Panasonic SA-AK240E Service Manual
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Panasonic SA-AK240E 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
Total output power
n FM/AM TUNER, TERMINALS SECTION
Preset station
Frequency Modulation (FM)
Frequency range
Sensitivity
S/N 26dB
Antenna terminals
Amplitude Modulation (AM)
Frequency range
Sensitivity
S/N 20dB (at 999 kHz)
Music Port input jack
Terminal
Sensitivity
Phone jack
Terminal
n CASSETTE DECK SECTION
115 W per channel (3 Ω)
230 W
FM 15 stations
AM 15 stations
87.50 to 108.00 MHz (50 kHz
steps)
4.0 µV (IHF)
2.2 µV
75 Ω (unbalanced)
522 to 1629 kHz (9 kHz step)
560 µV/m
Stereo, 3.5 mm jack
100 mV, 4.7 kΩ
Stereo, 3.5 mm jack
SA-AK240E
SA-AK240EB
SA-AK240EG
Colour
(S)... Silver Type
Track system
Heads
Record/playback
Erasure
Motor
Recording system
Erasing 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)
(2) CD-R/RW (CD-DA, MP3, WMA formatted disc)
(3) MP3/WMA
Bit rate
MP3, WMA
Sampling frequency
MP3/WMA
© 2006 Matsushita Electric Industrial Co. Ltd.. All
rights
reserved.
distribution is a violation of law.
ORDER NO. MD0512482C2
CD Stereo System
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
32 kbps to 320 kbps
32 kHz, 44.1 kHz, 48 kHz
Unauthorized
copying
4.8 cm/s
and

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Summary of Contents for Panasonic SA-AK240E

  • Page 1: Specifications

    ORDER NO. MD0512482C2 CD Stereo System SA-AK240E SA-AK240EB SA-AK240EG Colour (S)... Silver 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 Track system...

  • Page 2: Table Of Contents

    SA-AK240E / SA-AK240EB / SA-AK240EG CD-DA 44.1 kHz Mass 6.9 kg Decoding 16 bit linear Operating temperature range +5 to +35°C Digital filter 8 fs Operating humidity range 5 to 90% RH (no condensation) D/A converter MASH (1 bit DAC)
  • Page 3 SA-AK240E / SA-AK240EB / SA-AK240EG 17.2. (A) CD Servo Circuit 18.6. (F) Deck P.C.B. & (G) Deck Mechanism P.C.B. 17.3. (B) Main (Tuner) Circuit 19 Illustration of ICs, Transistors and Diodes 17.4. (B) Main Circuit 20 Terminal Function of IC's 17.5.

  • Page 4: Safety Precautions

    SA-AK240E / SA-AK240EB / SA-AK240EG 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: Caution For Ac Mains Lead

    SA-AK240E / SA-AK240EB / SA-AK240EG 1.2. Caution for AC Mains Lead 1.3. Before repair and adjustment Disconnect AC power, discharge Power Capacitors C5101, C5104, C5171, C5172, C5920, C5940 and C5950 through a 10Ω, 5W...

  • Page 6: Protection Circuitry

    SA-AK240E / SA-AK240EB / SA-AK240EG resistor to ground. 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. Current consumption at AC 240V, 50 Hz in NO SIGNAL mode (volume min at CD mode) should be ~ 500mA.

  • Page 7: Handling Precautions For Traverse Deck

    SA-AK240E / SA-AK240EB / SA-AK240EG 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: Precaution Of Laser Diode

    SA-AK240E / SA-AK240EB / SA-AK240EG 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 : 780 nm 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 9: Handling The Lead-Free Solder

    SA-AK240E / SA-AK240EB / SA-AK240EG 5 Handling the Lead-free Solder 5.1. About lead free solder (PbF) Distinction of PbF P.C.B.: P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B. Caution: · Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use a high temperature soldering iron.

  • Page 10: New Features

    SA-AK240E / SA-AK240EB / SA-AK240EG 6 New Features 6.1. CRS1 Mechanism Overview 6.1.1. General Feature · This is a five disc changer mechanism for CD/DVD. The outline figure is shown below.
  • Page 11 SA-AK240E / SA-AK240EB / SA-AK240EG · The mechanism has "CHANGE WHILE PLAY" function. It open other trays for disc exchanging while one tray is at PLAY position performing recording or reproducing. · The mechanism can quickly change all trays with "CHANGE ALL" function. All trays can be move to OPEN position with one operation.

