Specifications
n AMPLIFIER SECTION |
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RMS output power |
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THD 10%, both channels driven |
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1 kHz |
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100 W per channel (5 Ω) |
Total RMS power |
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200 W |
n FM/AM TUNER, TERMINALS SECTION |
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Preset station |
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FM 15 stations |
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AM 15 stations |
Frequency Modulation |
(FM) |
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Frequency range |
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87.50 - 108.00 MHz (50 kHz |
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steps) |
Sensitivity |
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2.5 µV (IHF) |
S/N 26 dB |
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2.2 µV |
Antenna terminal(s) |
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75 Ω (unbalanced) |
Amplitude Modulation |
(AM) |
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Frequency range |
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522 - 1629 kHz (9 kHz steps) |
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520 - 1630 kHz (10 kHz steps) |
Sensitivity |
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S/N 20 dB (at 999 kHz) |
560 µV/m |
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Audio performance (Amplifier) |
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Input sensitivity/Input impedance |
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Aux |
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250 mV,14.7 kΩ |
Phone jack |
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Terminal |
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Stereo, 3.5 mm jack |
n CASSETTE DECK SECTION |
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ORDER NO. MD0412597C3
CD Stereo System
SA-AK230GCP
Colour
(S)... Silver Type
Track system |
4 track, 2 channel |
Heads |
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Record/playback |
Solid permalloy head |
Erasure |
Double gap ferrite head |
Motor |
DC servo motor |
Recording system |
AC bias 100 kHz |
Erasing system |
AC erase 100 kHz |
Tape speed |
4.8 cm/s |
Overall frequency response (+3 dB, -6 dB at DECK OUT) |
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NORMAL |
35 Hz - 14 kHz |
S/N |
50 dB (A weighted) |
Wow and flutter |
0.18 % (WRMS) |
Fast forward and rewind time |
Approx. 120 seconds with |
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C-60 cassette tape |
n DISC SECTION
Discs played [8 cm or 12 cm]
(1)CD-Audio (CD-DA)
(2)CD-R/RW (CD-DA, MP3 formatted discs)
(3)MP3
Bit rate |
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MP3 |
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32 kbps - 320 kbps |
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Sampling frequency |
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MP3 |
32 kHz, 44.1 kHz, 48 kHz |
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CD |
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44.1 kHz |
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Decoding |
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16 bit linear |
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Digital filter |
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8 fs |
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© 2004 Matsushita Electric Industrial Co. Ltd.. All |
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rights reserved. |
Unauthorized |
copying and |
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distribution is a violation of law. |
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SA-AK230GCP
D/A converter |
MASH (1 bit DAC) |
Pickup |
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Wavelength |
780 nm |
Beam Source |
Semiconductor laser |
Audio output (Disc) |
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Number of channels |
2 (Stereo) (FL,FR) |
n GENERAL |
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Power Supply |
AC 110-127/220-240 V, 50/60 Hz |
Power consumption |
179 W |
Power consumption in standby |
0.85 W |
mode |
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Dimensions (W x H x D) |
250 x 330 x 341 mm |
Mass |
6.9 kg |
Operating temperature range |
+5 to +35°C |
Operating humidity range |
5 to 90% RH (no condensation) |
n SYSTEM |
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SC-AK230 (GCP) |
Music center: SA-AK230 (GCP) |
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Speaker: SB-AK230 (GC) |
Notes: |
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1.Specifications are subject to change without notice. Mass and dimensions are approximate.
2.Total harmonic distortion is measured by the digital spectrum analyzer.
