Panasonic SAPM-31-P, SAPM-31-PC Service manual

A

CD Stereo System

SA-PM31P
SA-PM31PC

Colour

(S)... Silver Type

ORDER NO. MD0412578C1

A6

Specification

n Amplifier Section

Power output

10% Total harmonic distortion

60 Hz - 3 kHz, both channels driven

(Low channel) 35 W per channel (6 Ω)

3 kHz - 16 kHz, both channels driven

(High channel) 35 W per channel (6 Ω)

Total Bi-Amp power 70 W per channel

Power output

10% Total harmonic distortion

1 kHz, both channels driven

(Low channel) 40 W per channel (6 Ω)

8 kHz, both channels driven

(High channel) 40 W per channel (6 Ω)

Total Bi-Amp power 80 W per channel

Output Impedance

Headphone 16 Ω -32Ω

n FM Tuner Section

Frequency range 87.5 MHz - 108.0 MHz

(100 kHz steps)

87.9 MHz - 107.9 MHz
(200 kHz steps)

Sensitivity 1.02 µV (IHF)

S/N 26 dB 1.00 µV

ntenna terminal(s) 75 Ω (unbalanced)

n AM Tuner Section

Frequency range 520 kHz - 1710 kHz (10 kHz

steps)

Sensitivity

S/N 20 dB (at 1000 kHz) 900 µV/m

n Cassette Deck Section

Track system 4 track, 2 channel

Heads

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)

NORMAL (TYPE I) 35 Hz - 14 kHz

S/N RATIO 42.64 dB (A weighted)

Wow and flutter 0.08% (WRMS)

Fast forward and rewind time Approx. 120 seconds with C-60

cassette tape

n CD Section

Disc

© 2004 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

SA-PM31P / SA-PM31PC

CD, CD-R, CD-RW, MP3 8 cm/12 cm (3-3/20” / 4-

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 8fs

D/A converter MASH (1 bit DAC)

MP3

Bit rate 32 kbps - 320 kbps

Sampling frequency 32kHz, 44.1kHz, 48kHz

n General

Power supply AC 120 V, 60 Hz

73/100”)

Power consumption 135 W

Dimensions (W x H x D) 175 x 254 x 390.7 mm

(6-89/100” x 10” x 15-19/50”)

Mass 5.44 kg (11.99 lbs.)

Power consumption in standby mode: 0.4 W

n System: SC-PM31P-S

n System: SC-PM31PC-S

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.

Music Center: SA-PM31P-S

Speaker: SB-PM31P-SJ

Music Center: SA-PM31PC-S

Speaker: SB-PM31P-SJ

CONTENTS

Page Page

1 Safety Cautions

1.1. GENERAL GUIDELINES

2 Before Repair and Adjustment

3 Protection Circuitry

4 Handling the Lead-free Solder

4.1. About lead free solder (PbF)

5 Precaution of Laser Diode

6 Handling Precautions For Traverse Deck

7 Accessories

8 Operating Procedures

9 Assembling and Disassembling

9.1. Disassembly flow chart

9.2. Disassembly of Side Panel L & R

9.3. Disassembly of Top Cabinet Unit

9.4. Disassembly of Deck P.C.B. and Tape Eject P.C.B.

9.5. Disassembly of Front Panel Assembly

9.6. Disassembly of Main Control P.C.B., Function P.C.B. and

Power-In P.C.B.

9.7. Disassembly of Panel P.C.B.

9.8. Disassembly of Rear Panel

9.9. Disassembly of Main P.C.B.

9.10. Disassembly of Transforme r P.C.B.

9.11. Disassembly of Tuner Pack

9.12. Disassembly of Power P.C.B

9.13. Disassembly of CR16 Mechanism

9.14. Replacement of CD Lid

9.15. Replacement of Cassette Lid

9.16. Replacement of the Power IC and Transistors.

4

4

5

5

5

5

6

7

8

9

11

11

12

12

12

13

14

14

15

15

16

16

17

17

18

19

20

9.17. Procedure for Replacing Pinch Roller and Head Block

(Cassette Mechanism Unit)

9.18. Procedure for Replacing Motor, Capstan Belt A, Capstan

Belt B, and Winding Belt (Cassette Mechanism Unit)

9.19. Procedure for Replacing Parts on Mechanism PCB

9.20. Replacement of CD traverse deck

9.21. Replacement of optical pickup unit (CD mechanism)

9.22. Replacement of a traverse gear A and a traverse gear B

9.23. Procedure for removing CD loading mechanism

9.24. CR16 mechanism disassembly procedure

9.25. CR16 MECHANISM ASSEMBLY PROCEDURE

9.26. Disassembly of traverse mechanism

9.27. Handling of Cassette Tape jam

10 Service Positions

10.1. Checking procedure

10.2. Checking the major P.C.B.

11 Self-Diagnostic Display Function

11.1. Entering into Self-Diagnostic Mode

11.2. Clearing Self-Diagnostic Memory

11.3. Displaying Self-Diagnostic Results

11.4. Error Code Table

11.5. Cassette Mechanism Self-Diagnostic Mode

11.6. Changer Reliability Test Mode

11.7. Changer Operation Checking

11.8. CR16 Mechanism Ageing Mode

12 Procedure for Checking Operation of Individual Parts of

Cassette Mechanism Unit

12.1. Operation Check with Cassette Tape

2

21

21

23

23

25

26

27

27

34

46

47

48

48

48

49

49

51

51

52

52

53

53

54

55

55

12.2. Operation Check without Cassette Tape 55

13 Measurement And Adjustments

13.1. Tuner/CD Sections

13.2. Cassette Deck Section

14 Voltage Measurement and Waveform Chart

14.1. Waveform

15 Block Diagram

15.1. CD Servo Block

15.2. Main Block

16 Notes of Schematic Diagram

17 Schematic Diagram

17.1. CD Servo Circuit

17.2. Main Circuit

17.3. Main Control Circuit, Panel Circuit, Power-In Circuit and

Function Circuit

17.4. Deck Circuit, Deck Mechanism Circuit and Tape Eject

Circuit

17.5. Power Circuit

17.6. Transformer Circuit

17.7. CD Loading Circuit

18 Printed Circuit Board

18.1. CD Servo P.C.B.

18.2. Main P.C.B.

18.3. Main Control P.C.B. and Panel P.C.B.

57

57

57

59

62

63

63

65

70

71

71

73

18.4. Power In P.C.B., Function P.C.B. and Deck Mechanism

P.C.B.

18.5. Deck P.C.B. and Tape Eject P.C.B.

18.6. CD Loading P.C.B.

18.7. Power P.C.B.

18.8. Transformer P.C.B.

19 Wiring Connection Diagram
20 Illustration of IC 痴, Transistors and Diodes
21 Terminal Function of ICｴs

21.1. IC702 (MN6627953HB) Servo processor/ Digital signal

processor/ Digital filter/ D/A converter

21.2. IC703 (BA5948FP E2) IC 4CH DRIVE

21.3. IC302 (C2CBJG000574) MICRO PROCESSOR

22 Troubleshooting Flowchart (CD Section Circuit)

77

23 Parts Location and Replacement Parts List

79

81

84

85

86

86

23.1. Deck Mechanism

23.2. CD Loading Mechanism

23.3. Cabinet

23.4. Electrical Part List

23.5. Packaging Materials & Accessories Parts List

23.6. Packaging

87

SA-PM31P / SA-PM31PC

89

90

91

92

93

94

95

97

98

98

98

99

101

103

104

106

111

114

122

122

3

SA-PM31P / SA-PM31PC

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.

(This “Safety Precaution” is applied only in U.S.A.)

1. Before servicing, unplug the power cord to prevent an electric shock.

2. When replacing parts, use only manufacturer’s recommended components for safety.

3. Check the condition of the power cord. Replace if wear or damage is evident.

4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

5. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to prevent the
customer from being exposed to a shock hazard.

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 1MΩand 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.

1.1.3. CAUTION FOR FUSE REPLACEMENT

4

SA-PM31P / SA-PM31PC

2 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 120V, 60 Hz in NO SIGNAL mode (volume min) should be ~300 mA.

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 Handling the Lead-free Solder

4.1. 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).

· W hen soldering or unsoldering, please comple tely 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-PM31P / SA-PM31PC

5 Precaution of Laser Diode

CAUTION:

This unit utilizes a class 1 laser.

Invisible laser radiation is emitted from the optical pickup lens.

When the unit is turned on:

1. Do not look directly into the pick up lens.

2. Do not use optical instruments to look at the pick up lens.

3. Do not adjust the preset variable resistor on the pickup lens.

4. Do not disassemble the optical pick up unit.

5. If the optical pick up is replaced, use the manufacturer’s specified replacement pick up only.

6. Use of control or adjustments or performance of procedures other than those specified herein may result in hazardous radiation
exposure.

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 label (Except for U.S.A.)

6

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).

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.

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.

SA-PM31P / SA-PM31PC

Fig 2

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).