  • Page 12: Music Port

    SA-AK240E / SA-AK240EB / SA-AK240EG Note: * represent tray number (from 1 ~ 5) 6.1.4. New CD Mechanism (CRS1) Note: This service manual does not contain the following information for the mention CD Mechanism drive: · Schematic Diagram, Block Diagram and P.C.B. layout of CD Loading P.C.B.

  • Page 13: Accessories

    SA-AK240E / SA-AK240EB / SA-AK240EG 7 Accessories Remote Control FM Antenna Wire AC Cord (For E/EG only) AC Cord (For EB only) AM Loop Antenna Antenna Adaptor (For EB only)

  • Page 14: Operating Instructions Procedures

    SA-AK240E / SA-AK240EB / SA-AK240EG 8 Operating Instructions Procedures...
  • Page 15 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 16: Self Diagnosis And Special Mode Setting

    SA-AK240E / SA-AK240EB / SA-AK240EG 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. Special Mode Table Item FL Display Key Operation Mode Name Description Front Key...
  • Page 17 SA-AK240E / SA-AK240EB / SA-AK240EG Item FL Display Key Operation Mode Name Description Front Key FL Display Test To check In doctor mode: segments display (All 1. Press [DIMMER] button on remote control. segments will light up and LED will blink at 0.5...

  • Page 18: Error Code Table

    SA-AK240E / SA-AK240EB / SA-AK240EG 9.2. Error code Table Self-Diagnosis Function (refer Section 9.1) 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 19 SA-AK240E / SA-AK240EB / SA-AK240EG The error code is automatically display after entering into self-diagnostic mode. Error Code Diagnosis Contents Description of error Automatic FL Display Remarks Mode SW, plunger For deck mechanism unit (For deck 1/2). and capstan motor...
  • Page 20 SA-AK240E / SA-AK240EB / SA-AK240EG Error Code Diagnosis Contents Description of error Automatic FL Display Remarks ITOP UD assembly UD Rack does not For CD changer unit (CRS1). Press [SINGLE CHANGE] on main unit move front direction. This lead to for next error.
  • Page 21 SA-AK240E / SA-AK240EB / SA-AK240EG Error Code Diagnosis Contents Description of error Automatic FL Display Remarks F2NG Fail - safe mode. (For When the tray close For CD changer unit (CRS1). open/close tray operation Press [SINGLE CHANGE] on main unit...

  • Page 22: Assembling And Disassembling

    SA-AK240E / SA-AK240EB / SA-AK240EG 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 23: Disassembly Flow Chart

    SA-AK240E / SA-AK240EB / SA-AK240EG 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 24: Main Parts Location

    SA-AK240E / SA-AK240EB / SA-AK240EG 10.3. Main Parts Location...

  • Page 25: Disassembly Of Top Cabinet

    SA-AK240E / SA-AK240EB / SA-AK240EG 10.4. Disassembly of Top Cabinet Step 1 Remove 3 screws at each side and 5 screws at rear panel. Step 2 Lift up both sides of the top cabinet, push the top cabinet towards the rear to remove the top cabinet.
  • Page 26 SA-AK240E / SA-AK240EB / SA-AK240EG Step 3 Release the claws on both ends. Note: For disassembly & assembly of traverse unit, please refer to section 10.14 of this service manual.Please refer to original Service Manual for the Disassembly and Assembly of the CD Changer Unit (CRS1).

  • Page 27: Disassembly Of Main P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 10.7. Disassembly of Main P.C.B. · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit ·...

  • Page 28: Disassembly Of Power P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 10.9. Disassembly of Power P.C.B. · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit ·...

  • Page 29: Disassembly Of Front Panel Unit

    SA-AK240E / SA-AK240EB / SA-AK240EG 10.10. Disassembly of Front Panel Unit · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit Step 1 Disconnect connectors (CN2803, CN2806, CN2951, CN5950 &...