CONTENTS
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Page |
1 |
Before Use |
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4 |
2 |
Before Repair and Adjustment |
4 |
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3 |
Protection Circuitry |
4 |
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4 |
Prevention of Electro Static Discharge (ESD) to |
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Electrostatically Sensitive (ES) Devices |
4 |
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5 |
Handling the Lead-free Solder |
5 |
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5.1. About lead free solder (PbF) |
5 |
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6 |
Handling Precautions For Traverse Deck |
6 |
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7 |
Precaution of Laser Diode |
7 |
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8 |
Accessories |
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8 |
9 |
Operation Procedures |
9 |
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10 |
Disassembly and Assembly of Main Component |
11 |
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10.1. Disassembly |
flow chart |
11 |
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10.2. Gear for servicing (jig) Information |
12 |
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10.3. Disassembly of Top Cabinet |
13 |
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10.4. Disassembly of CD Lid |
13 |
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10.5. Disassembly of Rear Panel |
15 |
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10.6. Disassembly of CD Mechanism Unit |
15 |
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10.7. Disassembly of Main P.C.B. |
16 |
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10.8. Disassembly of Power P.C.B. |
16 |
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10.9. Disassembly of Transformer P.C.B. |
17 |
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10.10. Disassembly of Front Panel Unit |
18 |
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10.11. Disassembly of Deck Mechanism Unit |
18 |
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10.12. CD Mechanism Main Component Replacement |
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Procedures |
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19 |
10.13.Replacement for the pinch roller ass and head block 33
10.14.Replacement for the Deck motor ass , capstan belt A,
capstan belt B and winding belt |
34 |
10.15. Replacement for the cassette lid ass |
37 |
10.16. Rectification for tape jam problem |
38 |
11 Checking for major P.C.Bs |
39 |
11.1. Checking of Main P.C.B. |
39 |
11.2. Checking of Transformer P.C.B. |
40 |
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Page |
11.3. Checking of Panel, Deck & Deck Mechanism P.C.B. |
41 |
11.4. Checking of Power P.C.B. |
42 |
12 Self-Diagnostic Function |
43 |
12.1. Self-diagnostic display |
43 |
12.2. How to enter the Self-Diagnostic Function |
43 |
12.3. Cassette Mechanism Test (For error code H01, H02, H03, |
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F01) |
43 |
12.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, |
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F30, H15 & H16) |
43 |
12.5. To clear all Error code |
44 |
12.6. To exit from Self-Diagnostic function |
44 |
12.7. Power Amplifier Failure (F61) |
44 |
12.8. Description of Error Code |
44 |
13 CD Test Mode Function |
46 |
13.1. How to set CD test mode |
46 |
13.2. CD Automatically Adjustment result indication |
46 |
13.3. CD Mecha Aging Test Mode (CR20) |
46 |
13.4. Micon ROM Checksum and Version Display Mode |
47 |
14 Measurements and Adjustments |
48 |
14.1. Cassette Deck Section |
48 |
14.2. Tuner Section |
48 |
14.3. Alignment Points |
49 |
15 Block Diagram |
50 |
16 Voltage Measurement |
57 |
17 Schematic Diagram |
59 |
17.1. (A) CD Servo Circuit |
60 |
17.2. (B) Main (Tuner) Circuit |
62 |
17.3. (B) Main Circuit |
63 |
17.4. (C) Panel Circuit |
67 |
17.5. (D) Transformer Circuit, (E) CD Detect Circuit, (F) Spindle |
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Position Circuit & (G) CD Loading Circuit |
69 |
17.6. (H) Power Circuit |
70 |
17.7. (I) Deck Circuit & (J) Deck Mechanism Circuit |
71 |
2
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SA-AK230GCP |
18 |
Printed Circuit Board |
73 |
21.1. IC7002 (MN6627953HB) Servo processor/ Digital signal |
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18.1. (A) CD Servo P.C.B. |
73 |
processor/ Digital filter/ D/A converter |
85 |
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18.2. (B) Main P.C.B. |
74 |
21.2. IC7003 (AN8739SBTE2) Focus coil/ Tracking coil/ |
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18.3. (C) Panel P.C.B. |
76 |
Traverse motor/ Spindle motor drive |
85 |
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18.4. (D) Transformer P.C.B. |
78 |
21.3. IC2801 (C2CBJG000565) System Microprocessor |
86 |
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18.5. (E) CD Detect P.C.B., (F) Spindle Position P.C.B., (G) CD |
22 Troubleshooting Guide |
87 |
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Loading P.C.B. & (K) Tuner Pack P.C.B. |
79 |
23 Parts Location and Replacement Parts List |
88 |
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18.6. (H) Power P.C.B. |
80 |
23.1. Deck Mechanism (RAA4502-S) |
89 |
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18.7. (I) Deck P.C.B. & (J) Deck Mechanism P.C.B. |
82 |
23.2. CD Loading Mechanism (RD-DAC026-S) |
92 |
19 |
Wiring Connection Diagram |
83 |
23.3. Cabinet |
95 |
20 |
Illustration of IC , Transistors and Diodes |
84 |
23.4. Electrical Parts List |
97 |
21 |
Terminal Function of IC |
85 |
23.5. Packing Materials & Accessories Parts List |
104 |
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23.6. Packaging |
105 |
3
SA-AK230GCP
1 Before Use
Be sure to disconnect the mains cord before adjusting the voltage selector.
Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will be used. (If the power supply in your area is 117V or 120V, set to the “127V” position.)
Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries, the correct voltage is already set.)
2 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C5820 and C5840 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. After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 127 V, 50/60 Hz in NO SIGNAL mode (volume min at CD mode) should be ~500mA. Current consumption at AC 220-240 V, 50/60 Hz in NO SIGNAL mode (volume min at CD mode) should be ~350mA.
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.
If this occurs, follow the procedure outlines below:
1.Turn off the power.
2.Determine the cause of the problem and correct it.
3.Turn on the power once again after one minute.
Note :
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
4 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called Electrostatica lly Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by electro static discharge (ESD).
1.Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.
2.After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminium foil, to prevent electrostatic charge build up or exposure of the assembly.
3.Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4.Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can generate electrical charge to damage ES devices.
5.Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6.Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or comparable conductive material).
7.Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
4
SA-AK230GCP
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 damage an ES device).
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. In case of soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
·Pb free solder will tend to splash when heated too high (about 1100°F/600°C).
·When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the soldering points with the Pb free solder until it melts enough.
5
SA-AK230GCP
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).
· Handling of traverse deck (optical pickup)
1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock.
2.To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board).
3.Take care not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish the job in as short time as possible.
4.Do not turn the variable resistor (laser power adjustment). It has already been adjusted.
Grounding for electrostatic breakdown prevention
1.Human body grounding
Use the anti-static wrist strap to discharge the static electricity from your body.
2.Work table grounding
Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is place, and ground the sheet.
Caution :
The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the traverse deck (optical pickup).
Caution when replacing the Traverse Deck
The traverse deck has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure to remove the solder from the short point before making connections.
6
SA-AK230GCP
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.Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous.
2.Do not adjust the variable resistor on the pick up unit. It was already adjusted.
3.Do not look at the focus lens using optical instruments.
4.Recommend not to look at pick up lens for a long time.
CAUTION!
THIS PRODUCT UTILIZES A LASER.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
n Use of Caution Labels
7
SA-AK230GCP
8 Accessories
Remote Control
FM Antenna
AC Cord
AM Loop Antenna
AC Plug Adaptor
8
SA-AK230GCP
9 Operation Procedures
9
SA-AK230GCP
10
SA-AK230GCP
10 Disassembly and Assembly of Main Component
“ATTENTION SERVICER”
Some chassis components may have sharp edges. Be careful when disassemblin g and servicing.
1.This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components.
2.For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required.
3.Select items from the following index when checks or replacement are required.
4.Refer to the Parts No. on the page of “Parts Location and Replacement Parts List” (Section 23), if necessary.
10.1. Disassembly flow chart
The following chart is the procedure for disassemblin g 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.
11
SA-AK230GCP
10.2. Gear for servicing (jig) Information
1.This unit has a gear which is used for checking items (Open/Close of disc tray, up/down operation of traverse unit by manually) when servicing.
