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Sony XR-C4120 Service Manual

Fm/mw/lw cassette car stereo
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3 7 63 1515 0
SERVICE MANUAL
RTV servis Horvat
Tel:
++385-31-856-637
Tel/fax: ++385-31-856-139
Mob:
098-788-319
www.rtv-horvat-dj.hr
TE
L 13942296513
www
.
MICROFILM
http://www.xiaoyu163.com
x
ao
u163
y
i
http://www.xiaoyu163.com
XR-C4120
2 9
8
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Q Q
3
6 7
1 3
1 5
FM/MW/LW CASSETTE CAR STEREO
co
.
9 4
2 8
AEP Model
UK Model
XR-C4100
MG-25Y-136
0 5
8
2 9
9 4
2 8
m
9 9
9 9

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Summary of Contents for Sony XR-C4120

  • Page 1 XR-C4120 3 7 63 1515 0 SERVICE MANUAL AEP Model UK Model RTV servis Horvat Tel: ++385-31-856-637 Tel/fax: ++385-31-856-139 Mob: 098-788-319 www.rtv-horvat-dj.hr Model Name Using Similar Mechanism XR-C4100 Tape Transport Mechanism Type MG-25Y-136 SPECIFICATIONS L 13942296513 FM/MW/LW CASSETTE CAR STEREO...

  • Page 2: Table Of Contents

    http://www.xiaoyu163.com 3 7 63 1515 0 TABLE OF CONTENTS Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270 ˚C dur- ing repairing. GENERAL • Do not touch the soldering iron on the same conductor of the Location of Controls ............
  • Page 3 http://www.xiaoyu163.com SECTION 1 This section is extracted from GENERAL instruction manual. 3 7 63 1515 0 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...
  • Page 5 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 – 5 – http://www.xiaoyu163.com...
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  • Page 9: Disassembly

    http://www.xiaoyu163.com SECTION 2 DISASSEMBLY 3 7 63 1515 0 Note: Follow the disassembly procedure in the numerical order given. 5 screw SUB PANEL, MECHANISM DECK (MG-25Y-136) (PTT2.6 × 6) 3 connector (CN351) 6 mechanism deck (MG-25Y-136) 4 flexible flat cable (CN301) 2 sub panel 1 three screws...

  • Page 10: Assembly Of Mechanism Deck

    http://www.xiaoyu163.com SECTION 3 ASSEMBLY OF MECHANISM DECK 3 7 63 1515 0 Note: Follow the assembly procedure in the numerical order given. HOUSING 7 Holder the hanger by bending the claw. 5 Fit projection on C part. 1 Install the catch to the hanger. 2 Install the hanger onto two claws of the housing.
  • Page 11 http://www.xiaoyu163.com 3 7 63 1515 0 LEVER (LDG-A)/(LDG-B) shaft A shaft A shaft B shaft B shaft C 1 Fit the lever (LDG-A) on shafts A – C and install it. 3 type-E stop ring 2.0 2 Fit the lever (LDG-B) on shafts A and B and install it.
  • Page 12 http://www.xiaoyu163.com 3 7 63 1515 0 GUIDE (C) 2 guide (C) 1 three claws L 13942296513 MOUNTING POSITION OF CAPSTAN/REEL MOTOR (M901) two precision screws (P2 × 2) capstan / reel motor (M901) u163 30˚ – 12 – http://www.xiaoyu163.com...

  • Page 13: Mechanical Adjustments

    http://www.xiaoyu163.com SECTION 4 SECTION 5 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS 3 7 63 1515 0 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 AM (MW) Auto Scan/Stop Level adjustments rubber belt...

  • Page 14: Tuner Section

    http://www.xiaoyu163.com 3 7 63 1515 0 FM Stereo Separation Adjustment TUNER SECTION 0 dB=1 µV Setting: button: FM [SOURCE] Cautions during repair When the tuner unit is defective, replace it by a new one be- FM RF signal cause its internal block is difficult to repair. level meter antenna jack (J1) generator...
  • Page 15 http://www.xiaoyu163.com 3 7 63 1515 0 AM (MW) Auto Scan/Stop Level Adjustment Make this adjustment after “FM Auto Scan/Stop Level Adjust- ment”. Setting: button: MW [SOURCE] 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna (50 Ω ) antenna jack (J1) Carrier frequency : 999 kHz 30% amplitude...
  • Page 16 http://www.xiaoyu163.com 3 7 63 1515 0 Adjustment Location: – SET UPPER VIEW – Tape Speed Adjustment RV1 AM (MW) Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment RV4 FM Stereo Separation Adjustment L 13942296513 u163 – 16 – http://www.xiaoyu163.com...

