Panasonic SA-AK220E Service Manual
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Panasonic SA-AK220E Service Manual

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Specifications
n AMPLIFIER SECTION
RMS Power output
THD 10%, both channels driven
1 kHz
Total RMS power
Input sensitivity
AUX
Input Impedance
AUX
n FM TUNER SECTION
Frequency range
Sensitivity
S/N 26 dB
Antenna terminal(s)
n AM TUNER SECTION
Frequency range
Sensitivity
S/N 20 dB (at 999 kHz)
n CASSETTE DECK SECTION
Track system
Heads
Record/playback
Erasure
Motor
Recording system
Erasing system
80 W per channnel (6Ω)
160 W per channel
250 mV
13.3 kΩ
87.5 - 108.0 MHz (50 kHz steps)
1.8µV (IHF)
1.5 µV
75 Ω (unbalanced)
522 - 1629 kHz (9 kHz steps)
560 µV/m
4 track, 2 channel
Solid permalloy head
Double gap ferrite head
DC servo motor
AC bias 100 kHz
AC erase 100 kHz
SA-AK220E
SA-AK220EB
Colour
(S)... Silver Type
Tape speed
Overall frequency response (+3 dB, -6 dB at DECK OUT)
NORMAL (TYPE I)
S/N
Wow and flutter
Fast forward and rewind time
n CD SECTION
Sampling frequency
Decoding
Pickup
Beam source/wavelength
Number of channels
Frequency response
Wow and flutter
Digital filter
D/A converter
MP3
Bit rate
Sampling frequency
n GENERAL
Power Supply (For E only)
Power Supply (For EB only)
Power consumption
Power Consumption in standby
mode
Dimensions (W x H x D)
© 2004 Panasonic AVC Networks Singapore Pte.
Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
ORDER NO. MD0403070C2
CD Stereo System
35 Hz - 14 kHz
50 dB (A weighted)
0.18 % (WRMS)
Approx. 120 seconds with
C-60 cassette tape
16 bit linear
Semiconductor laser/780 nm
20 Hz - 20 kHz (+1, -2 dB)
Below measurable limit
MASH (1 bit DAC)
32 kbps - 320 kbps
32 kHz, 44.1 kHz, 48 kHz
AC 230V, 50Hz
AC 230 - 240 V, 50Hz
250 x 330 x 363 mm
4.8 cm/s
44.1 kHz
Stereo
8 fs
174 W
0.5 W

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Summary of Contents for Panasonic SA-AK220E

  • Page 1 AC bias 100 kHz Dimensions (W x H x D) 250 x 330 x 363 mm Erasing system AC erase 100 kHz © 2004 Panasonic AVC Networks Singapore Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    SA-AK220E / SA-AK220EB Mass 7.3 kg Notes: n SYSTEM SC-AK220 (E) Music center: SA-AK220 (E) 1. Specifications are subject to change without notice. Mass and dimensions are approximate. Speaker: SB-AK220 (GC) 2. Total harmonic distortion is measured by the digital spectrum...
  • Page 3 SA-AK220E / SA-AK220EB 20 Illustration of IC 痴, Transistors and Diodes 22 Troubleshooting Guide 21 Terminal Function of IC 痴 23 Parts Location and Replacement Parts List 21.1. IC701 (AN22004A-NF) Servo Amplifier 23.1. Deck Mechanism (RAA4502-S) 21.2. IC702 (MN6627934CH) Servo Processor/ Digital Signal 23.2.

  • Page 4: Caution For Ac Mains Lead

    SA-AK220E / SA-AK220EB 1 Caution for AC Mains Lead...

  • Page 5: Before Repair And Adjustment

    SA-AK220E / SA-AK220EB 2 Before Repair and Adjustment Disconnect AC power, discharge Power Supply Capacitors C520 and C540 through a 10Ω, 5W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.

  • Page 6: Handling The Lead-Free Solder

    SA-AK220E / SA-AK220EB 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 7: Handling Precautions For Traverse Deck

    SA-AK220E / SA-AK220EB 6 Handling Precautions For Traverse Deck The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of clothes or human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).

  • Page 8: Precaution Of Laser Diode

    SA-AK220E / SA-AK220EB 7 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: Accessories

    SA-AK220E / SA-AK220EB 8 Accessories Remote Control Transmitter FM Indoor Antenna AC Power Supply Cord (For E only) AC Power Supply Cord (For EB only) AM Loop Antenna Antenna Plug Adaptor (For EB only)

  • Page 10: Operation Procedures

    SA-AK220E / SA-AK220EB 9 Operation Procedures...