7

SA-PM31P / SA-PM31PC

7 Accessories

Note : Refer to Packaging Materials & Accessories for the part number.

AC power cord

FM indoor antenna

AM loop antenna

Remote control

8

8 Operating Procedures

SA-PM31P / SA-PM31PC

9

SA-PM31P / SA-PM31PC

10

SA-PM31P / SA-PM31PC

9 Assembling and Disassembling

“ATTENTION SERVICER”

Some chassis components may be have sharp edges. Be careful when disassembling 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”.

9.1. 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.

11

SA-PM31P / SA-PM31PC

9.2. 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 1 : Remove 1 screw.

Step 2 : Lift up the top Cabinet 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).

9.3. Disassembly of Top Cabinet
Unit

· Follow the (Step 1) - (Step 6) of Item 9.2.

Step 3 : Place the top cabinet as shown and detach the
connector CN1305.

9.4. Disassembly of Deck P.C.B.
and Tape Eject P.C.B.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

12

SA-PM31P / SA-PM31PC

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.

Step 1 : Detach the connector CN308.

Step 2 : Detach the connector CN505.

9.5. Disassembly of Front Panel
Assembly

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

13

SA-PM31P / SA-PM31PC

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 : Release 2 catches and remove the front panel as
arrows shown.

Step 4 : Release the catch at the bottom cabinet as shown.

9.6. 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 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Disassembly of Function P.C.B. and Power-In 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.

Step 5 : Detach the connector CN603A.

Step 1 : Remove 5 screws.

9.7. Disassembly of Panel P.C.B.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 5) of Item 9.6.

14

SA-PM31P / SA-PM31PC

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.

Step 1 : Detach the connector CN303.

Step 2 : Remove 9 screws.

Step 3: Remove the rear panel as arrows shown (Be careful of
the catches).

9.9. Disassembly of Main P.C.B.

9.8. Disassembly of Rear Panel

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 3) of Item 9.8.

15

SA-PM31P / SA-PM31PC

Step 1 : Detach the connectors CN308, CN305 and CN306 .

Step 1 : Detach the connectors CN505 and CN506.

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.

9.10. Disassembly of Transformer
P.C.B.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 3) of Item 9.8.

Step 2 : Remove 4 screws and pull out the Transformer P.C.B.
as arrow shown.

9.11. Disassembly of Tuner Pack

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 3) of Item 9.8.

16

Step 1 : Detach the connector CN101 and remove the tuner
pack as arrow shown.

9.12. Disassembly of Power P.C.B

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) - (Step 2) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.10.

SA-PM31P / SA-PM31PC

Step 1 : Remove 2 screws.

Step 1 : Remove 4 screws.

Step 2 : Remove the Power P.C.B. as arrow shown (be careful
of the catch).

9.13. Disassembly of CR16
Mechanism

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

Step 2 : Detach the connectors CN305 and CN306.

Step 3 : Remove the tape which used to secure the FFC
connectors.

17

SA-PM31P / SA-PM31PC

Step 4 : Release the catches and remove the middle block as
arrow shown.

Step 1 : Remove 2 screws and the 2 CD lid supports.

Step 5 : Remove 2 screws and remove the CD Mechanism Unit
from the bottom chassis.

9.14. Replacement of CD Lid

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

Step 2 : Push the spring as arrow shown.

18

Step 3 : Remove the CD lid as arrow shown.

9.15. Replacement of Cassette Lid

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.4.

SA-PM31P / SA-PM31PC

Step 1 : Remove 1 screw and the damper gear.

Step 2 : Remove the cassette open spring as arrows shown in
order.

Step 3 : Pull both sides’ cassette holders to the direction of the
arrows shown.

Step 4 : Remove the cassette lid as arrow shown.

19

SA-PM31P / SA-PM31PC

9.16. Replacement of the Power IC and Transistors.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) - (Step 2) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.10.

· Follow the (Step 1) - (Step 2) of Item 9.12.

Step 1 : Remove 2 screws.

Step 2 : Remove 2 screws.

Step 3 : Unsolder the Power IC500.

Step 4 : Unsolder the Transistors Q501 and Q502.

20

9.17. Procedure for Replacing Pinch Roller and Head Block (Cassette
Mechanism Unit)

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.4.

SA-PM31P / SA-PM31PC

9.18. Procedure for Replacing Motor, Capstan Belt A, Capstan Belt B, and
Winding Belt (Cassette Mechanism Unit)

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 1) - (Step 5) of Item 9.17.

21

SA-PM31P / SA-PM31PC

22

SA-PM31P / SA-PM31PC

9.19. Procedure for Replacing Parts on Mechanism PCB

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 1) - (Step 5) of Item 9.17.

9.20. Replacement of CD traverse deck

· Follow the (Step 1) - (Step 6) of Item 9.2.

23

SA-PM31P / SA-PM31PC

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 5) of Item 9.13.

24

9.21. Replacement of optical pickup unit (CD mechanism)

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 5) of Item 9.13.

· Follow the (Step 1) - (Step 2) of Item 9.20.

SA-PM31P / SA-PM31PC

25

SA-PM31P / SA-PM31PC

9.22. Replacement of a traverse gear A and a traverse gear B

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

26

· Follow the (Step 1) - (Step 5) of Item 9.13.

· Follow the (Step 1) - (Step 2) of Item 9.20.

· Follow the (Step 1) - (Step 12) of Item 9.21.

SA-PM31P / SA-PM31PC

9.23. 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.

9.24. CR16 mechanism disassembly procedure

9.24.1. 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 becaus e it had been used. So, the “gear for
servicing” must be stored.

1. Remove the gear attached to top cover of CD loading
mechanism.

27

SA-PM31P / SA-PM31PC

2. Insert the hexgonal wrench (2.5mm) into the gear.

9.24.2. Replacement for the disc tray

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 5) of Item 9.13.

28

SA-PM31P / SA-PM31PC

29

SA-PM31P / SA-PM31PC

9.24.3. Replacement for the traverse deck

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 5) of Item 9.13.

· Follow the (Step 1) - (Step 10) of item 9.24.2.

30

9.24.4. Disassembly for CD loading unit

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 5) of Item 9.13.

· Follow the (Step 1) - (Step 10) of item 9.24.2.

· Follow the (Step 1) - (Step 4) of item 9.24.3.

SA-PM31P / SA-PM31PC

31

SA-PM31P / SA-PM31PC

32

SA-PM31P / SA-PM31PC

33

SA-PM31P / SA-PM31PC

9.25. CR16 MECHANISM ASSEMBLY
PROCEDURE

The following specified greases and/or oil must be applied
when some specific parts are changed.

1. Floil grease (VFK1298) : The floil grease must be
applied to tray, tray (L) and tray (R).

2. Hanarl oil (VFK1700) : The hanarl oil must be applied to
any parts with grease other than the said parts.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of item 9.3.

· Follow the (Step 1) - (Step 4) of item 9.5.

· Follow the (Step 1) - (Step 5) of Item 9.13.

· Follow the (Step 1) - (Step 10) of item 9.24.2.

· Follow the (Step 1) - (Step 4) of item 9.24.3.

· Follow the (Step 1) - (Step 22) of item 9.24.4.

34

SA-PM31P / SA-PM31PC

35

SA-PM31P / SA-PM31PC

36

SA-PM31P / SA-PM31PC

37

SA-PM31P / SA-PM31PC

38

SA-PM31P / SA-PM31PC

39

SA-PM31P / SA-PM31PC

40

SA-PM31P / SA-PM31PC

41

SA-PM31P / SA-PM31PC

42

SA-PM31P / SA-PM31PC

43

SA-PM31P / SA-PM31PC

44

SA-PM31P / SA-PM31PC

45

SA-PM31P / SA-PM31PC

9.26. Disassembly of traverse mechanism

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 5) of Item 9.13.

· Follow the (Step 1) - (Step 2) of Item 9.20.

46

SA-PM31P / SA-PM31PC

Step 1 : If the cassette tape cannot eject due to twinning

around capstan or pinch roller during play or record, rotate the
flywheel F as arrow shown to remove twined tape.

9.27. Handling of Cassette Tape jam

· Follow the (Step 1) - (Step 6) of Item 8.2.

Step 2 : Push the lever as arrow shown to open the cassette lid
and remove the cassette tape.

47

SA-PM31P / SA-PM31PC

10 Service Positions

10.1. Checking procedure

Note : For the disassembling procedure, see the section 9.

10.2. Checking the major P.C.B.

1. Disassembly of Side Panel L & R

2. Disassembly of Top Cabinet

3. Disassembly of Deck P.C.B. and Tape Eject P.C.B.

4. Disassembly of Front Panel

5. Disassembly of Main Control P.C.B., Function P.C.B. and Power-In P.C.B.

6. Disassembly of Panel P.C.B.

7. Disassembly of Rear Panel P.C.B.

8. Disassembly of Main P.C.B.

9. Disassembly of Transformer P.C.B.

10. Disassembly of Tuner Pack.

11. Disassembly of Power P.C.B.

12. Disassembly of CR16 Mechanism

48

11 Self-Diagnostic Display Function

This unit is equipped with a self-diagnostic display function, which will be useful during servicing and maintenance.

