Pioneer XV-GX3, Service Manual

Page: 58 / 96

XV-GX3
58
1 2 3 4
1 2 3 4
C
D
F
A
B
E
6.1.2 PLAYBACK and RECORDING SECTION
NCT-111 (3kHz)
or
STD-301 (3kHz) ADJ. VR on
CASSETTE MECHA
(Refer to Fig. 6-3)
No. Mode Input Signal/Test Tape Adjustment Points Measurement Points Adjustment Value Remarks
PLAY 1
LINE OUT R (JA3001)
(MAIN ASSY)
3000 Hz Hz
(1) Tape Speed Confirmation
(1) Recording Bias Adjustment
¶
After the adjustment, caution should be exercised so as not to become under bias by checking the distortion rate.
NCT-112 or STD-331E
(Playback: 10 kHz, –20 dB)
Head azimuth
adjustment Screw
(Refer to Fig. 6-3)
Remarks
PLAY 1
LINE OUT L (JA3001)
LINE OUT R (JA3001)
(MAIN ASSY)
LINE OUT L (JA3001)
LINE OUT R (JA3001)
(MAIN ASSY)
Max. Playback
signal level
(2) Head Azimuth Adjustment
¶
This unit is equipped with auto tape selector.
¶
Do not switch between forward and reverse operation with the screwdriver inserted.
+10
–10
Playback Section
After adjustment, apply silicon
bond to the head azimuth
adjustment screw.
Recording Section
VR2801
REC/
PAUSE
1
Input a 315Hz signal to the LINE -
IN terminal.
∗
L ch
R ch
VR2802
Input signal level
–23.7 dBV
REC
=
PLAY
2
Load the STD–630 or 631 test tape
and record / playback the 315Hz
and 10KHz signals.
(see the Note below)
Repeat adjustment until playback level of
the 10kHz signal is within 0dBV
±
0.5dB
from that of the 315Hz signal.
Note: Set the 10kHz input signal level to the same value as the 315Hz input signal level of step 1.
No. Mode Input Signal/Test Tape Adjustment Points
Measurement
Points
Adjustment
Value
Remarks
No. Mode Input Signal/Test Tape Adjustment Points
Measurement
Points
Adjustment
Value
FWD adjustment
REV Confirmation
( 3000 Hz Hz)
+40
–40
7
7