ORDER NO. MD0501011C2
CD Stereo System
SA-PM31E
SA-PM31EB
SA-PM31EG
Colour
(S)... Silver Type
Specification
n Amplifier Section |
|
Track system |
4 track, 2 channel |
RMS power output |
|
Heads |
|
10% Total harmonic distortion |
|
Record/playback |
Solid permalloy head |
1 kHz, both channels driven |
|
Erasure |
Double gap ferrite head |
(Low channel) |
41 W per channel (6Ω) |
Motor |
DC servo motor |
8 kHz, both channels driven |
|
Recording system |
AC bias 100 kHz |
(High channel) |
39 W per channel (6Ω) |
Erasing system |
AC erase 100 kHz |
Total Bi-Amp power |
80 W per channel |
Tape speed |
4.8 cm/s |
Output Impedance |
|
Overall frequency response (+3 dB, -6 dB at DECK OUT) |
|
Headphone |
16Ω - 32Ω |
NORMAL |
35 Hz - 14 kHz |
|
|
S/N RATIO |
42.64 dB (A weighted) |
n FM Tuner Section |
|
Wow and flutter |
0.08% (WRMS) |
Frequency range |
87.50 MHz - 108.00 MHz |
Fast forward and rewind time |
Approx. 120 seconds with C-60 |
|
(50 kHz steps) |
|
cassette tape |
Sensitivity |
1.02 µV (IHF) |
S/N 26 dB |
1.00 µV |
Antenna terminal(s) |
75Ω (unbalanced) |
n AM Tuner Section |
|
Frequency range |
522 kHz - 1629 kHz (9 kHz |
|
steps) |
|
520 kHz - 1630 kHz (10 kHz |
|
steps) |
Sensitivity |
|
S/N 20 dB (at 999 kHz) |
900 µV/m |
n Cassette Deck Section |
|
n CD Section |
|
Disc |
|
CD, CD-R, CD-RW, MP3 |
8 cm/12 cm |
Sampling frequency |
44.1 kHz |
Decoding |
16/20/24 bit linear |
Beam source/wavelength |
Semiconductor laser / 780 nm |
Number of channels |
Stereo |
Frequency response |
20 Hz - 20 kHz (+1dB, -2dB) |
Wow and flutter |
Below measurable limit |
Digital filter |
8 fs |
D/A converter |
MASH (1 bit DAC) |
© 2005 Matsushita Electric Industrial Co. Ltd.. All rights reserved. Unauthorized copying and distribution is a violation of law.
SA-PM31E / SA-PM31EB / SA-PM31EG
MP3 |
|
Bit rate |
32 kbps - 320 kbps |
Sampling frequency |
32 kHz, 44.1 kHz, 48 kHz |
n General |
|
Power supply |
AC 230 V, 50 Hz (E/EG) |
|
AC 230 - 240 V, 50 Hz (EB) |
Power consumption |
130 W |
Dimensions (W x H x D) |
175 mm x 254 mm x 390.7 |
|
mm |
Mass |
5.63 kg |
Power consumption in standby mode: |
0.6 W |
n System: SC-PM31E-S |
Music Center: SA-PM31E-S |
|
Front speaker: SB-PM31E-M |
n System: SC-PM31EB-S |
Music Center: SA-PM31EB-S |
|
Front speaker: SB-PM31E-M |
n System: SC-PM31EG-S |
Music Center: SA-PM31EG-S |
|
Front speaker: SB-PM31E-M |
Notes: |
|
1.Specifications are subject to change without notice. Mass and dimensions are approximate.
2.Total harmonic distortion is measured by the digital spectrum analyzer.
3.The labels “HIGH” and “LOW” on the rear of the speakers refer to High frequency and Low frequency.
