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PC-Y777 B/E/G
Rec./playback
becomes O +1 dB at 10 kHz at DOLBY
OUT TP.
=
Item
Measuring Conditions and Main Adjustments
Standard Value
Adjusting Point
Bias
[Conditions]
68 kHz+3 kH
frequency
1. Measuring point : BIAS TP
.
EEA
confirmation
|2- Mode : Mechanism A ... REC/PAUSE
(Beat cut
1724
[Adjustment]
switch: 1)
Connect the frequency counter to the BIAS TP through a 100 kQ,
B. switch 2:
then adjust L721 so that the counter reads 68 kHz +0.5 kHz.
#0 des #1 kHz
B. switch 3:
66 kHz +1 kHz
| Recording and | [Conditions]
playback
Record and play back measuring tape TS-12 on Deck A at CD | 1 kHz/100 Hz:
L VR122
frequency
IN REF — 20 cB.
—7+4 dB
R VR222
response
[Adjustments]
1 kHz/8 kHz:
confirmation
|Adjust VR122
and VR222
so that the Record/Play
output;
O+4 dB
[Conditions]
1. Mode: REC, PLAY
..... Mechanism A
3. Measuring point: input ..... CD out jack in
output ... TP; CN709 connector
1. Reference signal 1 kHz; — 5 dBs to be applied to CD out jack
2. Adjust the VR121
(L ch) and VR221
(R ch) so that 1 kHz
sensitivity
adjustment
2. Test tape: UR (TS8)
[Adjustment]
in.
a
= ee
— 5 dBs against monitor level becomes O + 1 dB.
O+
1dB
a
a
L ch: VR121
R ch: VR221
So
A
(No. 1802)
17
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