  • Page 11: Disassembly And Assembly Of Main Component

    SA-AK220E / SA-AK220EB 10 Disassembly and Assembly of Main Component 10.1. 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 12: Disassembly Of Top Cabinet And Rear Panel

    SA-AK220E / SA-AK220EB 10.2. Disassembly of Top Cabinet and Rear Panel Step 1 Remove 3 screws on each side and 5 screws at rear panel. Step 2 Lift up both sides of top cabinet, push the cabinet ass’y toward the rear and remove it.
  • Page 13 SA-AK220E / SA-AK220EB Step 4 Release the 2 claws, and then remove the CD Lid. [Open the disc tray manually (Using service tools)] Step 5 Press the OPEN/CLOSE button, the disc tray will close. Step 1 Insert the gear tool into the hole on the underside of CD chassis and then rotate in the direction of arrow.

  • Page 14: Disassembly Of Cd Mechanism Unit

    SA-AK220E / SA-AK220EB Step 3 Repeat Step 2 but rotate the gear tools in anti-clockwise direction. Step 2 Release the 2 claws, and then remove the CD lid cover. Step 4 The disc tray will be close. 10.3. Disassembly of CD Mechanism Unit ·...

  • Page 15: Disassembly Main P.c.b., Transformer P.c.b. & Power

    SA-AK220E / SA-AK220EB Step 5 Lay the CD mechanism unit as shown. · Note: For disassembly of CD mechanism unit, please refer to Section 10.7 of this manual. 10.4. Disassembly Main P.C.B., Transformer P.C.B. & Power P.C.B. 10.4.1. Disassembly for the Main P.C.B.

  • Page 16: Disassembly Of Panel P.c.b. & Tact Switch P.c.b

    SA-AK220E / SA-AK220EB Step 3 Unsolder the terminals of Power Amp IC, transistor and replace the components. NOTE: Insulate Power P.C.B. with insulation material to avoid short circuit. · Replacement of Power Amplifier IC & Voltage Regulator Step 1 Remove 2 screws (For Power Amp IC) and 1 screw (For Voltage Regulator) .

  • Page 17: Disassembly Of Deck Mechanism Unit & Deck P.c.b

    SA-AK220E / SA-AK220EB Step 3 Remove the 8 screws. Step 4 Disconnect FFC board (CN302). · Disassambly of Tact Switch P.C.B. Step 5 Disconnect connector CN900. Step 2 Remove 2 screws, release 2 claws, and then draw the front panel ass’y forward.

  • Page 18: Cd Mechanism Main Component Replacement Procedures

    SA-AK220E / SA-AK220EB · For replacement of Deck P.C.B. Step 4 Push the lever upward, and then open the cassette lid ass’y (For DECK1 and DECK2). Step 6 Unsolder the motor terminals. Step 5 Tilt the cassette mechanism unit in the direction of Step 7 Remove 3 screws.
  • Page 19 SA-AK220E / SA-AK220EB Step 6 Lift up the traverse deck ass’y. Step 7 Remove the traverse deck ass’y from the timing lever. Caution: When removing or inserting the traverse deck avoid touching the OPU lens and pressing onto the turntable.
  • Page 20 SA-AK220E / SA-AK220EB Note: Step 1 Install the traverse deck ass’y to the timing lever. Be careful not to lose the 3 floating spring because those will Step 2 Align the boss of traverse deck ass’y with the slot of also be removed on removal of the traverse deck ass’y.
  • Page 21 SA-AK220E / SA-AK220EB Step 4 With lifting the claw in the direction of (1), draw the CD Detect P.C.B. in the direction of arrow (2). Step 5 Remove the mechanism cover. Step 5 With pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2).
  • Page 22 SA-AK220E / SA-AK220EB Step 2 Holding the drive rack not to move, install the disc tray. Step 8 Release the both claws, and then draw the disc tray. Step 3 Align the drive rack with the drive gear. Step 9 With forcing the left guide bar manually because the left NOTE: guide bar interfers with claw, draw the disc tray.
  • Page 23 SA-AK220E / SA-AK220EB 10.7.3. Disassembly and reassembly for mechanism base drive unit Step 1 Remove 3 screws. Step 2 Release the claw, and then remove the gear holder. Step 3 Remove the belt and change gear spring. Step 6 Install the tray lock spring to hook temporary.
  • Page 24 SA-AK220E / SA-AK220EB Step 11 Lift up the left end of spindle base unit in the direction of arrow (1), and then remove the unit in the direction of arrow (2). Step 9 Pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2).
  • Page 25 SA-AK220E / SA-AK220EB Step 3 Rotate the disc lever in the direction of arrow (1), draw the disc lever. Step 13 Remove the traverse relay gear, traverse cam gear and drive gear. [Dissassembly/reassembly for the spindle base unit] Step 1 Draw the 5 disc spacers.
  • Page 26 SA-AK220E / SA-AK220EB NOTE: Hold the loading stopper ass’y manually bacause it is flipped by spring. Step 8 Release the 2 claws, and then remove the relay gear A. Step 9 Release the 2 claws, and then remove the spindle shaft.
  • Page 27 SA-AK220E / SA-AK220EB spread the hold bars of loading stopper and remove the UP/DOWN base. [Installation for loading stopper ass’y] Step 1 Align the claw of loading stoppers ass’y with the slot of spindle base. (Caution should be exercised when alignment of claw due to the size of claws.)
  • Page 28 SA-AK220E / SA-AK220EB Step 1 Install the traverse cam gear. Step 2 Rotate the traverse cam gear to the direction of arrow. Step 4 Install the slide plate 2 to the mechanism base, and Step 3 Install the drive gear and traverse relay gear.
  • Page 29 SA-AK220E / SA-AK220EB Step 7 Move the slide plate 1 to forward fully. Step 8 Install the rear lock. (The claw should be latched.) Step 9 Install the Spindle Position P.C.B.. (The claw should be latched.) Step 10 Install the tray lock. (The claw should be latched.) Step 11 Remove the tray lock spring from hook,and then latch to the tray lock.
  • Page 30 SA-AK220E / SA-AK220EB Step 4 Unsolder the plunger terminals (2 points). Step 14 Install the tray base, traverse ass’y, mechanism cover Step 5 Unsolder the motor terminals (2 points). and upper plate. [Operation check after servicing] Check the proper operation of following items with gear and hexagonal screwdriver.

