Sony XR-3758 User manual

MICROFILM
XR-3758/3759
FM/MW/LW CASSETTE CAR STEREO
SERVICE MANUAL
UK Model
Model Name Using Similar Mechanism XR-3750/C350
Tape Transport Mechanism Type MG-52A-135
•XR-3758/3759 are almost same as XR-3750 UK model.
Printed wiring boards, schematic diagram, exploded views
andelectricalpartslistaredescribedinthisservicemanual.
Please refer to XR-3750/C350 service manual previously
issued for the other informations.
TABLE OF CONTENTS
1. EXPLODED VIEWS ................................................ 2
2. DIAGRAMS
2-1. Printed Wiring Boards –MAIN Section– ........................ 6
2-2. Schematic Diagram –MAIN Section–............................ 9
2-3. Printed Wiring Board –KEY Section– ........................... 14
2-4. Schematic Diagram –KEY Section– .............................. 16
3. ELECTRICAL PARTS LIST ................................ 19
Photo: XR-3759
SERVICING NOTES
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
MC-Service

– 2 –
NOTE:
•-XX and -X mean standardized parts, so they
may have some difference from the original
one.
•Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑↑
Parts Color Cabinet's Color
•Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
•The mechanical parts with no reference num-
ber in the exploded views are not supplied.
•Hardware (# mark) list and accessories and
packing materials are given in the last of the
electrical parts list.
SECTION 1
EXPLODED VIEWS
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 3-009-294-01 PANEL, SUB
2 3-935-003-01 SPRING, TORSION
3 3-932-205-21 DOOR, CASSETTE (XR-3758)
3 3-932-205-71 DOOR, CASSETTE (XR-3759)
4 X-3367-636-1 LOCK ASSY
*5 3-010-376-01 INSULATOR
*6 A-3309-950-A MAIN BOARD, COMPLETE (XR-3759)
*6 A-3309-953-A MAIN BOARD, COMPLETE (XR-3758)
7 3-915-923-01 SCREW, GROUND POINT
*8 X-3373-504-1 COVER ASSY
*10 3-012-264-01 BRACKET (52)
*11 3-010-471-01 HEAT SINK
12 9-911-840-XX CUSHION (U)
*13 3-009-813-11 CHASSIS (XR-3758)
*13 3-009-813-31 CHASSIS (XR-3759)
*15 A-3309-913-A CONNECTOR BOARD, COMPLETE (XR-3758)
*15 A-3313-078-A CONNECTOR BOARD, COMPLETE (XR-3759)
*18 3-012-860-01 CAP (52), RUBBER
*19 3-009-816-01 BRACKET (IC) (ISO)
F801 1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A)
(1) CHASSIS SECTION 8
F801
10
#3
MG-52A-135
7
6
5
4
3
Front panel ass’y
#2
#3
#3
1
2
18
#3
13
15
#3
12
#3
19
not
supplied
#1
#1
MC-Service

– 3 –
(2) FRONT PANEL SECTION
53
54
52
59
60
62
LCD901
not supplied
(KEY board)
#5
#5
PL901
65 66
61
51
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
51 3-009-301-01 BUTTON (BASS)
52 3-010-472-01 BUTTON (L2) (+. –)
53 3-009-304-01 BUTTON (RELEASE)
54 3-935-119-01 SPRING (RELEASE)
56 X-3373-702-1 PANEL SUB ASSY (XR-3759)
56 X-3373-703-1 PANEL SUB ASSY (XR-3758)
57 3-009-300-01 BUTTON (SOURCE)
58 3-009-297-11 BUTTON (L) (+ +). SEEK AMS.
=0–. r. OFF. SEL. MUTE)
59 3-010-473-01 BUTTON (1–3) (6. 1. 2. 3)
60 3-010-474-11 BUTTON (4–6) (4. 5. 6)
61 3-009-315-01 BUTTON (R) (3) (BTM. LCL. DSPL)
*62 3-010-282-01 PLATE (LCD), GROUND
*63 3-012-669-01 SHEET (REFLECTOR)
*64 3-009-302-01 PLATE (LCD), LIGHT GUIDE
*65 3-009-303-02 HOLDER (LCD)
66 3-010-519-01 PANEL, FRONT BACK
LCD901 1-801-678-11 DISPLAY PANEL, LIQUID CRYSTAL
PL901 1-517-633-21 LAMP, PILOT (LCD BACK LIGHT)
PL902 1-517-633-21 LAMP, PILOT (LCD BACK LIGHT)
58
57
56
64
63
PL902
MC-Service