· Refer to the next page for display symbols, symptoms, etc.

11.1. Entering into Self-Diagnostic Mode

11.1.1. Setting of the Self-Diagnostic Mode (Test Mode)

No. Operation Procedure Operation and Processing of Microcomputer

1 Switch the SELECTOR to TAPE . There should be NO

cassettes loaded.

2 Press the [STOPn/-DEMO] key for 2 sec and press

/FF/ ] for another 2 sec, it shall enter into the self-

[
diagnostic mode.

[T ] shall be displayed in the FL.

SA-PM31P / SA-PM31PC

· If the DECK is loaded with cassette ( HALF SW = ON ), executing the procedure in 2, it shall not enter into C-mecha Abnormal

Detection Mode.

Note 1: Deck 1 (PLAY only deck) is not tested.

Note 2: REC INH SW OFF : without erase prevention tab

REC INH SW ON : with erase prevention tab

· The abnormalities content shall be kept as long as the micon memory is backup.

· When the micon is reset, if RAM check error, all abnormalities content in the memory shall be cleared when RAM is initializ ed.

· During self-diagnostic mode, DECK displays can be switched even when there is no cassette loaded. DECK checking shall still

be possible even if HALF SW is abnormal and detect as “NO TAPE”.

· Above mentioned tests shall not be limited by the frequencies and sequence. Operating the same key for the same test again

is possible.

11.1.2. Setting of Self-Diagnostic (Doctor Mode)

a) Turn on power for unit.

b) Select CD Mode. Ensure no disc is inserted in the unit.

c) Press and hold [STOP n/-DEMO] button for at least 2 seconds, follow by [4] and [7] on remote control. In the case where there
is EEPRO M, then, the display should be as below:

This display shall be there for for 1sec. After display the EEPROM information for 1sec, the display shall return to the normal Doctor
Mode display.

49

SA-PM31P / SA-PM31PC

d) Power down to exit by pressing [ POWER] button on the main unit.

e) The CLEAR key on the remote controller when used in any test items mode shall end the current test, operations and exit Doctor
Mode.

11.1.3. Check Sum Display of EEPROM

· The check sum of EEPRO M; It display s it.

· W hen the operation which enters the doctor mode in the doctor mode is done, version No. of EEPROM; It is (DEC display ) and

a check sum (HEX display ).

1. Doctor mode ON.

2. pressing "C2DF"

The following are display ed

CHECKSUM [CHK-EA]

Note: Version/check sum displays ´. . . . . . CHK-NO´ when display when judged that there is EEPROM, and judged it not is.

· It returns to the doctor mode display of usually by the operation which enters the doctor mode of usually by the operation which

enters the doctor mode again with the check sum displayed. (The display does not return by the time limitation)

11.1.4. Cold start setting

1. Doctor mode ON.

2. Press [4] button on the remote control.

· Data shall be set in order to make a cold start (backup data are initialized) when reset starts next time.

To clarify that the code was accepted at this time, the pattern below is display ed in the LCD for 2 seconds.

50

SA-PM31P / SA-PM31PC

(Note) In the case that you unplug from AC outlet after this mode was set, then plug to AC again, a cold start shall begin.
And “- - - - - - - - -” is display ed in the FL for 2 seconds.

11.2. Clearing Self-Diagnostic Memory

<CD Section> (F15, F17, F22, F26, F27, F28, F29)

1. Enter into self-diagnostic mode.

2. Errors are stored in the unit memory. To clear memory, press and hold down "STOP n/-DEMO” button for 5 seconds or more
during self-diagnostic mode. The message, “CLEAR” appears on the display when memory is erased, and the unit displays the
message, “T”.

Memory is not affecte d by turning off the power or unplugging the socket.

Be sure to clear memory after repair is comple ted.

3. Press "STOP n/-DEMO” button. A symbol of self-diagnostic is indicated on the display if an error is found. If several errors are
found, a respective indication is displayed when "STOP n/-DEMO" button is pressing repeatedly. (e.g. H01 → CD F15 → F01)
If no error is found, only "T " indication is displayed and remains unchange even if "STOPn/-DEMO" button is pressed.

11.3. Displaying Self-Diagnostic Results

<Cassette Deck Section> (H01, H02, H03, F01, F02)

1. Enter the self-diagnostic mode, following the instructions described in [11.1.1 Setting of the Self-Diagnostic Mode (Test Mode)].

2. Insert a normal-positioned music tape with erase prevention niches on both Sides A and B. Press [TAPE
the TPS operation so that the tape automatically stops at an interval between music selections.

3. Press [STOP n/-DEMO] and [TAPE

4. Then, insert a Cr02-positioned blank cassette tape with an erase prevention niche of Side A or B set to the left side.

5. Press [

6. Remove the cassette tape, and set the other side.

7. Press [

8. Press [STOP n/-DEMO] button on the unit.

If an error is found, a self-diagnostic key appears on the display.

If several errors are found, the display shows these keys when [STOPn/-DEMO] button is pressed repeatedly. (Ex.: H01 - H02

- F01 - H01)

If no error is found, only the message, “T” appears on the display.

(*1) TPS operation (music search) detects the blank sections between music selections. Therefore, do not use tapes with the
following conditions:

· A blank section that lasts only 4 seconds or less.

· No blank sections (recording through microphones, etc.).

· Music selections that have extremely low pitches or prolonged silent sections (such as classical music).

· and/or Music recorded with fade in/out effect.

/FF/ ] button. The tape will be forwarded and automatically stop after two seconds.

/REW/ ] button. The tape will be rewound and automatically stops after two seconds.

] buttons together on the remote controller. (Recording does not start.)

] button to activate

51

SA-PM31P / SA-PM31PC

11.4. Error Code Table

11.4.1. Error code for Power Supply

Error Code Abnormal Items Possible Cause

F61 POWER AMP output

abnormal

11.4.2. Error codes for CD Mechanism

Error Code Abnormal Items Possible Cause

F15 CD REST SW abnormal CD traverse position intial setting operation failsafe counter (1000 ms) waiting for REST SW to

F26 CD servo LSI command

signal abnormal

F28 DISC LOAD abnormal While going to play position, if failsafe counter is finished and switch o change or switch

F29 DISC unload abnormal While going to play position, if failsafe counter is finished and switch no change or switch

F27 Slide operation abnormal During vertical operation, if failsafe timer is finished and switch no change or switch target

F17 Down SW abnormal During vertical operation going to the bottom position, if failsafe timer is finished and switch

F22 Loading Mode / Mecha

abnormal

During normal operation, if either DCDET1 or DCDET2 becomes L, normal POWER OFF
process shall not be executed, PCNT shall be switched to L immediately. GOODBYE shall not
display and the error display F61 is displayed instead. 2 seconds after the F61 display, ECONO
shall be set to ´L´ and LCD display shall be turned off. The error content shall be memorised
when the abnormality occurs and can be display in the C-mecha self-diagnostic mode described
later.

turn on. Error No. shall be clear by force or during coldstart.
CD function DTMS command, after system setting, If SENSE = ‘L’ cannot be detected.

Memory shall contain F26 code. After Power on, CD function shall continue, error shall occur
“NO DISC”.
Error No. shall be clear by force or coldstart.

target condition was not achieve, this error shall be memorized . Next time mechanism
operates, it shall do coldstart.
Error No. shall be clear by force or coldstart.

target condition was not achieve, this error shall be memorized . Next time mechanism
operates, it shall do coldstart.
Error No. shall be clear by force or coldstart.

condition was not achieve, this error shall be memorized. Next time mechanism operates, it
shall do coldstart.Error No. shall be clear by force or coldstart.

no change or switch target condition was not achieve, this error shall be memorized. The
Next time mechanism operates, it shall do mechanism initialization.Error No. shall be clear by
force or coldstart.

During mecha initialization, Loading mode mechanism abnormal, normal operation cannot be
achieve. The next time mechanism operates, it shall do mechanism initialization.Error No.
shall be clear by force or coldstart.

11.4.3. Error codes for Cassette Mechanism

Error Code Abnormal Items Possible Cause

H01 MODE SW abnormal Normal operation during mecha transition, MODE SW abnormal is memorised. The content

H02 REC INH SW abnormal
H03 HALF SW abnormal
F01 Reel pulse abnormal
F02 TPS abnormal

of abnormality can be confirmed in the abnormal detection mode explained in the later
section.

The content of abnormality can be confirmed in the abnormal detection mode explained in
the later section.

11.5. Cassette Mechanism Self-Diagnostic Mode

1. A Cr02-positioned blank cassette tape with an erase prevention niche on either Side A or B.

2. A normal-positioned music tape with erase prevention niches on both Sides A and B. Both tapes are halfway forwarded in
advance.

