Technics SU-G700E Service Manual
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Technics SU-G700E Service Manual

Stereo integrated amplifier
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TABLE OF CONTENTS

1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment ------------------------- 4
1.3. Protection Circuitry ---------------------------------------- 5
1.4. Safety Parts Information --------------------------------- 5
2 Warning -------------------------------------------------------------- 6
(PbF)---------------------------------------------------------- 6
prevention --------------------------------------------------- 7
3 Service Navigation ----------------------------------------------- 8
3.1. Service Information --------------------------------------- 8
4 Specifications ----------------------------------------------------- 9
5.2. Main Unit Key Button Operation ---------------------- 11
6 Service Mode -----------------------------------------------------12
6.1. Doctor Mode -----------------------------------------------12
PAGE
Stereo Integrated Amplifier
SU-G700E
Model No.
SU-G700PP
Product Color: (S)...Silver Type
6.2. Error Code Table ----------------------------------------- 15
7 Troubleshooting Guide --------------------------------------- 16
7.2. No power --------------------------------------------------- 17
7.4. No Display ------------------------------------------------- 21
7.5. Power Indicator - Not Light ---------------------------- 22
7.6. Meter Illumination - No Light -------------------------- 23
7.7. No Remote Control Operation ------------------------ 24
7.8. Can not control Volume +/- ---------------------------- 25
7.9. Can not control Input Selection----------------------- 26
terminal) ---------------------------------------------------- 27
or OPT IN -------------------------------------------------- 28
7.12. No Sound from Speaker Unit ------------------------- 29
7.13. No Sound from Headphone --------------------------- 30
7.15. No Meter Operation ------------------------------------- 32
© Panasonic Corporation 2017. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
PSG1704003CE
A6
PAGE

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  • Page 1: Table Of Contents

    PSG1704003CE Stereo Integrated Amplifier SU-G700E Model No. SU-G700PP Product Color: (S)...Silver Type TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions----------------------------------------------- 3 6.2. Error Code Table ----------------------------------------- 15 1.1. General Guidelines---------------------------------------- 3 7 Troubleshooting Guide --------------------------------------- 16 1.2. Before Repair and Adjustment ------------------------- 4 7.1.
  • Page 2 7.17. No Audio Output from PRE OUT terminal --------- 34 7.18. No LAPC Function --------------------------------------- 34 7.19. Pin function of each connectors ---------------------- 35 7.20. Function and Possible failure PCB or Module ---- 36 8 Disassembly and Assembly Instructions --------------- 37 8.1.

  • Page 3: Safety Precautions

    1 Safety Precautions 1.1. General Guidelines 1. IMPORTANT SAFETY NOTICE There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent X-RADIATION, shock, fire, or other hazards.

  • Page 4: Before Repair And Adjustment

    1.2. Before Repair and Adjustment Disconnect Power Supply AC to discharge AC capacitor in SMPS P.C.B. and AC Inlet P.C.B. through a 10 Ω, 10 W resistor to ground. 1.2.1. SMPS P.C.B. Figure 1-2 Caution: DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac to avoid overcurrent.

  • Page 5: Protection Circuitry

    1.3. Protection Circuitry The protection circuitry may have operated if either of the following conditions are noticed: • No sound is heard when the power is turned on. • Sound stops during a performance. The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are “shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.

  • Page 6: Warning

    2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).

  • Page 7: Grounding For Electrostatic Breakdown Prevention

    • Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees C (662±86°F). Recommended Lead Free Solder (Service Parts Route.) • The following 3 types of lead free solder are available through the service parts route. RFKZ03D01K-----------(0.3mm 100g Reel) RFKZ06D01K-----------(0.6mm 100g Reel) RFKZ10D01K-----------(1.0mm 100g Reel)

  • Page 8: Service Navigation

    3 Service Navigation 3.1. Service Information This service manual contains technical information which will allow service personnel’s to understand and service this model. Please place orders using the parts list and not the drawing reference numbers. If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service manual.

