Sharp XL-35 (serv.man21) Service Manual ▷ View online
– 13 –
XL-35H
7. Key input diagnosis Test Mode (TEST 6)
When the test mode is set, the following indication appears.
ERROR LIST
PU-IN SW detection error
CD read error
Error content ........... Disc data cannot be read properly or
even if it can be read, the disc is not a
playable one.
playable one.
Probable cause ....... The disc is loaded upside down, not CD-
DA, scratches, stains, etc.
Action ...................... Open the CD lid, then reload the disc
correctly. Remove the scratches or stains
on the disc.
on the disc.
NO DISC
Tape mechanism error 1
Tape mechanism error 2
Error content ............ The detection SW cannot detect ON
after a fixed period of time even if the
microcomputer controls the CD pickup
to return to the innermost position.
microcomputer controls the CD pickup
to return to the innermost position.
Probable cause ........ Defective or poorly connected PU-IN
SW or slide motor.
Action ....................... Solve the problem and turn on the power
again.
Error content ........... Focusing is impossible.
Probable cause ....... The disc is loaded upside down, not CD-
Probable cause ....... The disc is loaded upside down, not CD-
DA, scratches, stains, etc.
Action ...................... Open the CD lid, then reload the disc
correctly. Remove the scratches or stains
on the disc.
on the disc.
Error content ........... The detection SW "CAM-SW" cannot
detect ON (mechanism in operation) even
if the motor and solenoid are controlled
to play back, fast forward, rewind, or
record the tape.
if the motor and solenoid are controlled
to play back, fast forward, rewind, or
record the tape.
Probable cause ....... Mechanism is in operation when this
message appears: Defective or poorly
connected CAM-SW. Mechanism stops:
Defective or poorly connected motor or
solenoid.
connected CAM-SW. Mechanism stops:
Defective or poorly connected motor or
solenoid.
Action ...................... Solve the problem and turn on the power
again.
Error content ........... Initialization cannot be completed when
the microcomputer controls the motor
and solenoid to initialize the tape
mechanism (to set the mechanism to the
stop mode). The detection SW "CAM-
SW" cannot detect OFF While the
mechanism is in operation.
and solenoid to initialize the tape
mechanism (to set the mechanism to the
stop mode). The detection SW "CAM-
SW" cannot detect OFF While the
mechanism is in operation.
Probable cause ....... Mechanism is in operation when this
message appears: Defective or poorly
connected CAM-SW. Mechanism stops:
Defective or poorly connected motor or
solenoid.
connected CAM-SW. Mechanism stops:
Defective or poorly connected motor or
solenoid.
Action ...................... Solve the problem and turn on the power
again.
This test mode is intended to check whether all the main unit buttons can be detected. Accordingly, in this test mode checking
as to whether the "ON/STAND-BY" button was pressed after all the buttons shown below were pressed is performed. If the result
is OK, OK is indicated. Even any one of keys was not pressed, an error is indicated. In case of OK termination or error termination
exit from this mode occurs when the "ON/STAND-BY" button is pressed next time, and the standby mode is set.
as to whether the "ON/STAND-BY" button was pressed after all the buttons shown below were pressed is performed. If the result
is OK, OK is indicated. Even any one of keys was not pressed, an error is indicated. In case of OK termination or error termination
exit from this mode occurs when the "ON/STAND-BY" button is pressed next time, and the standby mode is set.
1. In case of "MEMORY/SET" + "PLAY"+ "ON/STAND-BY"
Since SURROUND and RDS are not provided, the following 9 buttons are detected as all buttons.
PLAY, ON/STAND-BY, BAND, BASS/TREBLE, FUNCTION, MEMORY/SET, REC PAUSE, REW, FF, STOP.
PLAY, ON/STAND-BY, BAND, BASS/TREBLE, FUNCTION, MEMORY/SET, REC PAUSE, REW, FF, STOP.
The OK/NG indication of test result is as follows.
XL-35H
– 14 –
SW700
VOLUME
ON—OFF
SW701
ON/STAND-BY
ON—OFF
SW702
FUNCTION
ON—OFF
SW703
STOP/CLEAR,TUNING DOWN
ON—OFF
SW704
PLAY/CD STOP,TUNING UP
ON—OFF
SW705
BASS/TREBLE
ON—OFF
SW706
MEMORY/SET
ON—OFF
•
The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
sis with no signal given.
1. In the tuner section,
( ) indicates AM
< > indicates FM stereo
< > indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
5. In the CD section, the CD is stopped.
•
Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
•
Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
•
Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolytic capacitor, the expression “capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolytic capacitor, the expression “capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•
Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
notice.