3. The remote controller that comes with this unit.

No. Operation Procedures Micon operation & processing

1 C-mecha Abnormal Detection shall be

executed for DECK 1 only.

2 [ ] key is pressed, after loading in a

NORMAL type cassette with the recording tab
on the left side removed.

3 [ ] key is pressed, after loading a NORMAL,

CrO2, METAL type cassette with the recording
tab on the right side removed.

Check that all DECK mechanism leaf SW are in OFF state.

FF shall be executed for 2 sec, afterwhich STOP.
Check the following.
{ F.REC INH SW } is OFF
{ R.REC INH SW } is ON
{ HALF SW } is ON
Reel pulse toggles between H & L.

REW shall be executed for 2 sec, afterwhich STOP.
Check the following.
{ F.REC INH SW } is ON
{ R.REC INH SW } is OFF
{ HALF SW } is ON
Reel pulse toggles between H & L.

52

SA-PM31P / SA-PM31PC

No. Operation Procedures Micon operation & processing

4 [TAPE ] Key is pressed, after loading in a

NORMAL, CrO2, METAL type cassette (
cassette for TPS checking purposes and with
both recording tabs intact ).

5 [REC] key is pressed, after loading in a

NORMAL type cassette ( with both recording
tabs intact )

6 Self-diagnostic mode is stopped by pressing

the [Clear n] Key.

7 To clear all the abnormalities in the memory,

press the [Clear n] Key for more than 5 Sec
while the self-diagnostic mode is stopped.

8 To cancel the self-diagnostic mode press the

[POWER] Key.

TPS operation is executed. Check the following.
{ F.REC INH SW } is ON
{ R.REC INH SW } is ON
{ HALF SW } is ON
TPS signal changes.
After checking TPS, it shall STOP.
If TPS checking is completed at TAPE END, it is considered as TPS
abnormal.

REC operation shall not be executed.
Check the following.
{ F.REC INH SW } is ON
{ R.REC INH SW } is ON
{ HALF SW } is ON

LCD shall display the abnormality item code, when the STOP key is pressed,
it shall display the abnormality item code in the following sequence.
[TH01][TH02][TH03]

At this time, all the abnormalities item in the memory is cleared and is
displayed on the LCD.[ C L E A R ] display for 1 Sec. then,[ T ] is displayed.

POWER is OFF.At the next POWER ON, normal operation shall be executed.

· If RAM check error occurs during microcomputer reset, COLDSTART shall be executed and all the error memory shall be

cleared during RAM initialization.

11.6. Changer Reliability Test Mode

1. Doctor mode ON.

2. Remocon 2 on

3. The flow below shall be done

* During aging test mode, stop key shall stop the operation

· During this series of operation, the numbe r of its operation shall be shown in the alphanumeric display repeatedly.

It shall start from [ _ _ 00001]

· It shall move up one counter when step 1~8 of the above operations end.

It shall display [ _ _ 00000] after [ _ _ 99999] has been reached.

· Press POWER key, tray return to PLAY position and then POWER is OFF.

During test mode, if mecha operation encounters abnormality or time over , retry operation shall be done but aging test mode shall
stop

11.7. Changer Operation Checking

1. Doctor mode ON.

2. press [DISC] key to ON

Current disc setting shall be tray 1

a. tray 1 load, tray 2 open then close

b. tray 1 load, tray 3 open then close

c. tray 1 load, tray 4 open then close

d. tray 1 load, tray 5 open then close

e. tray 1 load, while playing CD check mode 4 disc then close

f. tray 1 stop unload

g. CD check mode and then close

h. tray 1 load

i. after the above process, [CHNGR_OK] shall be displayed

· During this series of operation, the numbe r of its operation shall be shown in the alphanumeric display repeatedly.

It shall start from [ _ _ 00001]

· It shall move up one counter when step 1~8 of the above operations end.

It shall display [ _ _ 00000] after [ _ _ 99999] has been reached.

· Press POWER key, tray return to PLAY position and then POWER is OFF.

During test mode, if mecha operation encounters abnormality or time over , retry operation shall be done but aging test mode shall
stop

53

SA-PM31P / SA-PM31PC

11.8. CR16 Mechanism Ageing Mode

To enter into ageing mode:

1. Enter a Doctor mode.

2. Press [2] button on the remote control. It enters into ageing mode (See Fig. 11.8).

Ageing process:

1. Tray 1 open.

2. It waits for 1 second (Note: Do not put any disc into the tray).

3. Tray 1 close.

4. TOC READ (Reading incomplete).

5. Tray 2 open and repeat process 1 to 4. (Process repeat until Tray 5).

6. Tray check.

7. Whole process comple te (Counter on FL increase by 1).

Note: To exit ageing mode, press [

POWER] button. The unit will power down. Do not unplug the power cord until FL display

shows “GOODBYE”. This is to avoid tray jam problem.

Display Example: [00000T3OP] ...TRAY OPEN

[00000T3CL] ...TRAY CLOSE
[00000T3RE] ...TOC READING
[00000T3CH] ...TRAY CHANGING

54

SA-PM31P / SA-PM31PC

12 Procedure for Checking Operation of Individual Parts of

Cassette Mechanism Unit

12.1. Operation Check with Cassette Tape

1. Pull up the EJECT lever using a rubber band. (Cf. Fig. 6)

2. Supply DC5V to MOTOR. (→ MOTOR rotates.) (Cf. Fig. 5)

3. Insert a cassette tape to the unit.

4. Supply DC9V to the plunger, and turn the power ON and OFF. (→ Power +PL, -PL) (Cf. Fig. 5)

a. FWD PLAY: Supply the plunger power in a flash. (ON: approx. 5msec)

b. FWD FF: Supply the plunger power in a flash at PLAY mode. (ON: approx. 5msec)

c. STOP: Supply the plunger power in a flash at FWD FF mode. (ON: approx. 5msec)

d. REV PLAY: Supply the plunger power in a normal timing at STOP mode. (ON: approx. 200msec)

e. REV REW: Supply the plunger power in a flash at REV PLAY mode. (ON: approx. 50msec)

f. STOP: Supply the plunger power in a flash at FF mode. (ON: approx. 50msec)

Repeat the operation (→ FWD PLAY)

(Note) Other operation may start if a timing of supplying the plunger power is missed.

12.1.1. Connection Status between Mechanism and Power Supply (Motor, Plunger)

12.1.2. Operative Parts of Mechanism Unit (EJECT lever fitted with rubber band,
Plunger/Rib operation)

Fig. 6

12.2. Operation Check without Cassette Tape

1. Pull up the EJECT lever using a rubber band. (Cf. Fig. 6)

2. Supply DC5V to MOTOR. (→ MOTOR rotates.)

3. Lift up the mechanism unit’s plunger/rib with the tip of a negative screwdriver, and operate the unit in the same timing as

supplying the power. (Cf. Fig. 7)

55

SA-PM31P / SA-PM31PC

Fig. 7

56

13 Measurement And Adjustments

13.1. Tuner/CD Sections

No adjustment required.

13.2. Cassette Deck Section

13.2.1. Requirements

· Test tape (QZZCFM) (QZZCWAT)

· Normal blank cassette tape (QZZCRA)

· Frequency indicator

· Oscilloscope

· Electrical voltmeter

· Headphone jack output jig (Cf. Fig. 8)

13.2.2. Setting of Unit

· VOLUME: MAX

13.2.3. Preparations

1. Apply [9. Assembling and Disassembling].

2. Remove 4 screws from the mechanism unit to disassemble. [9. Assembling and Disassembling].

3. Connect the headphone jack output jig (Cf. Fig. 8) to headphone jack.

SA-PM31P / SA-PM31PC

Fig. 8

Fig. 9

13.2.4. Tape Speed Adjustment

· Normal speed adjustment (only during forward playback)

(Product reference value: 3,000±90Hz)

1. Connect a frequency indicator. (Cf. Fig. 12)

2. Playback the middle portion of the test tape (QZZCWAT).

3. Adjust the motor screw so that the following output level is produced. (Cf. Fig. 10)

Adjustment Range: 3,000 ± 90Hz (a constant speed)

57

SA-PM31P / SA-PM31PC

13.2.5. Bias Voltage Check

1. Connect an electrical voltmeter. (Cf. Fig. 9) (Cf. Fig. 12)

2. Set the function to “TAPE” position.

3. Insert a normal blank cassette tape (QZZCRA).

4. While pressing and holding down [REC (
pressing the buttons till the recording pause mode is activated.)

5. Check that the output level is within the standard range.

Standard Range: 13.5 ± 4mV

Fig. 10

Fig. 11

/ )] button, press [TAPE ( )] button to pause the recording mode. (Repeat

Fig. 12

13.2.6. Bias Frequency Check

1. Connect a digital frequency counter (Figure 13).

2. Set the function to “TAPE” position.

3. Insert a normal blank cassette tape (QZZCRA) and press “REC” mode on main unit.

4. Check that the output frequency is within the standard range.

Standard Value: 98 ±8 kHz

Fig. 13

58

14 Voltage Measurement and Waveform Chart

SA-PM31P / SA-PM31PC

CD SERVO P.C.B.