  • Page 9: Specifications

    4 Specifications General Power supply AC 220 V to 240 V, 50/60 Hz (E) AC 120 V, 60 Hz (PP) Power consumption 85 W Power Consumption in standby Approx. 0.3 W mode Dimensions (W x H x D) ”) × 430 mm (16 ”) ×...

  • Page 10: Location Of Controls And Components

    5 Location of Controls and Components 5.1. Remote Control Key Button Operation...

  • Page 11: Main Unit Key Button Operation

    5.2. Main Unit Key Button Operation...

  • Page 12: Service Mode

    6 Service Mode 6.1. Doctor Mode • Normal Operation Step 1 Disconnect AC. Step 2 Power switch (Main Unit) in OFF condition. Step 3 Connect AC. Step 4 Press and hold the [AMP] button on remote control. Step 5 Power on the Main Unit while holding the [AMP] button on remote control. Step 6 Adjust the volume knob from around center to minimum while holding the [AMP] on remote control.
  • Page 13 6.1.2. Doctor Mode Table 2 Item OLED Display Key Operation Mode Name Description Main Set To check After finish the confirmation of firmware version of FONT, next [AMP] key Step 1 Enter into Key Check main set key starts the all main set key check Doctor Mode.
  • Page 14 6.1.3. Doctor Mode Table 3 Item OLED Display Key Operation Mode Name Description Volume To setup the [INPUT+] key, it setup the Volume Maximum. Step 1 Enter into Maximum, volume [INPUT-] key, it setup the Volume Medium. Doctor Mode. Volume During this test, it does not work the volume knob on main unit.

  • Page 15: Error Code Table

    6.2. Error Code Table • When any abnormal state occurs, there are some error indication with LED displayed. • This feature implemented in the model in order to help in indentifying and troubleshooting abnormal conditions. Item Key Operation OLED Display Mode Name Description Error Code F76 Current...

  • Page 16: Troubleshooting Guide

    7 Troubleshooting Guide 7.1. Check the problem is reproduced START Disconnect the AC mains lead from the wall outlet, wait for 3 minutes and reconnect the AC mains lead. Then, check if the problem is reproduced. (Approx. 3 minutes are required to discharge electricity from the electrolytic capacitors at the power source. Always wait for 3 minutes after power-off when checking other items as well.

  • Page 17: No Power

    7.2. No power No power <1> Is the AC power presented Replace the AC mains lead. at AC inlet (P1001)? <2> Is fuse F1001, F1101 Replace SMPS PCB. or F1601 okay? <3> Is the correct voltage presented Replace SMPS PCB. at the connector P1501? Go to next page.
  • Page 18 No power (from the previous section) <4> Disconnect FFC between Is the output voltage presented Main PCB and OLED PCB. from IC5001 Power IC? Is the symptom still No Power? Is FFC damaged? Replace FFC. Replace OLED PCB. Replace Main PCB. <4>...
  • Page 19 Main PCB No power (from the previous section) <5-1> <5> X7001 : 4MHz Main clock Is the clock for main microcomputer (IC3001) oscillated? <5-2> X7002 : 32.768 kHz Sub clock Replace Main PCB. Main microcomputer controls all function of this unit and it operates both power switch ON and OFF condition.

  • Page 20: Automatically Shutdown During Operation

    7.3. Automatically shutdown during operation Automatically shutdown during operation Confirm Confirm FFC between Connector between AMP PCB and Main PCB. SMPS PCB and AMP PCB. Recovered by disconnection and connection? Recovered by disconnection and connection? Damaged (no connection)? Damaged (no connection)? Replace FFC.

  • Page 21: No Display

    7.4. No Display <6> +4.8 to 5.2V : No Display. between both side of C5038 Main PCB <6> Is the correct voltage +5V present from IC5002? Confirm between both side of C5038. Replace Main PCB. Is the correct voltage present Is FFC between between Pin 9 and 7 of P8001 Main PCB and OLED PCB...

