Panasonic SA-AK750GCP Service Manual
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Panasonic SA-AK750GCP Service Manual

Cd stereo system
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Notes: This model's CD mechanism changer unit is CRS1. Please refer to the original Service Manual
(Order No. MD0509368C0) for this mechanism.

Specifications

n AMPLIFIER SECTION
RMS output power
THD 10%, both channels driven
1 kHz
(Low channel)
10 kHz
(High channel)
60 Hz
(Subwoofer channel)
Total output power
n FM/AM TUNER, TERMINALS SECTION
Preset station
Frequency Modulation (FM)
Frequency range
Sensitivity
S/N 26 dB
Antenna terminal(s)
Amplitude Modulation (AM)
Frequency range
Sensitivity
S/N 20 dB (at 999 kHz)
Music Port input jack
110 W per channel (3 Ω)
110 W per channel (3 Ω)
220 W per channel (6 Ω)
660 W
FM 20 stations
AM 15 stations
87.50 to 108.00 MHz (100 kHz
steps)
4.0 µV (IHF)
2.2 µV
75 Ω (unbalanced)
522 to 1629 kHz (9 kHz step)
520 to 1630 kHz (10 kHz step)
560 µV/m
SA-AK750GCP
Colour
(K)... Black Type
Terminal
Sensitivity
Phone jack
Terminal
MIC jack
Terminal
Sensitivity
n CASSETTE DECK SECTION
Track system
Heads
Record/playback
Erasure
Motor
Recording system
Erase system
Tape speed
Overall frequency response (+3, -6 dB) at DECK OUT
NORMAL
S/N ratio
Wow and flutter
Fast forward and rewind time
n DISC SECTION
Disc played [8 cm or 12 cm]
(1) CD-Audio (CD-DA)
© 2007 Matsushita Electric Industrial Co. Ltd.. All
rights
reserved.
distribution is a violation of law.
ORDER NO. MD0703023CE
CD Stereo System
Stereo, 3.5 mm jack
100 mV, 4.7 kΩ
Stereo, 3.5 mm jack
Mono, 3.5 mm jack
0.7 mV, 680 Ω
4 track, 2 channel
Solid permalloy head
Double gap ferrite head
DC servo motor
AC bias 100 kHz
AC erase 100 kHz
35 Hz to 14 kHz
50 dB (A weighted)
0.18 % (WRMS)
Approx. 120 seconds with
C-60 cassette tape
Unauthorized
copying
4.8 cm/s
and

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Summary of Contents for Panasonic SA-AK750GCP

  • Page 1: Specifications

    ORDER NO. MD0703023CE CD Stereo System SA-AK750GCP Colour (K)... Black Type Notes: This model’s CD mechanism changer unit is CRS1. Please refer to the original Service Manual (Order No. MD0509368C0) for this mechanism. Specifications n AMPLIFIER SECTION Terminal Stereo, 3.5 mm jack...

  • Page 2: Table Of Contents

    SA-AK750GCP (2) CD-R/RW (CD-DA, MP3* formatted disc) 32 kHz, 44.1 kHz, 48 kHz (3) MP3* Audio output (MP3) * MPEG-1 Layer 3, MPEG-2 Layer 3 Number of channels 2 channel Bit rate Frequency response (MP3) 20 Hz to 20 kHz (0+/-1.0 dB)
  • Page 3 SA-AK750GCP 10.10. Disassembly of Front Panel Unit 17.2. Deck/ Deck Mechanism Diagram 10.11. Disassembly for Panel P.C.B. 17.3. Main Diagram 10.12. Disassembly of Tact Switch P.C.B. 17.4. Panel Diagram 10.13. Disassembly of USB P.C.B. 17.5. Power Diagram 10.14. Disassembly of Deck mechanism unit 17.6.

  • Page 4: Safety Precautions

    SA-AK750GCP 1 Safety Precautions 1.1. General Guidelines 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, ensure that all the protective devices such as insulation barriers and insulation papers shields are properly installed.

  • Page 5: Safety Part Information

    SA-AK750GCP · 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 SA-AK750GCP Caution Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to...

  • Page 7: Handling Precautions For Traverse Deck

    SA-AK750GCP 3 Handling Precautions For Traverse Deck The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by the static electricity of clothes or our human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
  • Page 8 SA-AK750GCP...

  • Page 9: Precaution Of Laser Diode

    SA-AK750GCP 4 Precaution of Laser Diode Caution : This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens. Wavelength : 785 nm(CD)/662 nm(DVD) Maximum output radiation power from pick up : 100 µW/VDE Laser radiation from pick up unit is safety level, but be sure the followings: 1.