Ref No.

MODE 1234567891011121314151617181920

CD PLAY 2.1 1.9 0 3.3 1.7 1.8 1.8 1.8 1.8 2.0 2.0 2.4 0.2 1.7 1.7 1.7 1.7 1.7 1.7 1.6

STANDBY 00000000000000000000

Ref No.

MODE 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

CD PLAY 1.7 1.7 1.7 0 1.5 3.3 0 1.8 0 1.6 0 0 0 1.6 0 1.6 3.3 1.3 0 0

STANDBY 00000000000000000000

Ref No.

MODE 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

CD PLAY 3.2 3.3 000000.23.3- -03.3003.32.23.000

STANDBY 00000000000000000000

Ref No.

MODE 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

CD PLAY 3.3 0 3.3 0 3.3 0 1.5 3.0 1.2 0 1.5 3.3 1.4 1.4 0.8 1.6 1.6 0 1.4 1.8

STANDBY 00000000000000000000

Ref No.

MODE 1234567891011121314151617181920

CD PLAY 1.7 0 1.7 0000007.74.33.63.603.04.13.63.57.70

STANDBY 0000000000.30.20.20.100.20.20.20.20.40

Ref No.

MODE 21 22 23 24 25 26 27 28

CD PLAY 7.7 0 0 0 7.7 1.7 1.7 1.7

STANDBY 0.4 0 0 0 0.4 0 0 0

IC702

IC702

IC702

IC702

IC 703

IC 703

MAIN P.C.B.

Ref No.

MODE 1234567891011121314151617181920

CD PLAY 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.5 4.6 4.6 0 0 0 9.2 4.6 4.6 4.6 - 4.6

STANDBY 000000000000000.50.10.10.10.10.1

Ref No.

MODE 21 22 23 24

CD PLAY 4.6 - - 0.8

STANDBY 0.1 0 0 0

Ref No.

MODE 1234567891011121314151617181920

CD PLAY 5.1 5.1 5.1 5.1 5.1 0 5.0 0 0 1.1 1.3 5.0 2.4 0 2.3 5.0 5.0 5.0 3.3 0

STANDBY 5.0 000000001.11.35.00000.50000

Ref No.

MODE 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

CD PLAY 0 0 4.6 4.2 5.0 5.0 0 5.0 5.1 5.1 00000000

STANDBY 00000000000000000000

Ref No.

MODE 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

CD PLAY 0 5.0 5.0 0 0 0 5.1 0 5.0 0 0 5.1 0.2 5.1 5.0 5.0 5.2 5.0

STANDBY 00000000000000000000

Ref No.

MODE 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

CD PLAY 2.1 5.0 2.2 0 5.0 00000000000000.15.0

STANDBY 00000000000000000000

Ref No.

MODE 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

CD PLAY 0 5.1 0000002.32.30.45.13.55.15.102.35.1

STANDBY 00000000000000000000

Ref No.

MODE 12345678

CD PLAY 0 5.1 0 0 1.3 1.3 0 1.0

STANDBY 0 5.0 000000.4

Ref No.

MODE 12345

CD PLAY 4.8 0 4.8 0 3.3

STANDBY 0.4 0 0.4 0 0

IC300

IC300

IC302

IC302

00

IC302

0 5.0

IC302

IC302

5.0 0

IC303

IC305

59

SA-PM31P / SA-PM31PC

MAIN CONTROL P.C.B.

Ref No.

MODE 1234567891011121314151617181920

CD PLAY -30.4 -30.4 2.5 0 2.0 2.0 4.8 4.9 4.0 1.5 -28.0 -28.0 -28.0 -28.0 -28.0 -28.0 -28.0 -28.0 -28.0 -28.0

STANDBY -27.6 -27.6 0 0 0.2 0.2 0.4 0 0 0 -26.4 -26.5 -26.5 -26.5 -26.6 -26.6 -26.6 -26.6 -26.7 -26.7

Ref No.

MODE 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

CD PLAY -28.0 -28.0 - -28.0 - - - -30.4 -27.9 -27.9 - - -30.4 -30.4 -30.5 - - -

STANDBY -30.0 -26.8 -26.8 -26.9 -26.9 -27.0 -27.0 -27.1 -27.1 -27.1 -27.2 -27.2 -27.3 -27.3 -27.3 -27.4 -27.4 -27.5

IC 600

IC 600

-27.9 -27.9

-27.5 -27.5

DECK P.C.B

Ref No.

MODE 12345

CD PLAY 6.0 0000

STANDBY 0.3 0000

Ref No.

MODE 1234567891011121314151617181920

CD PLAY 0 0.7 4.9 4.1 0 4.9 0 0 0.1 5.9 0 8.7 0 0 1.1 0 3.5 0.2 4.3 5.1

STANDBY 0 0.3 0.3 0.3 000000.300.30000000.30.3

Ref No.

MODE 21 22

CD PLAY 0.7 0.1

STANDBY 0.3 0

IC 1000

IC 1001

IC 1001

DECK MECHANISM P.C.B.

Ref No.

MODE 1234

CD PLAY 4.5 0 -0.1 0

STANDBY 0000

IC 971

CD LOADING P.C.B

Ref No.

MODE 123456789

CD PLAY 7.7 0 0 0 7.7 7.7 5.0 0 5.0

STANDBY 0.3 0 0 0 0.3 0.3 0 0 0

Ref No.

MODE 123456789

CD PLAY 7.7 0 0 0 7.7 7.7 5.0 0 5.0

STANDBY 0.3 0 0 0 0.3 0.3 0 0 0

IC 11

IC 21

POWER P.C.B.

Ref No.

MODE 123456789101112131415161718

CD PLAY -37,4 37.4 0 37.4 -37.4 0 0 0.8 0 -15.3 00000037.4 -37.4

STANDBY 0 31.1 0000000000000000

Ref No.

MODE 12345678

CD PLAY 0 0 0 -8.9 0 0 0 9.2

STANDBY 0 0 0 0.3 0 0 0 0.5

IC 500

IC 501

60

SA-PM31P / SA-PM31PC

MAIN P.C.B.

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY 4.2 4.1 0 9.6 11.2 10.3

STANDBY 0 -2.5 0 0 0.9 0.9

Ref No.

MODE E C B E C B 1 2 3 E C B E C B

CD PLAY 5.2 5.2 4.4 0 0 4.9 5.2 5.1 4.4 0 0 1.4 0 0 0

STANDBY 5.0 0 5.0 0 5.0 0 5.1 5.0 4.3 0 0 0 0 5.0 0

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY 0 5.1 0 0 0 0.7 0 3.2 0 0 3.3 0 0 3.3 0

STANDBY 0 5.0 0 0 0 0.7 0 2.5 0 0 2.0 0 0 2.0 0

Ref No.

MODE E C B E C B E C B E C B

CD PLAY 4.6 4.5 0 0 0 0.8 0 0 0.8 0 0 0.8

STANDBY 0 -2.2 0 0 0 -2.4 0 0 -2.4 0 0 -2.5

Q200

Q301

Q306

Q400 Q422

Q201

Q302 Q304 Q305

0 0 0.8
0 0 -2.4

Q303

Q308 Q309

Q423

Q223Q222

0 0 0.8 0 0 0.8
0 0 -2.3 0 0 -2.0

Q424

Q224

Q310Q307

PANEL P.C.B.

Ref No.

MODE E C B

CD PLAY 0 7.9 0

STANDBY 0 0 4.9

Q600

DECK P.C.B

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY 0 0 0 0 0 0 0 0 0 0 6.0 0 6.0 0.1 6.1

STANDBY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY 0 8.9 0.1 0 8.9 0.1 0 0.1 0 10.1 10.1 1.9 10.1 0 10.1

STANDBY 0 0.1 0 0 0.1 0 0 0 0 0.1 -0.1 0 0 0 0

Ref No.

MODE E C B E C B

CD PLAY 0 0.1 0.8 0 0 0.1

STANDBY 0 0 -0.2 0 0 0

Q1101

Q1309 Q1310 Q1312 Q1314

Q1316 Q1317

Q1201 Q1302

Q1303

Q1304

Q1315

TRANSFORMER P.C.B.

Ref No.

MODE E C B E C B E C B E C B

CD PLAY 0 0 0.7 5.8 9.5 6.5 0 3.4 -0.2 -30.4 -51.7 -31.0

STANDBY 0 0.1 0 0 0.1 0 0 0 0 -0.6 -0.4 -0.3

Q575

Q577 Q578 Q579

POWER P.C.B.