  • Page 22: Power Indicator - Not Light

    7.5. Power Indicator - Not Light No LED <6> Is the correct voltage +5V present from IC5002? Replace Main PCB. Confirm between both side of C5038. (Refer to Chapter 7.4) Is the correct voltage presented Is the correct voltage presented at connector P8401 on Main SW PCB? at connector P8001 on OLED PCB? Between Pin 1 and 7: +4.8 to 5.2V...

  • Page 23: Meter Illumination - No Light

    7.6. Meter Illumination - No Light Main PCB No Meter Illumination. Is the correct voltage presented at connector P8901 on Meter Illumi LED R PCB? Between Pin 2 and 6: +11.8 to 12.2V <7> <7> Is the correct voltage +12V +11.8 to 12.2V : present from IC5004? between both side of C5021...

  • Page 24: No Remote Control Operation

    7.7. No Remote Control Operation No Remote Control Operation. Is the correct voltage presented Is the correct voltage presented at connector P8801 on Meter PCB? at connector P7003 on Main PCB? Between Pin 8 and 1: Between Pin 7 and 14: +3.1 to 3.4V +3.1 to 3.4V Is FFC between...

  • Page 25: Can Not Control Volume

    7.8. Can not control Volume +/- Can not control Volume +/-. Is the correct voltage presented at P8501 on Volume PCB? Between Pin 4 and 3: +4.8 to 5.2V Pin 7 and 3: +3.1 to 3.4V Pin 8 and 3: -12.5 to -11.5V Is the correct voltage presented at P8005 on OLED PCB? Between...

  • Page 26: Can Not Control Input Selection

    7.9. Can not control Input Selection Can not control Input selection. Is the correct voltage presented at P8301 on Selector PCB? Between Pin 1 and 6: +3.1 to 3.4V Is the correct voltage presented at P8004 on OLED PCB? Between Pin 1 and 6: +3.1 to 3.4V Is the correct voltage presented at P7005 on Main PCB?

  • Page 27: No Sub Function (Firmware Update Terminal)

    7.10. No SUB Function (Firmware UPDATE terminal) No SUB Function. Is the correct voltage Presented at JK8602 on Control PCB? Between Pin 1 and 4: +4.8 to 5.2V. Is the correct voltage Presented at P8601 on Control PCB? Between Pin 5 and 8: +4.8 to 5.2V. Is the cable between Control PCB and Digital PCB Damaged?

  • Page 28: No Sound Input From Pc (Usb-B), Coax In Or Opt In

    7.11. No Sound input from PC (USB-B), COAX IN or OPT IN No sound from input terminal. Confirm the symptom by Detected. re-connection or change the cable Connection failure or Cable Failure. from PC, COAX IN or OPT IN. Not detected. Is the correct voltage presented at P9503 on Digital PCB? Is FFC between...

  • Page 29: No Sound From Speaker Unit

    7.12. No Sound from Speaker Unit No Sound from Speaker Unit. Remedy. Speaker Unit failure Confirm the symptom by or Speaker Cable Failure. changing Speaker Unit. Not remedy. <8> Is the soldering condition is okay at speaker lead wire on Speaker L/R PCB? <8>...

  • Page 30: No Sound From Headphone

    7.13. No Sound from Headphone No Sound from Headphone. Is the correct voltage presented at P2901 on Headphone PCB? Is there a connection Between Pin 6 and 5: between AMP PCB and Headphone PCB? Headphone Inserted: +3.0 or over Pin 6 of P6801 and Pin 6 of P2901 Headphone NOT Inserted: +0.1V or lower Replace Headphone PCB.

  • Page 31: No Sound From Line Out Terminal

    7.14. No Sound from LINE OUT Terminal No Sound from LINE OUT Terminal. Is there a connection between P2801 and LINE OUT Terminal on REC Out PCB? Pin 2 of P2801 and Pin 2 of JK2801 (White [L-channel]) Replace REC Out PCB. Pin 3 of P2801 and Pin 2 of JK2802 (Red [R-channel]) Is there a connection between REC Out PCB and MAIN PCB?

