Sub Phase Adjustment; Sub Col Adjustment; R-Y Level Adjustment; Sub Chroma Adjustment - Sony TRINITRON PVM-14M2U Service Manual

2. SUB PHASE adjustment
Note : Not applicable to the group of models 3.
1. Input a component color bar (R-Y) and EXT SYNC.
(BETA O level signal)
2. Set the unit in the EXT SYNC mode for component input.
3. Connect the probe of an oscilloscope to IC404
®
PIN or TP402.
4. Set the unit in the service mode.
5. Adjust
ISUB
PHASE!
so that the output waveform will be mini-
mum (15 mVp-p orless). (Fig.5-ll)
15mVp-p max.
Flg.5-11
3. SUB PHASE adjustment
Note: Not applicable to groups of models 1, 2, 4, and 5.
1. Input an NTSC color bar.
2. Connect L309 to GND and TP307 to 5V line (L320 line), re-
spectively.
3. Set the unit in the service mode.
4. Adjust
ISUB PHASE!
so that the output waveform will be mini-
mum (15 m Vp-p or less). (Fig.5-ll)
4. SUB CHROMA adjustment
Note : Not applicable to the group of models 3.
1. Input component color bars (R-Y, Y, and B-Y). (BETA O level
signal)
2. Set COMPONENT LEVEL to BETA O via MENU.
3. Connect the probe of an oscilloscope to IC404
®
PIN orTP402.
4. Set the unit in the service mode.
5. Adjust
ISUB CHROMA NORMAL!
so that the peaks of waveforms
will be flush with each other as shown in Fig.5-12.
A
-----_9- ____________
J -·
B
20mVmax.
D
Make B flush with D
Flg.5-12
5. SUB COL adjustment
Note : Not applicable to groups of models 1, 2, 4, and 5.
1. Set the unit in the service mode.
2. Input adjustment value 98 to
)SUB CHROMA NORMAL!.
(Fig.5-12)
6. R-Y LEVEL adjustment
Note : Not applicable to the group of models 3.
1. Input component color bars (R-Y, Y, and B-Y). (BETA O level
signal)
2. Set COMPONENT LEVEL to BETA O via MENU.
3. Connect the probe of an oscilloscope to IC404
©>
PIN orTP40l.
4. Set the unit in the service mode.
5. Adjust
)R-YLEVBLCOMPONENTI
so that the peaks of waveforms
will be flush with each other as shown in Fig.5-13.
Make adjustment so that B
=
D as shown above. (20 m V max.)
Check that the difference between B and C is 30 m V or less.
30mVmax.
A
•
B
20mV max.
Fig. 5-13
7. SUB CHROMA N10/SMPTE
Note : Not applicable to the group of models 3.
1. Input component color bars (R-Y, Y, and B-Y). (SMPTE level
signal)
2. Set COMPONENT LEVEL to NlO/SMPTE via MENU.
3. Connect the probe of an oscilloscope to IC404
®
PIN or TP402.
4. Set the unit in the service mode.
5. Adjust
)SUB CHROMA
SMPTl!l
so that the levels of Band D will be
the same. (Fig.5-14)
A
-----_9- _____________
i -·
B
20mV max.
D
Make B flush with D
Fig. 5-14
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