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY 9.1 15.8 9.7 15.7 9.9 15.1 0 -9.5 -0.7 -8.9 -36.5 -9.5 9.2 15.0 9.7

STANDBY 0 0 0 0 0 0 0 0 0 0 0 0 0 0.4 0.4

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY 15.1 16 15.7 11.5 15.9 12.2 0.1 4.9 0 0 4.9 0.1 4.9 7.9 5.5

STANDBY 0 0 0 0 0 0 0 0 0 0 0.1 0 0 0 0

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY 0 4.4 0.4 7.8 9.9 8.4 0 0.2 0.2 9.9 0 9.9 0 9.9 0

STANDBY 0 0 0 0 0 0 0 0 0 0 0 0 0 0.5 0

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY 0 4.9 0 0 -6.0 0 0 0 -6.0 0 0 -6.0 -1.4 9.2 -0.9

STANDBY 0 0 0 1.4 1.2 0 0 0 0.7 0 0 0.7 0.6 0.5 0

Ref No.

MODE E C B E C B E C B E C B E C B

CD PLAY -1.4 9.2 -0.8 -0.7 9.2 -0.1 -0.7 9.2 -0.1 0 0 -6.0 0 0 -6.0

STANDBY 0.6 0.5 0 0.6 0 0 0.6 0.5 0 0 0 0.7 0 0 0.7

Ref No.

MODE E C B E C B E C B E C B

CD PLAY 0 0 0 0 0 0 0 0 -6.0 0 0 -6.0

STANDBY 0 0 0 0 0 0 0 0 0.6 0 0 0.6

Q501 Q502 Q505 Q506

Q509 Q514 Q515 Q516

Q519 Q520

Q703

Q715 Q716 Q717 Q718 Q719

Q720 Q721 Q725

Q704 Q710 Q711 Q714

Q700 Q701 Q702

Q726

Q508

Q517

61

SA-PM31P / SA-PM31PC

14.1. Waveform

CN306 PIN 4
CD PLAY

3.84Vp-p (25msec.div)

CN306 PIN 8
CD PLAY

4.12Vp-p (25msec.div)

CN308 PIN 15
CD PLAY

5.12Vp-p (10msec.div)

CN306 PIN 5
CD PLAY

3.64Vp-p (25msec.div)

CN308 PIN 10
CD PLAY

5.68Vp-p (10msec.div)

CN506 PIN 1
CD PLAY

78.4Vp-p (10msec.div)

CN306 PIN 6
CD PLAY

4.04Vp-p (25msec.div)

CN308 PIN 11
CD PLAY

5.56Vp-p (10msec.div)

CN506 PIN 2
CD PLAY

78.4Vp-p (10msec.div)

CN306 PIN 7
CD PLAY

4.48Vp-p (25msec.div)

CN308 PIN 12
CD PLAY

5.60Vp-p (10msec.div)

CN506 PIN 6
CD PLAY

1.56Vp-p (10msec.div)

62

15 Block Diagram

15.1. CD Servo Block

OPTICAL PICKUP

SEMICONDUCTOR

LASER

Q701

LASER

POWER DRIVE

B

B

PHOTO DETECTOR

EE EE

D C

A B

D C

SA-PM31P / SA-PM31PC

FOCUS

COIL

TRACKING

COIL

EFEF

IC703

BA5948FPE2

4CH DRIVE

26

VREF

F+

F-

T+

T-

M701

MOTOR

M702

SPINDLE

MOTOR

M

M

TRAVERSE

D3-

15

[CH3]

D3+

16

D4-

17

[CH4]

18

D4+

D2+

14

[CH2]

13

D2-

D1+

12

[CH1]

D1-

11

LEVEL
SHIFT

LEVEL
SHIFT

LEVEL
SHIFT

LEVEL
SHIFT

IN3

28

27

IN4

IN2

1

3

IN1

B

FOP

TRP

TVD

ECS

63

MUTE
[CH1]

MUTE
[CH2]

PC1

4

PC2

2

PC

SA-PM31P / SA-PM31PC

28

PD

29

LD

30

E

35

A

34

C

33

B

32

D

31

F

TO MAIN BLOCK

A

MLD

MCLK

MDATA

STAT

IC702

MN6627953HB

SERVO PROCESSOR
DIGITAL SIGNAL PROCESSOR/
DIGITAL FILTER/
D/A CONVERTER

67BLKCK

BLKCK

65

MLD

63

MCLK

64

MDATA

66

STAT

NRST

X2

X1

68

70 71

X701

OUTL

OUTR

SPOUT

SDPOL(PC)

TRVP

TRP

FOP

50

54

5

6

7

11

13

CD SIGNAL

RCH

ECS

PC

TVD

TRP

FOP

CDRST

64

15.2. Main Block

SA-PM31P / SA-PM31PC

(DECK 2)

R/P HEAD

(DECK 2)

ERASE HEAD

LCH

IC1001

AN7326K

P/B REC AMP

2

22(1)

PB LIN(R)

IC1000

C1AA00000612

ANALOG SWITCH

4

FILTER

B

20(3)

PB L EQ(R)

Q1317

BEAT PROOF

LEVEL SWITCH

19(4)

PB LOUT(R)

MUTE

18

ALC LOW OUT

TPS

TPS OUT

6

17

TPS

GAIN ADJ

16(7)

REC

L1301

LIN(R)

15(8)

REC

L OUT(R)

REC AMP (L)

B

ALC

14

ALC

Q1309,
Q1310,
Q1312

BIAS

SWITCH

13

NOR/CRO SW

LOGIC

12

VCC

RIPPLE

REJECTION

SWITCH

9

10

RF

PB/REC SW

Q1101

(Q1201)

MUTING
SWITCH

Q1302

MUTING

DECK

CONT

21(2)

PB L NF(R)

3

IC971

CNB13030R2AU

PHOTO
INTERRUPTER

61

PHOTO

VOL_JOG

95

VR600

VOLUME JOG

90

DECK_AD2

E_CS

E_CLK

22

3234635

IC303

C3EBEG000073

EEPROM

89

DECK_AD1

E_DAT

D1301

S971

(MODE)

S972

(HALF)

S975

(RECINH_F)

IC302

C2CBJG000574

MICROPROCESSOR

KEY3

92

S601~S608,S618

KEY SW

KEY1

94

S614~S617

KEY SW

Q1304

SWITCH

B

(REC:H)

Q1303

SWITCH

59

REC

SSEQ_LED

85

Q600

LED DRIVER

D601

65

DMT

B

65

SA-PM31P / SA-PM31PC

9(10)

C1IN

(C2IN)

4(3)

17(16)

SEL1OUT

(SEL2OUT)

OUT1(2)

1(2)

VIN1

(VIN2)

IC300

C1BB00000757

ASP

5(6)

AIN

(A2IN)

14S113

SC

CD SIGNAL

7

B1IN

8

RCH

B2IN

Q721

(Q720)

AGC

IC501

C0AABB000125

OP AMP

D709

(D708)

Q725

(Q726)

MUTING
SWITCH

MUTING
SWITCH

Q710

(Q711)

JK600

HEADPHONE

JK303

AUX

Q223

(Q423)

Q200

MUTING
SWITCH

MUTING
SWITCH

25

AUXMUTE

Q224

(Q424)

MUTING
SWITCH

Q222

(Q422)

Q400

MUTING
SWITCH

MUTING
SWITCH

24

TMUTE

68

MBP1

6,7

Q307,
Q308

BEATPROOF

SWITCH

ASP_DATA

MBP2

67

ASP_CLK

C2CBJG000574

MICROPROCESSOR

3

TU_ST

IC302

XOUT13XIN

15

X301

TUNER PACK

Z301

2

TU_TUNED

Q201

REGULATOR

4

5

TU_CK

TU_SDA

XCIN10XCOUT

11

X302

REMOTE SENSOR

B

Q718

(Q719)

MUTING

CONTROL

Q704

MUTING

CONTROL

D526

MUTE_A

21

MUTE_H

84

HP_SW

RMT

18

Z601

40

S609~S613,
S619~S623

KEY SW

93

KEY2

RCH

S1901

TAPE EJECT

66

SA-PM31P / SA-PM31PC

D971

4

PLUNGER

88

Q309

SWITCH

Q1315

SWITCH

FL 600

FL DISPLAY

40,1,2

23 14~1122~16

SEG20

SEG10

IC600

8

29

RST

26

/FL_REST

87

Q310

MOTOR

SWITCH

SWITCH
(MOTOR
SUPPLY)

Q1314,Q1316

C0HBB0000044

FL DRIVER

CS1

10

3

30

FL_CS1

MOTOR

M

DIG00

DIG01

DATA9SCK

28

FL_CLK

FL_DOUT

DIG10

IC302

C2CBJG000574

MICROPROCESSOR

FROM

TRANSFORMER

RM11

UP/DOWN MOTOR

M

4

IC11

OUT1

C0GAG0000007

UP/DOWN
MOTOR
DRIVER

F_IN

7

58

57

M2_F

RM21

LOADING MOTOR

M

2

OUT2

R_IN

9

M2_R

4

OUT1

F_IN

7

56

M1_F

2

IC21

C0GAG0000007

LOADING
MOTOR
DRIVER

R_IN

9

55

M1_R

OUT2

67

SA-PM31P / SA-PM31PC

TO CD

BLOCK

A

S2

PLAY

FAN

MOTOR

M

SWITCH

Q700~

Q515,Q516

SWITCH

B

(DCDET)

MDATA

STAT

MCLK

BLKCK

NRST

MLD

Q703

B

Q306

DCDET
SWITCH

12

/RESET

47

20

SYNC

DCDET

PCONT

49

82

/RESTSW

B

Q305

SWITCH

19

BOTTOM

BLKCK

S3

80

BT_SW

54

CD-RST

CHANGE

S5

43

MLD

CHANGE_SW

1

Q304

SWITCH

42

50

PLAY_SW

MDATA

S1

STOCK

51

48

STOCK_SW

STATUS

S4

OPEN

52

39

OPEN_SW

S701

RESET SWITCH

MCLK

IC302

C2CBJG000574

MICROPROCESSOR

POS

53

Q1

PHOTO COUPLER

68

SIGNAL LINES

: MAIN SIGNAL LINE

: FM/AM SIGNAL LINE : TAPE RECORD SIGNAL LINE

( ) Indicates Pin No. of Right Channel

: TAPE PLAYBACK SIGNAL LINE

Note : Signal Lines are applicable to the Left Channel only.