  • Page 10: Warning

    SA-AK750GCP 5 Warning 5.1. Service caution based on legal restrictions 5.1.1. General description about Lead Free Solder (PbF) The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation.

  • Page 11: Accessories

    SA-AK750GCP 6 Accessories Remote Control FM Antenna Wire AC Cord AM Loop Antenna AC plug adaptor...

  • Page 12: Operating Procedures

    SA-AK750GCP 7 Operating Procedures 7.1. Main Unit Key Buttons Operations 7.2. Remote Contraol Key Buttons Operations...
  • Page 13 SA-AK750GCP...

  • Page 14: New Features

    SA-AK750GCP 8 New Features 8.1. Using the Music Port & Connecting and Playing a USB Mass Storage Class Device This feature enables you to enjoy music from a portable audio equipment.
  • Page 15 SA-AK750GCP With reference to page 15 of the operating instruction manual.
  • Page 16 SA-AK750GCP With reference to page 16 of the operating instruction manual.

  • Page 17: Self Diagnosis And Special Mode Setting

    SA-AK750GCP 9 Self diagnosis and special mode setting This unit is equipped with functions for checking and inspecting namely: Self-Diagnostic and Test Mode. 9.1. Service Mode Summary Table The service modes can be activated by pressing various button combination on the main unit and remote control unit. Below is the...
  • Page 18 SA-AK750GCP Item FL Display Key Operation Mode Name Description Front Key Doctor Mode To enter into Doctor (Display 1) In any mode: Mode for checking of 1. Press [ ] button on main unit various items and follow by [4] and [7] on remote control.
  • Page 19 SA-AK750GCP Item FL Display Key Operation Mode Name Description Front Key Tape Eject Test To check on the tape In doctor mode: eject function (For deck 1. Press [0] button on remote control. 1/2) FL Display Test To check In doctor mode:...

  • Page 20: Reliability Test Mode (Crs1 Mechanism)

    SA-AK750GCP Note: Microprocessor firmware refers to version number for microprocessor IC located on PANEL P.C.B.. It is subject to change which would be updated accordingly. ROM correction checksum refers to the HEX code that is displayed upon key buttons pressed if an EEPROM is loaded in the unit.

  • Page 21: Error Code Table Display

    SA-AK750GCP 9.4. Error code Table Display Self-Diagnosis Function (refer Section 9.2) provides information on any problems occuring for the unit and its respective components by displaying the error codes. These error code such as U**, H** and F** are stored in memory and held unless it is...
  • Page 22 SA-AK750GCP The error code is automatically display after entering into self-diagnostic mode. 9.4.1. Error Code Table for Deck Mechanism Error Code Diagnosis Contents Description of error Automatic FL Display Remarks Mode SW, plunger Normal operation during For deck mechanism unit.
  • Page 23 SA-AK750GCP Error Code Diagnosis Contents Description of error Automatic FL Display Remarks HOME Cam gear/gear Cam gear does not move to For CD changer unit (CRS1). assembly abnormal “HOME” position under Press [SINGLE CHANGE] on main unit following conditions for next error.
  • Page 24 SA-AK750GCP · Only the first 5 errors will be memorized (in backup memory). The subsequence error shall be ignored and not memorize. For system with EEPROM as memory backup,memory space in EEPROM is neccesary. 2. To display all error code memorized In CRS1 Self-Diagnostic mode, press [SINGLE CHANGE] to display subsequence error code.

  • Page 25: Assembling And Disassembling

    SA-AK750GCP 10 Assembling and Disassembling 10.1. Caution Special Note: This model uses a new CD changer unit CRS1. In this following section does not contain the necessary disassembly & assembly information for the CD changer unit (CRS1) except the disasembly & assembly of traverse unit. Kindly refer to the original service manual for the CD changer unit.

  • Page 26: Disassembly Flow Chart

    SA-AK750GCP 10.2. Disassembly flow chart The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the chart as below.

  • Page 27: Main Parts Location

    SA-AK750GCP 10.3. Main Parts Location...

  • Page 28: Disassembly Of Top Cabinet

    SA-AK750GCP 10.4. Disassembly of Top Cabinet Step 1 Remove 3 screws on both sides on top cabinet. Step 2 Remove 5 screws at the rear. Step 3 Lift the sides of top cabinet outwards. Step 4 Push the top cabinet backwards to release catches.

