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QQ
3 7 63 1515 0
SERVICE MANUAL
Ver 1.0
1998. 11
TE
L 13942296513
www
.
MICROFILM
http://www.xiaoyu163.com
CFS-B7SMK2
Frequency range
FM : Saudi Arabia
87.6 – 107 MHz
Other countries 87.6 – 108 MHz
MW : 530 – 1,605 kHz
SW1 : 2.3 – 7 MHz
SW2 : 7 – 22 MHz
Aerials
FM/SW : Telescopic aerial
MW
: Built-in ferrite bar
Recording system
2-track, 4-channel stereo
Frequency response
70 – 10,000 Hz
Speakers
Full range : 10 cm (4 inches) dia,
2.8 ohms cone type × 2
Output
Headphones jack (stereo minijack),
for 16 – 68 ohms impedance headphones
Maximum Power output
2.5 W + 2.5 W
x
ao
u163
y
i
http://www.xiaoyu163.com
2 9
8
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Battery life
Q Q
3
6 7
1 3
1 5
FM Recording : Sony R20P : Approx.
16 hours/Sony LR20 alkaline :
Approx. 36 hours
Playback
8 hours/Sony LR20 alkaline :
Approx. 21 hours
Power requirements
110 – 120 V/220 – 240 V AC
selectable, 50/60 Hz
Power consumption
AC 14 W
Dimensions
Approx. 500 × 155 × 164 mm (w/h/d)
× 6
(19
3
/
1
/
4
8
projecting parts and controls, not incl. handle
Mass
Approx. 2.7 kg (5 lb 15 oz) not incl. batteries
Supplied accessory
Mains lead (1)
Design and specifications are subject to change without
notice.
RADIO CASSETTE-CORDER
co
.
9 4
2 8
E Model
NEW
MF-B7S-148
0 5
8
2 9
9 4
2 8
: Sony R20P : Approx.
× 6
1
/
inches) incl.
2
m
9 9
9 9
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Related Manuals for Sony CFS-B7SMK2
Summary of Contents for Sony CFS-B7SMK2
- Page 1 Frequency range Battery life L 13942296513 FM : Saudi Arabia 87.6 – 107 MHz FM Recording : Sony R20P : Approx. Other countries 87.6 – 108 MHz 16 hours/Sony LR20 alkaline : MW : 530 – 1,605 kHz Approx. 36 hours SW1 : 2.3 –...
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Page 2: Table Of Contents
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. - Page 3 http://www.xiaoyu163.com SECTION 1 GENERAL This section is extracted 3 7 63 1515 0 from instruction manual. L 13942296513 u163 — 3 — http://www.xiaoyu163.com...
- Page 4 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 — 4 — http://www.xiaoyu163.com...
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Page 5: Disassembly
http://www.xiaoyu163.com SECTION 2 DISASSEMBLY 3 7 63 1515 0 • The equipment can be removed using the following procedure. Set / Front cabinet assy / Chassis (TUNE) / Tape mechanism block / Tuner, AC, Second board / Audio, Mic board Note : Follow the disassembly procedure in the numerical order given. - Page 6 http://www.xiaoyu163.com 3 7 63 1515 0 2-3. TAPE MECHANISM BLOCK 3 CN601 4 tape mechanism block 2 CN301 1 BVTP 3 × 10 L 13942296513 2-4. “ TUNER BOARD ”, “ AC BOARD ”, “ SECOND BOARD ” 0 SECOND board 1 knob (FINE TUNE) 8 T901 7 BVTP 3 ×...
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Page 7: Dial Pointer Setting
http://www.xiaoyu163.com 3 7 63 1515 0 2-5. “ AUDIO BOARD ”, “ MIC BOARD ” 1 knob (VOLUME) 2 knob (HYPER TREBLE/MEGA BASS) 3 chassis (MD) 6 MIC board 5 SUPPORT board 9 lever (FUNCTION) 4 BVTP 3x10 7 BVTP 3 × 10 8 AUDIO board L 13942296513 2-6. -
Page 8: Mechanical Adjustments
http://www.xiaoyu163.com SECTION 3 SECTION 4 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS 3 7 63 1515 0 PRECAUTION 4-1. TAPE SECTION 0dB = 0.775V 1. Clean the following parts with a denatured alchool-moistened Standard output level swab: Output terminal HP OUT record/playback head pinch roller 32 Ω... -
Page 9: Tuner Section
http://www.xiaoyu163.com 3 7 63 1515 0 4-2. TUNER SECTION 0dB = 1µV FM FREQUENCY COVERAGE ADJUSTMENT • FM Section Adjust for a maximum reading on Level meter. Setting : BAND switch : FM 86.5 MHz (87.35MHz) 109.5 MHz (107.8 MHz) FM RF signal generator FM TRACKING ADJUSTMENT... - Page 10 http://www.xiaoyu163.com 3 7 63 1515 0 • FM VCO Adjustment Setting: FM RF SSG telescopic antenna input 0.001 µ F Carrier frequency : 98MHz Modulation: no modulation Output level: 0.1 V (100 dB) Procedure: 1. Connect a frequency counter as shown below. 2.
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Page 11: Diagrams
http://www.xiaoyu163.com SECTION 5 DIAGRAMS 3 7 63 1515 0 5-1. CIRCUIT BOARDS LOCATION SECOND board AUDIO board MIC board SUPPORT board AC board TRANSLATION (HEAD) board BATT board TUNER board RELAY board L 13942296513 • IC Block Diagram IC1 CXA1238S 28 27 26 25 24 23 22 21 FM FRONT-END... - Page 12 CFS-B7SMK2 5-2. PRINTED WIRING BOARDS – TUNER SECTION – • Refer to page 11 for Circuit Boards Location. 3 7 63 1515 0 L 13942296513 THIS NOTE IS COMMON FOR PRINTED WIRING • Semiconductor BOARDS AND SCHEMATIC DIAGRAMS. Location...