  • Page 31: Replacement For The Pinch Roller Ass 馳 And Head Block

    SA-AK220E / SA-AK220EB Step 1 Release the 2 claws, and then remove the pinch roller 10.8. Replacement for the pinch (R), (F). roller ass’y and head block Step 2 Release ther 2 claws, and then remove the head connector. · Follow the (Step 1) - (Step 2) of Item 10.2 - Disassembly of Top Cabinet and Rear Panel ·...
  • Page 32 SA-AK220E / SA-AK220EB Step 6 Release the claw of tape side, and then remove the winding lever and spring. Step 7 Remove the flywheel F. [Installation of the belt] Step 1 The boss and marking should be positioned horizontally. Step 4 Remove 3 screws.
  • Page 33 SA-AK220E / SA-AK220EB Step 7 Put the capstan belt A temporarily as shown below. Step 10 Remove 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 34: Replacement For The Cassette Lid Ass 馳

    SA-AK220E / SA-AK220EB 10.10. Replacement for the cassette 10.11. Counter-measure for tape lid ass’y trouble · Follow the (Step 1) - (Step 2) of Item 10.2 - Disassembly of · Follow the (Step 1) - (Step 2) of Item 10.2 - Disassembly of...

  • Page 35: Service Position

    SA-AK220E / SA-AK220EB 11 Service Position 11.1. Checking Procedure Note: For the disassembling procedure, see Section 10. 11.2. Checking the Main P.C.B., Power P.C.B. and Transformer P.C.B. 1. Remove Top Cabinet and Rear Panel. 2. Remove CD Lid. 3. Remove CD Mechanism Unit.

  • Page 36: Checking The Panel, Tact Switch, Deck & Deck Mechanism P.c.b

    SA-AK220E / SA-AK220EB 11.3. Checking the Panel, Tact Switch, Deck & Deck Mechanism P.C.B. 1. Remove Top Cabinet and Rear Panel. 2. Remove CD Lid. 3. Remove CD Mechanism Unit. 4. Remove volume knob at front panel. 5. Remove Panel P.C.B. & Tact Switch P.C.B.

  • Page 37: Description Of Error Code

    SA-AK220E / SA-AK220EB 12 Description of Error Code 12.1. Abnormality detection for Deck Mechanism block Abnormal Items Error Display Method of Detection MODE SW abnormal Normal operation during mecha transition, MODE SW abnormal is memorized. The content of abnormality can be confirmed in the abnormal detection mode explained in the later section.

  • Page 38: Self-Diagnostic Function

    SA-AK220E / SA-AK220EB 13 Self-Diagnostic Function 13.1. Self-diagnostic display This unit is equipped with a self-diagnostic display function which, if a problem occurs, will display an error code corresponding to the problem. Use this function when performing maintenance on the unit.

