Sony STR-NX5MD Service Manual
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Sony STR-NX5MD Service Manual

Sony STR-NX5MD Service Manual

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SERVICE MANUAL
STR-NX5MD is the
Tuner and Amplifier
Section in DHC-NX5MD.
Amplifier section
European model
DIN power output (rated) 80 + 80 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 + 100 watts
(6 ohms at 1 kHz, 10% THD)
Music power output (reference)
160 + 160 watts
(6 ohms at 1 kHz, 10% THD)
Other models
DIN power output (rated) 90 + 90 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
110 + 110 watts
(6 ohms at 1 kHz, 10% THD)
Inputs
VIDEO IN:
voltage 250 mV
(phono jacks)
impedance 47 kilohms
TAPE IN:
voltage 250 mV
(phono jacks)
impedance 47 kilohms
Outputs
TAPE OUT:
voltage 250 mV
(phono jacks)
impedance 1 kilohms
PHONES:
accepts headphones of 8 ohms or
(stereo mini jack)
more
FRONT SPEAKER:
accepts impedance of 6 to 16 ohms
REAR SPEAKER:
accepts impedance of 16 ohms
SUPER WOOFER:
voltage 1 V, impedance 1 kilohms
STR-NX5MD

SPECIFICATIONS

Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Tourist model:
76.0 – 108.0 MHz
Other models:
87.5 – 108.0 MHz
Aerial
FM lead aerial
Aerial terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
European models:
531 – 1,602 kHz
(with the interval set at 9 kHz)
Other models:
531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
Aerial
AM loop aerial
Aerial terminals
External aerial terminal
Intermediate frequency
450 kHz
AEP Model
UK Model
E Model
General
Power requirements
European models:
230 V AC, 50/60 Hz
Other models:
120 V, 220 V or 230 – 240 V AC,
50/60 Hz Adjustable with voltage
selector
Power consumption
European models:
190 watts
Other models:
220 watts
Approx. 225 × 202 × 356 mm
Dimensions (w/h/d)
Mass
European models:
Approx. 7.8 kg
Other models:
Approx. 7.6 kg
Supplied accessories:
AM loop aerial (1)
Remote Commander (1)
Batteries (2)
FM lead aerial (1)
Speaker cords (2)
Front speaker pads (8)
Design and specifications are subject to change
without notice.
TUNER/AMPLIFIER
1

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Summary of Contents for Sony STR-NX5MD

  • Page 1: Specifications

    STR-NX5MD SERVICE MANUAL AEP Model UK Model E Model STR-NX5MD is the Tuner and Amplifier Section in DHC-NX5MD. SPECIFICATIONS Amplifier section Tuner section General FM stereo, FM/AM superheterodyne tuner Power requirements European model European models: 230 V AC, 50/60 Hz...

  • Page 2: Table Of Contents

    LINE WITH MARK 0 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 PUB- LISHED BY SONY.

  • Page 3: General

    SECTION 1 GENERAL • LOCATION OF CONTROLS – Front Panel – 5 6 7 8 9 0 1 ?/1 (Power) button and indicator 2 CD/TUNER NAME button 3 DISPLAY button 4 TIMER indicator (AEP, UK, German, AED and CIS models) 5 VIDEO button 6 TAPE button 7 MD button...
  • Page 4 This section is extracted from instruction manual. Step 2: Setting the time Press ENTER. The minute indication flashes. You must set the time beforehand to use the timer functions. The clock is on a 24-hour system for the European model, and a 12-hour system for other models. Press V or v to set the minute.

  • Page 5: Disassembly

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. 2 two screws (BVTP3 × 10) 2-1. CASE 3 case 1 two screws (case 3 TP2) 1 two screws (case 3 TP2) 2-2. FRONT PANEL ASSY 1 flat cable (7 core) (CN132) 4 front panel assy 2 flat cable (25 core)

  • Page 6: Back Panel Assy

    2-3. BACK PANEL ASSY 2 connector (CN173) 1 flat cable (13 core) (CN1) 4 back panel assy 3 six screws (BVTP3 × 10) 3 four screws (BVTP3 × 10) 2-4. MAIN BOARD 2 connector (CN111) 1 connector (CN181) 3 two screws (BVTP3 ×...