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Page 13: Schematic Diagram -Tuner Section
CFS-B7SMK2 5-3. SCHEMATIC DIAGRAM – TUNER SECTION – • Refer to page 11 for IC BLOCK DIAGRAM. 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 —... -
Page 14: Schematic Diagram - Audio Section
CFS-B7SMK2 5-4. SCHEMATIC DIAGRAM – AUDIO SECTION – 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 — 15 — — 16 —... -
Page 15: Exploded Views
http://www.xiaoyu163.com SECTION 6 3 7 63 1515 0 EXPLODED VIEWS NOTE: • The mechanical parts with no reference number • -XX, -X mean standardized parts, so they may • Hardware (# mark) list and accessories and in the exploded views are not supplied. have some differences from the original one. -
Page 16: Rear Cabinet Section
http://www.xiaoyu163.com 3 7 63 1515 0 6-2. REAR CABINET SECTION T901 ANT1 not supplied F901 MF-B7S-148 not supplied L 13942296513 not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 3-025-530-01 POINTER 3-025-542-11 KNOB(BAND) (RED) 3-025-545-01 SHAFT (TUNE) 3-025-544-01 KNOB(FINE TUNE) (BLACK) 3-025-560-01 SPRING (TU) 3-025-544-11 KNOB(FINE TUNE) (RED) -
Page 17: Mechanism Deck Section (1)
http://www.xiaoyu163.com 3 7 63 1515 0 6-3. MECHANISM DECK SECTION (1) (MF-B7S-148) M901 L 13942296513 S901 S902 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 3-034-049-01 SPACER(MD) 3-024-977-01 SPRING (EJECT), TORSION * 102 3-024-566-01 SLIDER (SD) 3-024-587-01 GEAR (MANUAL D) 3-024-556-01 PLATE, LOCK 3-024-563-01 LEVER (A), SO... -
Page 18: Mechanism Deck Section (2)
http://www.xiaoyu163.com 3 7 63 1515 0 6-4. MECHANISM DECK SECTION (2) (MF-B7S-148) HRP901 HE901 L 13942296513 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 3-024-979-01 SPRING (PINCH R), TORSION 3-024-988-01 SPRING, TENSION 3-933-024-01 ROLLER, PINCH X-3375-582-1 TABLE ASSY, HEAD 3-024-575-01 ARM(R), PINCH X-3375-581-1 HOLDER ASSY, HD 3-024-978-01 SPRING (PINCH N), TORSION... -
Page 19: Mechanism Deck Section (3)
http://www.xiaoyu163.com 3 7 63 1515 0 6-5. MECHANISM DECK SECTION (3) (MF-B7S-148) L 13942296513 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 3-024-589-01 CLAW, PREVENTION 4-931-795-01 WASHER * 202 3-024-602-01 SLIDER (B), D 3-024-611-01 DETENT, CASSETTE 3-024-586-01 CAM, MANUAL (D) 3-024-600-01 ARM, PAS 3-344-737-11 SCREW (B1.4 ×... -
Page 20: Mechanism Deck Section (4)
http://www.xiaoyu163.com 3 7 63 1515 0 6-6. MECHANISM DECK SECTION (4) (MF-B7S-148) L 13942296513 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks X-3375-503-1 CHASSIS ASSY, MECHANICAL 3-024-588-01 LEVER (FW), ID * 252 3-024-558-01 SLIDER (EJECT) 3-027-181-01 SLIDER (FR) * 253 3-024-557-01 SLIDER (STOP) 3-027-069-01 SPRING (FRW), TORSION... -
Page 21: Electrical Parts List
http://www.xiaoyu163.com SECTION 7 AUDIO ELECTRICAL PARTS LIST 3 7 63 1515 0 NOTE: • Due to standardization, replacements in the • Abbrevation • SEMICONDUCTORS parts list may be different from the parts EA : Saudi Arabia In each case, u: µ, for example: specified in the diagrams or the components SP : Singapore uA...: µA... - Page 22 http://www.xiaoyu163.com AUDIO BATT SECOND SUPPORT RELAY 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < JACK > < VARIABLE RESISTOR > J301 1-566-891-11 JACK (PHONES) RV351 1-225-638-11 RES, VAR, CARBON 20K/20K (VOLUME) RV352 1-225-639-11 RES, VAR, CARBON 20K/20K (HYPER TREBLE) <...
- Page 23 http://www.xiaoyu163.com TUNER TRANSLATION(HEAD) 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-670-207-11 TRANSLATION (HEAD) BOARD < CONNECTOR > ************************ 1-506-987-11 PIN, CONNECTOR (PC BOARD) 5P ************************************************************ < TRIMMER > A-3321-465-A TUNERBOARD, COMPLETE (E,SP) A-3321-471-A TUNERBOARD, COMPLETE (EA) 1-141-485-11 CAP, ADJ 5PF 1-141-485-11 CAP, ADJ 5PF...
- Page 24 CFS-B7SMK2 TUNER 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < VARIABLE RESISTOR > ACCESSORIES & PACKING MATERIALS ***************************** 1-228-995-00 RES, ADJ, METAL22K 1-569-008-21 ADAPTOR, CONVERSION (2P)(EA) 1-225-637-11 RES, VAR, CARBON 100 (FINE TUNE)