  • Page 17: Diagrams

    http://www.xiaoyu163.com SECTION 6 DIAGRAMS 3 7 63 1515 0 6-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS Note on Printed Wiring Board: Note on Schematic Diagram: X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF Y : parts extracted from the conductor side.
  • Page 18 http://www.xiaoyu163.com 3 7 63 1515 0 • Waveforms – MAIN Board – – KEY Board – 1 IC21 1 (XT OUT) 1 IC901 ^º OSC 0.2 Vp-p 2.7 Vp-p 97.6 ns 27 µ s 2 IC501 !∞ (XT IN) 1.7 Vp-p 30.5 µ...

  • Page 19: Schematic Diagram - Main Board (1/2)

    3 7 6 3 1 5 1 5 0 XR-C4120 6-3. SCHEMATIC DIAGRAM – MAIN Board (1/2) – • See page 18 for Waveforms. • See page 29 for IC Block Diagrams. L 1 3 9 4 2 2 9 6 5 1 3...

  • Page 20: Schematic Diagram – Main Board (2/2)

    3 7 6 3 1 5 1 5 0 XR-C4120 6-4. SCHEMATIC DIAGRAM – MAIN Board (2/2) – • See page 30 for IC Block Diagrams. L 1 3 9 4 2 2 9 6 5 1 3 u 1 6 3 –...

  • Page 21: Schematic Diagram - Key Board

    3 7 6 3 1 5 1 5 0 XR-C4120 6-6. SCHEMATIC DIAGRAM – KEY Board – • See page 18 for Waveform. L 1 3 9 4 2 2 9 6 5 1 3 RTV servis Horvat Tel:...
  • Page 22 http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 • IC Block Diagrams IC331 TDA7462D – MAIN Board – IC21 TB2118F-EL-S L 1 3 9 4 2 2 9 6 5 1 3 IC611 BA3918-V2 IC351 LB1930M-TLM IC301 CXA2509AQ-T4 µ...

  • Page 23: Tel 13942296513

    Rotary remote commander shift key input terminal “L”: shift SYSRST Reset signal output to the SONY bus interface (IC581) “L”: reset BUS-ON Bus on/off control signal output to the SONY bus interface (IC581) “L”: bus on UNISO Serial data output to the SONY bus interface (IC581) UNISI...
  • Page 24 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Function Standby on/off control signal output to the power amplifier (IC751) AMP ON “L”: standby mode, “H”: amp on PLL-CKO PLL serial data transfer clock signal output to the FM/AM PLL (IC21) PLL-CE PLL chip enable signal output to the FM/AM PLL (IC21) “H”...
  • Page 25 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Function POS3 Tape position (EJECT/FF/REW/ POS3: “L”: REV and EJECT mode, “H”: others mode POS2 REV/FWD mode) detect input from POS2: “L”: REW mode, “H”: others mode the tape operation switch on the POS0: “L”: EJECT mode, “H”: others mode POS0 deck mechanism...

  • Page 26: Exploded Views

    http://www.xiaoyu163.com SECTION 7 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • Items marked “*” are not stocked since they • -XX and -X mean standardized parts, so they are seldom required for routine service. Some may have some difference from the original delay should be anticipated when ordering one.
  • Page 27 http://www.xiaoyu163.com 3 7 63 1515 0 (2) FRONT PANEL SECTION LCD901 not supplied (KEY board) L 13942296513 u163 – 35 – http://www.xiaoyu163.com...
  • Page 28 http://www.xiaoyu163.com 3 7 63 1515 0 (3) MECHANISM DECK SECTION (MG-25Y-136) HP901 M901 L 13942296513 u163 – 36 – http://www.xiaoyu163.com...
  • Page 29 http://www.xiaoyu163.com SECTION 8 ELECTRICAL PARTS LIST 3 7 63 1515 0 NOTE: When indicating parts by reference • Due to standardization, replacements in the • Items marked “*” are not stocked since they number, please include the board. parts list may be different from the parts speci- are seldom required for routine service.
  • Page 30 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 L 13942296513 ************************************************************ ********************* u163 – 38 – http://www.xiaoyu163.com...
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  • Page 34 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 ************************************************************ ************** L 13942296513 ************************************************************ ************** ************** ************************************************************ ******************************** u163 – 42 – http://www.xiaoyu163.com...
  • Page 35 http://www.xiaoyu163.com 3 7 63 1515 0 ************************************************************ ************************************** +KTP3 × 12 PLATE (BRACKET) CLAMP (LOW TYPE) × 1 × 1 × 1 L 13942296513 FITTING SCREW BUSHING × 1 × 1 × 1 FRAME ASSY ANTENNA ADAPTER POWER CORD × 1 ×...

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