  • Page 29: Disassembly Of Rear Panel

    SA-AK750GCP Step 4 Lift the CD changer unit upwards to remove it. · Disassembly of Mecha Chassis Step 5 Remove 2 screws. Step 6 Remove the Mecha Chassis. Note: For disassembly & assembly of traverse unit, please refer to section 10.16 of this service manual.Please refer to original Service Manual for the Disassembly and Assembly of the CD Changer Unit (CRS1).
  • Page 30 SA-AK750GCP Step 2 Detach cable CN2810 at Main P.C.B.. Step 3 Detach FFC cables (CN2801 & CN2805) at Main P.C.B.. Step 4 Remove rear panel.

  • Page 31: Disassembly Of Main P.c.b

    SA-AK750GCP 10.7. Disassembly of Main P.C.B. · Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 4) of Item 10.6 Step 1 Detach FFC cables (CN2803, CN2806 & CN3200) at Main P.C.B..

  • Page 32: Disassembly Of Power P.c.b

    SA-AK750GCP 10.9. Disassembly of Power P.C.B. · Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 4) of Item 10.6 · Follow the (Step 1) - (Step 3) of Item 10.7 Step 1 Remove the 5 screws on Power P.C.B..

  • Page 33: Disassembly Of Front Panel Unit

    SA-AK750GCP Step 3 Remove up the heat sink sub assembly (with IC5501). Step 4 Remove screw and IC clip. Step 5 Remove IC5501 from the sub assembly. Caution: During assembly of the heat sink sub assembly (with IC5501) all soldering points is touch-up to avoid dry- joints.

  • Page 34: Disassembly For Panel P.c.b

    SA-AK750GCP Step 5 Remove the front panel unit. Note: Ensure 2 claws located at the bottom chassis is seated into the 2 slots at bottom of front panel at 2 catches (one on each side) of bottom chassis to be aligned to front panel’s slot.

  • Page 35: Disassembly Of Tact Switch P.c.b

    SA-AK750GCP Step 2 Remove Lid. Note: Do not misplace the spring. 10.12. Disassembly of Tact Switch P.C.B. · Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 Step 1 Remove 4 screws at Tact Switch P.C.B..

  • Page 36: Disassembly Of Deck Mechanism Unit

    SA-AK750GCP Step 4 Unsolder 4 points. Step 5 Remove USB P.C.B.. 10.14. Disassembly of Deck mechanism unit · Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 Step 1 Remove the 4 screws.

  • Page 37: Disassembly Of Traverse Unit

    SA-AK750GCP Step 3 Remove Deck P.C.B. Step 2 Desolder wire at deck motor terminals. 10.16. Disassembly of Traverse Unit · Follow the (Step 1) - (Step 5) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 Important notes: Ensure all the trays are in the “STOCK”...

  • Page 38: Disassembly For Deck Mechanism

    SA-AK750GCP Step 3: Remove the traverse unit as arrow shown. · Assembly of Traverse Unit Step 2: Push the traverse slide plate as arrow shown to lock the traverse unit. Step 1: Turn over the unit and install the traverse unit.
  • Page 39 SA-AK750GCP 10.17.1. Replacement of Pinch Roller and Head Block...
  • Page 40 SA-AK750GCP 10.17.2. Replacement of Motor, Capstan Belt A, Capstan Belt B, and Winding Belt...

  • Page 41: Disassembly Of Deck Mechanism P.c.b

    SA-AK750GCP 10.18. Disassembly of Deck Mechanism P.C.B. · Follow the (Step 1) - (Step 4) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 ·...

  • Page 42: Disassembly Of Cassette Lid

    SA-AK750GCP 10.19. Disassembly of cassette lid · Follow the (Step 1) - (Step 4) of Item 10.4 · Follow the (Step 1) - (Step 4) of Item 10.5 · Follow the (Step 1) - (Step 5) of Item 10.10 · Follow the (Step 1) - (Step 3) of Item 10.14 Step 1 Lift up the lever upward, open the cassette deck.
  • Page 43 SA-AK750GCP Step 2 Push the lever upward and open the cassette lid. Remove the cassette tape. Note: Follow 10.19 Disassembly of cassette lid (Step1) to (Step 3). Remove the cassette tape.

  • Page 44: Service Fixture And Tools

    SA-AK750GCP 11 Service Fixture and Tools Service Tools Extension FFC (A) Deck P.C.B. - Main P.C.B. REEX0485 (14 Pins) 12 Service Positions Note: For description of the disassembly procedures, see the Section 10. 12.1. Checking and Repairing of Main P.C.B.

  • Page 45: Checking And Repairing Of Transformer P.c.b

    SA-AK750GCP 12.2. Checking and Repairing of Transformer P.C.B. 12.3. Checking and Repairing of Panel, Deck & Deck Mechanism P.C.B.

