Sony PVM-20M2U Service Manual page 37

11-2. Writing HP.WIDTH (NORMAL) data
Note : Not applicable to groups of models 1, 2, 4, and 5.
1) Set the unit in the service mode.
2) Input 102 to HP.WIDTH (NOR).
11-3. HP POSITION adjustment
Note : 11-3. is not applicable to the group of models 3.
1) Input a SECAM color bar.
2) Set the HV-DL mode.
3) Set the unit in the service mode.
4) Adjust
IHPPOSmONI
as shown in Fig.5-30.
Note: The same as 11-3. The phase relationship between the
beginning of IC317 ®PIN pulse and the input VIDEO
signal may be used for control.
/ H-SYNC
L
1-:-:.:-·.;.;.· .. ·.··:->:·:·:·:···:·:-:-:·:-:1
.......... ,. --1
t
Bring the BLK edge to this
position by HP POSITION.
l
Bring the BLK edge to this
position by HP WIDTH HN.
Fig.
5-30
11-4. HP WIDTH (H/V-DL) adjustment
Note : 11-4. is not applicable to the group of models 3.
1) Input a SECAM color bar.
2) Set the unit in the HV-DELAY mode.
3) Set the unit in the service mode.
4) Adjust
IHPWIDlll HN-DBLAYI
as shown in Fig.5-30. (Note: Check
HP POSITION. If it is not in position, repeat 2) and 3).)
11-5. SECAM COL BALANCE
Note : 11-5. is not applicable to the group of models 3.
1) Input a SECAM color bar.
2) Connect the probe of an oscilloscope to TP306.
3) Set the unit in the service mode.
4) Adjust
ISECAMCOLORBALANCER-YI
so that the level in the ach-
romatic color will be straight
5) Connect the probe of an oscilloscope to TP305.
6) Adjust
ISECAM COLOR BALANCE B-Y I
so that the level in the ach-
romatic color will be straight
ll-6. SECAM CHROMA
1) Input a SEC AM color bar.
2) Connect the probe of an oscilloscope to IC404 ®PIN or TP402.
3) Set the unit in the service mode.
4) Adjust
!CHROMA SECAMI
so that the peaks of waveforms will be
flush with each other as shown in Fig.5-3l.
IC404@PIN
20mVmax.
Make Band D flush with each other.
~
A
D
B
t
Fig. 5-31
11-7. SECAM R-Y LEVEL
1) Input a SEC AM color bar.
2) Connect the probe of an oscilloscope to IC404 @?IN or TP40 1.
3) Set the unit in the service mode.
4) Adjust
IR-Y
LIM!L
SECAMI
so that the peaks of waveforms will be
flush with each other as shown in Fig.5-32.
IC404@PIN Make adjustment so that B=D.
60mVmax.
t
B
D
t
20mV
max.
Flg.S-32
12. Writing adjustment results
Write adjustment results in the memory.
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