Read Sony CHC-P33D / HCD-H33D Service Manual online
– 11 –
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
record/playback head
pinch roller
erase head
rubber belts
capstan
idlers
2. Demagnetize the record/playback head with a head
damagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power sup-
ply voltage unless otherwise noted.
•
Torque Measurement
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
DECK SECTION
1. The adjustment should be performed in the publication.
(Be sure to make playback adjustment at first.)
2. The adjustment and measurement should be performed for both
L-CH and R-CH.
•
Switch position
DOLBY NR switch
: OFF
TIMER switch
: OFF
DIRECTION MODE switch :
A
3. Deck section electrical adjustment are made in test mode by
pressing TUNER/BAND, DISPLAY, and FUNCTION at the
same time.
same time.
– Record Mode –
set
MD IN
600
Ω
attenuator
AF OSC
+
–
–
level meter
MD OUT
Tape
Contents
Use
P-4-A100
10 kHz, –10 dB
Head Azimuth Adjustment
P-4-L300
315 Hz, 0 dB
Level Adjustment
WS-48B
3 kHz, 0 dB
Tape Speed Adjustment
0dB = 0.775V
Record/Playback Head Azimuth Adjustment
DECK A
DECK B
•
Setup for adjustment
When adjusting the azimuth, remove the Window (DIS) in the
center of the front panel. (Refer to page 7.)
center of the front panel. (Refer to page 7.)
Procedure :
1.
Mode : Forward Playback
• Test Tape
Mode
Torqu Meter
Meter Reading
Foward
CQ-102C
36 to 61 g•cm
(0.50 – 0.84 oz•inch)
Forward
CQ-102C
2 to 6 g•cm
Back Tension
(0.026 – 0.082 oz•inch)
Reverse
CQ-102RC
36 to 61 g•cm
(0.50 – 0.84 oz•inch)
Reverse
CQ-102RC
2 to 6 g•cm
Back Tension
(0.026 – 0.082 oz•inch)
FF, REW
CQ-201B
61 to 143 g•cm
(0.85 – 1.98 oz)
Mode
Torque Meter
Meter Reading
Forward
CQ-403A
more than 100 g (3.53 oz)
Reverse
CQ-403R
more than 100 g (3.53 oz)
•
Tape Tension Measurement
set
+
–
–
test tape
P-4-A100
(10 kHz, –10 dB)
P-4-A100
(10 kHz, –10 dB)
MD OUT
level meter
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