CONTENTS
|
Page |
|
Page |
|
1 |
Safety Cautions |
4 |
11.18. Procedure for Replacing Motor, Capstan Belt A, Capstan |
|
|
1.1. GENERAL GUIDELINES |
4 |
Belt B, and Winding Belt (Cassette Mechanism Unit) |
23 |
2 |
Caution for AC Mains Lead |
5 |
11.19. Procedure for Replacing Parts on Mechanism PCB |
25 |
3 |
Before Repair and Adjustment |
6 |
11.20. Replacement of CD traverse deck |
25 |
4 |
Protection Circuitry |
6 |
11.21. Replacement of optical pickup unit (CD mechanism) |
27 |
5 |
Handling the Lead-free Solder |
6 |
11.22. Replacement of a traverse gear A and a traverse gear B |
|
|
5.1. About lead free solder (PbF) |
6 |
|
28 |
6 |
Precaution of Laser Diode |
7 |
11.23. Procedure for removing CD loading mechanism |
29 |
7 |
Handling Precautions For Traverse Deck |
8 |
11.24. CR16 mechanism disassembly procedure |
29 |
8 |
Accessories |
9 |
11.25. CR16 MECHANISM ASSEMBLY PROCEDURE |
36 |
9 |
Operating Procedures |
10 |
11.26. Disassembly of traverse mechanism |
48 |
10 |
Information on Disc and MP3 |
12 |
11.27. Handling of Cassette Tape jam |
49 |
11 |
Assembling and Disassembling |
13 |
12 Service Positions |
50 |
|
11.1. Disassembly flow chart |
13 |
12.1. Checking procedure |
50 |
|
11.2. Disassembly of Side Panel L & R |
14 |
12.2. Checking the major P.C.B. |
50 |
|
11.3. Disassembly of Top Cabinet Unit |
14 |
13 Self-Diagnostic Display Function |
51 |
|
11.4. Disassembly of Deck P.C.B. and Tape Eject P.C.B. |
14 |
13.1. Entering into Self-Diagnostic Mode |
51 |
|
11.5. Disassembly of Front Panel Unit |
15 |
13.2. Clearing Self-Diagnostic Memory |
52 |
|
11.6. Disassembly of Main Control P.C.B., Function P.C.B. and |
13.3. Displaying Self-Diagnostic Results |
53 |
|
|
Power-In P.C.B. |
16 |
13.4. Error Code Table |
53 |
|
11.7. Disassembly of Panel P.C.B. |
16 |
13.5. Cassette Mechanism Self-Diagnostic Mode |
54 |
|
11.8. Disassembly of Rear Cabinet |
17 |
13.6. Changer Reliability Test Mode |
54 |
|
11.9. Disassembly of Main P.C.B. |
17 |
13.7. Changer Operation Checking |
55 |
|
11.10. Disassembly of Transformer P.C.B. |
18 |
13.8. CR16 Mechanism Ageing Mode |
55 |
|
11.11. Disassembly of Tuner Pack |
18 |
14 Procedure for Checking Operation of Individual Parts of |
|
|
11.12. Disassembly of Power P.C.B |
19 |
Cassette Mechanism Unit |
56 |
|
11.13. Disassembly of CR16 Mechanism |
19 |
14.1. Operation Check with Cassette Tape |
56 |
|
11.14. Replacement of CD Lid |
20 |
14.2. Operation Check without Cassette Tape |
56 |
|
11.15. Replacement of Cassette Lid |
21 |
15 Measurement And Adjustments |
58 |
|
11.16. Replacement of the Power IC and Transistors. |
22 |
15.1. Tuner/CD Sections |
58 |
|
11.17. Procedure for Replacing Pinch Roller and Head Block |
|
15.2. Cassette Deck Section |
58 |
|
(Cassette Mechanism Unit) |
23 |
16 Voltage Measurement and Waveform Chart |
60 |
2
SA-PM31E / SA-PM31EB / SA-PM31EG
16.1. Waveform |
63 |
|
20.5. Deck P.C.B. and Tape Eject P.C.B. |
92 |
17 Block Diagram |
64 |
|
20.6. CD Loading P.C.B. |
93 |
17.1. CD Servo Block |
64 |
|
20.7. Power P.C.B. |
94 |
17.2. Main Block |
66 |
|
20.8. Transformer P.C.B. |
95 |
18 Notes of Schematic Diagram |
71 |
21 |
Wiring Connection Diagram |
96 |
19 Schematic Diagram |
72 |
22 |
Illustration of IC , Transistors and Diodes |
98 |
19.1. CD Servo Circuit |
72 |
23 |
Terminal Function of IC s |
99 |
19.2. Main Circuit |
74 |
|
23.1. IC702 (MN6627953HB) Servo processor/ Digital signal |
|
19.3. Main Control Circuit, Panel Circuit, Power-In Circuit and |
|
|
processor/ Digital filter/ D/A converter |
99 |
Function Circuit |
78 |
|
23.2. IC703 (BA5948FPE2) IC 4CH DRIVE |
99 |
19.4. Deck Circuit, Deck Mechanism Circuit and Tape Eject |
|
|
23.3. IC302 (C2CBJG000574) MICRO PROCESSOR |
100 |
Circuit |
80 |
24 |
Troubleshooting Flowchart (CD Section Circuit) |
102 |
19.5. Power Circuit |
82 |
25 |
Parts Location and Replacement Parts List |
104 |
19.6. Transformer Circuit |
85 |
|
25.1. Deck Mechanism |
105 |
19.7. CD Loading Circuit |
86 |
|
25.2. CD Loading Mechanism |
107 |
20 Printed Circuit Board |
87 |
|
25.3. Cabinet |
112 |
20.1. CD Servo P.C.B. |
87 |
|
25.4. Electrical Part List |
116 |
20.2. Main P.C.B. |
88 |
|
25.5. Packaging Materials & Accessories Parts List |
124 |
20.3. Main Control P.C.B. and Panel P.C.B. |
90 |
|
25.6. Packaging |
124 |
20.4. Power In P.C.B., Function P.C.B. and Deck Mechanism |
|
|
|
|
P.C.B. |
91 |
|
|
|
3
SA-PM31E / SA-PM31EB / SA-PM31EG
1 Safety Cautions
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, insulation papers shields are properly installed.
