DOWNLOAD Sony HCD-RX33 Service Manual ↓ Size: 807.86 KB | Pages: 40 in PDF or view online for FREE

Model
HCD-RX33
Pages
40
Size
807.86 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-rx33.pdf
Date

Sony HCD-RX33 Service Manual ▷ View online

— 7 —
1
 Screw
 
(+P 2.6 
×
 4) 
2
 Bracket
4
 Bracket
5
 Flat type wire
     (CN06)
3
 Screw
 
(+P 2.6 
×
 4)
6
 CD tray
1
 Two screws (+BVTP 3 
×
 10) 
2
 Two screws (+BVTP 3 
×
 10) 
Two claws
7
 CD DECODER board
3
 Belt
6
 Flat type wire (CN06)
5
 Flat type wire (CN01)
4
 Connector (CN05)
 Connector (CN03)
8
 Two screw
      (+BVTP 3 
×
 10) 
9
 Sheet
Claw
Claw
2-5. CD TRAY
2-6. CD DECODER BOARD
— 8 —
2
 Screw
 
(+PTPWH 2.6 
×
 8) 
3
 UD-gear
4
 Screw
 
(+PTPWH 2.6 
×
 8) 
5
 UD-Cam
8
 Spring 
7
 Spring
6
 Spring 
1
 Two screws
 
(+KTP 3 
×
 8)
9
 Base unit
Four claws
Four claws
2
 Cassette lid (R)
1
 Cassette lid (L)
2-7. BASE UNIT
2-8. CASSETTE LID (L) / (R)
— 9 —
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback head
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 3
MECHANICAL ADJUSTMENTS
Meter reading
40 to 70 g • cm
(0.56 - 0.97 oz • inch)
1 to 5 g • cm
(0.01 - 0.07 oz • inch)
55 to 140 g • cm
(0.76 - 1.94 oz • inch)
Torque
FWD
FWD
back tension
FF/REW
Torque meter
CQ-102C
CQ-102C
CQ-201B
SECTION 4
ELECTRICAL ADJUSTMENTS
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.
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1.
Mode : Playback
DECK SECTION
0 dB=0.775V
Tape
P-4-A100
WS-48B
Signal
10 kHz, –10 dB
3 kHz, 0 dB
Used for
Azimuth Adjustment
Tape Speed Adjustment
test tape
P-4-A100
(10kHz, –10dB)
SPEAKER
terminal (JK501)
level meter
+
set
— 10 —
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 2 dB of peak.
3.
Mode: Playback
4.
After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Remove the cassette lid before adjustment (See page 8)
test tape
WS-48B
(3kHz, 0dB)
Tape Speed Adjustment (Deck A)
Procedure:
1.
Mode: Playback
2.
Adjust the SFR201 so that the frequency counter reads 3,000
Hz ± 90Hz.
Adjustment Location: MAIN board
Sample  Value of  Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
[MAIN BOARD] — Component side —
CN204
L-CH
peak
R-CH
peak
screw
position
output
level
within
2dB
within 2dB
L-CH
peak
screw
position
R-CH
peak
test tape
P-4-A100
(10kHz, –10dB)
SPEAKER
terminal (JK501)
(L-CH)
set
L
R
oscilloscope
SPEAKER
terminal (JK501)
(R-CH)
Waveform of oscilloscope
in phase
45˚
90˚
135˚
180˚
good
wrong
SPEAKER
terminal (JK501)
set
frequency counter
+
SFR201
Tape Speed
Adjustment screws
REC/PB head (deck A)
or PB head (deck B)
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