  • Page 39: Cd Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15)

    SA-AK220E / SA-AK220EB 13.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15) 1. Press “CD”. 2. Press “OPEN/CLOSE (1)” and place a CD. 3. Press “OPEN/CLOSE (1)” to close the tray. 4. Press “OPEN/CLOSE (5)” and wait until the tray is open.

  • Page 40: Cd Test Mode Function

    SA-AK220E / SA-AK220EB 14 CD Test Mode Function This CD test mode is provided to check CD unit without connecting to changer loading mechanism. This mode shall operate CD PLAY with CD unit being connected only and CD Automatic Alignment result is shown on FL display.

  • Page 41: Measurements And Adjustments

    SA-AK220E / SA-AK220EB 15 Measurements and Adjustments 15.1. Cassette Deck Section standard value. Bias voltage for Deck 2 14±4mV (Normal) · Measurement Condition Erase voltage for Deck 2 80mV (Normal) − − − − Make sure head, capstan and press roller are clean.

  • Page 42: Alignment Points

    SA-AK220E / SA-AK220EB 9. Set AM-SG to 520kHz. 10. Receive 520kHz in the unit. 11. Adjust Z101 (OSC) so that the EVM-DC value is with 1.1±0.5V. Fig.6 15.2.2. AM RF Adjustment 1. Connect the instrument as shown in Fig. 7.

  • Page 43: Block Diagram

    SA-AK220E / SA-AK220EB 16 Block Diagram IC701 OPTICAL PICKUP AN22004A-NF SERVO AMP SEMICONDUCTOR LASER OFTR OFTR BDO/OFTR OFTCONT Q701 RFEQ LASER POWER DRIVE 3TENV (ENV) 3TOUT /RFDET /RFDET NRFDET RFAMP BandGap FEOUT PHOTO DETECTOR TEOUT IC703 AN8739SBTE2 FOCUS COIL/TRACKING COIL/...
  • Page 44 SA-AK220E / SA-AK220EB TO MAIN BLOCK IC702 MN6627934CH SERVO PROCESSOR DIGITAL SIGNAL PROCESSOR/ DIGITAL FILTER/ D/A CONVERTER BLKCK 8~12, A0~10 9~19 15~19,21 A0~10 CTRL SUBCODE INTERFACE 2,3, D0~3 2,3,6,7 24,25 D0~3 /CAS DRAM INTERFACE IC704 C3ABMB000027 16M DRAM RFSW IREF...
  • Page 45 SA-AK220E / SA-AK220EB AM ANT FM ANT Z101 Z120 CF201 CF202 Q101, Q102 COIL COIL MIXER IF AMP RF AMP BUFFER Q110 (FM) SWITCH DECODER RM AMP BUFFER PHASE PILOT CANCEL STEREO LEVEL S-CURVE SWITCH AM/FM COMP BUFFER TUNING DRIVE...
  • Page 46 SA-AK220E / SA-AK220EB FROM POWER FL DISPLAY TRANSFORMER FL600 4,5,7,8,10,11,13,14,16,17,19,20, 3,6,9,12,15,18,21,24,27, 22,23,25,26,28,31,33,35,37,40 29,30,32,34,36,38,39 21~24,27~33 3~12,15~20 IC602 C0HBB0000040 FL DRIVER IC603 C0JBAE000192 C0GAM0000005 XOR GATE MOTOR DRIVE OUT1 OUT2 RDDA IC303 C1BB00000715 DET_OUT RDCL POWER SUPPLY X302 CONTROL PLLDA Q303 STAT...
  • Page 47 SA-AK220E / SA-AK220EB IC1001 AN7348S-E1 P.B EQ/REC AMP/ ALC/TPS AMP (DECK 1) P.B. HEAD LCH 24(23) Q1014(Q1015) 1(2) 20(5) BUFFER 22(3) 21(4) (DECK 2) R/P HEAD LCH 17(8) 18(7) LOGIC L/H Q1012 Q1020 (Q1013) (Q1021) NOR/CrO & MUTING MUTING HI/LO LOGIC...
  • Page 48 SA-AK220E / SA-AK220EB IC301 4(39) IN B1(2) C0AABB000117 HEADPHONE AMP 1(7) 3(5) 19(24) OUT1(2) Q401(Q201) 5(38) IN C1(2) SWITCH Q402 9(34) Q407 A_VOLIN1(2) (Q202) (Q207) MUTING MUTING IC300 SWITCH 8(35) SWITCH REC1(2) C1BB00000747 AUDIO SOUND PROCESSOR 6(37) IN D1(2) JK300...
  • Page 49 SA-AK220E / SA-AK220EB 4(1) 10(14) -IN L(R) OUT L(R) JK952 FULL RANGE IC501 +VCC RSN35H2A-P POWER HIC 11(13) +IN L(R) -VCC AC DET MUTE C LATCH IN GND FILTER -VCCM FILTER FILTER Q502,Q505 Q512,Q513 VOLTAGE SUPPLY/ DC_DET DC DETECT CURRENT CONTROL...