  • Page 7: Test Mode

    SECTION 3 TEST MODE [CD Delivery Mode] [MC Hot Reset] • This mode moves the optical pick-up to the position durable to • This mode resets the set with the preset data kept stored in the vibration. Use this mode when returning the set to the customer memory.
  • Page 8 [Aging Mode] • Display at an error occurred This mode can be used for operation check of CD section and tape 1) Display of the error count [ENTER] [POWER SAVE/DEMO deck section. (1) Press three buttons of [GROOVE] ( STANDBY ) CD section and tape deck section work in parallel.

  • Page 9: Diagrams

    SECTION 4 DIAGRAMS 4-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Circuit Boards Location 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 •...

  • Page 10: Schematic Diagram - Main Board (1/3)

    STR-NX5MD 4-2. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • See page 13 for Printed Wiring Board.

  • Page 11: Schematic Diagram - Main Board (2/3)

    STR-NX5MD 4-3. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • See page 9 for Waveforms. • See page 13 for Printed Wiring Board. PIN FUNCTION...

  • Page 12: Schematic Diagram - Main Board (3/3)

    STR-NX5MD 4-4. SCHEMATIC DIAGRAM – MAIN Board (3/3) – • See page 9 for IC Block Diagram. • Semiconductor Location Ref. No. Location Ref. No. Location Q112 D141 D501 Q113 D502 Q114 Q162 D503 D504 Q163 D505 Q164 D506 Q191...

  • Page 13: Printed Wiring Board - Main Board

    STR-NX5MD 4-5. PRINTED WIRING BOARD – MAIN Board – • See page 9 for Circuit Boards Location. (Page 18) (Page 18) (Page 16) (Page 18) (Page 16) There are a few cases that the part isn’t mounted in (Page 14)

  • Page 14: Printed Wiring Board - Pa Board

    STR-NX5MD 4-6. PRINTED WIRING BOARD – PA Board – • See page 9 for Circuit Boards Location. MAIN (Page 13) BOARD (AEP, UK, AED, CIS) CN152 (AEP, UK, AED, CIS) (MY, SP) • Semiconductor Location TRANS Ref. No. Location Ref. No.

  • Page 15: Schematic Diagram - Pa Board

    STR-NX5MD 4-7. SCHEMATIC DIAGRAM – PA Board –...

  • Page 16: Printed Wiring Board - Panel Section

    STR-NX5MD 4-8. PRINTED WIRING BOARDS – PANEL Section – • See page 9 for Circuit Boards Location. (Page 13) • Semiconductor Location Ref. No. Location D631 D636 D637 D638 D643 D644 D645 D646 D647 D648 Q631 Q636 Q637 Q638 Q641...

  • Page 17: Schematic Diagram - Panel Section

    STR-NX5MD 4-9. SCHEMATIC DIAGRAM – PANEL Section –...

  • Page 18: Printed Wiring Board - Transformer Section

    STR-NX5MD 4-10. PRINTED WIRING BOARDS – TRANSFORMER Section – • See page 9 for Circuit Boards Location. (AEP, UK, G, (MY, SP) AED, CIS) CN952 (MY, SP) MAIN BOARD CN111 (Page 13) MAIN BOARD CN181 (Page 13) BOARD CN808 (Page 14)

  • Page 19: Schematic Diagram - Transformer Section

    STR-NX5MD 4-11. SCHEMATIC DIAGRAM – TRANSFORMER Section –...

  • Page 20: Ic Pin Function Description

    4-12. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC501 M30622MAA-A39FP (SYSTEM CONTROLLER ) Pin No. Pin Name Descriptions Pin No. Pin Name Descriptions Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC401) XHOLD Not used (fixed at “L”) (for VACS, non-stop signal) Liquid crystal display on/off selection signal output terminal “L”: on, “H”: off LCD SW...
  • Page 21 Pin No. Pin Name Descriptions LED drive signal output of the DVD 5.1CH indicator (D632) “H”: LED on LED 5.1CH Not used (open) LED GROOVE LED drive signal output of the GROOVE indicator (D631) “H”: LED on Spectrum analyzer drive (low frequency) signal input from the spectrum analyzer band-pass BPF 1 filter (IC401) (for 100 Hz) Spectrum analyzer drive (low and middle frequency) signal input from the spectrum...

  • Page 22: Exploded View

    SECTION 5 EXPLODED VIEWS NOTE: • Items marked “*” are not stocked since they • -XX and -X mean standardized parts, so they The components identified by mark 0 or dotted line with mark may have some difference from the original are seldom required for routine service.

