Toshiba 24AF45, Service Manual, Page: 22 / 55

ELECTRICAL ADJUSTMENTS
D-4 27AF45/27AF45C
Please check if the fixed values of the each adjustment
items are set correctly referring below.
2-19: Confirmation of Fixed Value (Step No.)
FUNCTION
H.VCO
AFC GAIN
V.SHIFT
VS CORRECTION
BRI.MAX
BRI.MIN
CONT.CENT
CONT.MIN
COL.MAX
COL.MIN
SHARPNESS
CB DL
CR DL NO.
02
04
05
09
15
17
19
20
21
23
25
26
27 RF
03
06
02
36
160
30
64
05
90
00
40
00
00
CS
03
06
02
36
160
30
64
05
90
00
40
00
00
AV
03
06
02
36
160
30
64
05
90
00
40
00
00
2-17: SEPARATION 1, 2
Please do the method (1) or method (2) adjustment.
Method (1)
1.
2.
3.
4.
5.
Set the multi-sound signal generator for each different
L-ch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz)
and receive the RF.
Connect the oscilloscope to the Audio Out Jack.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select “SEP 1”.
Press the VOL. UP/DOWN button on the remote control
to adjust it until the audio output wave becomes a fine
sine wave.
Press the CH UP button once the set to “SEP 2” mode.
Then perform the above adjustment 4.
Method (2)
1.
2.
3.
4.
5.
6.
7.
8.
9.
Set the multi-sound signal generator L-ch=1KHz, R-ch
=Non input and receive the RF.
Connect the oscilloscope to the Audio Out Jack (R-ch).
Press the AUDIO SELECT button on the remote control
to set to the stereo mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select “SEP 1”.
Press the VOL. UP/DOWN button on the remote control
to adjust it until the R-ch output becomes minimum.
Set the multi-sound signal generator L-ch=Non input,
R-ch=1KHz and receive the RF.
Connect the oscilloscope to the Audio Out Jack (L-ch).
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (35) on the remote control to
select “SEP 2”.
Press the VOL. UP/DOWN button on the remote control
to adjust it until the L-ch output becomes minimum.
The output difference of the between with Filter and
without Filter should be more than 25db for both L and R.
2-18: LEVEL
1.
2.
3.
4.
Receive the monoscope pattern.
Connect the AC voltmeter to pin 6 of CP101.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (33) on the remote control to
select “LEVEL”.
Press the VOL. UP/DOWN button on the remote control
until the AC voltmeter is 75
±
2mV.