  • Page 32: No Meter Operation

    7.15. No Meter Operation No Meter Operation. Input Signal (1kHz, 0dB) and set volume level 22 for investigation. Is the correct voltage presented at P6503 on AMP PCB? Between Replace AMP PCB. Pin 15 and 5: around 145mV (for Meter L) Pin 13 and 5: around 145mV (for Meter R) Is the correct voltage presented at P4552 on Main PCB?

  • Page 33: No System Control (Control Terminal)

    7.16. No System Control (Control Terminal) No System Control Is FFC between Is FFC between P8601 on Control PCB and P4001 on Digital PCB and P9502 on Digital PCB P4553 on Main PCB damaged? damaged? Replace FFC. Replace FFC. Is there a connection in Control PCB? Replace Control PCB.

  • Page 34: No Audio Output From Pre Out Terminal

    7.17. No Audio Output from PRE OUT terminal No audio output from PRE OUT terminal. Is FFC between P6503 on AMP PCB and Replace AMP PCB. P4552 on Main PCB damaged? Still not remedy. Replace FFC. Replace Main PCB. 7.18. No LAPC Function No LAPC Function.

  • Page 35: Pin Function Of Each Connectors

    7.19. Pin function of each connectors Main PCB AMP PCB Main PCB AMP PCB Main PCB AMP PCB P1501 P6001 P4551 P6502 P4552 P6503 SMPS_REGION SMPS_REGION PW_XSW_13R0V PW_XSW_13R0V DGND DGND PW_XSW_13R0V PW_XSW_13R0V PON_GDV_H PON_GDV_H PW_XSW_13R0V PW_XSW_13R0V PON_PLL_H PON_PLL_H PW_14R0V PW_14R0V PW_XSW_13R0V PW_XSW_13R0V PDET_A...

  • Page 36: Function And Possible Failure Pcb Or Module

    7.20. Function and Possible failure PCB or Module This is a table for shown the possible failure PCB or Module for each function. Item No. Function Possible failure PCB or Module LINE IN 1/2, PHONO Main COAX1/2, OPT1/2 Main / Digital PC (USB-B) Main / Digital LINE OUT...

  • Page 37: Disassembly And Assembly Instructions

    8 Disassembly and Assembly Instructions • This section describes the disassembly and/or assembly procedures for all major printed circuit boards & main compo- nents for the unit. (You may refer to the section of “Main components and P.C.B. Locations” as described in this service manual) •...

  • Page 38: Disassembly Flow Chart

    8.2. Disassembly Flow Chart Main Unit Top Cabinet Ass’y Front Panel Unit SMPS P.C.B. Selector P.C.B. AMP P.C.B. Speaker L P.C.B. and Volume P.C.B. Speaker R P.C.B. Main SW P.C.B. Control P.C.B. Digital P.C.B. OLED P.C.B. REC Out P.C.B. Shade Sheet B Main P.C.B.

  • Page 39: Main Components And P.c.b. Locations

    8.3. Main Components and P.C.B. Locations...

  • Page 40: Disassembly Of Top Cabinet Ass'y

    8.4. Disassembly of Top Cabinet 8.5. Disassembly of SMPS P.C.B. Ass’y • Refer to “Disassembly of Top Cabinet Ass’y”. Step 1 Remove 8 screws. Step 1 Remove 13 screws. Step 2 Remove SMPS Top Shield. Step 2 Remove 4 screws. Step 3 Detach 23P Bridge Connector at the connector (P6001) on AMP P.C.B..

  • Page 41: Disassembly Of Amp P.c.b

    Step 5 Remove 6 screws. 8.6. Disassembly of AMP P.C.B. Step 6 Remove 2 screws. • Refer to “Disassembly of Top Cabinet Ass’y”. Step 1 Remove 2 screws. Step 2 Remove 9 screws. Step 3 Remove 3 screws. Step 7 Slightly release the side of the rear panel. Step 4 Remove 4 screws.

