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2. Playback a 25M Master Tape.
Note:
A normal picture is not appeared on the monitor.
3. Set the items in the Service Menu as follows.
D08 PB PLL PHS R : 0
D09 PB PLL SL R : -20
D41 VITERBI MODE : OFF
D42 PB MODE : PB H
4. Measure the Voltage at TP605 ( V play )
5. Adjust D35 PB PLL VCO R so that the voltage is in the specification.
6. Confirm the red segment is not displayed on the Error meter of R1
and R2.
7. If it is not, adjust D08 PB PLL PHS R and D09 PB PLL SL R and
return to the step 5.
6.6.11. PLL Lock Confirmation (25M Mode, RP Rch)
Board
Specification
Test Point
Adjustment Point
Input Signal
Mode
Tape
M.EQ
1. Measure the voltage at TP505 in the Eject mode. ( V eject )
2. Playback a 25M Master Tape.
Note:
A normal picture is not appeared on the monitor.
3. Set the items in the Service Menu as follows.
D22 RP PLL PHS R : 25
D23 RP PLL SL R : -5
D42 PB MODE : PB H
4. Measure the Voltage at TP505 ( V play )
5. Adjust D36 RP PLL VCO R so that the voltage is in the specification.
RF EQ (H4)
V play - V eject <= ±
0.05V
TP505
Service Menu
Playback
VFM3580KM (Color Bar
Portion)
Oscilloscope
107
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