Read Panasonic SL-CT720P / SL-CT720PC / SL-CT720EB / SL-CT720EE / SL-CT720EG Service Manual online
·
This schematic diagram may be modified at any time
with the development of new technology.
with the development of new technology.
Notes:
S201:
Laser ON/OFF switch in ON position
(It turns ON with disc holder closed.)
(It turns ON with disc holder closed.)
S202:
Rest detector switch in OFF position
(It turns ON when optical pick-up
comes to innermost periphery.)
(It turns ON when optical pick-up
comes to innermost periphery.)
S301:
Play/pause (
) switch
S302:
Volume control switch (VOL-)
S303:
Volume control switch (VOL+)
S304:
R.skip/search (
) switch
S305:
F.skip/search (
) switch
S308:
Stop/turn off (
) switch
S310:
Hold (HOLD) switch in OFF position
·
Important safety notice:
Components
identified
by
mark
have
special
characteristics important for safety.
Furthermore, special parts which have purposes of fire-
retardant (resistors), high-quality sound (capacitors), low-
noise (resistors), etc. are used.
retardant (resistors), high-quality sound (capacitors), low-
noise (resistors), etc. are used.
When replacing any of components, be sure to use only
manufacturer’s specified parts shown in the parts list.
manufacturer’s specified parts shown in the parts list.
·
The supply part number is described alone in the
replacement parts list.
replacement parts list.
·
Voltage and signal line
: Positive voltage line
: Playback 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
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.
−
−
−
−
The parenthesized is the voltage for test disc (1 kHz,
L+R, 0 dB) in play mode, and the other, for no disc in
stop mode.
L+R, 0 dB) in play mode, and the other, for no disc in
stop mode.
Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conductive mat on the work table.
Do not touch the legs of IC or LSI with the fingers directly.
9 Type Illustration of ICs, Transistors and Diodes
C0CBAFD00003
C0DBAFE00017
C0CBCBZ00001
C0DBAFE00017
C0CBCBZ00001
B1ABMD000004
UMG6NTR
2SB709ATX
2SD1819ATX
DTA143EUA106
UN5214TX
UN5115TX
UN5111TX
UN5114TX
2SD1819ATX
DTA143EUA106
UN5214TX
UN5115TX
UN5111TX
UN5114TX
B1CFHA000002
B1CHMC000007
B1CHGD000006
B1CHMC000007
B1CHGD000006
1
3
4
5
2
No.1
No.1
C
B
C
E
B
C
B
C
E
E
C
B
S
D
G
2SB1182TLPQR
B3AAB0000037
C
B
E
C
B
E
C0DBAFG00014
C3EBCG000096
C3ABPG000145
C3EBCG000096
C3ABPG000145
24PIN
8PIN
54PIN
MA111TX
A
Ca
Anode
Cathode
MN6627962JB
C0GBF0000017
C2BBGF000656
C0GBF0000017
C2BBGF000656
128PIN
48PIN
80PIN
80PIN
B1GFGCAA0001
Ca
A
Cathode
Anode
MA8056MTX
A
Ca
Anode
Cathode
C
C
E
E
B
B
D
G
S
XP161A1355PR
B0JCDD000002
Anode
Cathode
A
Ca
MA729TX
A
Ca
Anode
Cathode
10 Schematic Diagram Notes
13
SL-CT720P / SL-CT720PC / SL-CT720EB / SL-CT720EE / SL-CT720EG
Click on the first or last page to see other SL-CT720P / SL-CT720PC / SL-CT720EB / SL-CT720EE / SL-CT720EG service manuals if exist.