  • Page 30: Disassembly For Panel P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG Step 4 Remove the front panel unit. each side) of bottom chassis to be aligned to front panel’s slot. Assembly is secured upon hearing clicking sound. 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 10.11.

  • Page 31: Disassembly Of Deck Mechanism Unit

    SA-AK240E / SA-AK240EB / SA-AK240EG 10.12. Disassembly of Deck mechanism unit · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit ·...
  • Page 32 SA-AK240E / SA-AK240EB / SA-AK240EG Step 3: Remove the traverse unit as arrow shown. · Assembly of Traverse Unit Step 1: Press and hold the plunger lever and rotate the gear as arrows shown until it stop. Step 1: Turn over the unit and install the traverse unit.

  • Page 33: Disassembly Of Optical Pickup Unit (Cd Mechanism)

    SA-AK240E / SA-AK240EB / SA-AK240EG Step 2: Push the traverse slide plate as arrow shown to lock the traverse unit. 10.15. Disassembly of optical pickup unit (CD mechanism) · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet ·...
  • Page 34 SA-AK240E / SA-AK240EB / SA-AK240EG Step 8 Remove the catch of the drive rack, and take out the drive rack. Step 4 Remove the traverse deck. Note: As floating springs (4 pieces) come off at the same time, be careful not to lose them.
  • Page 35 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 36: Disassembly Of Deck Mechanism

    SA-AK240E / SA-AK240EB / SA-AK240EG 10.16. Disassembly of Deck Mechanism · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 4) of Item 10.6 - Disassembly of CD Changer Unit ·...
  • Page 37 SA-AK240E / SA-AK240EB / SA-AK240EG Step 6 Remove the flywheel R. Step 7 Release the claw and remove the winding lever and spring. [Installation of the belt] Step 1 The boss and marking should be positioned horizontally. Step 2 Put the winding belt on the pulley temporarily.

  • Page 38: Replacement For Cassette Lid

    SA-AK240E / SA-AK240EB / SA-AK240EG tighten screws. Step 7 Put the capstan belt A temporarily as shown below. Step 10 Install 3 screws. Step 11 Put the capstan belt B as shown below. Step 8 Put the capstan belt B on the motor ass’y pulley.

  • Page 39: Rectification For Tape Jam Problem

    SA-AK240E / SA-AK240EB / SA-AK240EG Step 2 Push up the cassette lid (L/R) in the direction of arrow. (For DECK1 and DECK2). 10.18. Rectification for tape jam problem · Follow the (Step 1) - (Step 2) of Item 10.4 - Disassembly of Top Cabinet...

  • Page 40: Service Fixture And Tools

    SA-AK240E / SA-AK240EB / SA-AK240EG 11 Service Fixture and Tools Service Tools Extension FFC (A) Deck P.C.B. - Main P.C.B. REEX0485 (14 Pins) (B) Panel P.C.B. - Deck Mechanism P.C.B. REEX0484 (10 Pins) 12 Service Positions Note: For description of the disassembly procedures, see the Section 10.

  • Page 41: Checking And Repairing Of Transformer P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 12.2. Checking and Repairing of Transformer P.C.B.

  • Page 42: Checking And Repairing Of Panel, Deck & Deck Mechanism P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 12.3. Checking and Repairing of Panel, Deck & Deck Mechanism P.C.B.

  • Page 43: Checking And Repairing Of Power P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 12.4. Checking and Repairing of Power P.C.B.

  • Page 44: Adjustment Procedures

    SA-AK240E / SA-AK240EB / SA-AK240EG 13 Adjustment Procedures 13.1. Cassette Deck Section 13.1.2. Bias Voltage Check · Measurement Condition 1. Set the unit “AUX” position. − Reverse-mode selector switch: 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and the unit to “REC”...

  • Page 45: Tuner Section

    SA-AK240E / SA-AK240EB / SA-AK240EG 13.2. Tuner Section This section include details on the alignment of AM-IF and AM RF adjustment. 13.2.1. AM-IF Alignment 1. Set up the equipments as shown in Fig. 5. 2. Select [TUNER] mode on selector and set to [AM] mode.

  • Page 46: Adjustment Point

    SA-AK240E / SA-AK240EB / SA-AK240EG Fig. 7 13.2.3. Adjustment Point Below is the locations of alignment points on the Main (Tuner) P.C.B.

