Sharp SX68JF100, Руководство по обслуживанию

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12
SX68JF100
12-1 12-2
NO. Adjustment part Adjusting procedure and conditions Waveform and others
FUNCTION OPERATION CHECK (2) (VIDEO AND AUDIO)
11 COLOUR
SYSTEM
1
When E-12CH PAL COLOUR BAR is received
and another mode except PAL or AUTO is se-
lected in the colour system,
Verify that the colour must not be properly op-
erated.
2
When E-10CH SECAM COLOUR BAR is re-
ceived and another mode except SECAM or
AUTO is selected in the colour system,
Verify that the colour must not be properly op-
erated.
3
When E-37CH NTSC 4.43 COLOUR BAR is
received and another mode except N4.43 or
AUTO is selected in the colour system,
Verify that the colour must not be properly
operated.with UP/DOWN.
4
When JA-8CH NTSC 3.58 COLOUR BAR is
received and another mode except N3.58 or
AUTO is selected in the colour system,
Verify that the colour must not be properly op-
erated.
Note: Take care that the colour and
sound must not be properly
operated with the special sig-
nal E-4, E-37, J-38 and E-64
in the auto mode.(Check it in
the forcible mode.)
12 SOUND
SYSTEM
1
When OI-9CH PAL COLOUR BAR is received
and M, B/G, I is selected in the sound system,
Verify that the sound must not be properly out-
put.
2
When E-23CH monoscope is received and M,
B/G, D/K is selected in the sound system,
Verify that the sound must not be properly out-
put.
3
When E-12CH colour bar is received and M, I,
D/K is selected in the sound system,
Verify that the sound must not be properly out-
put.
4
When JA-8CH colour bar is received and B/G,
I, D/K is selected in the sound system,
Verify that the sound must not be properly out-
put.
Note: Take care that 5.5M of 1 and
6.5M of 3 are slight in the
variation.
13 SPATIALIZER
Key
1
Receive E-5CH music broadcast.
2
The sound mode must be switched with
SPATIALIZER key (R/C) as follows.
SPATIALIZER OFF
↓
SPATIALIZER 1
↓
SPATIALIZER 2
↓
3
Verify that the sound from the speaker in the
MONO mode is felt to be wide.
R/C key or MENE screen
14 S-BOOSTER
1
Receive E-5CH music broadcast.
2
Select S-BOOSTER in S-mode.
3
The high/low bands must be varied with ON/
OFF.
(The high/low bands must be raised with ON.)
NO. Adjustment part Adjusting procedure and conditions Waveform and others
PROTECTOR OPERATION CHECK
1 H, V protector
1
Receive E-5CH (monoscope pattern).
2
Connect the bias box to the cathode side
(R1662 side) of D1621.
3
Set the voltage of the bias box at 15V, and verify
that the protector does not operate.
4
Set the voltage of the bias box at 24V, and verify
that the protector operates.
Reference Approx. 17.7 V as
ordinary
2 Other protectors
1
Correspondence for short circuit of
smoothening electrolysis of +B line and so on
To check the operation of the protector and so
on, take care for the breakage, deterioration
and so on of each element.