2.For preparation of gear (for servicing), perform the procedures as follows.
3.In case of re-servicing the same set, the “gear for servicing” may has been taken off because it has been used. The “gear for servicing” must be stored.
· Remove the gear provided with mecha cover as shown below.
· Insert the hexagonal screwdriver (2mm) into the gear, and then project the tip of screwdriver for 1~ 2 mm in length.
12
SA-AK230GCP
10.3. Disassembly of Top Cabinet
Step 1 Remove 2 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 and remove the top cabinet.
10.4. Disassembly of CD Lid
(The CD changer unit can be removed after the CD Lid is removed)
· Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet
· Opening the disc tray automatically (Using Power Supply) Step 1 Connect the AC power cord.
Step 2 Press the POWER button to power up the main unit.
Step 5 Press the OPEN/CLOSE button, the disc tray will close.
Step 3 Press the OPEN/CLOSE button, the disc tray will open automatically .
Step 4 Release the 2 claws, and then remove the CD Lid.
13
SA-AK230GCP
Step 6 Press the POWER button to turn the power off.
· [Opening the disc tray manually (Using service tools)]
Step 1 Insert the gear tool into the hole on the underside of CD chassis and then rotate in the direction of arrow. The disc tray will be opened.
Step 2 Release the 2 claws, and then remove the CD lid cover.
Step 3 Repeat Step 2 but rotate the gear tools in anti-clockwise direction.
Step 4 The disc tray will be closed.
14
SA-AK230GCP
10.5. Disassembly of Rear Panel
· Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet
Step 1 Remove 8 screws and disconnect wire CN2810 (Fan) at rear cabinet as shown.
10.6. Disassembly of CD Mechanism Unit
· Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Step 1 Remove one screw at rear panel.
Step 2 Detach the FFC wires (CN2801 & CN2805).
Step 4 Remove 4 screws.
Step 5 Remove the CD chassis.
Step 6 Lay the CD mechanism unit as shown.
· For disassembly of CD mechanism unit, please refer to Section 10.12 of this manual.
Step 3 Release the claws of both ends, and then lift up the CD
Mechanism Unit.
15
SA-AK230GCP
10.7. Disassembly of Main P.C.B.
· Follow the (Step 1) - (Step |
2) of Item |
10.3 |
- Disassembly |
of Top Cabinet |
· Follow the (Step 1) - (Step |
6) of Item |
10.4 |
- Disassembly |
of CD Lid |
·Follow the (Step 1) of Item 10.5 - Disassembly of Rear Panel
·Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit
Step 1 Disconnect FFC wires CN2803 & CN2806 from Main |
Step 2 Lift up Main P.C.B. by disconnecting connectors |
P.C.B. |
CN5800 & CN5801 as arrow shown above. |
10.8. Disassembly of Power P.C.B.
· Follow the (Step 1) - (Step 2) of Item 10.3 |
- Disassembly |
of Top Cabinet |
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· Follow the (Step 1) - (Step 6) of Item 10.4 |
- Disassembly |
of CD Lid |
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· Follow the (Step 1) of Item 10.5 - Disassembly of Rear Panel |
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· Follow the (Step 1) - (Step |
3) of Item |
10.6 |
- Disassembly of CD Mechanism Unit |
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· Follow the (Step 1) - (Step |
2) of Item |
10.7 |
- Disassembly |
of Main P.C.B. |
Step 1 Remove the 2 screws fixed at heat sink and 1 screw |
Note: |
fixed at Power P.C.B.. |
Insulate the Power P.C.B. with insulation material to avoid short |
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circuit. |
16
SA-AK230GCP
· Replacement of the Power Amplifier IC/ Voltage Regulator
Step 1 Remove 2 screws fixed to the Power Amplifier IC and 1 screw to Voltage Regulator.
Step 3 Unsolder the terminals of Power Amp IC, transistor and replace the components.
Step 4 Fix back the cut portion with a screw as shown.
Step 2 Break the joint with a metal cutter as shown below.