  • Page 47: Voltage And Waveform Chart

    SA-AK240E / SA-AK240EB / SA-AK240EG 14 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 48 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 49: Power P.c.b. & Transformer P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 14.2. Power P.C.B. & Transformer P.C.B.

  • Page 50: Waveform Chart

    SA-AK240E / SA-AK240EB / SA-AK240EG 14.3. Waveform Chart...
  • Page 51 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 52: Wiring Connection Diagram

    SA-AK240E / SA-AK240EB / SA-AK240EG 15 Wiring Connection Diagram FM ANT AM ANT H5104/ W5104 JK2601 CN5103 To Fan CN2810 POWER P.C.B MAIN P.C.B SOLDER SIDE CN2801 Z2620 SOLDER SIDE TUNER PACK CN5102 BLACK CN2809 MOTOR CN2808 CN2805 JK5101 CN2806...

  • Page 53: Block Diagram

    SA-AK240E / SA-AK240EB / SA-AK240EG 16 Block Diagram OPTICAL PICKUP SEMICONDUCTOR TOMAINBLOCK LASER Q7601 LASER POWER DRIVE X7201 PHOTO DETECTOR 69 67 68 51 53 52 54 NTEST2 NTEST NSRVMONON /RST TIMING MICRO COMPUTER TXTCK NRST DSL/PLL/VCO GENERATOR INTERFACE [DSLPLL]...
  • Page 54 SA-AK240E / SA-AK240EB / SA-AK240EG IC100 AN734 P.B E AMANT ALC/T FMANT Z2620 CF2601 CF2602 24(23) Q1 (RFAMP) Q2601 (DECK 1) P.B. HEAD 1(2) MIXER IF AMP 22(3) D2602 L2602 L2601 21(4) BUFFER 17(8) FROM POWER (DECK 2) FL6602 TRANSFORMER...
  • Page 55 SA-AK240E / SA-AK240EB / SA-AK240EG IC2803 C1BB00001121 AUDIO SOUND PROCESSOR IC2804 3(4) IN-L2(R2) C0AABB000125 OP-AMP IC1001 Q2142(Q2242) Q2317 (Q AN7348S-E1 42(37) 2(6) P.B EQ/REC AMP/ L-OUT(R-OUT) CONTROL 1(7) MUTIN FILTER SWITCH ALC/TPS AMP 3(5) CONTR Q2411(Q2311) 24(23) (DECK 1) MUTING P.B.
  • Page 56 SA-AK240E / SA-AK240EB / SA-AK240EG IC2804 IC5301 C0AABB000125 C1BA00000407 OP-AMP 2-CH DIGITAL AMP Q2142(Q2242) Q2317 (Q2417) 2(6) CONTROL 1(7) MUTING FILTER FILTER IN1+ SWITCH 3(5) CONTROL Q2411(Q2311) MUTING IN1- CONTROL IN2+ IN2- Q2341 (Q2441) HP_L(R) HEADPHONE MUTING Q5154 PCONT/EFP_/CE PCONT...

  • Page 57: Schematic Diagram

    SA-AK240E / SA-AK240EB / SA-AK240EG 17 Schematic Diagram (All schematic diagrams may be modified at any time with the development of the new technology) 17.1. Notes of Schematic Diagrams Note: S951 : MODE Switch S952 : HALF Switch S971 : MODE Switch...
  • Page 58 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 59: A) Cd Servo Circuit

    SA-AK240E / SA-AK240EB / SA-AK240EG 17.2. (A) CD Servo Circuit SCHEMATIC DIAGRAM - 1 OPTICAL CD SERVO CIRCUIT PICKUP CIRCUIT : +B SIGNAL LINE : CD-DA SIGNAL LINE : CD SIGNAL LINE W7022 W7020 LASER DIODE CP701 R7601 C7232 W7006...
  • Page 60 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 61: B) Main (Tuner) Circuit

