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Ë Ë Ë Ë Ë A/V INPUT AND OUTPUT CHECK (2)
1. Audio right output
2. Audio right input
3. Audio left output
4. Commom earth for audio
5. Earth for blue
6. Audio left input
7. Blue input
Ë Ë Ë Ë Ë PROTECTOR PERFORMANCE CHECK
1. BEAM PROTECTOR
1. Receive the monoscope pattern signal.
2. Set the contrast control to maximum.
3. Set the brightness control to maximum.
4. Make a short-circuit between the collector and emitter of Q1801 and
make sure that the protector is activated and the stand-by mode is
called. (The POWER LED indicator starts flashing in red.)
2. HIGH-VOLTAGE PROTECTOR
1. Receive the monoscope pattern signal.
2. Connect the bias box to TP603.
3. Adjust the bias box voltage to 20 V and make sure that the protector is
not activated.
Note : Normally about 19 V
4. Adjust the bias box voltage to 25 V and make sure that the protector is
activated.
3. OTHER PROTECTORS
» In checking the performance of other protectors — for example, the
one against shorting of smoothing electrolytic capacitor of +B line —,
pay attention not to damage or deteriorate any related element.
Ë Ë Ë Ë Ë FUNCTION CHECK (1) (VIDEO AND AUDIO)
1. CONTRAST KEY
1. Receive the mono scope pattern signal.
2. Using the PICTURE ADJUST control, select CON-
TRAST.
3. The contrast must be changeable with the +/- key.
2. COLOUR KEY
1. Receive the PAL colour bar signal.
2. Using the PICTURE ADJUST control, select COL-
OUR.
3. The colour must be changeable with the +/- key.
(There must be no colour at the MIN position.)
3. BRIGHTNESS KEY
1. Receive the monoscope pattern signal.
2. Using the PICTURE ADJUST control, select
BRIGHT.
3. The black level must be changeable with the +/-
key.
21PIN Euro-SCART (REAR)
20
18
16
14
12
10
8
21
19
17
15
13
11
9
8. Audio-video control
9. Earth for green
10. Not used
11. Green input
12. Not used
13. Earth for red
14. Not used
Fig.6
R/C
17
6
4
2
7
5
3
1
15. Red input
16. Red/Green/Blue control
17. Earth for video
18. Earth for Red/Green/Blue control
19. Video output
20. Video input
21. Plug shield
MENU KEY
→PICTURE ADJUST
→CONTRAST
→COLOUR
→BRIGHT
→TINT
→V-TONE
→WHITE TEMP
→NORMAL
37VT-26H(GY)
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