(2) Press to Menu mode, then select Picture Mode and set (2) Press R/C to set Picture NORMAL condition. to select CONTRAST. (3) Press Volume Up/Down key to check whether the
Adjust these Horizontal and Vertical lines 2 COLOUR (1) Receive "Colour Bar" signal. 50
(3) Select full mode.
CONTRAST effect is OK or not. (4) Adjust focus control to get the best focusing.
(2) Press to Menu mode, then select Picture Mode and set to select COLOUR. (3) Press Volume Up/Down key to check whether the COLOUR effect is OK or not. 3 BRIGHTNESS (1) Receive "Monoscope Pattern" signal. (2) Press to Menu mode, then select Picture Mode and set
PROTECTOR OPERATION CHECKING
NO POINT ADJUSTMENT CONDITION / PROCEDURE WAVEFORM OR OTHERS to select BRIGHTNESS. 1 H�V PROTECTOR (1) Receive "Monoscope Pattern" signal.
(3) Press Volume Up/Down key to check whether the BRIGHTNESS effect is OK or not. (2) Connect output of Bias Box to D757 cathode
(3) Set voltage of Bias Box to 18V and make sure the 4 SHARPNESS (1) Receive "Monoscope Pattern" signal.
protector is not work.
(2) Press to Menu mode, then select Picture Mode and set to select BRIGHTNESS. (4) Set voltage of Bias Box to 27V, and make sure the (3) Press Volume Up/Down key to check whether the BRIGHTNESS effect is OK or not. 5 TINT (1) Receive "NTSC Colour Bar" signal thru AV in. PROTECTOR in + B line, check all possible damaged components on to select TINT. (3) Press Volume Up/Down key to check TINT, UP for is OK or not.
protector is work.
2 OTHER (1) Once finish rectified Electrolytic Capacitor short testing
+B line. (Use random selected set for inspection) (2) Press to Menu mode, then select Picture Mode and set
7
7 WHITE TEMP (1) Receive "Monoscope Pattern" signal.
A/V INPUT AND OUTPUT CHECKING GREEN and DOWN for RED direction whether
CONDITION / PROCEDURE NO ADJUSTMENT POINT WAVEFORM OR OTHERS
1 AV the "PAL Colour Bar" signal (100% White 6 POWER SAVE (1) Receive "Monoscope Pattern" signal.
OUTPUT CHECK Colour Bar, Sound 400Hz 100% Mod)
(2) Set FEATURE to select SAVE.
(2) Terminate the Video output with a 75 ohm impedance.
Make sure output is as specified (1.0 Vp-p ± 3dB) (3) Press Volume Up/Down key to check the POWER SAVE
effect is OK or not. and whether LED(POWER SAVE)
(3) Terminate the Audio output with a 10 Kohm impedance. light up or not.
Make sure the output is as specified (1.77 Vp-p ± 3dB)
2 AV-1 Check of AV (2) Press to Menu mode, then select Picture Mode and set
INPUT CHECK to select WHITE TEMP.
3 AV-2 Check of AV (3) Press Volume Up/Down key to check WHITE TEMP
INPUT CHECK Option.
4 Component Check of AV 8 (1) Once in PICTURE Mode, and the NORMAL key is
(50Hz 60Hz 480p 576p) pressed, all the settings will be present to normal setting. INPUT CHECK (Normal setting value for every mode, refer on the
5 REAR S-Terminal Check of AV following figure).
INPUT CHECK
standard movie music news CONTRAST 50 60 45 COLOUR 0 5 INPUT CHECK BRIGHT 5 0 SHARPNESS 0 INPUT CHECK PICTURE NR LOW WHITE TEMP. 10 0