3.After servicing, check for leakage current checks to prevent from being exposed to shock hazards.
1.1.1.LEAKAGE CURRENT COLD CHECK
1.Unplug the AC cord and connect a jumper between the two prongs on the plug.
2.Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1MΩ and 5.2Ω.
When the exposed metal does not have a return path to the chassis, the reading must be 
.
Fig. 1
1.1.2.LEAKAGE CURRENT HOT CHECK (See Figure 1.)
1.Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2.Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15µF capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.
3.Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4.Check each exposed metallic part, and measure the voltage at each point.
5.Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6.The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. Should the measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned to the customer.
4
SA-PM31E / SA-PM31EB / SA-PM31EG
2 Caution for AC Mains Lead
5
SA-PM31E / SA-PM31EB / SA-PM31EG
3 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C506, C507, C508, C600, C601, C602, C620 through a 10Ω, 1W 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 230V, 50 Hz in NO SIGNAL mode (volume min) should be ~300 mA (E/EG).
·Current consumption at AC 230-240V, 50 Hz in NO SIGNAL mode (volume min) should be ~300 mA (EB).
4 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.
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.
6
SA-PM31E / SA-PM31EB / SA-PM31EG
6 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.
ACHTUNG :
Dieses Produkt enthält eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit abgestrahlt.
Wellenlänge : 780nm
Maximale Strahlungsleistung der Lasereinheit :100µW/VDE
Die Strahlung an der Lasereinheit ist ungefährlich, wenn folgende Punkte beachtet werden:
1.Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefährlich ist.
2.Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.
3.Nicht mit optischen Instrumenten in die Fokussierlinse blicken.
4.Nicht über längere Zeit in die Fokussierlinse blicken.
ADVARSEL :
I dette a apparat anvendes laser.
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-PM31E / SA-PM31EB / SA-PM31EG
7 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).
l Handling of CD 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.The short land between the No.4 (LD) and No.5 (GND) pins on the flexible board (FFC) is shorted with a solder build-up to prevent damage to the laser diode (Fig 1).
3.Take care not to apply excessive stress to the flexible board (FPC board).
4.Do not turn the variable resistor (laser power adjustment). It has already been adjusted.
Fig 2
Caution when Replacing the Optical Pickup :
The traverse 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.
Fig 1
l Grounding for electrostatic breakdown prevention
1.Human body grounding (Fig 2)
Use the anti-static wrist strap to discharge the static electricity from your body.
2.Work table grounding (Fig 2)
Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is placed, 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).
8
SA-PM31E / SA-PM31EB / SA-PM31EG
8 Accessories
Note : Refer to Packaging Materials & Accessories for the part number.
AC cord (EB)
AC cord (E/EG)
FM antenna
AM loop antenna
Antenna plug adaptor
Remote control
9
SA-PM31E / SA-PM31EB / SA-PM31EG
9 Operating Procedures
10
SA-PM31E / SA-PM31EB / SA-PM31EG
11
SA-PM31E / SA-PM31EB / SA-PM31EG
10 Information on Disc and MP3
12
SA-PM31E / SA-PM31EB / SA-PM31EG
11 Assembling and Disassembling
“ATTENTION SERVICER”
Some chassis components may be have sharp edges. Be careful when disassembly 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.