  • Page 50: Schematic Diagram

    SA-AK220E / SA-AK220EB 17 Schematic Diagram · Ground the soldering iron. (All schematic diagrams may be modified at any time with the development of the new technology) · Do not touch the pins of IC, LSI or VLSI with fingers directly.

  • Page 51: A) Cd Servo Circuit

    SA-AK220E / SA-AK220EB 17.1. (A) CD Servo Circuit SCHEMATIC DIAGRAM - 1 : +B SIGNAL LINE : CD-DA SIGNAL LINE OPTICAL PICKUP CIRCUIT CD SERVO CIRCUIT R701 C770 Q701 C701 B1ADCF000001 6.3V33 Q701 LASER POWER DRIVE C703 6.3V100 C704 RF VOLT...
  • Page 52 SA-AK220E / SA-AK220EB SCHEMATIC DIAGRAM - 2 : +B SIGNAL LINE : CD SIGNAL LINE : CD-DA SIGNAL LINE CD SERVO CIRCUIT R721 R717 C727 C725 50V1 1000P C726 R718 1000P C728 50V1 C731 C730 6.3V220 LCH OUT C757 6.3V100 A.GND...

  • Page 53: B) Tuner/Main Circuit

    SA-AK220E / SA-AK220EB 17.2. (B) Tuner/Main Circuit SCHEMATIC DIAGRAM - 3 : +B SIGNAL LINE : FM SIGNAL LINE : AM SIGNAL LINE : FM/AM SIGNAL LINE : FM OSC SIGNAL LINE : AM OSC SIGNAL LINE TUNER/MAIN CIRCUIT Q101, Q102...

  • Page 54: B) Main Circuit

    SA-AK220E / SA-AK220EB 17.3. (B) Main Circuit SCHEMATIC DIAGRAM - 4 : PLAYBACK SIGNAL LINE : AUX SIGNAL LINE : +B SIGNAL LINE PANEL CIRCUIT (CP601) ON : RECORD SIGNAL LINE : MAIN SIGNAL LINE SCHEMATIC DIAGRAM-10 MAIN CIRCUIT CN303...
  • Page 55 SA-AK220E / SA-AK220EB SCHEMATIC DIAGRAM - 5 : CD SIGNAL LINE : MAIN SIGNAL LINE : +B SIGNAL LINE PANEL CIRCUIT : -B SIGNAL LINE (CP602) ON SCHEMATIC DIAGRAM-10 MAIN CIRCUIT CN302 24 25 26 27 28 29 30 R820...
  • Page 56 SA-AK220E / SA-AK220EB SCHEMATIC DIAGRAM - 6 : +B SIGNAL LINE MAIN CIRCUIT Q312 Q316 B1GBCFJJ0039 B1ACCF000063 PCONT SWITCH SWITCH Q312 C352 100P R392 C351 100P R338 R805 C353 4.7K 100P Q317 C350 R367 C354 100P 100P Q316 R816 R383...
  • Page 57 SA-AK220E / SA-AK220EB SCHEMATIC DIAGRAM - 7 : +B SIGNAL LINE MAIN CIRCUIT R358 R353 R355 8.2K R359 4.7K C339 R352 R360 R356 0.01 4.7K Q303 R314 B1ABCF000131 4.7K SWITCH R313 Q302 R320 4.7K C338 R318 R351 0.01 3.3K Q302...
  • Page 58 SA-AK220E / SA-AK220EB SCHEMATIC DIAGRAM - 8 : +B SIGNAL LINE : AUX SIGNAL LINE : MAIN SIGNAL LINE : -B SIGNAL LINE : CD SIGNAL LINE : PLAYBACK SIGNAL LINE : RECORD SIGNAL LINE : FM/AM SIGNAL LINE MAIN CIRCUIT...

