— 11 —
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads
pinch rollers
erase head
rubber belts
capstan
idlers
2. Demagnetize the record/playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power supply
voltage unless otherwise noted.
Torque Measurement
SECTION 5
ELECTRICAL ADJUSTMENTS
DECK SECTION
0 dB=0.775V
1. Demagnetize the record/playback head with a head damagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjusted.
4. The adjustments should be performed with the rated power supply
voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6. The adjustments should be performed for both L-CH and R-CH.
7. Switches and controls should be set as follows unless otherwise
specified.
DOLBY NR switch: OFF
2 to 6 g • cm
(0.02 - 0.08 oz • inch)
61 to 143 g • cm
(0.85 - 1.99 oz • inch)
100 g or more
(3.53 oz or more)
100 g or more
(3.53 oz or more)
SECTION 4
MECHANICAL ADJUSTMENTS
Torque
Torque meter
Meter reading
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
36 to 61 g • cm
(0.5 - 0.84 oz • inch)
2 to 6 g • cm
(0.02 - 0.08 oz • inch)
36 to 61 g • cm
(0.5 - 0.84 oz • inch)
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note:
Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
test tape
P-4-A100
(10kHz, –10dB)
main board
CN403
Pin
3
(L-CH)
Pin
1
(R-CH)
main board
CN403
Pin
2
(GND)
level meter
+
–
Signal
Used for
10 kHz, –10 dB
3 kHz, 0 dB
315 Hz, 0 dB
Azimuth Adjustment
Tape Speed Adjustment
Level Adjustment
Tape
P-4-A100
WS-48B
P-4-L300
set
www.freeservicemanuals.info
It`s free
All over the world
Summary of Contents for HCD-H991AV
Page 19: ...www freeservicemanuals info It s free All over the world ...
Page 20: ...www freeservicemanuals info It s free All over the world ...
Page 21: ...www freeservicemanuals info It s free All over the world ...
Page 22: ...www freeservicemanuals info It s free All over the world ...
Page 23: ...www freeservicemanuals info It s free All over the world ...
Page 24: ...www freeservicemanuals info It s free All over the world ...
Page 25: ...www freeservicemanuals info It s free All over the world ...
Page 26: ...www freeservicemanuals info It s free All over the world ...
Page 27: ...www freeservicemanuals info It s free All over the world ...
Page 28: ...www freeservicemanuals info It s free All over the world ...
Page 29: ...www freeservicemanuals info It s free All over the world ...
Page 30: ...www freeservicemanuals info It s free All over the world ...
Page 31: ...www freeservicemanuals info It s free All over the world ...
Page 32: ...www freeservicemanuals info It s free All over the world ...
Page 33: ...www freeservicemanuals info It s free All over the world ...
Page 34: ...www freeservicemanuals info It s free All over the world ...
Page 35: ...www freeservicemanuals info It s free All over the world ...
Page 36: ...www freeservicemanuals info It s free All over the world ...
Page 37: ...www freeservicemanuals info It s free All over the world ...
Page 38: ...www freeservicemanuals info It s free All over the world ...
Page 39: ...www freeservicemanuals info It s free All over the world ...
Page 40: ...www freeservicemanuals info It s free All over the world ...
Page 45: ...www freeservicemanuals info It s free All over the world ...
Page 46: ...www freeservicemanuals info It s free All over the world ...
Page 47: ...www freeservicemanuals info It s free All over the world ...
Page 48: ...www freeservicemanuals info It s free All over the world ...
Page 85: ...www freeservicemanuals info It s free All over the world ...
Page 86: ...www freeservicemanuals info It s free All over the world ...
Page 87: ...www freeservicemanuals info It s free All over the world ...
Page 88: ...www freeservicemanuals info It s free All over the world ...
Page 89: ...www freeservicemanuals info It s free All over the world ...
Page 90: ...www freeservicemanuals info It s free All over the world ...
Page 91: ...www freeservicemanuals info It s free All over the world ...
Page 92: ...www freeservicemanuals info It s free All over the world ...
Page 93: ...www freeservicemanuals info It s free All over the world ...
Page 94: ...www freeservicemanuals info It s free All over the world ...
Page 95: ...www freeservicemanuals info It s free All over the world ...
Page 96: ...www freeservicemanuals info It s free All over the world ...
Page 97: ...www freeservicemanuals info It s free All over the world ...
Page 98: ...www freeservicemanuals info It s free All over the world ...
Page 99: ...www freeservicemanuals info It s free All over the world ...
Page 100: ...www freeservicemanuals info It s free All over the world ...