IC500

RSN315H41-P

POWER AMP

SA-PM31P / SA-PM31PC

: CD-DA SIGNAL LINE

: AUX SIGNAL LINE

Q301

SWITCH

LO_LIN(R)

HI_LIN(R)

16(15)

Q717(Q716)

AMPLIFIER

Q715(Q714)

AMPLIFIER

D530

13(12)

FILTER

FILTER

B

Q303

Q302

PCONT
SWITCH

SWITCH

IC305

C0DBZGC00067

3.3V REGULATOR

B

ECONOMY

B

B

Q506

CURRENT
CONTROL

Q517

SWITCH

B

Q514

REGULATOR

Q501

REGULATOR

Q505

SWITCH

Q519

SWITCH

Q575

SWITCH

B

-VccM

10

REGULATOR

D508

Q579

8

ACDET

7(9)

LO_LOUT(R)

-VCC

5

4

B

B

+VCC

HI_LOUT(R)

3(6)

HI_L(R)

JK301,
JK302

LO_L(R)

D707

Q578

SWITCH

D579,D580

Z501

D581

D585,D586

TRANSFORMER

F1

T502

SUB

L503

JK501

AC INLET

Q577

REGULATOR

B

D500

T501

B

B

TO FL

DISPLAY

FP502

D592

-VP
RL501

B

Q520

REGULATOR

D525

B

Q502

SWITCH

Q508

SWITCH

Q509

CURRENT

LIMITING

SWITCH

B

D587~D589

FP501

POWER TRANSFORMER

E501

69

SA-PM31P / SA-PM31PC

16 Notes of Schematic Diagram

(All schematic diagrams may be modified at any time with
the development of new technology)

Note :

S1 Stock switch
S2 Play switch
S3 Bottom switch
S4 Open switch
S5 Change switch
S601 CD 1 switch
S602 CD 2 switch
S603 CD 3 switch
S604 CD 4 switch
S605 CD 5 switch
S606 CD Play/Pause switch
S607 Tape switch
S608 Tuner switch
S609 Track up switch
S610 Track Down switch
S611 Album Up switch
S612 Album Down switch
S613 SSEQ switch
S614 Power switch
S615 Surround switch
S616 AUX switch
S617 CD Check switch
S618 Stop switch
S619 Open/Close switch
S620 CD Change switch
S621 REV switch
S622 FWD switch
S623 REC switch
S701 REST switch
S971 Mode switch
S972 Half switch
S973 CR02 switch
S975 Recinh_F switch
S1901 Tape Eject switch
VR600 Volume VR

· The voltage value and waveforms are the referen ce voltage

of this unit measured by DC electronic voltmeter (high
impedance) and oscilloscope on the basis of chassis.
Accordingly, there may arise some error in voltage values
and waveforms depending upon the internal impedance of
the tester or the measuring unit.

No mark : Playback
<< >> : Rec
(( )) : CD
<> :FM
() :AM

· Importance safety notice :

Components identified by
characteristics important for safety. Furthermore, special
parts which have purposes of fire-retardant (resistors), high­quality sound (capacitors), low-noise (resistors), etc. are
used. When replacing any of components, be sure to use
only manufacturer´s specified parts shown in the parts list.

Caution !

IC, LSI and VLSI are sensitive to static electricity.

mark have special

Secondary trouble can be prevented by taking care during
repair.

· Cover the parts boxes made of plastics with aluminium foil.

· Put a conduc tive mat on the work table.

· Ground the soldering iron.

· Do not touch the pins of IC, LSI or VLSI with fingers directly .

70

17 Schematic Diagram

17.1. CD Servo Circuit

SCHEMATIC DIAGRAM - 1

SA-PM31P / SA-PM31PC

OPTICAL PICKUP UNIT

E

GND

F

Vcc

B

LD

LDG

FOCUS COIL

C2 0.22

0.47

C1

C9 0.22

VR1

Vref

A

HUL7213

NC

LPD

GND

TRACKING COIL

VCC

LD GND

GND

GND

VREF

LPD

GND

CD SERVO CIRCUIT

R701

4.7

Q701

CN701

VCC

1

1

F

E

LD

A

B

T-

T+

F-

F+

F

2

2

E

3

3

LD

4

4

LD GND

5

5

GND

6

6

A

7

7

GND

8

8

B

9

9

VREF

10

10

LPD

11

11

GND

12

12

T-

13

13

T+

14

14

F-

15

15

F+

16

16

B1ADCF000001

LASER POWER DRIVE

R754

5.6

87

C713

0.1

60

93

94

95

84

: +B SIGNAL LINE : CD-DA SIGNAL LINE

C701

6.3V33

828389

C735

0.1

C734

10V220

39

D3-

D3+

D2+

M

M701

TRV MOTOR

29

R729

1K

R727

1K

C752

C739

0.018

0.018

IN4

PC2

R732

C714

6.3V100

48

2827

IN3

C738

0.056

IN2

R723

3.3K

1K

90

1910181117

20 21

D4-

D4+

PVCC2

PGND2

D2-

D1+

D1-

PVCC1

1216131514

38

PGND1

9

36

30

NC

GND

IC703

BA5948FPE2

IC 4CH DRIVE

NC

GND

29

8

37

NC

NC

6227

R736

100

25424523

NC

NC

26

VCC

VREF

PC1

IN1

321

35

NC

NC

R728 10K

R749

18K

R725

330

C715

0.47

R766

5.6K

R735

100

R731

22K

49

R715

3.3K

R739

1K

52

55

M

M702

SP MOTOR

71

SA-PM31P / SA-PM31PC

SCHEMATIC DIAGRAM - 2

CD SERVO CIRCUIT

C723

C724

6.3V220

0.1

50

C702

0.47

27

C706

0.1

C710
470P

R702

4.7K

R705

39K

C747
390P

R744

47K

C742

0.022

C707

0.022

34

23

40

RFIN

39

RFOUT

38

RESERVE

37

RFVDD

36

DCDET

A

35

34

C

B

33

D

32

31

F

30

E

29

LD

PD

28

27

VREF

26

TEOUT

25

TEN

24

FEN

23

FEOUT

22

RFENV

21

CEA

C704

0.1

C705

0.1

41

R711

82K

R712

820

CAGC

FEIN

: +B SIGNAL LINE : CD SIGNAL LINE

C703

6.3V100

51

C716
680P

43

42

ARFOUT

TEIN

181920

C718 0.082

C741 1000P

C717 0.1

C744 0.015

444546

48

49

47

IREF

PLLF

DSLF

PLFF0

ARFIN

AVSS2

MN6627953HB

SERVO PROCESSOR

DIGITAL SIGNAL PROCESSOR/

DIGITAL FILTER/

D/A CONVERTER

FOP

FOM

IOVDD3

DVDD1

DVSS1

ADPVCC

14

1213

15

16

17

72

50

OUTL

AVDD2

IC702

TRP

TRM

11

71

C755

0.1

5

53

52

51

NC

AVSS1

AVDD1

TRVM

TRVP2 (NTLOCK)

TRVM2 (NFLOCK)

10

8

9

69

68

70

54

C762

OUTR

TRVP

7

0.1

55

6

: CD-DA SIGNAL LINE

R717

1K

R718

1K

C731

6.3V220

59

60

56

57

58

DVSS2

SPPOL (PC)