    SA-AK240E / SA-AK240EB / SA-AK240EG 17.3. (B) Main (Tuner) Circuit SCHEMATIC DIAGRAM - 2 : +B SIGNAL LINE : FM SIGNAL LINE : AM SIGNAL LINE : FM/AM SIGNAL LINE : FM OSC SIGNAL LINE : AM OSC SIGNAL LINE...
  • Page 62 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 63: B) Main Circuit

    SA-AK240E / SA-AK240EB / SA-AK240EG 17.4. (B) Main Circuit SCHEMATIC DIAGRAM - 3 : +B SIGNAL : FM/AM SIGNAL LINE : TAPE RECORD SIGNAL LINE : CD SIGNAL LINE MAIN CIRCUIT : TAPE PLAYBACK SIGNAL LINE : -B SIGNAL : MAIN SIGNAL LINE...
  • Page 64 SA-AK240E / SA-AK240EB / SA-AK240EG SA-AK240E/EB/EG MAIN CIRCUIT W2511 C2701 0.01 R2701 C2702 16V100 C2705 50V1 R2705 3.3K Q2142 B1ABCF000176 R2702 AGC CONTROL SWITCH C2315 R2315 R2316 16V22 2.2K R2145 R2146 Q2311,Q2411 B1ABGC000005 MUTING SWITCH F_HOP C2321 R2321 W2510 R2329...
  • Page 65 SA-AK240E / SA-AK240EB / SA-AK240EG W2526 R2121 R2221 3.3K 3.3K R2674 R2675 TUNER RCH 4.7K MAIN PLLCE PLLCE_UP CIRCUIT TUNER LCH IC2871 (1B) ON PLL_DA PLL_DA E-EPROM IC (NOT SUPPLIED) SCHEMATIC TUNER DQ/ST R2676 STIDO DIAGRAM-2 PLL CLK PLL_CLK IC2871...
  • Page 66 SA-AK240E / SA-AK240EB / SA-AK240EG W2526 F_HOP T_GND C2940 IC2871 MUTE-D-AMP E-EPROM IC (NOT SUPPLIED) R2940 +15V 820K IC2871 Q2942 B1ACKD000006 EE_CS FAN MOTOR ON/OFF SWITCH TO FAN MOT_12V EE_CLK EE.DAT CN2810 SW5V SW5V R2945 C2945 C2944 16V47 100P -VCC...

  • Page 67: C) Panel Circuit

    SA-AK240E / SA-AK240EB / SA-AK240EG 17.5. (C) Panel Circuit SCHEMATIC DIAGRAM - 4 TRANSFORMER CIRCUIT (CN5951) PANEL CIRCUIT ON SCHEMATIC DIAGRAM-5 : +B SIGNAL LINE : -B SIGNAL LINE : MAIN SIGNAL LINE H6555/W6555 1 2 3 4 5 6...
  • Page 68 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 69: D) Transformer Circuit

    SA-AK240E / SA-AK240EB / SA-AK240EG 17.6. (D) Transformer Circuit SCHEMATIC DIAGRAM - 5 TRANSFORMER CIRCUIT : +B SIGNAL LINE : -B SIGNAL LINE FP5940 D5950-D5953 B0EAMM000038 VCC+ D5950 D5952 VCC- C5960 POWER FP5920 CIRCUIT C5920 C5940 AC GND D5953 D5951...
  • Page 70 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 71: H) Power Circuit

    SA-AK240E / SA-AK240EB / SA-AK240EG 17.7. (H) Power Circuit SCHEMATIC DIAGRAM - 6 POWER CIRCUIT : -B SIGNAL LINE : +B SIGNAL LINE : MAIN SIGNAL LINE SA-AK240E/EB/EG POWER CIRCUIT IC5301 IC5301 C1BA00000407 2-CH DIGITAL AMP Q5154 TDA8920BJ 2SB0709AHL R5154...
  • Page 72 SA-AK240E / SA-AK240EB / SA-AK240EG C5305 C5302 330P 330P R5308 R5307 C5339 C5340 C5301 C5303 0.47 0.47 0.47 0.47 L5301 G0C220Z00002 R5301 5.6K C5333 C5331 C5330 C5332 220P 220P 220P 220P R5303 R5304 R5302 R5306 R5305 W5507 C5327 5.6K 5.6K 5.6K...