10.9. Disassembly of Transformer P.C.B.
· Follow the (Step 1) - (Step |
2) of Item |
10.3 |
- Disassembly |
of Top Cabinet |
· Follow the (Step 1) - (Step |
6) of Item |
10.4 |
- Disassembly |
of CD Lid |
·Follow the (Step 1) of Item 10.5 - Disassembly of Rear Panel
·Follow the (Step 1) - (Step 3) of Item 10.6 - Disassembly of CD Mechanism Unit Step 1 Remove 3 screws, disconnect connector CN5950.
17
SA-AK230GCP
10.10. Disassembly of Front Panel Unit
· Follow the (Step 1) - (Step 2) of Item 10.3 |
- Disassembly of Top Cabinet |
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· Follow the (Step 1) - (Step |
6) of Item |
10.4 |
- Disassembly |
of CD Lid |
· Follow the (Step 1) - (Step |
3) of Item |
10.6 |
- Disassembly |
of CD Mechanism Unit |
Step 1 Lay the unit as shown below.
Step 2 Release 2 claws at bottom and 2 claws each side, draw the front panel ass’y forward.
Step 3 Remove volume knob.
· Disassembly of Panel P.C.B.
Step 4 Remove 10 screws.
Step 5 Disconnect connectors (CN2806, CN2803 and CN5950).
10.11. Disassembly of Deck Mechanism Unit
· Follow the (Step 1) |
- (Step 2) of Item 10.3 |
- Disassembly of Top Cabinet |
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· Follow the (Step 1) |
- (Step 6) of Item 10.4 |
- Disassembly |
of CD Lid |
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· Follow the (Step 1) |
- (Step |
3) of Item |
10.6 |
- Disassembly |
of CD Mechanism Unit |
· Follow the (Step 1) |
- (Step |
3) of Item |
10.10 - Disassembly of Front Panel Unit |
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Step 1 Detach FFC wire (CN971).
Step 2 Disconnect FFC flat cable from the connector (CN1001).
Step 3 Remove the 5 screws.
Step 4 Push the lever upward, and then open the cassette lid ass’y (For DECK1 and DECK2).
Step 5 Tilt the cassette mechanism unit in the direction of arrow (1), and then remove it in the direction of arrow (2).
· For replacement of Deck Mechanism P.C.B. Step 6 Remove 3 screws.
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SA-AK230GCP
Step 7 Unsolder the motor terminals.
Step 8 Remove Deck Mechanism P.C.B.
10.12. CD Mechanism Main Component Replacement Procedures
· Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet
· Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid
· Follow the (Step 1) - (Step 6) of Item 10.6 - Disassembly of CD Mechanism Unit
10.12.1. Replacement of the Traverse Deck
Step 1 Remove the CD changer unit.
Step 2 Insert the gear with hexagonal wrench into the hole.
Step 4 With pressing the claw (A), rotate the hexagonal wrench clockwise. (The slide plate R moves for a little amount.)
Step 5 Pressing the claw (B) in the direction of arrow (1), the connection lever moves in the direction of arrow (2).
Step 3 Rotate the hexagonal wrench in the direction of arrow (clockwise), and then open the disc tray fully.
19
SA-AK230GCP
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.
Step 8 Remove 3 screws.
Step 9 Unsolder the motor terminals (4 points).
Step 10 Remove the FFC board from the connector, and then remove the CD Servo P.C.B.
Step 11 Remove the pin.
Step 12 Release the claw, and then remove the traverse deck ass’y.
20
Note:
Be careful not to lose the 3 floating spring because those will also be removed on removal of the traverse deck ass’y.
· Installation of the CD Servo P.C.B. after replacement Step 1 Connect the FFC board.
Step 2 Install the CD servo P.C.B. in the traverse deck ass’y. Step 3 Remove 3 screws.
Step 4 Solder.
· Note for installation of the CD servo P.C.B.
· Installation for traverse deck ass’y
SA-AK230GCP
Step 1 Install the traverse deck ass’y to the timing lever.