  • Page 46: Checking And Repairing Of Power P.c.b

    SA-AK750GCP 12.4. Checking and Repairing of Power P.C.B.

  • Page 47: Procedure For Checking Operation Of Individual Parts Of Deck Mechanism Unit

    SA-AK750GCP 13 Procedure for Checking Operation of Individual Parts of Deck Mechanism Unit 13.1. Operation Check with Cassette Tape 1. Pull up the EJECT lever using a rubber band. (Fig. 6) 2. Supply DC5V to MOTOR. (→ MOTOR rotates.) (Fig. 5) 3.
  • Page 48 SA-AK750GCP...

  • Page 49: Measurement And Adjustments

    SA-AK750GCP 14 Measurement And Adjustments 14.1. Cassette Deck Section 14.1.1. Requirements · Test tape (QZZCFM) (QZZCWAT) · Normal blank cassette tape (QZZCRA) · Digital frequency counter · Oscilloscope · Electrical voltmeter · Headphone jack output jig (Fig 8) 14.1.2. Setting of Unit ·...
  • Page 50 SA-AK750GCP Fig. 10 Fig. 11 14.1.5. Bias Voltage Check 1. Connect an electrical voltmeter. (Fig 12) (Fig 9 for location of test points) 2. Set the function to “TAPE” position. 3. Insert a normal blank cassette tape (QZZCRA). 4. While pressing and holding down [REC( )] button, press [TAPE( )] button to pause the recording mode.

  • Page 51: Voltage And Waveform Chart

    SA-AK750GCP 15 Voltage and Waveform Chart Note: Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point, because it may differ from an actual measuring value due to difference of Measuring instrument and its measuring condition and product itself.

  • Page 52: Power P.c.b. & Transformer P.c.b

    SA-AK750GCP 15.3. Power P.C.B. & Transformer P.C.B. 15.4. Panel P.C.B.

  • Page 53: Main P.c.b

    SA-AK750GCP 15.5. Main P.C.B.

  • Page 54: Deck P.c.b

    SA-AK750GCP 15.6. Deck P.C.B. 15.7. Waveform Chart...

  • Page 55: Wiring Connection Diagram

    SA-AK750GCP 16 Wiring Connection Diagram JK2803 9 ..1 CN3601 H5104 CN2810 TUNER MOTOR PACK CN2809 POWER P.C.B. SOLDER SIDE CN2801 MAIN P.C.B. SOLDER SIDE RIGHT SPEAKERS TO CRS1 JK5101 CN3200 (CN1) LEFT SPEAKERS CN2808 SUBWOOFER...
  • Page 56 SA-AK750GCP...

  • Page 57: Block Diagram

    SWITCH PROCESSOR/ TO MAIN CN7002 CN2801 (1/2) DIGITAL FILTER 3.3V 3.3V 3.3V 3.3V D/A CONVERTER MUTE PC1 4 CN7002 CN2801 [CH1] LCH OUT 3.3V TO MAIN CN7002 CN2801 (2/2) RCH OUT MUTE PC2 2 [CH2] SA-AK750GCP CD SERVO BLOCK DIAGRAM...

  • Page 58: Deck/ Deck Mechanism Diagram

    : AM SIGNAL LINE : FM/AM SIGNAL LINE : USB SIGNAL LINE : FM SIGNAL LINE : AUX SIGNAL LINE : TAPE PLAYBACK SIGNAL : TAPE RECORD SIGNAL LINE ( ) Indicates the Pin No. of Right Channel. SA-AK750GCP DECK/DECK MECHANISM BLOCK DIAGRAM...

  • Page 59: Main Diagram

    FROM DECK Q2501 D2503 LM.1 LEVEL METER CONTROL SWITCH ASPDA ASPCLK IDCDET Q2942 FAN MOTOR ON/OFF SWITCH TO FAN D2947 Q2943 FAN SUPPLY FROM POWER CONTROL SWITCH Q2949 Q2948 D2946 DC DETECT DC DETECT SWITCH SWITCH SA-AK750GCP MAIN 1/2 DIAGRAM...
  • Page 60 QR3105 QR3106 Q2803 SWITCH SWITCH IC4000 C0DBZGC00067 RESET (MICRO-P) 3.3 REGULATOR SWITCH Q3601 STBY SWITCH Q2950 D2936 DECK SUPPLY DVREF CONTROL SWITCH IC2872 C0CBAHG000011 AV REGULATOR IC Q2950 DECK SUPPLY CONTROL SWITCH 3.3V D2811 D2813 D3400 SA-AK750GCP MAIN 2/2 DIAGRAM...