– 4 –
(3) MECHANISM DECK SECTION-1
(MG-52A-135)
106
107
108
109
M901
110
111
112
102
103
#7
104
105
A
A
#6
101
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
101 3-928-675-01 BELT (52)
*102 3-928-673-01 LEVER (LDG-A)
103 3-928-674-01 LEVER (LDG-B)
104 3-933-341-01 SPRING (LEVER LDG), TENSION
105 3-928-671-01 HOUSING
*106 3-933-347-01 ARM (SUCTION)
107 3-933-340-01 HANGER
108 3-933-346-01 CATCHER
109 3-933-344-01 GUIDE (C)
110 3-341-753-11 WASHER, POLYETHYLENE
111 3-933-335-01 GEAR (LDG-FT)
112 3-928-667-01 GEAR (LDG-A)

– 5 –
(4) MECHANISM DECK SECTION-2
(MG-52A-135)
HP901
165
166
159
167
168
169
170
171
172
173
174
176
151
152
153
156
157
158
154 155
153
156
S901
#6
163
164
159
160
161
M902
B
B
#6
175
#8
162
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
M901 A-3291-665-A MOTOR ASSY, MAIN (CAPSTAN/REEL)
151 X-3371-710-1 CHASSIS (S) ASSY
152 3-933-337-01 SPRING (B-T-R), CONE COIL
153 3-701-437-01 POLY-SLIDER (A)
154 3-933-333-01 GEAR (LDG-E)
155 3-933-339-01 SPRING (B-T-F), CONE COIL
156 3-933-345-01 GEAR, REEL
157 3-954-807-01 WASHER
158 1-660-169-21 REEL BOARD
159 3-341-752-11 WASHER, POLYETHYLENE
160 3-933-336-01 SPRING (ARM HANGER), TENSION
161 3-928-669-01 LEVER (PINCH SELECTION)
162 3-928-668-01 LEVER (MODE)
163 3-933-338-01 SCREW (HP), STEP
164 3-927-100-01 SCREW (+PS 2X10), SPECIAL
165 3-928-670-01 SPRING (PINCH PRESS)
*166 X-3371-712-1 PLATE SUB ASSY, HEAD
167 3-364-151-01 WASHER
*168 X-3371-701-1 CHASSIS (M) SUB ASSY (A)
169 X-3371-707-1 CLUTCH (PLAY) ASSY
170 3-701-437-21 WASHER
171 3-930-932-01 FLYWHEEL (F) (SEF)
172 A-3291-667-A CLUTCH (FR) ASSY
173 3-321-813-01 WASHER, COTTER POLYETHYLENE
174 3-933-343-01 GEAR (REVERSE)
175 3-933-383-01 SEAL (32), REFLECTION
176 X-3371-703-1 LEVER (GEAR) ASSY
177 X-3371-713-2 LEVER (PINCH) ASSY
178 X-3371-706-2 ARM (HANGER) ASSY
HP901 1-500-157-21 HEAD, MAGNETIC (PLAYBACK)
M902 A-3291-664-A MOTOR ASSY, SUB
(LOADING/TAPE OPERATION)
S901 1-692-885-11 SWITCH, ROTARY SLIDE (TAPE OPERATION)
177
177
178
157
MC-Service

