Sharp XL-40 Service Manual ▷ View online
– 17 –
XL-40H/50H
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 "POWER" 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 "POWER" button is pressed next time, and the standby mode is set.
as to whether the "POWER" 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 "POWER" button is pressed next time, and the standby mode is set.
1. In case of XL-40H/50H
The following 15 buttons are detected as all buttons.
PLAY, JOG MODE, BAND, BASS/TREBLE, FUNCTION, MEMORY/SET, REC PAUSE, REW, FF, STOP, CLOCK/TIMER/
SLEEP,PTY-TI, EON, APMS, DISPLAY
PLAY, JOG MODE, BAND, BASS/TREBLE, FUNCTION, MEMORY/SET, REC PAUSE, REW, FF, STOP, CLOCK/TIMER/
SLEEP,PTY-TI, EON, APMS, DISPLAY
The OK/NG indication of test result is as follows.
7. Key input diagnosis Test Mode (TEST 6)
When the test mode is set, the following indication appears.
6. LCD Test Mode (TEST 5)
When the LCD test mode is set, all the LCD segments are lighted. After that the indication is changed as follows according to
the "PLAY" button input.
the "PLAY" button input.
Lighting of all segments Lighting of odd segments Lighting of even segments
XL-40H/50H
– 18 –
NSW801
PICKUP IN
ON—OFF
SW700
JOG
ON—OFF
SW709
ON/STAND-BY
ON—OFF
SW710
CLOCK/TIMER/SLEEP
ON—OFF
SW711
TUNING UP
ON—OFF
SW712
PLAY/CD PAUSE
ON—OFF
SW713
VOLUME SELECT
ON—OFF
SW714
DISPLAY MODE
ON—OFF
SW715
ASPM
ON—OFF
SW716
EON
ON—OFF
SW717
PTY. TI
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
Figure 18 TYPES OF TRANSISTOR AND LED
SW721
MEMORY/SET
ON—OFF
SW722
BASS/TREBLE
ON—OFF
SW723
BAND
ON—OFF
SW724
REC. PAUSE
ON—OFF
SW725
STOP/CLEAR
ON—OFF
SW726
TUNING DOWN
ON—OFF
SW727
FUNCTION
ON—OFF
SW728
VOLUME JOG
ON—OFF
SW801
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
2SB562 C
2SC2001 K
2SC380 O
2SD468 C
KRA102 M
KRC102 M
KRC104 M
KRC107 M
KTA1266 GR
KTC3199 GR
2SC2001 K
2SC380 O
2SD468 C
KRA102 M
KRC102 M
KRC104 M
KRC107 M
KTA1266 GR
KTC3199 GR
2SD2012 Y
MPG3372X
HY2043
HY2043
SVC348S
1 2 3
– 19 –
XL-40H/50H
WAVEFORMS OF CD CIRCUIT
NO DISC FOCUS SEARCH
STOP PLAY
FOO
1
TMAX
1
IC802 48pin
FO+
2
SBOK
2
IC804 26pin
IC802 12pin
FO-
3
DMO
3
IC804 25pin
IC802 55pin
FOCUS SEARCH TOC IL
STOP PLAY
SEL
1
TEI
1
IC802 57pin
FEI
2
TRO
2
IC802 43pin
IC802 49pin
TEI
3
FMO
3
IC802 46pin
IC802 53pin
STOP PLAY
CUE
FEI
1
TEI
1
IC802 43pin
SBAD
2
TRO
2
IC802 44pin
IC802 49pin
RFO
3
FMO
3
IC801 22pin
IC802 53pin
STOP PLAY
REVIEW
FEI
1
TEI
1
IC802 43pin
RFGO
2
TRO
2
IC801 19pin
IC802 49pin
RFRP
3
FMO
3
IC801 17pin
IC802 53pin
STOP PLAY
TCD-782 TNO-02 PLAYBACK
TEI
1
LO
1
IC802 46pin
TRO
2
IC802 49pin
RO
2
SBAD
3
IC802 44pin
1
2
3
4
6
7
11
15
16
17
IC802 85pin
IC802 46pin
IC802 46pin
IC802 46pin
IC802 30pin
5
6
5
7
8
5
9
10
6
11
12
13
14
6
11
15
6
11
15
IC802 82pin
XL-40H/50H
– 20 –
Figure 20 BLOCK DIAGRAM (1/4)
REC MUTE
Q105
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
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
M_12V
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)
1 2 3 4 5 6 7 8 9
CNP703
M_GND
Q903
Q905
Q901
CF352
CF351
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
LA1832
22 21 20
19
18
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
FM IN
X OUT
VSS
AOUT
AIN
PD
VDD
AM IN
NC
IF IN
IF REQ
SW
VCC
AM ANT
AM OSC.
VD301-1
SVC348S
VD301-2
SVC348S
VR351
10K(B)
10K(B)
FM MUTE LEVEL
23
T351
+5V
AM IF
VT
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 CONTROLLER
ZD351
MTZJ5.1B
Q360
FM RIPPLE
FM+B
A_12V
FILTER
8 7 6
4
3
1
2
5
3
1
1 3
IF OUT
F OUT
GND
GND
ANT.
VT
VT
GND
VCC
FM+B
FM IF
FM IF
Q301
CF302
FM IF
CF301
FM
ANTENNA
TERMINAL
FE301
FM FRONT END
SO301
VT
1
L341
BALUN
2
1
2
AM LOOP
ANTENNA CNP301
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
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
L-CH
R-CH
ERASE
HEAD
RECORD/
PLAYBACK
HEAD
T302
T306
1
2
3
IC102
REC./P.B.
EQUALIZER
AMP.
REC./P.B.
EQUALIZER
AMP.
2
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