  • Page 61: Panel Diagram

    VR6511 VOLUME TO MAIN (1/2) JK6751 M.PORT S6201-S6207 TO MAIN (2/2) JK6551 HEADPHONE TO MAIN (1/2) SUB PANEL CIRCUIT S6301-S6309 VR6491 +VREF MIC VOLUME +VREF TO MAIN (2/2) S6106-S6108 S6101-S6105 QR6457 MOT10V DRIVE QR6460 SUB PANEL P.C.B SA-AK750GCP PANEL DIAGRAM...

  • Page 62: Power Diagram

    FAN ON/OFF SWITCH SWITCH D5126 TO MAIN (1/2) Q5111 Q5101,Q5110 +15V REGULATOR Q5102 Q5108,Q5109 CURRENT CONTROL SWITCH TO TRANSFORMER Q5112,Q5114 Q5113 CURRENT STABLISER CURRENT LMIITER 11V REGULATOR SWITCH IC5101 TO MAIN C0DAZYY00005 (2/2) REGULATOR IC D5130 5.6V 3.3V SA-AK750GCP POWER DIAGRAM CTRL...

  • Page 63: Usb/ Transformer Diagram

    STCLK 59 6 USBD+ CD_DATA 58 CD_STAT 57 Q5953 RL5950 CD_CLK 56 PCONT SWITCH TO PANEL I2C_REQ/WR_START Q5952 T5951 VERR 50 SYNCHRONISATION SWITCH D5966 JK5950 L5950 Z5950 D5951, Q5950 Q5954 D5952 D5963 CURRENT VOLTAGE LIMITING REGULATOR SWITCH SA-AK750GCP USB/TRANSFORMER DIAGRAM...
  • Page 64 SA-AK750GCP...

  • Page 65: Notes Of Schematic Diagram

    SA-AK750GCP 18 Notes Of Schematic Diagram (All schematic diagrams may be modified at any time with : CD Signal line the development of new technology) : Tape Record Signal line Notes: S971: Mode switch. : Tape Playback Signal line S972: Half switch.
  • Page 66 SA-AK750GCP...

  • Page 67: A) Cd Servo Circuit

    12 11 R7220 R7330 W7002 W7004 5.6K C7335 X7201 C7315 IC7002 0.47 H2B169500005 BA5948FPE2 C7334 4 CH DRIVE IC C7338 10V220 0.056 R7331 R7323 3.3k R7325 R7315 3.3k R7332 R7335 M7301 M7302 TRAVERSE MOTOR SPINDLE MOTOR SA-AK750GCP CD SERVO CIRCUIT...

  • Page 68: B) Main Circuit

    SA-AK750GCP 19.2. (B) Main Circuit SCHEMATIC DIAGRAM - 2 MAIN CIRCUIT : TAPE PLAYBACK SIGNAL LINE : FM/AM SIGNAL LINE : MAIN SIGNAL LINE : AUX SIGNAL LINE : MIC SIGNAL LINE : +B SIGNAL LINE : CD SIGNAL : TAPE RECORD SIGNAL LINE...

  • Page 69: Main Circuit

    SA-AK750GCP SCHEMATIC DIAGRAM - 3 MAIN CIRCUIT : +B SIGNAL LINE : TAPE RECORD SIGNAL LINE : MAIN SIGNAL LINE : MIC SIGNAL LINE C3711 R3720 MIC_MIX R2335 R2331 R2334 R3700 W587 C2333 C3700 REC_L C3704 R3706 C2331 Q2317,Q2417 REF_L...
  • Page 70 SA-AK750GCP SCHEMATIC DIAGRAM - 4 MAIN CIRCUIT : FM/AM SIGNAL LINE : MAIN SIGNAL LINE : AUX SIGNAL LINE : USB SIGNAL LINE : +B SIGNAL LINE : CD SIGNAL LINE W658 D2811 B0ADCJ000020 R2894 R2121 3.3k TO MAIN SECTION (1/4) C2121 +3.3V...
  • Page 71 SA-AK750GCP SCHEMATIC DIAGRAM - 5 MAIN CIRCUIT : AUX SIGNAL LINE : USB SIGNAL LINE : +B SIGNAL LINE : MAIN SIGNAL LINE : MIC SIGNAL LINE TO MAIN SECTION (2/4) IDCDET 0.1u C2940 Q2942 R2940 B1ACKD000006 820k FAN MOTOR ON/OFF SWITCH...

