DOWNLOAD Sony CX-LEM300 / XR-EM300 Service Manual ↓ Size: 3.22 MB | Pages: 40 in PDF or view online for FREE

Model
CX-LEM300 XR-EM300
Pages
40
Size
3.22 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cx-lem300-xr-em300.pdf
Date
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Sony CX-LEM300 / XR-EM300 Service Manual ▷ View online

9
CX-LEM300
3-4. CONTROL Board
3-5. Tape Mechanism Deck
3
three screws
(+BTP3 
×
 10)
1
knob volume
4
CONTROL board
2
four screws
(+BVTP3 
×
 10)
1
wire (flat type) 7p (CN101)
2
three screws
(+BVTP3 
×
 10)
3
tape mechanism deck
10
CX-LEM300
3-6. Cassette Door Assy
3-7. POWER Board, MAIN Board
1
Open the cassette door assy.
3
cassette door assy
claw
2
1
connector
(AC IN)
2
connector
(CN901)
5
two screws
(+BVTP3 
×
 10)
3
four screws
(+BVTP4 
×
 12)
6
MAIN board
4
POWER board
11
CX-LEM300
3-8. Optical Pick-up (KSS-213E/C2N)
2
gear (A)
1
claw
5
sled shaft
6
KSS-213E/C2N
4
3
12
CX-LEM300
SECTION  4
MECHANICAL ADJUSTMENTS
•
  TAPE MECHANISM DECK SECTION
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 demagne-
tizer.
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
2.94 mN • m to 7.84 mN • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.14 mN • m to 0.59 mN • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
6.86 mN • m to 17.64 mN • m
71 to 143 g • cm
(0.98 – 1.99 oz • inch)
more than 0.98 N • m
100 g or more
(3.53 oz or more)
Mode
Torque meter
CQ-102C
CQ-102C
CQ-201B
CQ-403A
Meter reading
FWD
FWD
back tension
FF/REW
FWD tension
SECTION  5
ELECTRICAL  ADJUSTMENTS
Precaution
1. Demagnetize the record/playback head with a head demagne-
tizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjust.
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 ad-
justment 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 other-
wise specified.
• Test Tape
Tape
Signal
Used for
P-4-A100
10 kHz, – 10 dB
Azimuth Adjustment
WS-48B
3 kHz, 0 dB
Tape Speed Check
0 dB = 0.775 V
DECK  SECTION
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