  • Page 59: C) Panel Circuit & (D) Tact Switch Circuit

    SA-AK220E / SA-AK220EB 17.4. (C) Panel Circuit & (D) Tact Switch Circuit SCHEMATIC DIAGRAM - 9 : +B SIGNAL LINE : MAIN SIGNAL LINE : -B SIGNAL LINE PANEL CIRCUIT TACT SWITCH CIRCUIT SYS6V R600 S910 4.7K DISPLAY R909 D600...
  • Page 60 SA-AK220E / SA-AK220EB SCHEMATIC DIAGRAM - 10 : +B SIGNAL LINE : -B SIGNAL LINE : MAIN SIGNAL LINE PANEL CIRCUIT C641 R693 SEG 16 35V22 GRID11 SEG15 D613 R692 B0BA7R200003 GRID10 C640 SEG 14 50V3.3 GRID9 L601 SEG13 G0C100JA0044...

  • Page 61: E) Transformer Circuit, (F) Cd Detect Circuit, (G) Spindle Position Circuit & (H) Cd Loading Circuit

    SA-AK220E / SA-AK220EB 17.5. (E) Transformer Circuit, (F) CD Detect Circuit, (G) Spindle Position Circuit & (H) CD Loading Circuit SCHEMATIC DIAGRAM - 11 : +B SIGNAL LINE : -B SIGNAL LINE TRANSFORMER CIRCUIT D950~D953 B0EAMM000038 VCC+ D952 D950 VCC-...

  • Page 62: I) Power Circuit

    SA-AK220E / SA-AK220EB 17.6. (I) Power Circuit SCHEMATIC DIAGRAM - 12 : -B SIGNAL LINE : MAIN SIGNAL LINE : +B SIGNAL LINE POWER CIRCUIT IC501 IC501 RSN35H2A-P E501 C501 0.01 C448 C249 C240 R450 0.01 4700P 330K 470P C450...

  • Page 63: J) Deck Circuit & (K) Mechanism Circuit

    SA-AK220E / SA-AK220EB 17.7. (J) Deck Circuit & (K) Mechanism Circuit SCHEMATIC DIAGRAM -13 : +B SIGNAL LINE : PLAYBACK SIGNAL LINE : RECORD SIGNAL LINE DECK CIRCUIT R1038 R1039 R1055 C1038 4.7K 2.2K 220P C1044 10V33 C1057 C1034 R1015...
  • Page 64 SA-AK220E / SA-AK220EB SCHEMATIC DIAGRAM - 14 : PLAYBACK SIGNAL LINE : +B SIGNAL LINE : RECORD SIGNAL LINE MAIN CIRCUIT (CN304) ON SCHEMATIC DIAGRAM-4 DECK CIRCUIT CN1001 Q1017 B1AARC000002 50V3.3 C1054 MOTOR SWITCH C1064 50V3.3 R1091 R1095 100K 2.2K...

  • Page 65: Printed Circuit Board

    SA-AK220E / SA-AK220EB 18 Printed Circuit Board Note: Circuit board diagrams may be modified at any time with the development of new technology. 18.1. (A) CD Servo P.C.B. CD SERVO P.C.B (REPX0405A) TP16 TP30 C770 TP24 R743 R712 TP22 C716...
  • Page 66 SA-AK220E / SA-AK220EB CD SERVO P.C.B (REPX0405A) R761 R762 R763 IC704 TP14 R760 C752 R715 C715 (SIDE B)

  • Page 67: B) Main

    SA-AK220E / SA-AK220EB 18.2. (B) Main P.C.B. MAIN P.C.B (REPX0422U) FM ANT AM ANT JK300 W480 L305 C443 C410 C442 JK101 W131 W130 R456 R401 R112 C107 R256 Z120 R448 R455 W100 R433 C421 R423 R429 C440 R432 D401 Z101...
  • Page 68 SA-AK220E / SA-AK220EB AM ANT W210 W244 W127 W126 L302 R342 C394 C365 C379 Q106 C302 W264 W121 W255 W120 IC303 W265 C109 W132 L301 W487 W116 R131 R144 W314 R118 R341 C322 C358 C367 Q308 R326 C321 R327 C115...

  • Page 69: C) Panel

    SA-AK220E / SA-AK220EB 18.3. (C) Panel P.C.B. PANEL P.C.B (REPX0426B) S601 OPEN/ CLOSE R601 R602 S602 SENSOR S603 FL600 W678 S606 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43...
  • Page 70 SA-AK220E / SA-AK220EB D600 S612 POWER W679 C642 W680 W684 C682 C674 W650 CP601 IC603 R634 R635 1 23 R976 C924 C923 W616 C922 W630 W622 CP602 9 11 13 15 14 16 22 24 26 28...

  • Page 71: D) Tact

    SA-AK220E / SA-AK220EB 18.4. (D) Tact P.C.B. TACT P.C.B (REPX0426B) S615 S616 S909 S906 R905 R909 DECK1/2 DECK1 DECK2 R906 R614 R615 CP900 S908 S907 R908 S614 TAPE 2 3 4 5 6 7 8 9 10 S905 S910 PRESET...