  • Page 73: F) Deck Circuit & (G) Deck Mechanism Circuit

    SA-AK240E / SA-AK240EB / SA-AK240EG 17.8. (F) Deck Circuit & (G) Deck Mechanism Circuit SCHEMATIC DIAGRAM - 7 MAIN CIRCUIT (CN2803) ON : +B SIGNAL : PLAYBACK SIGNAL SCHEMATIC DIAGRAM-3 DECK CIRCUIT : RECORD SIGNAL LINE CN1001 C1038 R1055 C1057...
  • Page 74 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 75: Printed Circuit Board

    SA-AK240E / SA-AK240EB / SA-AK240EG 18 Printed Circuit Board Note: Circuit board diagrams may be modified at any time with the development of new technology.

  • Page 76: A) Cd Servo P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 18.1. (A) CD Servo P.C.B. CD SERVO P.C.B (REPX0494A) TP51(RF) C7227 W7014 TP19 C7225 C7204 TP14 W7015 C7226 TP50 C7228 TP18 TP17 C7216 C7230 C7231 TP24 TP13 W7019 R7221 CN7002 C7233 W7006 TP16 C7232 W7007...

  • Page 77: B) Main

    SA-AK240E / SA-AK240EB / SA-AK240EG 18.2. (B) Main P.C.B. MAIN P.C.B (REPX0516N) Q2942 CN2810 C2964 C2941 C2948 W2573 (TO FAN) W2304 W2567 W2568 R2925 C2971 W2291 L2962 L2961 Q2907 R2964 W2565 Q2906 CN2805 R2942 W2290 R2963 R2943 W2293 Q2948 Q2949...

  • Page 78: C) Panel P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 18.3. (C) Panel P.C.B. PANEL P.C.B (REPX0517N) S6103 D6458 OPEN/ R6102 CLOSE S6102 S6101 POWER SINGLE DISC CHANGE S6308 MULTI DISC S6104 CHANGE FL6602 W6007 W6402 CN6601 W6055 R6458 S6105 C6635 C6632 R6604 W6004 C6604...

  • Page 79: D) Transformer

    SA-AK240E / SA-AK240EB / SA-AK240EG 18.4. (D) Transformer P.C.B. TRANSFORMER P.C.B (REPX0518K) CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE. PLEASE DO NOT TOUCH THIS P.C.B T5951 250V 1.6A (SUB TRANSFORMER) K5901...AK240 L5950 Q5950 C5953 J5955 R5952 Z5950 C5951 D5986...

  • Page 80: E) Power

    SA-AK240E / SA-AK240EB / SA-AK240EG 18.5. (E) Power P.C.B. POWER P.C.B (REPX0533B) C5102 W5205 W5144 W5208 W5206 W5207 C5114 D5121 H5104/W5104 Q5201 K5511 Q5202 C5115 Q5108 K5512 W5119 W5200 W5197 W5121 D5101 W5122 W5142 C5332 C5330 W5143 C5106 C5152 C5107...

  • Page 81: F) Deck P.c.b. & (G) Deck Mechanism P.c.b

    SA-AK240E / SA-AK240EB / SA-AK240EG 18.6. (F) Deck P.C.B. & (G) Deck Mechanism P.C.B. DECK P.C.B DECK MECHANISM P.C.B. (REPX0331G) (REPX0321A) R1024 IC1004 C1006 C1009 R1027 CS1002 TO R/P HEAD TP10 Q1003 TP4 x J1002 L1002 TP3 x TP11 R1004...
  • Page 82 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 83: Illustration Of Ics, Transistors And Diodes

    SA-AK240E / SA-AK240EB / SA-AK240EG 19 Illustration of ICs, Transistors and Diodes C1BA00000407 C1AA00000612 AN7348S-E1 (24P) C1BB00001121 (100P) C0JBAB000011 (14P) C2CBYY000053 (100P) C1BB00000962 (24P) C0HBB0000057 (44P) C1BB00000987 (16P) MN6627954MA (100P) C1CB00001937 (20P) B1GCCFJJ0016 2SB0621AHA CNB13030R2AU (4P) B1AAKD000014 C0AABB000125 BA5948FPE2 B1GACFJJ0018...