Warning:
This product uses a laser diode. Refer to “Precaution of Laser Diode”.
ACHTUNG:
Die Lasereinheit nicht zerlegen.
Die Lasereinheit darf nur gegen eine vom Hertsteller spezifizierte Einheit ausgetauscht werden.
11.1. 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 below.
13
SA-PM31E / SA-PM31EB / SA-PM31EG
11.2.Disassembly of Side Panel L & R
Step 1 : Remove 5 screws. Step 2 : Remove 1 screw.
Step 3 : Remove the side panel as arrow shown (Be careful of the catches).
Step 4 : Remove 5 screws. Step 5 : Remove 1 screw.
Step 6 : Remove the side panel as arrow shown (Be careful of the catches).
11.3.Disassembly of Top Cabinet Unit
· Follow the (Step 1) - (Step 6) of Item 11.2.
Step 1 : Remove 1 screw.
Step 2 : Lift up the top cabinet as arrow shown (Be careful of the catches).
Step 3 : Place the top cabinet as shown and detach connector CN1305.
11.4.Disassembly of Deck P.C.B. and Tape Eject P.C.B.
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
14
SA-PM31E / SA-PM31EB / SA-PM31EG
Step 1 : Remove 1 screw.
Step 2 : Release the clutch.
Step 3 : Remove 4 screws.
Step 4 : Push the lever as arrow shown to open the cassette lid and remove the Deck Mechanism Unit.
11.5.Disassembly of Front Panel Unit
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
Step 1 : Detach the connector CN308.
Step 2 : Detach the connector CN505.
15
SA-PM31E / SA-PM31EB / SA-PM31EG
Step 3 : Release 2 catches.
Step 4 : Release the catch at the bottom cabinet and remove the front panel unit as arrows shown.
Step 2 : Release 2 clutches and remove both Function P.C.B. and Power-In P.C.B.
· Disassembly of Main Control P.C.B.
Step 3 : Remove 2 screws to remove the shield plate.
Step 4 : Remove 2 screws and flip the Main Control P.C.B. as arrow shown.
11.6.Disassembly of Main Control P.C.B., Function P.C.B. and Power-In P.C.B.
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.5.
·Disassembly of Function P.C.B. and Power-In P.C.B.
Step 5 : Detach the connector CN603A.
11.7. Disassembly of Panel P.C.B.
· Follow the (Step 1) - (Step 6) of Item 11.2.
· Follow the (Step 1) - (Step 3) of Item 11.3.
· Follow the (Step 1) - (Step 4) of Item 11.5.
· Follow the (Step 1) - (Step 5) of Item 11.6.
Step 1 : Remove 5 screws.
16
SA-PM31E / SA-PM31EB / SA-PM31EG
Step 1 : Remove the volume knob.
Step 2 : Remove 7 screws.
Step 3 : Release 3 clutches and remove the Panel P.C.B. as arrow shown.
11.8. Disassembly of Rear Cabinet
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
Step 1 : Detach the connector CN303.
Step 2 : Remove 9 screws.
Step 3: Remove the rear cabinet as arrows shown (Be careful of the catches).
11.9. Disassembly of Main P.C.B.
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 3) of Item 11.8.
17
SA-PM31E / SA-PM31EB / SA-PM31EG
Step 1 : Detach connectors CN308, CN305 and CN306 .
Step 2 : Detach the connectors CN304 (pull the catch as arrow shown), CN301 and CN302 and pull out the Main P.C.B as arrow shown.
11.10.Disassembly of Transformer P.C.B.
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 3) of Item 11.8.
Step 1 : Detach the connectors CN505 and CN506.
Step 2 : Remove 4 screws and pull out the Transformer P.C.B. as arrow shown.
11.11. Disassembly of Tuner Pack
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 3) of Item 11.8.
18
Step 1 : Detach the connector CN101 and remove the tuner pack as arrow shown.
11.12. Disassembly of Power P.C.B
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.5.
·Follow the (Step 1) - (Step 3) of Item 11.8.
·Follow the (Step 1) - (Step 2) of Item 11.9.
·Follow the (Step 1) - (Step 2) of Item 11.10.
Step 1 : Remove 4 screws.
Step 2 : Remove the Power P.C.B. as arrow shown (be careful of the catch).
11.13.Disassembly of CR16 Mechanism
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.5.
SA-PM31E / SA-PM31EB / SA-PM31EG
Step 1 : Remove 2 screws.
