Panasonic SL-CT579VP Service Manual
Portable CD Player
SL-CT579VP
Colour
(S)..........Silver Type
AD0507055CE
J1
© 2005 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SL-CT579VP
CONTENTS
Page Page
1 Accessories 3
2 Location of Controls
3 Precaution of Laser Diode
4 Schematic Diagram Notes
3
5 Schematic Diagram
3
6 Replacement Parts List
4
5
11
2
1 Accessories
Stereo headphones
·
(L0BAD0000177)...........................................1 pc.
2 Location of Controls
SL-CT579VP
3 Precaution of Laser Diode
Caution:
This product utilizes a class 1 laser. Invisible laser radiation is emitted from the optical pick-up lens when the unit is turned on:
1. Do not look directly into the pick-up lens.
2. Do not use optical instruments to look at the pick-up lens.
3. Do not adjust the preset variable resister on the optical pick-up.
4. Do not disassemble the optical pick-up unit.
5. If the optical pick-up is replaced, use the manufacture’s specified replacement pick-up only.
6. Use of control or adjustments or performance of procedures other than those specified herein may result in hazardous
radiation exposure.
3
SL-CT579VP
4 Schematic Diagram Notes
· This schematic diagram may be modified at any time
with the development of new technology.
Notes:
S1:
S2:
S3:
S4:
S5:
S6:
S7:
S8:
S9:
S10:
S11:
S12:
S201:
S202:
S310:
VR1101:
Sound quality selection (EQ) switch
Tuning, R.skip/search
(
Sensitivity control, play mode selection
(PLAY MODE
Monaural/stereo (FM MODE/
MONO/ST) switch
Volume control switch (VOL+)
Stop/turn off (
Tuning, F.skip/search
(
Memory/Recall/Digi tal Re-master/Antiskip mode selection
(MEMORY/RECALL) switch
Volume control switch (VOL-)
Tuning mode selection (TUNING
MODE) switch
Tuner on/band select (RADIO/BAND)
switch
Play/pause (
Laser ON/OFF switch in ON position
(It turns ON with disc holder closed.)
Rest detector switch in OFF position
(It turns ON when optical pick-up
comes to innermost periphery.)
Hold (HOLD) switch in OFF position
FM RF adjustment VR
/ -) switch
CITY/NOR) switch
,TURN OFF) switch
/ +) switch
) switch
Important safety notice:
·
Components identified by
characteristics important for safety.
Furthermore, special parts which have purposes of fireretardant (resistors), high-quality sound (capacitors), lownoise (resistors), etc. are used.
When replacing any of components, be sure to use only
manufacturer’s specified parts shown in the parts list.
The supply part number is described alone in the
·
replacement parts list.
Voltage and signal line
·
: Positive voltage line
: Main (CD, FM) signal line
: FM signal line
: CD Playba ck signal line
Circuit voltage and waveform described herein shall be
·
regarded as reference information when probing defect
point, because it may differ from an actual measuring value
due to difference of Measuring instrument and its
measuring condition and product itself.
Measurement conditions:
AC adaptor is used for power supply.
−
−
− −
Set the hold switch to ON.
−
−
− −
No mark : CD stop mode
: CD playba ck mode
(Test disc 1kHz, L+R, 0dB)
: FM mode
: AM mode
Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conduc tive mat on the work table.
Do not touch the legs of IC or LSI with the fingers directly.
mark have special
4
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