  • Page 72: E) Transformer

    SA-AK220E / SA-AK220EB 18.5. (E) Transformer P.C.B. TRANSFORMER P.C.B (REPX0324H) C963 T951 (SUB-TRANSFORMER) Q952 R957 D968 Q953 C954 C962 J920 R951 F1 T1.25AL C952 T950 (POWER TRANSFORMER) C953 Q950 C960 CN951 C958 Q951 D952 C957 D950 FP951 D953 D958 J917...
  • Page 73 SA-AK220E / SA-AK220EB ORMER) L950 F1 T1.25AL 250V JK950 J989 J988 AC IN POWER TRANSFORMER) 230V 50Hz...E J990 230-240V 50Hz...EB J987 RL950 D965 NDARY PRIMARY H THIS P.C.B...

  • Page 74: F) Cd Detect P.c.b., (G) Spindle Position P.c.b. And (H) Cd Loading

    SA-AK220E / SA-AK220EB 18.6. (F) CD Detect P.C.B., (G) Spindle Position P.C.B. and (H) CD Loading P.C.B. CD LOADING P.C.B (REP2578A-N) OPEN PUSH PUSH CD DETECT P.C.B SPINDLE POSITION P.C.B (REP2578A-N) (REP2578A-N) LOAD...

  • Page 75: I) Power

    SA-AK220E / SA-AK220EB 18.7. (I) Power P.C.B. POWER P.C.B (REPX0328H) H950 W950 Q501 Q504 J509 R514 R523 Q503 Q502 R513 FP533 D501 C504 C509 R528 C506 J570 J535 J569 C511 J508 R525 J534 R517 C505 D502 J525 R450 J546 R526...
  • Page 76 SA-AK220E / SA-AK220EB E501 IC501 J569 J508 D502 R450 C521 J582 R546 R251 R448 R455 J578 C447 J579 R454 C446 L402 JK952 R246 J583 C246 J561 9 10 11 12 CN500...

  • Page 77: J) Deck P.c.b. & (K) Deck Mechanism

    SA-AK220E / SA-AK220EB 18.8. (J) Deck P.C.B. & (K) Deck Mechanism P.C.B. DECK P.C.B. DECK MECHANISM P.C.B. (REPX0331A) (REPX0321A) IC1004 Q1001 C1006 R1006 R1005 C1009 C1003 J1000 CS1002 TP10 J1002 L1002 TP11 Q1007 R1004 R1001 J1003 TP12 C1002 C1026 C1011...