MC-Service

MC-Service
MC-Service

MC-Service
MC-Service

– 19 –
When indicating parts by reference
number, please include the board.
NOTE:
•Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used on
the set.
•-XX and -X mean standardized parts, so they
mayhavesomedifference from theoriginalone.
•RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
•Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
•SEMICONDUCTORS
In each case, u: µ, for example:
uA. . : µA. . uPA. . : µPA. .
uPB. . : µPB. . uPC. . : µPC. .
uPD. . : µPD. .
•CAPACITORS
uF: µF
•COILS
uH: µH
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
*A-3309-913-A CONNECTOR BOARD, COMPLETE (XR-3758)
***************************
(Included in MAIN BOARD, COMPLETE)
*A-3313-078-A CONNECTOR BOARD, COMPLETE (XR-3759)
***************************
(Included in MAIN BOARD, COMPLETE)
< CONNECTOR >
CN801 1-778-984-11 CONNECTOR
CN802 1-778-985-11 PIN, CONNECTOR (ISO) (XR-3758)
CN802 1-778-985-21 PIN, CONNECTOR (ISO) (XR-3759)
< DIODE >
D801 8-719-049-38 DIODE 1N5404TU
< COIL >
L801 1-416-046-11 COIL, CHOKE
< RESISTOR >
R801 1-249-417-11 CARBON 1K 5% 1/4W
R802 1-249-417-11 CARBON 1K 5% 1/4W
R803 1-247-855-11 CARBON 10K 5% 1/4W
< SWITCH >
S801 1-571-478-11 SWITCH, SLIDE (POWER SELECT)
************************************************************
KEY BOARD
**********
*3-009-302-01 PLATE (LCD), LIGHT GUIDE
*3-009-303-02 HOLDER (LCD)
*3-012-669-01 SHEET (REFLECTOR)
*3-010-282-01 PLATE (LCD), GROUND
< CAPACITOR >
C901 1-163-033-00 CERAMIC CHIP 0.022uF 50V
C902 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C903 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C904 1-163-137-00 CERAMIC CHIP 680PF 5% 50V
< CONNECTOR >
CNP901 1-764-423-11 PIN, CONNECTOR 12P
< DIODE >
D901 8-719-976-99 DIODE DTZ5.1B
D902 8-719-105-99 DIODE RD6.2M-B1
D903 8-719-105-99 DIODE RD6.2M-B1
D904 8-719-105-99 DIODE RD6.2M-B1
D905 8-719-105-99 DIODE RD6.2M-B1
< IC >
IC901 8-759-443-68 IC LC75834JED
< CHIP CONDUCTOR >
JC901 1-216-295-00 CONDUCTOR, CHIP (2012)
JC902 1-216-295-00 CONDUCTOR, CHIP (2012)
JC951 1-216-296-00 CONDUCTOR, CHIP (3216)
JC952 1-216-296-00 CONDUCTOR, CHIP (3216)
< LIQUID CRYSTAL DISPLAY >
LCD901 1-801-678-11 DISPLAY PANEL, LIQUID CRYSTAL
< SWITCH >
LSW901 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (OFF)
LSW902 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (SOURCE)
LSW903 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (MODE)
LSW904 1-762-619-11 SWITCH, KEY BOARD (WITH LED)
(+ +): SEEK/AMS)
LSW905 1-762-619-11 SWITCH, KEY BOARD (WITH LED)
(– =0: SEEK/AMS)
LSW906 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (–)
LSW907 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (SEL)
LSW908 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (+)
LSW909 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (MUTE)
LSW911 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (BTM)
LSW912 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (LCL)
LSW921 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (6)
LSW922 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (1/INTRO)
LSW923 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (2/REPEAT)
LSW924 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (3)
LSW925 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (6/BL.SKIP)
LSW926 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (5/ATA)
LSW927 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (4/MTL)
LSW930 1-762-619-11 SWITCH, KEY BOARD (WITH LED) (DSPL)
< PILOT LAMP >
PL901 1-517-567-11 LAMP, PILOT
PL902 1-517-567-11 LAMP, PILOT
CONNECTOR KEY
SECTION 3
ELECTRICAL PARTS LIST
MC-Service