  • Page 84: Terminal Function Of Ic's

    SA-AK240E / SA-AK240EB / SA-AK240EG 20 Terminal Function of IC's 20.1. 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...

  • Page 85: Ic7002 (Ba5948Fpe2) Ic 4Ch Drive

    SA-AK240E / SA-AK240EB / SA-AK240EG 20.2. 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...
  • Page 86 SA-AK240E / SA-AK240EB / SA-AK240EG Pin No. Mark Function OPEN_SW Open_Sw for CRS1 CHG_CW CRS1 motor CW CHG_CCW CRS1 motor CCW ST_SW Stock_Sw for CRS1 PLAY_SW Play_Sw for CRS1 CHG_PLR Plunger for CRS1 BOTTOM_SW Bottom_SW for CRS1 UP_SENSOR UD-Sensor for CRS1...

  • Page 87: Exploded Views

    SA-AK240E / SA-AK240EB / SA-AK240EG 21 Exploded Views...
  • Page 88 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 89: Cabinet Parts Location

    SA-AK240E / SA-AK240EB / SA-AK240EG 21.1. Cabinet Parts Location...
  • Page 90 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 91: Deck Mechanism Parts Location (Raa4502-S)

    SA-AK240E / SA-AK240EB / SA-AK240EG 21.2. Deck Mechanism Parts Location (RAA4502-S)
  • Page 92 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 93: Packaging

    SA-AK240E / SA-AK240EB / SA-AK240EG 21.3. Packaging...
  • Page 94 SA-AK240E / SA-AK240EB / SA-AK240EG...

  • Page 95: Replacement Parts List

    SA-AK240E / SA-AK240EB / SA-AK240EG 22 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.
  • Page 96 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks RMQ0519 REEL HUB Q1007 B1ABCF000176 TRANSISTOR RMS0398-1 MOVING CORE Q1017 B1AARC000003 TRANSISTOR RSJ0003 PLUNGER ASS’Y Q2142 B1ABCF000176...
  • Page 97 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks D2946 B0ADCJ000020 DIODE S6308 EVQ21405RJ SW MULTI DISC CHANGE D2950 B0ACCK000005 DIODE S7201 RSH1A048-A SW RESET D5101...
  • Page 98 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks FL6602 A2BD00000141 R1004 D0GB152JA007 1.5K 1/16W R1005 D0GB472JA041 4.7K 1/16W FUSE R1007 ERD25FVJ4R7T 4.7 1/4W R1009 D0GB183JA007...
  • Page 99 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2246 ERJ3GEYJ102V 1K 1/16W R2601 ERJ3GEY0R00V 0 1/16W R2247 D0GB104JA007 100K 1/16W R2602 D0GB472JA041 4.7K 1/16W R2248 ERJ3GEYJ682V 6.8K 1/16W...
  • Page 100 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R2833 D0GB104JA007 100K 1/16W R2954 ERJ3GEYJ103V 10K 1/16W R2841 ERJ3GEYJ103V 10K 1/16W R2955 D0GB274JA007 270K 1/16W R2842...
  • Page 101 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R5957 D0AE103JA048 10K 1/4W R7601 ERJ3GEYJ4R7V 4.7 1/16W R5958 D0AE103JA048 10K 1/4W R7650 ERJ3GEYJ5R6V 5.6 1/16W R5960 D0AE472JA048 4.7K 1/4W...
  • Page 102 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks W6505 ERJ3GEY0R00V CHIP JUMPER C1056 ECA1CAK100XB 10 16V W7001 ERJ6GEY0R00V CHIP JUMPER C1057 F1H1H102A219 1000P 50V W7002...
  • Page 103 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C2431 ECJ1VB1C105K 1 16V C2852 ECA1CAK101XB 100 16V C2433 ECJ1VB1A105K 1 10V C2853 F1H1C104A041 0.1 16V C2436 ECJ1VB1A224K 0.22 10V...
  • Page 104 SA-AK240E / SA-AK240EB / SA-AK240EG Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C5310 F1K2A1040007 0.1 100V C7216 ECJ1VB1H681K 680P 50V C5311 F1H1H221A748 220P 50V C7217 ECJ1VB1C104K 0.1 16V C5312 ECJ1VB1H104K 0.1 50V...

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