  • Page 42: Disassembly Of Speaker L P.c.b. And Speaker R P.c.b

    Step 5 Detach 30P FFC at the connector (P6502) on AMP Step 2 Remove 2 screws. P.C.B.. Step 3 Remove 2 nuts. Step 6 Detach 40P FFC at the connector (P6503) on AMP Step 4 Remove Speaker L P.C.B.. P.C.B.. Step 7 Detach 23P Bridge Connector at the connector (P6001) on AMP P.C.B..

  • Page 43: Disassembly Of Digital P.c.b

    Step 3 Detach 8P Cable at the connector (P8601) on Control Step 3 Remove 2 screws. P.C.B.. Step 4 Detach 8P Cable at the connector (P9502) on Digital Step 4 Remove Control P.C.B.. P.C.B.. Step 5 Detach 30P FFC at the connector (P9503) on Digital P.C.B..

  • Page 44: Disassembly Of Main P.c.b

    Step 3 Detach 4P Cable at the connector (P2801) on REC Out Step 2 Remove 5 screws. P.C.B.. Step 3 Remove 2 screws. Step 4 Remove REC Out P.C.B.. Step 4 Detach 30P FFC at the connector (P4551) on Main P.C.B..

  • Page 45: Disassembly Of Selector P.c.b

    Step 2 Remove 1 screw. Step 2 Desolder the pins of Selector P.C.B.. Step 3 Detach 30P FFC at the connector (P7005) on Main Step 3 Detach 6P FFC at the connector (P8301) on Selector P.C.B.. P.C.B.. Step 4 Detach 14P FFC at the connector (P7003) on Main Step 4 Remove Selector P.C.B..

  • Page 46: Disassembly Of Main Sw P.c.b

    8.15. Disassembly of Main SW P.C.B. 8.17. Disassembly of Shade Sheet B • Refer to “Disassembly of Top Cabinet Ass’y”. • Refer to “Disassembly of Top Cabinet Ass’y”. • Refer to “Disassembly of Front Panel Unit”. • Refer to “Disassembly of Front Panel Unit”. Step 1 Remove 3 screws.

  • Page 47: Disassembly Of Meter Illumi Led L P.c.b. And Meter Illumi Led R P.c.b

    8.19. Disassembly of Meter Illumi 8.21. Disassembly of Meter Unit LED L P.C.B. and Meter Illumi • Refer to “Disassembly of Top Cabinet Ass’y”. • Refer to “Disassembly of Front Panel Unit”. LED R P.C.B. • Refer to “Disassembly of Shade Sheet B”. •...

  • Page 48: Service Position

    9 Service Position Note: For description of the disassembly procedures, see the Section 8. 9.1. Checking and Repairing of SMPS P.C.B., AMP P.C.B., Main P.C.B., Con- trol P.C.B., Digital P.C.B. and REC Out P.C.B. Step 1 Remove Top Cabinet Ass’y. Step 2 Remove Front Panel Unit.

  • Page 49: Measurement And Adjustment

    10 Measurement and Adjustment 10.1. Adjustment of the Peak Power Meter Subject After replacement of METER UNIT or AMP PCB, meter adjustment is required. Connection Connect CD Player or Audio device to COAX1 IN terminal to play Audio Test Disc or USB Memory with Audio Test sound.
  • Page 50 Go into Meter Adjustment mode: Step 1. Turn the unit off and disconnect the AC mains lead from wall outlet. Reconnect the AC mains lead. Step 2. Press “AMP” button on the remote control and keep pressing until step 4. And then turn the unit on by pressing “Standby/on”...