Step 2 : Detach the connectors CN305 and CN306.
Step 3 : Remove the tape which used to secure the FFC connectors.
19
SA-PM31E / SA-PM31EB / SA-PM31EG
Step 4 : Release the catches and remove the middle block as arrow shown.
Step 5 : Remove 2 screws and remove the CD Mechanism Unit from the bottom chassis.
Step 1 : Remove 2 screws and the 2 CD lid supports.
Step 2 : Push the spring as arrow shown.
11.14. Replacement of CD Lid
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.5.
20
Step 3 : Remove the CD lid as arrow shown.
11.15. Replacement of Cassette Lid
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.4.
Step 1 : Remove 1 screw and the damper gear.
Step 2 : Remove the cassette open spring as arrows shown in order.
SA-PM31E / SA-PM31EB / SA-PM31EG
Step 3 : Pull both sides’ cassette holders to the direction of the arrows shown.
Step 4 : Remove the cassette lid as arrow shown.
21
SA-PM31E / SA-PM31EB / SA-PM31EG
11.16. Replacement of the Power IC and Transistors.
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 3) of Item 11.8.
·Follow the (Step 1) - (Step 2) of Item 11.9.
·Follow the (Step 1) - (Step 2) of Item 11.10.
·Follow the (Step 1) - (Step 2) of Item 11.12.
Step 1 : Remove 2 screws.
Step 2 : Remove 2 screws.
Step 3 : Unsolder the Power IC500.
Step 4 : Unsolder the Transistors Q501 and Q502.
22
SA-PM31E / SA-PM31EB / SA-PM31EG
11.17.Procedure for Replacing Pinch Roller and Head Block (Cassette Mechanism Unit)
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.4.
11.18.Procedure for Replacing Motor, Capstan Belt A, Capstan Belt B, and Winding Belt (Cassette Mechanism Unit)
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.4.
·Follow the (Step 1) - (Step 4) of Item 11.17.
23
SA-PM31E / SA-PM31EB / SA-PM31EG
24
SA-PM31E / SA-PM31EB / SA-PM31EG
11.19. Procedure for Replacing Parts on Mechanism PCB
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.4.
·Follow the (Step 1) - (Step 5) of Item 11.17.
11.20. Replacement of CD traverse deck
· Follow the (Step 1) - (Step 6) of Item 11.2.
25
SA-PM31E / SA-PM31EB / SA-PM31EG
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.5.
·Follow the (Step 1) - (Step 5) of Item 11.13.
26
SA-PM31E / SA-PM31EB / SA-PM31EG
11.21. Replacement of optical pickup unit (CD mechanism)
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.5.
·Follow the (Step 1) - (Step 5) of Item 11.13.
·Follow the (Step 1) - (Step 2) of Item 11.20.
27
SA-PM31E / SA-PM31EB / SA-PM31EG
11.22. Replacement of a traverse gear A and a traverse gear B
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.5.
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SA-PM31E / SA-PM31EB / SA-PM31EG
·Follow the (Step 1) - (Step 5) of Item 11.13.
·Follow the (Step 1) - (Step 2) of Item 11.20.
·Follow the (Step 1) - (Step 12) of Item 11.21.
11.23. Procedure for removing CD loading mechanism
1.Turn off by pressing power SW in the body.
2.Unplug AC power cord after the indication of [GOOD-BYE], then disassemble the body.
3.Disassemble the body, and take out CD loading mechanism.
4.Perform disassembly according to the following procedure for disassembly.
11.24. CR16 mechanism disassembly procedure
11.24.1. Gear for servicing information
·This unit has a gear which used for checking items (open/close of disc tray, up/down operation of traverse unit by manually) when servicing. (For gear information, that is described on the items for disassembly procedures.)
·For preparation of gear (for servicing), perform the procedures as follows.
·In case of re-servicing the same set, the “ gear for servicing”
may be took off because it had been used. So, the “gear for servicing” must be stored.
1.Remove the gear attached to top cover of CD loading mechanism.
29
SA-PM31E / SA-PM31EB / SA-PM31EG
2. Insert the hexgonal wrench (2.5mm) into the gear.
11.24.2. Replacement for the disc tray
·Follow the (Step 1) - (Step 6) of Item 11.2.
·Follow the (Step 1) - (Step 3) of Item 11.3.
·Follow the (Step 1) - (Step 4) of Item 11.5.
·Follow the (Step 1) - (Step 5) of Item 11.13.
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