  • Page 72: C) Panel Circuit

    W1002 C6502 R6753 W901 Q6501 C6510 L6501 C6504 R6751 3.3K MUSIC PORT L6502 C6509 R6509 W910 C6753 C6751 C6503 0.01 0.01 R6503 0.047 C6506 C6505 0.01 R6506 W1004 0.047 2.2K W1000 JK6501 VR6511 JK6751 EVUF2AF15B14 MIC VOLUME SA-AK750GCP PANEL CIRCUIT...

  • Page 73: D) Sub Panel Circuit & (G) Deck Mechanism Circuit

    R6306 2.2K R6491 R6107 S6306 R6307 2.7K S6108 2.7K M.EQ- C6492 C6491 R6311 100P 100P H.BASS R6108 /SUBW S6307 4.7K R6308 R6310 4.7K M.EQ S6308 COM B R6309 6.8K M.EQ+ S6309 VR6491 EVEKE2F3024B VOLUME JOG SA-AK750GCP SUB PANEL/DECK MECHANISM CIRCUIT...

  • Page 74: E) Power Circuit

    100P 100P Q5202 Q5201 Q5103,Q5104 X5202 B1ADCF000063 B1ABCF000176 W1099 FREQUENCY HOPPING R5207 FAN ON/OFF SWITCH SWITCH 6.8K Q5104 Q5202 Q5103 X5201 H2A415300001 R5209 C5204 100P AGND C5205 C5208 X5202 6.3V220u 0.1u H2A375300003 W1095 AGND D5126 R5150 B0ACCK000005 220K SA-AK750GCP POWER CIRCUIT...
  • Page 75 R5110 MUTE_F W1103 2.2K mUTE-F_HOP C5133 W5508 DIAGRAM-5 MOTOR12V 6.3V100 D5103 C5113 MOTOR 12V B0BA5R100004 50V33 D5109 XM5.3V R5132 XM5.3V B0BA01100004 AGND Q5109 K1000 Q5114 +3.3V 2SB0709AHL ERJ6GEY0R00V CN5103 W5511 B1ABCF000176 VOLTAGE REGULATOR 11V REGULATOR E5103 K9ZZ00001279 SA-AK750GCP POWER CIRCUIT...

  • Page 76: F) Deck Circuit

    R1337 R1332 B0ACCK000005 MOTOR_GND MOTOR_H C1311 C1320 16V47 50V1 R1331 DECK MECHANISM (CS971) Q1315 CN1305 7.5K ON SCHEMATIC DIAGRAM-7 Q1314 R1344 R1342 R1341 R1374 R1343 3.3K Q1316 WR1903 R1345 2SD09650RA SWITCH Q1314 Q1315 B1GDCFGH0002 B1ACKD000006 SWITCH SWITCH SA-AK750GCP DECK CIRCUIT...

  • Page 77: H) Transformer Circuit

    SUB TRANSFORMER B1AACF000064 C5964 PCONT SWITCH 0.01u C5951 JK5950 0.01u AC IN C5953 0.01u 110V-127V/220V-240V R5952 Z5950 250V T5AL 50Hz/60Hz 4.7K ERZV10V511CS R5958 C5963 D5969 Q5952 B0BA6R800008 B1GACFJJ0018 C5962 C5952 SYNCHRONISATION SWITCH 10V220 C5954 R5957 10V47 0.01 SA-AK750GCP TRANSFORMER CIRCUIT...

  • Page 78: I) Usb Circuit

    LB938 MAIN CIRCUIT CD_DATA (CN3200) IN DGND SCHEMATIC J0JAC0000021 LB840 STCLK DIAGRAM-4 TERR J0JAC0000021 LB841 STREQ J0JAC0000021 LB843 STIN J0JAC0000021 LB845 CD_MLD J0JAC0000021 LB846 CD_NRST J0JAC0000021 LB848 M_NRST DGND J0JHC0000045 LB850 LB852 D3.3V DGND J0JHC0000045 MMOD P901 SA-AK750GCP USB CIRCUIT...

  • Page 79: Printed Circuit Board

    SA-AK750GCP 20 Printed Circuit Board Note: Circuit board diagrams may be modified at any time with the development of new technology.

  • Page 80: A) Cd Servo P.c.b., (F) Deck P.c.b. & (G) Deck

    SA-AK750GCP 20.1. (A) CD Servo P.C.B., (F) Deck P.C.B. & (G) Deck Mechanism P.C.B. CD SERVO P.C.B (REPV0111A) DECK P.C.B (REPV0134B) (RF) TP51 C7227 W1930 TP19 W7014 Q1309 CN1305 Q1310 TP14 C7204 W7015 W1909 W1935 C7226 R7212 TP18 TP50 C7228...

