Pioneer CT-1060W Service Manual page 26

CT-1IO6GOW, CT-S77W
Deck |
1. Head Azimuth Adjustment
e@ Turn V102 and V202 to mechanical center positions.
Input signal & test tape Adjustment location Adjustment value
1 PLAY Play the 10kHz/—20dB section Head azimuth adjust- | Left and right OUT- Maximum playback signal
of the STD-331B test tape. ment screw. PUT terminals. level.
(See Fig. 10-5)
2 STOP Lock the screw with screw lock after completing the adjustment.
2. Playback Equalizer Check
Input signal & test tape Adjustment location Adjustment value
PLAY Play the 315Hz/—20dB and Left andright OUT- | The 6.3kHz playback
6.3kHz/—20dB section of PUT terminals. level is O£2dB
3. Playback Time Constant Switching Check
the STD-331B test tape. against 315Hz level.
e Put the deck into playback mode with no cassette loaded.
Confirm
e@ Check that the noise level changes at the line playback output terminals when the chrome detector switch in the top of the tape transport
unit is switched on and off.
4. Playback Level Adjustment
® This adjustment determines the DOLBY NR level, and must be performed with great care.
Input signal & test tape Adjustment location Adjustment value
PLAY Play the 315Hz/OdB section of | V101 (Left channel) TP1 (L ch) -7.7dBv (412mV)
the STD-331B test tape. V201 (Right channel) TP2 (R ch)
{ v203
Oa ~ ad
py
Fig. 10-7 Adjustments locations
36