Sony CFD-CD777SMK2 Service Manual page 12

CFD-CD777SMK2
3. Phase Check
Mode: FWD/REV playback (DECK A)
FWD playback (DECK B)
test tape
P-4-A063
(6.3 kHz, –10 dB)
L-CH
set
R-CH
Screen pattern
in phase 45 ° 90 ° 135 ° 180 °
Good
4. Set in the REV mode and repeat the step 1 to 3.
5. After the adjustment, lock the screws with locking compound.
Adjustment Location:
deck A
screw
driver
12
oscilloscope
32 Ω
V H
+
+
–
–
32 Ω
PHONES jack (J301)
Wrong
deck B
Tape Speed Adjustment
Procedure:
Mode: FWD/REV playback (DECK A)
FWD playback (DECK B)
test tape
WS-48B
(3kHz, 0 dB)
set
Adjustment Values:
Adjustment part Frequency counter
RV302
Frequency difference between the beginning and the end of the
tape should be within 1% (30 Hz)
Note: (High speed: non Adjustment)
Adjustment Location: MAIN board (See page 14)
DECK-A DECK-B
frequency
counter
32 Ω
– +
PHONES jack (J301)
2,910 to 3,090 Hz