– 20 –
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
C11 1-126-160-11 ELECT 1uF 20% 50V
C13 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
C14 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C15 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C16 1-124-589-11 ELECT 47uF 20% 16V
C17 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
C18 1-107-823-11 CERAMIC CHIP 0.47uF 10% 16V
C19 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 50V
C20 1-164-232-11 CERAMIC CHIP 0.01uF 10% 50V
(XR-3759)
C21 1-126-157-11 ELECT 10uF 20% 16V
(XR-3759)
C22 1-164-232-11 CERAMIC CHIP 0.01uF 10% 50V
(XR-3759)
C23 1-216-295-00 CONDUCTOR, CHIP (2012)
C24 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C25 1-124-589-11 ELECT 47uF 20% 16V
C27 1-164-232-11 CERAMIC CHIP 0.01uF 50V
C101 1-163-263-11 CERAMIC CHIP 330PF 5% 50V
C102 1-163-263-11 CERAMIC CHIP 330PF 5% 50V
C104 1-164-232-11 CERAMIC CHIP 0.01uF 50V
C105 1-164-489-11 CERAMIC CHIP 0.22uF 10% 16V
C106 1-163-227-11 CERAMIC CHIP 10PF 0.5PF 50V
C107 1-126-163-11 ELECT 4.7uF 20% 50V
C121 1-164-232-11 CERAMIC CHIP 0.01uF 10% 50V
C122 1-163-809-11 CERAMIC CHIP 0.047uF 10% 25V
C123 1-216-295-00 CONDUCTOR, CHIP (2012)
C151 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V
C153 1-124-257-00 ELECT 2.2uF 20% 50V
C161 1-126-160-11 ELECT 1uF 20% 50V
C162 1-126-160-11 ELECT 1uF 20% 50V
C163 1-164-182-11 CERAMIC CHIP 0.0033uF 10% 50V
C164 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V
C165 1-126-157-11 ELECT 10uF 20% 16V
C166 1-164-492-11 CERAMIC CHIP 0.15uF 10% 16V
C167 1-164-492-11 CERAMIC CHIP 0.15uF 10% 16V
C168 1-126-157-11 ELECT 10uF 20% 16V
C171 1-126-163-11 ELECT 4.7uF 20% 50V
C181 1-126-163-11 ELECT 4.7uF 20% 50V
C191 1-163-227-11 CERAMIC CHIP 10PF 0.5PF 50V
C192 1-163-227-11 CERAMIC CHIP 10PF 0.5PF 50V
C193 1-163-227-11 CERAMIC CHIP 10PF 0.5PF 50V
C201 1-163-263-11 CERAMIC CHIP 330PF 5% 50V
C202 1-163-263-11 CERAMIC CHIP 330PF 5% 50V
C204 1-164-232-11 CERAMIC CHIP 0.01uF 50V
C205 1-164-489-11 CERAMIC CHIP 0.22uF 10% 16V
C206 1-163-227-11 CERAMIC CHIP 10PF 0.5PF 50V
C207 1-126-163-11 ELECT 4.7uF 20% 50V
C251 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V
C253 1-124-257-00 ELECT 2.2uF 20% 50V
C261 1-126-160-11 ELECT 1uF 20% 50V
C262 1-126-160-11 ELECT 1uF 20% 50V
C263 1-164-182-11 CERAMIC CHIP 0.0033uF 10% 50V
C264 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V
C265 1-126-157-11 ELECT 10uF 20% 16V
C266 1-164-492-11 CERAMIC CHIP 0.15uF 10% 16V
C267 1-164-492-11 CERAMIC CHIP 0.15uF 10% 16V
C268 1-126-157-11 ELECT 10uF 20% 16V
C271 1-126-163-11 ELECT 4.7uF 20% 50V
< RESISTOR >
R901 1-216-647-11 METAL CHIP 680 0.5% 1/10W
R902 1-216-647-11 METAL CHIP 680 0.5% 1/10W
R903 1-216-647-11 METAL CHIP 680 0.5% 1/10W
R904 1-208-437-41 METAL CHIP 1K 2% 1/10W
R905 1-216-655-11 METAL CHIP 1.5K 0.5% 1/10W
R906 1-216-655-11 METAL CHIP 1.5K 0.5% 1/10W
R907 1-208-445-41 METAL CHIP 2.2K 2% 1/10W
R908 1-208-449-41 METAL CHIP 3.3K 2% 1/10W
R911 1-208-462-41 METAL CHIP 10K 2% 1/10W
R921 1-216-647-11 METAL CHIP 680 0.5% 1/10W
R922 1-216-647-11 METAL CHIP 680 0.5% 1/10W
R923 1-216-647-11 METAL CHIP 680 0.5% 1/10W
R924 1-208-437-41 METAL CHIP 1K 2% 1/10W
R925 1-216-655-11 METAL CHIP 1.5K 0.5% 1/10W
R926 1-216-655-11 METAL CHIP 1.5K 0.5% 1/10W
R941 1-208-453-41 METAL CHIP 4.7K 2% 1/10W
R942 1-208-458-41 METAL CHIP 6.8K 2% 1/10W
R951 1-216-190-00 METAL CHIP 470 5% 1/8W
R952 1-216-089-00 METAL CHIP 47K 5% 1/10W
R953 1-216-049-11 METAL CHIP 1K 5% 1/10W
R954 1-216-049-11 METAL CHIP 1K 5% 1/10W
R955 1-216-049-11 METAL CHIP 1K 5% 1/10W
R956 1-216-049-11 METAL CHIP 1K 5% 1/10W
R962 1-216-025-00 METAL CHIP 100 5% 1/10W
R963 1-216-033-00 METAL CHIP 220 5% 1/10W
R964 1-216-035-00 METAL CHIP 270 5% 1/10W
R965 1-216-035-00 METAL CHIP 270 5% 1/10W
R967 1-216-035-00 METAL CHIP 270 5% 1/10W
R968 1-216-033-00 METAL CHIP 220 5% 1/10W
R981 1-216-655-11 METAL CHIP 1.5K 0.5% 1/10W
R982 1-208-449-41 METAL CHIP 3.3K 2% 1/10W
R983 1-216-671-11 METAL CHIP 6.8K 0.5% 1/10W
R984 1-216-081-00 METAL CHIP 22K 5% 1/10W
< SWITCH >
SW951 1-762-937-11 SWITCH, ROTARY (D-BASS)
************************************************************
*A-3309-950-A MAIN BOARD, COMPLETE (XR-3759)
*********************
*A-3309-953-A MAIN BOARD, COMPLETE (XR-3758)
*********************
*3-009-816-01 BRACKET (IC) (ISO)
*3-010-471-01 HEAT SINK
7-685-793-09 SCREW +PTT 2.6X8 (S)
< CAPACITOR >
C1 1-163-235-11 CERAMIC CHIP 22PF 5% 50V
C2 1-163-227-11 CERAMIC CHIP 10PF 0.5PF 50V
C3 1-124-234-00 ELECT 22uF 20% 16V
C4 1-124-234-00 ELECT 22uF 20% 16V
C5 1-124-234-00 ELECT 22uF 20% 16V
C6 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C7 1-164-232-11 CERAMIC CHIP 0.01uF 50V
C8 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C9 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V
KEY MAIN