  • Page 78: Wiring Connection Diagram

    SA-AK220E / SA-AK220EB 19 Wiring Connection Diagram FM ANT AM ANT JK300 Z120 H950/W950 CD LOADING P.C.B Z101 SOLDER SIDE CN300 CN501 Z102 MAIN/TUNER P.C.B SOLDER SIDE CD DETECT P.C.B SOLDER SIDE POWER P.C.B CN309 SOLDER SIDE 13 14 CN301 CN310 W1 1.
  • Page 79 SA-AK220E / SA-AK220EB 20 Illustration of IC’s, Transistors and Diodes AN7348S-E1 (24P) C0GAM0000005 (10P) C0AABB000117 (8P) C1AA00000612 (5P) C0HBB0000040 (48P) AN22004A-NF (32P) MN6627934CH (80P) C1BB00000747 (42P) C2CBJF000017 (100P) C1BB00000715 (16P) C3ABMB000027 (26P) LA1833NMNTLM (24P) LC72131MDTRM (20P) RSN35H2A-P AN8739SBTE2 (26P) CNB13030R2AU...
  • Page 80 SA-AK220E / SA-AK220EB 21 Terminal Function of IC’s 21.1. IC701 (AN22004A-NF) Servo Pin No. Mark Function DVSS2 Ground for digital circuits Amplifier DVDD2 Power supply digital cirfcuits Pin No. Mark Function SPOUT Spindle motor drive signal APC Amp input output (absolute value output)
  • Page 81 SA-AK220E / SA-AK220EB Pin No. Mark Function Pin No. Mark Function MDATA Micro controller command PVCC2 Power supply (2) for driver data signal input Power supply terminal Micro controller command VREF Reference voltage input load signal input Motor driver (4) input...
  • Page 82 SA-AK220E / SA-AK220EB Pin No. Mark Function Pin No. Mark Function No connection DEMO (H= default demo on, L= default SELECTOR demo off.) PCONT/EFP_/CE O Main transformer control output DCDET DC detect input SP_A Speana control output A SP_B Speana control output B...
  • Page 83 SA-AK220E / SA-AK220EB 22 Troubleshooting Guide...
  • Page 84 SA-AK220E / SA-AK220EB 23 Parts Location and 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 85 SA-AK220E / SA-AK220EB 23.1. Deck Mechanism (RAA4502-S) 23.1.1. Deck Mechanism Parts Location...
  • Page 86 SA-AK220E / SA-AK220EB...
  • Page 87 SA-AK220E / SA-AK220EB 23.1.2. Deck Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks CASSETTE DECK RED0069 R/P HEAD BLOCK UNIT RED0070 P/B HEAD BLOCK UNIT RDG0300 REEL BASE GEAR RDG0301 WINDING RELAY GEAR RDK0026 MAIN GEAR...
  • Page 88 SA-AK220E / SA-AK220EB 23.2. CD Loading Mechanism (RD-DAC026-S) 23.2.1. CD Loading Mechanism Parts Location...
  • Page 89 SA-AK220E / SA-AK220EB...
  • Page 90 SA-AK220E / SA-AK220EB 23.2.2. CD Loading Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks TRAVERSE DECK XTN2+6G SCREW RMX0141 PUSH SPACER RML0517 TIMING LEVER RMQ0749 UPPER SPINDLE...
  • Page 91 SA-AK220E / SA-AK220EB 23.3. Cabinet 23.3.1. Cabinet Parts Location...
  • Page 92 SA-AK220E / SA-AK220EB...
  • Page 93 SA-AK220E / SA-AK220EB...
  • Page 94 SA-AK220E / SA-AK220EB 23.3.2. Cabinet Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks CABINET AND CHASSIS RKA0059-K LEG RUBBER RKFX0093-KJ CASS HOLDER L REEX0202 10P FFC RKFX0094-KJ CASS HOLDER R...
  • Page 95 SA-AK220E / SA-AK220EB Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks Q508 B1AAKD000009 TRANSISTOR D955 1T3T DIODE Q512 B1AAGC000007 TRANSISTOR D956 1T3T DIODE Q513 B1AAGC000007 TRANSISTOR D957 1T3T DIODE Q514...
  • Page 96 SA-AK220E / SA-AK220EB Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks CN951 K1KA09A00047 9P CONNECTOR CN971 K1MN10B00104 10P FFC CONNECTOR FP533 K5G400A00001 FUSABLE RESISTOR CN1001 K1MN14B00058 14P CONNECTOR FP950 K5G402AA0002...
  • Page 97 SA-AK220E / SA-AK220EB Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R132 ERJ3GEYJ103V 10K 1/16W R313 ERJ3GEYJ472V 4.7K 1/16W R133 ERJ3GEYJ102V 1K 1/16W R314 ERJ3GEYJ472V 4.7K 1/16W R134 ERJ3GEYJ471V 470 1/16W...
  • Page 98 SA-AK220E / SA-AK220EB Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R413 ERJ3GEYJ473V 47K 1/16W R523 ERDS2TJ471T 470 1/4W R414 ERJ3GEYJ102V 1K 1/16W R524 ERDS2TJ2R2T 2.2 1/4W R415 ERJ3GEYJ473V 47K 1/16W...
  • Page 99 SA-AK220E / SA-AK220EB Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R750 ERJ3GEYJ5R6V 5.6 1/16W R1005 ERJ3GEYJ472V 4.7K 1/16W R753 D0GB100JA002 10 1/16W R1006 ERJ3GEYJ102V 1K 1/16W R760 D0GB101JA002 100 1/16W...
  • Page 100 SA-AK220E / SA-AK220EB Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C115 ECEA1HKA4R7B 4.7 50V C309 ECEA1AKN100B 10 10V C116 ECJ1VB1C333K 0.033 16V C310 ECEA0JKA101B 100 6.3V C117 ECJ1VB1H123K 0.012 50V...
  • Page 101 SA-AK220E / SA-AK220EB Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C416 F1J1E224A126 0.22 25V C707 ECJ1VB1C393K 0.039 16V C417 ECJ1VB1H222K 2200P 50V C710 ECJ1VB1H471K 470P 50V C418 ECEA1CKA100B 10 16V...
  • Page 102 SA-AK220E / SA-AK220EB Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C1006 ECEA1HKA010B 1 50V C1041 ECEA1CKA100B 10 16V C1007 F0A2A472A015 4700P 100V C1042 ECEA1CKA220B 22 16V C1008 ECEA1HKA010B 1 50V...
  • Page 103 SA-AK220E / SA-AK220EB 23.6. Packaging PRT0403 D/K/J/N/L...

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