  • Page 51: Block Diagram

    11 Block Diagram OLED PCB MAIN PCB POWER ON/OFF SWITCH ENC SELECTOR Cotroller PCB OTHER COMPONENTS VOLUME From SMPS BURST/AC Sync/ USB-A OLED Region UPDATE Wire IC7001 MAIN MCON UART Tx,Rx METER PCB VCCUSBB_DSDPCM IC9511 LED R LED L IC9003 LOGIC IC AUDIO USB DSP...

  • Page 52: Wiring Connection Diagram

    P7003 P9503 P4552 P4551 P9502 DIGITAL P.C.B. P3003 P7005 P4001 MAIN P.C.B. SPEAKER R SPEAKER L P4553 P.C.B. P.C.B. P2001 P8601 P2801 REC OUT P.C.B. CONTROL P.C.B. NOTE: " * " REF IS FOR INDICATION ONLY. SU-G700E/PP WIRING CONNECTION DIAGRAM...

  • Page 53: Exploded View And Replacement Parts List

    13 Exploded View and Replacement Parts List 13.1. Cabinet Parts Location 1 (METER ILLUMI LED L P.C.B.) (METER ILLUMI LED R P.C.B.) (OLED P.C.B.) (HEADPHONE P.C.B.) (MAIN SW P.C.B.) (METER P.C.B.) (SELECTOR P.C.B.) (VOLUME P.C.B.) SU-G700 NOTE: " * " PART IS NOT SUPPLIED / REF IS FOR INDICATION ONLY. CABINET DRAWING...

  • Page 54: Cabinet Parts Location

    13.2. Cabinet Parts Location 2 (FOR E ONLY) (FOR PP ONLY) (SMPS P.C.B.) (AMP P.C.B.) 55 55 SU-G700 CABINET DRAWING NOTE: " * " PART IS NOT SUPPLIED / REF IS FOR INDICATION ONLY.

  • Page 55: Cabinet Parts Location

    13.3. Cabinet Parts Location 3 (SPEAKER L P.C.B) (SPEAKER R (CONTROL P.C.B.) P.C.B) (DIGITAL P.C.B.) (REC OUT P.C.B.) (MAIN P.C.B.) SU-G700 CABINET DRAWING NOTE: " * " PART IS NOT SUPPLIED / REF IS FOR INDICATION ONLY.

  • Page 56: Packaging

    13.4. Packaging (FOR PP ONLY) (FOR E ONLY) (FOR E ONLY) SU-G700 POLYFOAM (TOP FRONT) POLYFOAM (TOP REAR) POLYFOAM (BOTTOM FRONT) POLYFOAM (BOTTOM REAR) SU-G700 PACKAGING DRAWING...

  • Page 57: Mechanical Replacement Part List

    13.5. Mechanical Replacement Part List Safety Ref. Part No. Part Name & Qty Remarks Description TXJ010AJ6E WIRE (METER Safety Ref. Part No. Part Name & Qty Remarks ILLUMI Description METER ILLUMI LED CABINET TXJ012AJ6E WIRE CHASSIS (SPEAKER-AMP) TXJ013AJ6E WIRE BLACK K4AA01J00005 SPEAKER TERMI-...
  • Page 58 Safety Ref. Part No. Part Name & Qty Remarks Description TKFA22501A REAR PANEL G700PP- TKPB68101 METER WINDOW TMM23417 PCB SUPPORT TMWX0891 TERMINAL HOLDER TMWX0901 MAIN PCB SUPPORT RMA2255-J GND ANGLE TMXX0921 SHADE SHEET A TMXX0931 SHADE SHEET B TYL0018 GRILLE METER ASS'Y TYL0019...

  • Page 59: Electrical Replacement Parts List

    13.6. Electrical Replacement Parts List Safety Ref. Part No. Part Name & Qty Remarks Description Safety Ref. Part No. Part Name & Qty Remarks PCB6 TNPA6361 CONTROL P.C.B Description PCB7 TNPA6366 METER P.C.B PCB8 TNPA6337 METER ILLUMI LED PRINTED CIRCUIT L P.C.B BOARDS PCB9...

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