  • Page 81: B) Main P.c.b

    SA-AK750GCP 20.2. (B) Main P.C.B. MAIN P.C.B (REPV0130C) Q2554 W574 R2556 R2447 C2705 R2702 R2941 R2565 R2561 R2721 R2446 C2941 C2312 C2240 R2564 C2552 Q2441 R2722 R2560 R2145 R2705 R2703 W277 R2241 C2983 R2944 R2557 C2722 Q2552 C2981 R2315 C2703...

  • Page 82: C) Panel P.c.b

    SA-AK750GCP 20.3. (C) Panel P.C.B. PANEL P.C.B (REPV0131B) S6103 S6201 (CD1) (OPEN/CLOSE) R6481 QR6461 R6202 R6105 R6760 S6202 S6102 (CD2) R6759 (MULTI CHANGE) QR6462 W807 R6632 W808 W809 S6203 R6758 R6102 (CD3) L6553 R6756 L6551 W909 S6104 (SINGLE CHANGE) R6755...

  • Page 83: D) Sub Panel P.c.b. & (I) Usb P.c.b. (Side A & B)

    SA-AK750GCP 20.4. (D) Sub Panel P.C.B. & (I) USB P.C.B. (Side A & B) SUB PANEL P.C.B (REPV0131B) USB P.C.B (REPV0101A) JW6001 D6462 (VOL. LED) S6304 S6305 R 6 3 0 2 R 6 3 0 3 ( T U N E R )

  • Page 84: E) Power P.c.b. 20.6. (H) Transformer P.c.b

    SA-AK750GCP 20.5. (E) Power P.C.B. POWER P.C.B (REPV0133A) H5104 C5114 Q5201 Q5202 C5115 C5103 IC5201 C5210 W1003 W1005 C5208 W1092 X5201 W1099 R5204 R5514 C5172 C5701 R5206 R5205 W1094 W1095 W1093 C5102 W1007 C5205 R5103 R5209 R5419 W1096 C5121 R5106...

  • Page 85: H) Transformer P.c.b

    SA-AK750GCP 20.6. (H) Transformer P.C.B. TRANSFORMER P.C.B (REPV0132B) T5951 250V T5AL R5954 (SUB TRANSFORMER) Q5954 D5968 C5953 Q5950 J5955 R5952 D5972 Z5950 C5951 C5952 D5952 RL5950 C5954 250V T2.5AL JK5950 Q5952 W5914 Q5953 W5915 CN5951 R5958 D5970 AC IN ~...
  • Page 86 SA-AK750GCP...

  • Page 87: Illustration Of Ics, Transistors And Diodes

    SA-AK750GCP 21 Illustration of ICs, Transistors and Diodes C0AABB000125 C0ABBB000244 (8P) C0CBAHG00011 C1AA00000612 C0DBZYE00002 (8P) C1BB00001121 (100P) MN6627954MA (100P) C2CBYY000423 (100P) C0HBB0000057 (44P) MNZSFB5KJM1 (64P) C0DAZYY00005 AN7326K (26P) C0DBZGC00067 C0JBAB000011(14P) BA5948FPE2 C0GAG0000007 C1AA00000755 (24P) CNB13030R2AU B1ADCF000001 2SB0709AHL B1AAKD000014 2SD09650RA B1DEGM000026...

  • Page 88: Terminal Function Of Ic's

    SA-AK750GCP 22 Terminal Function of IC's 22.1. IC7001 (MN6627954MA) Servo Processor,Digital Signal Processor/Digital filter and D/A Converter Pin No. Mark Function Pin No. Mark Function DRAM address signal O/P 11 IREF Reference I/P DRAM address signal O/P 9 PLLF PLL Loop Filter Terminal (Phase...

  • Page 89: Ic7002 (Ba5948Fpe2) Ic 4Ch Drive

    SA-AK750GCP 22.2. IC7002 (BA5948FPE2) IC 4CH Drive Pin No. Mark Function Pin No. Mark Function Motor Driver 92 Input Motor Drive (3) reverse - action output Turntable Motor Drive Signal (“L”:ON) Motor Drive (3) forward - action output Motor Drive (1) Input...
  • Page 90 SA-AK750GCP Pin No. Mark Function /Reset_SW CD Limit Switch Input for the most Inner Point (Active Low) HOME_SW Home Switch for CRS1 CD_RST CD Reset output CLOSE_SW CLOSE switch for CRS1 OPEN_SW Open switch for CRS1 CRS1 motor CW CRS1 motor CCW...

