Toshiba 27AF45 Service Manual page 22

2-17: SEPARATION 1, 2
Please do the method (1) or method (2) adjustment.
Method (1)
1. 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.
2. Connect the oscilloscope to the Audio Out Jack.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select "SEP 1".
4. Press the VOL. UP/DOWN button on the remote control
to adjust it until the audio output wave becomes a fine
sine wave.
5. Press the CH UP button once the set to "SEP 2" mode.
Then perform the above adjustment 4.
Method (2)
1. Set the multi-sound signal generator L-ch=1KHz, R-ch
=Non input and receive the RF.
2. Connect the oscilloscope to the Audio Out Jack (R-ch).
3. Press the AUDIO SELECT button on the remote control
to set to the stereo mode.
4. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select "SEP 1".
5. Press the VOL. UP/DOWN button on the remote control
to adjust it until the R-ch output becomes minimum.
6. Set the multi-sound signal generator L-ch=Non input,
R-ch=1KHz and receive the RF.
7. Connect the oscilloscope to the Audio Out Jack (L-ch).
8. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (35) on the remote control to
select "SEP 2".
9. 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. Receive the monoscope pattern.
2. Connect the AC voltmeter to pin 6 of CP101.
3. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (33) on the remote control to
select "LEVEL".
4. Press the VOL. UP/DOWN button on the remote control
until the AC voltmeter is 75 ± 2mV.
ELECTRICAL ADJUSTMENTS
D-4
2-19: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of the each adjustment
items are set correctly referring below.
NO. FUNCTION
02 H.VCO
04 AFC GAIN
05 V.SHIFT
09 VS CORRECTION
15 BRI.MAX
17 BRI.MIN
19 CONT.CENT
20 CONT.MIN
21 COL.MAX
23 COL.MIN
25 SHARPNESS
26 CB DL
27 CR DL
RF AV CS
03 03
03
06 06
06
02 02 02
36 36 36
160 160 160
30 30
30
64 64 64
05 05 05
90 90 90
00 00
00
40 40
40
00 00 00
00 00 00
27AF45/27AF45C