  • Page 23: Front Panel Section

    5-2. FRONT PANEL SECTION LCD601 supplied supplied with S652 supplied supplied with S651 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-4951-814-2 KNOB(VOL) ASSY 4-221-369-01 HOLDER (LCD) X-4951-831-2 KNOB(JOG) ASSY 1-674-798-11 BACKLIGHT BOARD X-4952-907-1 PANEL ASSY, FRONT(AEP,UK,G,AED,CIS) 1-769-908-11 WIRE(FLAT TYPE) (9 CORE) X-4952-908-1 PANEL ASSY, FRONT(MY,SP) 1-675-197-11 R BOARD...

  • Page 24: Chassis Section

    5-3. CHASSIS SECTION AEP, UK, G, AED, CIS not supplied supplied T951 not supplied not supplied MY, SP The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. AEP, UK, MY, SP Ref.

  • Page 25: Electrical Parts List

    SECTION 6 BACK LIGHT MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 26 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C502 1-164-159-11 CERAMIC 0.1uF D508 8-719-911-19 DIODE 1SS133T-72 C503 1-136-165-00 FILM 0.1uF 5.00% 50V D510 8-719-911-19 DIODE 1SS133T-72 (AEP,UK,G,AED,CIS) C505 1-126-916-11 ELECT 1000uF 20.00% 6.3V D901 8-719-024-99 DIODE 11ES2-NTA2B C506 1-162-306-11 CERAMIC 0.01uF...
  • Page 27 8-729-040-20 TRANSISTOR RT1P137L-TP (AEP,UK,G,AED,CIS) (AEP,UK,G,AED,CIS) R411 1-260-319-51 CARBON 1/2W Q927 8-729-900-36 TRANSISTOR BA1F4M-TP(AEP,UK,G,AED,CIS) (MY,SP) R412 1-260-089-11 CARBON 1/2W Q951 8-729-018-59 TRANSISTOR 2SB1375(LB-SONY) (AEP,UK,G,AED,CIS) Q952 8-729-119-76 TRANSISTOR 2SA1175TP-HFE Q953 8-729-119-76 TRANSISTOR 2SA1175TP-HFE R412 1-260-319-51 CARBON 1/2W (MY,SP) < RESISTOR > R413 1-260-084-11 CARBON...
  • Page 28 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R518 1-249-425-11 CARBON 4.7K 1/4W F R588 1-247-807-31 CARBON 1/4W R519 1-249-425-11 CARBON 4.7K 1/4W F (AEP,UK,G,AED,CIS) R520 1-247-807-31 CARBON 1/4W R589 1-247-807-31 CARBON 1/4W R521 1-247-807-31 CARBON 1/4W (AEP,UK,G,AED,CIS) R527...
  • Page 29 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C854 1-126-967-11 ELECT 47uF 20.00% 50V Q829 8-729-140-84 TRANSISTOR 2SC1841TP-PAFAEA C856 1-128-560-11 ELECT 22uF 20.00% 100V Q830 8-729-140-84 TRANSISTOR 2SC1841TP-PAFAEA C857 1-128-582-11 ELECT 10uF 20.00% 100V Q831 8-729-140-84 TRANSISTOR 2SC1841TP-PAFAEA C858 1-136-495-11 FILM 0.068uF...
  • Page 30 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R862 1-260-076-11 CARBON 1/2W D647 8-719-076-15 DIODE SELS6B14C-TP6 (KEY ILLUMINATION) (AEP,UK,G,AED,CIS) D648 8-719-076-15 DIODE SELS6B14C-TP6 (KEY ILLUMINATION) R863 1-260-076-11 CARBON 1/2W (AEP,UK,G,AED,CIS) < EARTH TERMINAL > R864 1-249-437-11 CARBON 1/4W R881...
  • Page 31 PANEL SUB TRANS TRANS Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R654 1-249-429-11 CARBON 1/4W 0 C991 1-113-925-11 CERAMIC 0.01uF 20.00% 250V R655 1-249-429-11 CARBON 1/4W (AEP,UK,G,AED,CIS) R656 1-249-417-11 CARBON 1/4W F R657 1-249-417-11 CARBON 1/4W F <...
  • Page 32 STR-NX5MD TRANS Ref. No. Part No. Description Remark < RESISTOR > 0 R951 1-219-120-11 FUSIBLE 0.15 1/4W 0 R952 1-219-120-11 FUSIBLE 0.15 1/4W < SWITCH > 0 S951 1-771-291-11 SWITCH, POWER (VOLTAGE SELECTOR) (MY,SP) < TRANSFORMER > 0 T951 1-435-566-11 TRANSFORMER, POWER (AEP,UK,G,AED,CIS)

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