  • Page 91: Exploded Views

    SA-AK750GCP 23 Exploded Views 23.1. Cabinet Parts Location...
  • Page 92 SA-AK750GCP...

  • Page 93: Deck Mechanism Parts Location (Raa4403-S)

    SA-AK750GCP 23.2. Deck Mechanism Parts Location (RAA4403-S)

  • Page 94: Packaging

    SA-AK750GCP 23.3. Packaging...

  • Page 95: Replacement Parts List

    SA-AK750GCP 24 Replacement Parts List Notes: · Important safety notice: Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardent (resistors), high-quality sound (capacitors), low noise (resistors), etc are used. When replacing any of these components, be sure to use only manufacturer’s specified parts shown in the parts list.
  • Page 96 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks RXQ0470-2 PLUNGER ASS’Y Q1316 2SD09650RA TRANSISTOR RMC0061 PACK SPRING Q1317 B1ABGC000005 TRANSISTOR RXF0061-1 FLYWHEEL F ASS’Y Q2142 B1ABCF000176 TRANSISTOR RXG0040 FF RELAY GEAR ASS’Y...
  • Page 97 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks D2938 B0EAKM000117 DIODE S5950 K0ABLB000003 SW VOLTAGE SELECTOR D2939 B0EAKM000117 DIODE S6101 EVQ21405RJ SW AC IN D2946 B0ADCJ000020 DIODE S6102 EVQ21405RJ...
  • Page 98 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks L5603 G0B9R5K00001 CHOKE COIL JACKS L5604 G0B9R5K00001 CHOKE COIL L6501 G0C100JA0052 INDUCTOR JK2803 K2HA204B0153 JK AUX L6502 G0C100JA0052 INDUCTOR JK5101 K4AZ08B00005...
  • Page 99 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks W634 ERJ8GEY0R00V CHIP JUMPER W1103 ERJ3GEY0R00V CHIP JUMPER W635 ERJ3GEY0R00V CHIP JUMPER W5162 ERJ6GEY0R00V CHIP JUMPER W636 ERJ3GEY0R00V CHIP JUMPER W5505...
  • Page 100 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R957 ERJ2GEJ222X 2.2K 1/32W R2172 D0GB822JA008 8.2K 1/16W R971 ERJ2GEJ102X 1K 1/32W R2173 D0GB472JA041 4.7K 1/16W R972 ERDS2TJ821T 820 1/4W R2181...
  • Page 101 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2429 D0GB822JA007 8.2K 1/16W R2828 D0GB473JA041 47K 1/16W R2431 D0GBR00JA008 0 1/16W R2829 D0GB473JA041 47K 1/16W R2433 D0GB153JA007 15K 1/16W R2830...
  • Page 102 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R3711 D0GB473JA008 47K 1/16W R5502 D0GB562JA007 5.6K 1/16W R3712 D0GB473JA008 47K 1/16W R5503 D0GB562JA007 5.6K 1/16W R3720 D0GBR00JA008 0 1/16W R5504 D0GB562JA007 5.6K 1/16W...
  • Page 103 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R6632 ERD2FCVG470T 47 1/4W C1108 F2A1C100A147 10 16V R6751 D0GB332JA007 3.3K 1/16W C1109 F2A1H3R3A145 A 3.3 R6752 D0GB152JA008 1.5K 1/16W C1110...
  • Page 104 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2263 ECA1HM010BV 1 50V C2706 ECA1HAK010XB 1 50V C2271 F1H1A154A001 0.15 10V C2721 F2A1C101A180 100P 16V C2272 ECJ1VB1C823K 0.082 16V C2722 ECJ1VB1H103K 0.01 50V...
  • Page 105 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C5157 F1H1H103A219 0.01 50V C5426 ERJ3GEY0R00V 0 1/16W C5159 F1H1H103A219 0.01 50V C5427 ECQV1H474JL3 0.47 50V C5171 ECA1JM102E 1000 63V C5428 ECJ1VB1H104K 0.1 50V...
  • Page 106 SA-AK750GCP Ref. No. Part No. Part Name & Description Remarks C6507 F1H1H103A219 0.01 50V C6508 F2A1E2210045 220P 25V C6509 ECJ1VB1H104K 0.1 50V C6510 D0GBR00JA008 0 1/16W C6521 F1H1H103A219 0.01 50V C6551 F1H1H103A219 0.01 50V C6552 F1H1H103A219 0.01 50V C6553 F1H1H103A219 0.01 50V...

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