Sanyo MCDS-935-F Service manual
FILE NO.
Service Manual
CD Portable Radio
Cassette Recorder
CONTENTS
Laser beam safety precaution..........................................1
Wiring Connection...........................................................2
Tuner Adjustments ........................................................... 3
Exploded View (Cabinet & Chassis) ................................5
Parts List .......................................................................... 6
IC Block Diagram & Description.......................................8
Wiring Diagram (BATTERY, CD SW, CASS).................13
Schematic Diagram (Main) .............................................. 14
Schematic Diagram (CD MAIN) ....................................... 16
Wiring Diagram (CD MAIN)............................................18
Wiring Diagram (DISPLAY)............................................Rear
MCD-S935F (AU)
(XE)
PRODUCT CODE No.
164 126 01 XE
164 126 02 AU
REFERENCE No. SM5810655
LASER BEAM SAFETY PRECAUTION
• Pick-up that emits a laser beam is used in this CD player section.
CAUTION :
USE OF CONTROLS OR ADJUSTMENTS
OR PERFORMANCE OF PROCEDURES
OTHER THAN THOSE SPECIFIED HEREIN
MAY RESULT IN HAZARDOUS RADIATION
EXPOSURE
CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
LASER OUTPUT..........0.6 mW Max. (CW)
WAVELENGTH ............. 790 nm
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
ADVARSEL-USYNLIG LASER STRÅLING VED ÅBNING, NÅR
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION, UNDGÅ
UDS ÆTTELSE FOR STRÅLING.
VARNING-OSYNLIG LASER STRÅLNING NÄR DENNA DEL
ÄR ÖPPNAD OCH SPÄRR ÄR URKOPPLAD. STRÅLEN ÄR
FARLIG.
VORSICHT! -UNSICHTBARE LASERSTRAHLUNG TRITT
AUS, WENN DECKEL GEÖFFNET UND ENN
SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT IST. NICHT,
DEM STRAHL AUSSETZEN.
VARO !-Avattaessa ja suojalukitus ohitettaessa olet alttiina
näkymättömälle lasersäteilylle. Älä katso säteeseen.
- 1 -
WIRING CONNECTION
This is a basic wiring connection .
- 2 -
TUNER ADJUSTMENTS
Part Location
TC801 T801 T802 L803 TC802 L802
(1). AM TRACKING ADJUSTMENT
Signal Generator ...... Connects to the AM ANT. Coil througt the loop antenna.
Adjust for the indication of VTVM of the wave form scope to be maximum.
AM-SG
AC EVM
OUT
AM LOOP ANT
60cm
(FIG.4)
OSCILLOSCOPE
(USA)
BANDAMSTEP
1
2
3
SING.
FRE.
600KHz
1400KHz
REPEAT STEP 4 AND 5 SEVERAL TIMES
ADJUST FOR
MAXIMUM
SENSITIVITY
MAXIMUM
SENSITIVITY
(2). FM RF TRACKING ADJUSTMENT
Signal Generator ...... Connects to the FM ANT JACK (FM IN) through the dummy.
FM-SG
75 OHM
FM ANT
AC EVM
OUTPUT
OSCILLOSCOPE
BANDFMSTEP
1
2
3
SING.
FRE.
90MHz
106MHz
REPEAT STEP 1 AND 2 SEVERAL TIMES
ADJUST FOR
MAXIMUM
SENSITIVITY
MAXIMUM
SENSITIVITY
ADJUSTMENT
L805
(ANT COIL)
TC801
ADJUSTMENT
L802
TC802
(FIG.5)
- 3 -
TUNER ADJUSTMENTS
(3). AM IF ADJUSTMENT
AM LOOP ANT
IC301
18PIN
(4). FM IF ADJUSTMENT
0.1U
(FIG.1)
450 KHz
BAND
MW-IF
STEP1SING.
FRE.
450KHz
RADIO
SETTING
ADJUST-
MENT
T802
REMARKS
ADJUST FOR
BEST IF WAVE
FORM
300PF
0.1U
(FIG.2)
10.5MHz
10.7
10.9
WAVE FORM
(MHZ)
(5). TUNING FREQUENCY RANGE ADJUSTMENT
FM-SG
75 OHM
FM BAND
CD
VOLTAGE
METER
R803
OUTPUT
FM ANT
OSCILLOSCOPE
BAND
FM-IF
STEP1SING.
FRE.
10.7MHz
RADIO
SETTING
ADJUST-
MENT
- - - -
(USA)
FM Band: Set the internal modulation of Singnal
generator to 1 KHz Dev. 22.5KHz
NO.
BAND
SING.
ADJUST FOR
FRE.
FM
87.5MHz
1
CHECK
1.4V~1.5V
FM
107.9MHz
2
CHECK
5.0V~5.5V
3
REPEAT STEP 1 AND 2 SEVERAL TIMES
REMARKS
- - - -
ADJUSTMENT
L803
- - - -
AM-SG
AM LOOP ANT
60cm
AM BAND
CD
VOLTAGE
METER
R803
OUTPUT
(FIG.3)
OSCILLOSCOPE
AM Band: Set the internal modulation of Singnal
generator to 30% 1KHz
NO.
BAND
SING.
ADJUST FOR
FRE.
AM
520KHz
4
CHCK
1.5V~1.6V
AM
1710KHz
5
CHECK
8V~8.5V
6
REPEAT STEP 4 AND 5 SEVERAL TIMES
- 4 -
ADJUSTMENT
T801
- - - -
EXPLODED VIEW(CABINET & CHASSIS)
1
3
4
5
10
11
Y01
Y03
Y02
Y02
Y03
Y07
Y08
Y09
Y09
Y11
Y11
Y25
Y25
Y25
Y25
Y25
Y26
Y26
Y26
Y26
Y12
Y12
Y13
Y14
Y15
Y17
Y18
Y19
Y20
Y21
Y22
Y22
Y22
Y22
Y23
Y24
Y10
Y05
Y06
Y06
Y04
12
14
15
17
16
6
7
9
2
13
8
18
19
71
72
73
74
75
20
21
22
23
24
25
26
27
28
29
30
31
32
42
33
34
43
44
45
46
47
49
64
65
64
65
66
66
50
49
51
35
36
37
38
39
40
41
61
62
63
Y27
Y27
Y27
Y27
53
54
52
67
68
55
21A
- 5 -
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