Step 2 Align the boss of traverse deck ass’y with the slot of traverse cam gear.
Step 3 Force the claw of timing lever.
Step 4 Force the disc tray fully.
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SA-AK230GCP
Step 5 With pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2).
10.12.2. Replacement for the Disc Tray
Step 1 Remove 4 screws.
Step 2 Remove the upper plate.
Step 3 Remove 3 screws. |
|
Step 4 With lifting the claw in the direction of (1), draw the CD |
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Detect P.C.B. in the direction of arrow (2). |
Step 5 Remove the mechanism cover. |
|
22
SA-AK230GCP
Step 6 Insert the gear with hexagonal wrench into the hole.
Step 7 Rotate the hexagonal wrench in the direction of arrow, and then open the disc tray fully.
Step 8 Release the both claws, and then draw the disc tray.
Step 9 With forcing the left guide bar manually because the left guide bar interfers with claw, draw the disc tray.
[Installation of the disc tray after replacement]
Step 1 Slide the drive rack fully in the direction of arrow.
Step 2 Holding the drive rack not to move, install the disc tray. Step 3 Align the drive rack with the drive gear.
23
SA-AK230GCP
NOTE:
Force the right guide bar of tray base manually not to move upwards.
Step 4 Holding the disc tray manually, push the disc tray in the direction of the arrow.
10.12.3. 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 5 Release the 2 claws, and then remove the bottom SW P.C.B..
NOTE:
Take care not to lose the change gear spring.
Step 4 Remove the pulley gear, change gear and UP/DOWN gear.
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SA-AK230GCP
Step 6 Install the tray lock spring to hook temporary. Step 7 Release the claw, and then remove the tray lock. Step 8 Release the claw, and then remove the rear lock.
Step 9 Pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2).
Step 10 Move the slide plate 1 to the end of stock side.
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SA-AK230GCP
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 12 Remove slide plate 1 and slide plate 2.
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.
Step 2 Pushing the claw, slide the support plate in the direction of arrow, and then remove it.
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SA-AK230GCP
Step 3 Rotate the disc lever in the direction of arrow (1), draw the disc lever.
NOTE:
Take care not to lose the disc lever spring.
Step 4 Release the 2 claws, and then draw the relay gear B. Step 5 Release the 2 claws as shown below.
NOTE:
Hold the loading stopper ass’y manually bacause it is flipped by spring.
Step 6 Remove the cushion spring.
Step 7 Remove the loading stopper ass’y in the direction of arrow.
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SA-AK230GCP
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.
Step 10 Remove the lower spindle spring with tweezers. Step 11 Force the lower hook with thin tip of minus screwdriver.
Step 12 Squeeze the shaft of lower hook, and then draw it.
Step 13 Rotate the lower spindle in the direction of arrow until the lower spindle interferes with stopper.
Step 14 Insert the thin tip of minus screwdriver between the lower spindle and UP/DOWN base, and then slacken the lower spindle to release the stopper. Then, rotate the lower spindle and remove it.
Step 15 Rotate the UP/DOWN base at a 90° angle. Then,
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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.)
Step 2 Lower the loading stopper ass’y, and then align the lower spindle with the trapezoid tooth of relay gear A.
Step 3 Force the loading stopper ass’y, latch the claw firmly.
[Reassembly for mechanism base drive unit]
SA-AK230GCP
Step 1 Install the traverse cam gear.
Step 2 Rotate the traverse cam gear to the direction of arrow.
Step 3 Install the drive gear and traverse relay gear.
*When installing the traverse relay gear, align the trapezoid tooth of gear with tooth of traverse cam gear.
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SA-AK230GCP
Step 4 Install the slide plate 2 to the mechanism base, and then match to the connection lever.
Step 5 Install the slide plate 1 to the mechanism base, and then match to the connection leve and align the trapezoid tooth of traverse relay gear with the slide plate 1.
Step 6 Install the spindle base unit. (First, slide plate 1.)
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.)
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