REF. NO
DESCRIPTION
POSITION
POSITION
REF. NO
DESCRIPTION
SW707
REC/PAUSE
ON—OFF
SW708
REW/PRESET DOWN
ON—OFF
SW709
FF/PRESET UP
ON—OFF
SW800
PICKUP IN
ON—OFF
SW801
CD LID OPEN/CLOSE
ON—OFF
SW901
FOOL PROOF
ON—OFF
SW902
CAM
ON—OFF
E C B
(1) (2) (3)
FRONT
VIEW
FRONT
VIEW
VIEW
B C E
FRONT
VIEW
2HA1015 GR
2HC1815 GR
2SC2001 K
HSB562 C
KRA102 M
KRC102 M
KRC104 M
KRC107 M
SC1674 C
2HC1815 GR
2SC2001 K
HSB562 C
KRA102 M
KRC102 M
KRC104 M
KRC107 M
SC1674 C
KTC2026 Y
MPG3372X
SVC348S
KDV147B
KDV147B
1 2 3
TYPES OF TRANSISTOR AND LED
Figure 14 TYPES OF TRANSISTOR AND LED
– 15 –
XL-35H
WAVEFORMS OF CD CIRCUIT
NO DISC FOCUS SEARCH
FOO
RFDET
ARF
FE
IC804 27pin
FO+
IC804 26pin
FO-
IC801 28pin
STOP PLAY(FE)
CUE(TE)
REVIEW(TE)
TCD-782 JNO-02 PLAYBACK
1
2
3
IC801 38pin
4
IC801 44pin
5
IC801 32pin
6
TRO
FMO
TE
STOP PLAY(TE)
IC801 27pin
7
IC804 3pin
8
IC801 33pin
9
TRO
FMO
TE
IC801 27pin
7
IC804 3pin
8
IC801 33pin
9
TRO
FMO
TE
IC801 27pin
7
IC804 3pin
8
IC801 33pin
9
OUTL
OUTR
IC801 73pin
10
IC801 75pin
11
Figure 15-1
Figure 15-2
Figure 15-3
Figure 15-4
Figure 15-5
Figure 15-6
XL-35H
– 16 –
REC MUTE
Q105
Q106
Q106
REC
150K
150K
MUTE
ALC
+
-
-
+
3
1
5
11
12
8
10
2
IC102
BA3311L
BA3311L
6
7
9
NF
L-IN
R-IN
NF
L-OUT
ALC
R-OUT
Q151
Q152
L151
Q153
Q171
Q172
REC
SWITCHING
Q101-Q104
SWITCHING
1
IC101
IC101
HEAD SELECTOR
BA3126N
2
3
4
5
6
9
REC SW
P/B SW
CONT
P/B SW
REC SW
8
7
A-12V
L-CH
R-CH
R-CH
L-CH
L-CH
L-CH
A-GND
A-GND
A-GND
R-CH
R-CH
ERASE
CNP101
CNS101
CNS901
P.F
CAM SW
Q906
BIAS
REC
RUN_PLS
MOT
SOL
U_CON 5V
D-GND
A_12V
TAPE SW
1
2
3
4
5
6
7
CNP901
PH901
PHOTE INTERRUPTER
SW901
FOOL
PROOF
FOOL
PROOF
SW902
CAM
CAM
1
CFW901
2
+
-
2
1
M
M901
TAPE MOTOR
SOLENOID
SOL901
TO DISPLAY PWB
Q904
Q902
A_12V
A_12V
SWITCHING
B-CAN(NC)
10
1 2 3 4 5 6 7 8 9
CNP703
M_GND
Q903
Q905
Q901
CF352
CF351
FM IF
FM IF
24 22
21 20 19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
IC303
LA1832S
22
21
20
17
16
15
14
13
12
1 2
3
4
5
6
7 8 9
10
11
IC302
LC72131
X352
X351
456kHz
456kHz
X IN
NC
CE
DI
CL
MO/ST
FM
FM
DO
CE
DI
CL
DO
FM IN
X OUT
VSS
AOUT
VDD
AM IN
NC
IF IN
IF REQ
SW
VCC
AM ANT
AM OSC.
VD301-1
SVC348S
SVC348S
VD301-2
SVC348S
SVC348S
VR351
10K(B)
10K(B)
FM MUTE LEVEL
23
T351
+5V
AM IF
MUTE
R-MUTE
MO/ST
L-CH OUT
R-CH OUT
MPX VCO
AM LOW CUT
FM/AM OUT
MPX IN
AM OSC OUT
FM AFC
AM RF IN
VSM
AM OSC IN
AM MIX OUT
AM IF IN
GND
REG
FM IF IN
SD
STEREO
FM DET
PHASE
(AM/FM)
IF OUT
PHASE
FM IF DET./FM MPX./AM IF
4.5MHz
Q351
SWITCHING
R_MUTE
PLL (TUNER)
ZD351
Q360
FM+B
A_12V
3
1
VT
CF302
FM IF
AM OSC OUT
AM MIX OUT
A_GND
+5V
A_12V
D_GND
REC BIAS
CONT
CONT
SWITCHING
SWITCHING
RUN PLS
SOL
M_12V
U_CON5V
MOT
SWITCHING
SWITCHING
SWITCHING
TAPE MOTOR
DRIVER
SOLENOID
DRIVER
BIAS OSC
SWITCHING
AM IF IN
1
2
3
4
5
6
7
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
L-CH
R-CH
ERASE
HEAD
RECORD/
PLAYBACK
HEAD
T302
T306
1
2
3
IC102
REC./P.B.
EQUALISER
AMP.
REC./P.B.
EQUALISER
AMP.
9
7
8
6
5
4
3
2
3
2
1
1
VT
Q306
Q302
CF303
T304
BF301
10.7MHz
IC301
FM FRONT END
TA7358AP
BAND
PASS
PASS
FILTER
L303
VD302
L302
VD303
FM RF
FM IF
FM IF
FM IF AMP.
FM OSC
VT
TP301
1
2
AM/FM
ANTENNA
TERMINALS
CNP301
3
Figure 16 BLOCK DIAGRAM (1/4)
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