust to obtain a white tone acceptable. Visual
adjustment
TXT centre Philips
pattern Picture: Normalised CRT Screen SERVICE/GEOMETCENT
R TXT Adjust to centre the OSD in the screen. Visual
adjustment
Common condition to all adjustments (except AGC): The aerial signal level must be acceptable (the picture doesn’t present snow degradation).
Width adjustment, H.AMPL, lacks effect whenever the circuit of adjustment is not mounted, which is optional, according to it has been indicated previously.