Download  Print this page

Mechanical Adjustments; Electrical Adjustments - Sony HCD-EP50LIV Service Manual

Hide thumbs

Advertisement

QQ

MECHANICAL ADJUSTMENTS

3 7 63 1515 0
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head
erase head
capstan
2. Demagnetize the record/playback head with a head demagne-
tizer. (Do not bring the head magnetizer close to the erase head.)
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
Mode
FWD
FWD
Back Tension
FF
REW
• Tape Tension Measurement
TE
L 13942296513
Mode
FWD
www
.
http://www.xiaoyu163.com
SECTION 4
PRECAUTION
pinch roller
rubber belts
idlers
Torque Meter
Meter Reading
2.95 – 6.86 mN•m
CQ-102C
(30 – 70 g•cm)
(0.42 – 0.97 oz•inch)
0.15 – 5.39 mN•m
CQ-102C
(1.5 – 5.5 g•cm)
(0.021 – 0.076 oz•inch)
more than 5.89 mN•m
CQ-201B
(more than 60 g•cm)
(more than 0.83 oz•inch)
more than 5.89 mN•m
CQ-201B
(more than 60 g•cm)
(more than 0.83 oz•inch)
Tension Meter
Meter Reading
more than 100 g
CQ-403A
(more than 3.53 oz)
x
ao
y
i
http://www.xiaoyu163.com

ELECTRICAL ADJUSTMENTS

8
1. Setting
MEGA BASS switch : OFF
TAPE DECK SECTION
Test tape
Type
P-4-A100
WS-48B
Record/Playback Head Azimuth Adjustment
Procedure:
1. Mode: Playback (FWD)
test tape
P-4-A100
(10 kHz, –10 dB)
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.
Q Q
3
6 7
1 3
L-CH
peak
Screw
position
3. Mode: Playback (FWD)
test tape
P-4-A100
(10 kHz, –10 dB)
u163
4. Repeat step 1 to 3 in playback (REV) mode.
5. After the adjustments, apply suitable locking compound to the
.
parts adjusted.
HCD-EP50LIV
SECTION 5
2 9
9 4
2 8
PRECAUTION
0 dB=0.775 V
Signal
10 kHz, –10 dB
Head Azimuth Adjustment
3 kHz, 0 dB
Tape Speed Adjustment
level meter
47 k Ω
set
MAIN board
SPEAKER terminal (CN17)
within
1 5
0 5
8
2 9
9 4
1dB
Output
level
R-CH
peak
L-CH
R-CH
peak
peak
47 k Ω
L-CH
set
47 k Ω
R-CH
MAIN board
SPEAKER terminal (CN17)
screen pattern
45 °
90 ° 135 ° 180 °
in phase
m
good
wrong
co
9 9
Used for
+
2 8
9 9
within
1dB
Screw
position
oscilloscope
V
H
+ +
– –
11

Advertisement

Table of Contents

Comments to this Manuals

Symbols: 0
Latest comments: