Related Manuals for Sony XR-4759RDS
Summary of Contents for Sony XR-4759RDS
- Page 1 XR-4758RDS/4759RDS SERVICE MANUAL UK Model Photo: XR-4759RDS Model Name Using Similar Mechanism XR-3740 Tape Transport Mechanism Type MG-52A-135 SPECIFICATIONS FM/MW/LW CASSETTE CAR STEREO MICROFILM...
- Page 2 TABLE OF CONTENTS SERVICING NOTES GENERAL Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270 ˚ C dur- Location of Controls ............3 ing repairing. • Do not touch the soldering iron on the same conductor of the DISASSEMBLY ............
- Page 3 SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...
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Page 4: Disassembly
SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. FRONT PANEL ASS’Y 1 Push the button (release). 2 Remove the front panel ass’y to the direction of the arrow A . COVER ASS’Y 3 cover ass’y –... - Page 5 SUB PANEL, MECHANISM DECK (MG-52A-135) 5 screw (PTT2.6 × 6) 3 connector (CN352) 6 mechanism deck (MG-52A-135) 4 flexible flat cable (CN351) 2 sub panel 1 three screws (PTT2.6 × 6) 1 three screws (PTT2.6 × 6) 4 six screws (PTT2.6 ×...
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Page 6: Assembly Of Mechanism Deck
SECTION 3 ASSEMBLY OF MECHANISM DECK Note: Follow the assembly procedure in the numerical order given. ALIGNMENT OF FRONT SWITCH 1 Align ¢ mark on the rotary switch hole the position shown in the figure. chassis (S) ass’y 2 Align hole in the gear (LDG-D) with the position shown in the figure. - Page 7 CHASSIS (S) ASS’Y 2 screw (PS2 × 4) 2 screw (PS2 × 4) 1 chassis (S) ass’y LEVER (MODE) 1. Align ¢ mark on the rotary switch with hole in the lever (mode). 2. Fit on positions A , B and C and install the lever (mode).
- Page 8 LEVER (PINCH SELECTION) 1 Align. 2 lever (pich selection) HEAD PLATE ASS’Y 5 step screw (HP) 5 step screw (HP) 3 Press the ATS lever. 2 Fit shaft in groove. 4 Position the head plate sub ass’y as shown in the figure. ATS lever 1 Fit in groove.
- Page 9 LEVER (PINCH) ASS’Y 2 two polyethylene washers 1 Fit shaft of the lever (Pinch) ass’y in hole on the chassis (M) ass’y and install the lever (pinch) ass’y. shaft shaft shaft A 3 Install the spring (pinch press) to shaft A . Set the ends of spring to B and C .
- Page 10 ARM (SUCTION) 2 Move the arm (suction) in the arrow direction and fit on projection. projection 1 Fit the arm (suction) on the shaft. LEVER (LDG-A) / (LDG-B) shaft A shaft A shaft B shaft C shaft B 1 Fit the lever (LDG-A) 3 two type-E stop ring 2.0 on shaft A –...
- Page 11 GEAR (LDG-FT) 1 gear (LDG-A) 6 polyethylene washer 5 gear (LDG-FT) 2 tension spring (lever LDG) gear (LDG-D) hole 3 Move the lever (LDG-B) in the arrow direction. gear (LDG-A) gear (LDG-FB) 4 Align hole in the gear (LDG-D) with ¢...
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Page 12: Mechanical Adjustments
SECTION 4 SECTION 5 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS 1. Clean the following parts with a denatured-alcohol-moistened TEST MODE swab: This set have the test mode function. In the test mode, FM Auto playback head pinch roller Scan/Stop Level and MW Auto Scan/Stop Level adjustments can rubber belt capstan be performed easier than it in ordinary procedure. -
Page 13: Tape Deck Section
4. Adjust with the volume RV2 on TU1 so that the “FM” indica- See the adjustment location from on page 15 for the tion turns to “FM0” indication on the display window. adjustment. But, in case of already indicated “FM0”, turn the RV2 so that put out light “0”... - Page 14 FM Signal Meter Adjustment MW Auto Scan/Stop Level Adjustment Setting: Setting: SOURCE button: FM SOURCE and MODE button: MW FM RF signal generator 30 Ω 15 pF antenna jack (J1) 0.01 µ F 65 pF Carrier frequency : 98.00 MHz AM RF signal : 35 dB (56.2 µ...
- Page 15 Adjustment Location: – SET UPPER VIEW – Tape Speed Adjustment RV1 MW Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment RV4 FM Stereo Separation Adjustment RV1 FM Signal Meter Adjustment – 15 –...
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Page 16: Ic Pin Function Description
SECTION 6 DIAGRAMS 6-1. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC501 MN1884820S4G (SYSTEM CONTROLLER) Pin No. Pin Name Function TUNMUT Tuner muting control pin At muting: “H” AMPON Power amp power supply control pin Illumination power supply control pin ILLON At PW SEL on: ACC on: “H”... - Page 17 AVREF– – A/D reference voltage input pin AVSS – – BUSON BUS ON control signai output pin (for SONY BUS) SYSRST System reset signal output pin SEKOUT SEEK control signal output pin TUNON Tuner power supply control pin FM ON FM power supply control pin System muting control pin At muting: “H”...
- Page 21 • IC Block Diagrams (MAIN BOARD) IC1 TB2114F (EL) 24 23 21 20 14 13 RIPPLE FILTER – – SEEK/RECP SEEK/RECP 4BIT SWALLOW MODULAS COUNTER PRESCALER 12BIT PHASE PROGRAMABLE COMPARATOR COUNTER REFERENCE 40BIT 18BIT 20BIT COUNTER 22BIT SHIFT IF COUNTER 18BIT RESISTER OSC IN...
- Page 22 IC151 LC75373ED – LFIN – – – LFOUT – LSELO LROUT – – – VREF SHIFT DECODER LATCH CONTROL REGISTER – – – RROUT RSELO – RFOUT – – – – RFIN 6 7 8 9 10 IC351 CXA2509AQ-T4 IC360 MM1322XFBE 24dB 120µ/70µ...
- Page 23 IC601 BA3918-V2 REGULATOR OVER VOLTAGE PROTECT – 2 3 4 – 33 –...
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Page 24: Exploded Views
X-3367-636-1 LOCK ASSY * 14 3-355-209-01 PLATE (B), GROUND 3-011-295-01 INSULATOR (MAIN) * 15 A-3309-944-A POWER BOARD, COMPLETE (XR-4758RDS) A-3309-942-A MAIN BOARD, COMPLETE (XR-4759RDS) * 15 A-3313-077-A POWER BOARD, COMPLETE (XR-4759RDS) A-3309-949-A MAIN BOARD, COMPLETE (XR-4758RDS) * 16 3-012-264-01 BRACKET (52) - Page 25 3-375-373-01 SPRING (RELEASE) * 67 3-009-303-01 HOLDER (LCD) * 56 3-015-038-01 CUSHION (BACK PANEL) 3-010-519-01 PANEL, FRONT BACK X-3373-700-1 PANEL SUB ASSY (XR-4759RDS) 3-014-893-01 CUSHION (L2) X-3373-701-1 PANEL SUB ASSY (XR-4758RDS) LCD901 1-801-677-11 DISPLAY PANEL, LIQUID CRYSTAL 3-009-300-01 BUTTON (SOURCE) PL903...
- Page 26 (3) MECHANISM DECK SECTION-1 (MG-52A-135) M901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-928-675-01 BELT (52) 3-933-346-01 CATCHER * 102 3-928-673-01 LEVER (LDG-A) 3-933-344-01 GUIDE (C) 3-928-674-01 LEVER (LDG-B) 3-341-753-11 WASHER, POLYETHYLENE 3-933-341-01 SPRING (LEVER LDG), TENSION 3-933-335-01 GEAR (LDG-FT) 3-928-671-01 HOUSING 3-928-667-01 GEAR (LDG-A)
- Page 27 (4) MECHANISM DECK SECTION-2 (MG-52A-135) HP901 S901 M902 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3371-710-1 CHASSIS (S) ASSY 3-364-151-01 WASHER 3-933-337-01 SPRING (B-T-R), CONE COIL * 168 X-3371-701-1 CHASSIS (M) SUB ASSY (A) 3-701-437-01 POLY-SLIDER (A) X-3371-707-1 CLUTCH (PLAY) ASSY 3-933-333-01 GEAR (LDG-E) 3-701-437-21 WASHER...
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Page 28: Electrical Parts List
SECTION 8 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they When indicating parts by reference parts list may be different from the parts speci- are seldom required for routine service. number, please include the board. - Page 29 SW951 1-762-937-11 SWITCH, ROTARY (D-BASS) C153 1-163-037-11 CERAMIC CHIP 0.022uF C155 1-124-234-00 ELECT 22uF ************************************************************ C157 1-124-584-00 ELECT 100uF A-3309-942-A MAIN BOARD, COMPLETE (XR-4759RDS) A-3309-949-A MAIN BOARD, COMPLETE (XR-4758RDS) C158 1-163-031-11 CERAMIC CHIP 0.01uF C201 1-163-037-11 CERAMIC CHIP 0.022uF ********************* C202 1-126-160-11 ELECT...
- Page 30 1-216-295-00 CONDUCTOR, CHIP (2012) (XR-4758RDS) 8-719-991-65 DIODE SB02W03C 1-216-295-00 CONDUCTOR, CHIP (2012) 8-719-977-28 DIODE DTZ10B JC10 1-216-295-00 CONDUCTOR, CHIP (2012) 8-719-991-33 DIODE 1SS133T-77 (XR-4759RDS) JC11 1-216-295-00 CONDUCTOR, CHIP (2012) D350 8-719-988-62 DIODE 1SS355 D361 8-719-977-28 DIODE DTZ10B JC14 1-216-295-00 CONDUCTOR, CHIP...
- Page 31 1-410-509-11 INDUCTOR 10uH R201 1-216-214-00 METAL CHIP 4.7K 1/8W 1-414-142-11 INDUCTOR 1uH (XR-4759RDS) R202 1-216-085-00 METAL CHIP 1/10W 1-416-108-11 COIL (HIGH-FREQUENCY) (XR-4759RDS) L501 1-410-509-11 INDUCTOR 10uH R203 1-216-061-00 METAL CHIP 3.3K 1/10W R204 1-216-041-00 METAL CHIP 1/10W < TRANSISTOR >...
- Page 32 1-216-097-00 METAL CHIP 100K 1/10W R548 1-216-222-00 METAL CHIP 1/8W A-3309-944-A POWER BOARD, COMPLETE (XR-4758RDS) R549 1-216-222-00 METAL CHIP 1/8W A-3313-077-A POWER BOARD, COMPLETE (XR-4759RDS) R550 1-216-073-00 METAL CHIP 1/10W *********************** (Included in MAIN BOARD, COMPLETE) R551 1-249-429-11 CARBON 1/4W R562...
- Page 33 Remark < CONNECTOR > ************** CN801 1-778-985-11 PIN, CONNECTOR (ISO) (XR-4758RDS) HARDWARE LIST CN801 1-778-985-21 PIN, CONNECTOR (ISO) (XR-4759RDS) ************** CN802 1-778-983-11 PIN, CONNECTOR (PC BOARD) 13P CN803 1-778-983-11 PIN, CONNECTOR (PC BOARD) 13P 7-621-772-10 SCREW +B 2X4 7-685-793-01 SCREW +PTT 2.6X8 (S) <...
- Page 34 XR-4758RDS/4759RDS Sony Corporation 97C05086-1 9-925-581-11 Personal & Mobile Communication Company Printed in Japan © 1997. 3 Published by Quality Assurance Dept. – 44 –...