5

DVDD2

IOVDD1

PWMSEL

SPOUT

4

NTEST

REGON

IOMODE

(FLAG0)DQSY

(NRFDET)TXTD
(IPFLAG)TXTCK

EXT0

EXT1

EXT2

2

1

3

61

62

63

IOVDD2

GOUT0

GOUT1

C725

1000P

C726

1000P

C730

0.1

C733

0.1

C729

16V10

FLAG

MCLK

MDATA

MLD

STAT

BLKCK

NRST

DVSS3

GIO0

GIO1

GIO2

C759

16V10

TX

X2

X1

13

14

17

19

C727
50V1

C728
50V1

R721

100

16

18

C753
470P

12

8 9 31 4

R760

61

62

24

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

7

100

R753

10

53

22

C740

73

0.1

74

75

76

77

78

RSXC16M9S04

R720 1M

R714

470

C722

22P

X701

C721

18P

10

R764

1K

C745

0.01

21

D750

MAZ80560ML

LCH OUT

17

A.GND

16

RCH OUT

15

+3.3V

14

LD SW

13

D.GND

12

+7.5V

11

TO

TX

10

MLD

STAT

/RST

9

8

5

4

1

7

6

3

2

CN702

MAIN
CIRCUIT
(CN306) ON
SCHEMATIC
DIAGRAM-6

P.GND

MCLK

C743

0.1
MDATA

BLKCK

REST SW

LOADING

3

C749

3900P

28

33

32

R7061KR704

C760

0.1

1K

C746

0.1

64

S701

REST SW

2

1

11

72

17.2. Main Circuit

SA-PM31P / SA-PM31PC

TO
TUNER PACK
Z301
ENG06810QF

TO
DECK CIRCUIT
(CN1305) ON
SCHEMATIC
DIAGRAM-10

HEADPHONE

SCHEMATIC DIAGRAM-3

MAIN CIRCUIT

CN101

PORTSL

1

CL

2

SDA

3

TUNED

4

LCH

5

STEREO

6

RCH

7

8

T9V

9

TGND

10

JK303

AUX

JK600

Lch

Rch

CN309

3

1

2

PLUNGER

1

MOTOR

2

PGND

3

DECK_AD2

4

MO10V

5

DECK_AD1

6

+9V

7

PBL

8

PBR

9

DECK_A_GND

10

GND1

11

REC_L

12

REC_R

13

REC

14

15

DMT

16

DVREF+

17

DGND

18

9V GND

19

KEY2 (TAPE_EJECT)

20

PHOTO

21

L602

G0C100JA0030

1

5

4

3

2

6

7

R211

1.8K

C211

L203

470P

J0JBC0000019

C411

R411

470P

1.8K

R462

10

Q310

KRC101STA

MOTOR SWITCH

C604

0.022

C605

0.022

C301

0.1

C212

1000P

C412

1000P

L600

J0JBC0000019

C603

0.001

: +B SIGNAL LINE

Q201

B1ABCE000016

REGULATOR

R201

180

C201

16V330P

C326

0.01

KEY2 (TAPE_EJECT)

Q309

KRC101STA

PLUNGER SWITCH

L601

J0JBC0000019

C619

0.1

DECK_AD2

MO10V

DECK_AD1

+9V

PBL

PBR

REC_L

REC_R

REC

DMT

DVREF+

PHOTO

PLUNGER

MOTOR

HP_R

HP_L

HP_GND

HP_SW

TUNED

TUN_L

TUN_R

D201

B0BC01000014

AUX_L

AUX_R

AUX_L

AUX_R

CD_R

CD_L

TUN_L

TUN_R

PBL

PBR

: MAIN SIGNAL LINE
: TAPE PLAYBACK SIGNAL LINE
: TAPE RECORD SIGNAL LINE

CL

SDA

T10V

ST

CD3.3V

C381

50V2.2

AUXMUTE

WA214

WA414

C0DBZGC00067

CD3.3VNCVstby

4321

5

C400

0.018

C200

1000P

IC305

3.3V REG IC

GND

Q200

KRA102STA

MUTTING SWITCH

Q224,Q424

B1ABCE000016

MUTTING SWITCH

WA116

WA115

R420

2.7K

R220

2.7K

WB203

Q400

KRA102STA

MUTTING SWITCH

Vin

C380

0.1u

R421

12K

R221

12K

R274

R474

R214

10K

R414

10K

SW5V

1K

1K

R422

1K

R222

1K

C417

1000P

C217

1000P

C214
220P

C414
220P

: FM/AM SIGNAL LINE

: CD SIGNAL LINE

: AUX SIGNAL LINE

Q223,Q423

B1ABCE000016

MUTTING SWITCH

R273

R473

Q223

1K

1K

Q423

Q224

Q424

Q422

R475

1.8K

R275

1.8K

Q222,Q422

B1ABCE000016

MUTTING SWITCH

Q222

WA212

R476

3.9K

R424

3.9K

73

TMUTE

SA-PM31P / SA-PM31PC

SCHEMATIC DIAGRAM-4

MAIN CIRCUIT

C424

16V10

C420

R218

3.9K

16V10

R418

3.9K

16V10

C419

16V10

C422

R276

3.9K

R219

390

R419

390

C234

25V47

C224

16V10

C220

16V10

C219

16V10

C222

16V10

IC300

C1BB00000757

ASP IC

1

VIN1

2

VIN2

3

SEL2OUT

4

SEL1OUT

5

A1IN

6

A2IN

7

B1IN

8

B2IN

9

C1IN

10

C2IN

11

FILTER

12

GND

: +B SIGNAL LINE

50V2.2

24

DS2

23

INF1

22

INF2

21

BNF2

R471
390K

20

BOUT2

19

BNF1

18

BOUT1

17

OUT1

16

OUT2

15

VCC

14

S1

13

SC

C358

16V220

C372

C373

470

C367

0.1

C270
820P

C471

0.27

C472

0.27

C445
180P

C470
820P

R271
390K

R375

4.7

: MAIN SIGNAL LINE
: FM/AM SIGNAL LINE
: TAPE PLAYBACK SIGNAL LINE

R472

2.7K

C271

0.27

R272

C364

100P

R374

1.2K

C363
100P

2.7K

R_OUT

L_OUT

+9V

C374

470

R373

1.2K

C245
180P

C272

0.27

SSEQ_LED

SW5V

SYNC

RMT

FL_DATA

FL_CS

FL_CLK

FL_RST

PCONT

VREF+

SYS6V

+9V

KEY3

KEY2 (TAPE EJECT)

KEY1

VOL_JOG

WA106

: TAPE RECORD SIGNAL LINE
: CD SIGNAL LINE

SSEQ_LED

SW5V

SYNC

GND2

RMT

FL_DATA

FL_CS

FL_CLK

FL_RST

PCONT

VREF+

SYS6V

+9V

(TAPE EJECT) KEY2

C368

0.1

KEY3

KEY1

VOL_JOG

CN308

17

16

15

14

13

12

11

10

TO

9

MAIN CONTROL
CIRCUIT (CN606)

8

ON SCHEMATIC

7

DIAGRAM-8

6

5

4

3

2

1

R224

3.9K

REC_L

REC_R

ASP_DAT

ASP_CLK

74

R432

C441

C437

R_GND

4

SPEAKER JACK

3

BLUE/HOAR

2

1

4

3

2

SPEAKER JACK

RED/BLACK

1

JK302

JK301

HI_R

L_GND

10

0.1

0.1

10

R230

C241

C236

CN304

R231

0.1
C240

0.1
C237

LO_R

LEFT GND

LEFT GND

24687531

TO
POWER CIRCUIT (CN504)
ON SCHEMATIC
DIAGRAM-13

10

0.1

0.1

HI_L

LO_L

RIGHT GND

RIGHT GND

HI_R

R431

C440

C436

10

0.1

0.1

HI_L

LO_R

R_GND

LO_L

L_GND

SCHEMATIC DIAGRAM-5

SA-PM31P / SA-PM31PC

MAIN CIRCUIT

R360

R389

820

10K

VREF+

R480

47K

/RST

RESTSW

HP_SW

SSEQ_LED

MOTOR

PLUNGER

DECK_AD1

DECK_AD2

REG1

KEY3

KEY2

KEY1

VOL_JOG

R310

10K

VCC

R209

KEY2 (TAPE_ EJECT)

Q302

KRC102STA

PCONT SWITCH

DVREF+

R332
470K

WA102

Q301

R386

10K

10K

R333

4.7K

C303
470P

C362

10V22

VREF+

R306

10K

R383

10K

WA114

R385 100

R307 100

R308 100

R309

10K

0.01

C343

C339 560P

Q301,Q303

KTA1504GRTA

SWITCH

D302

B0ACCE000003

R330
470K

R331

10K

R334

Q303

1K

Q302

R479 1K

R381 100

R379 100

R378 100

C338 560P

C337 560P

C336 560P

SYS6V

: +B SIGNAL LINE

R384

4.7K

R382

100

R417 100

C335 560P

C334 560P

C333 560P

R461 4.7K

R455 4.7K

R457 4.7K

R456 4.7K

R458 4.7K

C331 100P

C329 100P

VREF+

PCONT

NC

81

/RESTSW

82

NC

83

HP_SW

84

SSEQ_LED

85

RE_LED

86

MOTOR

87

PLUNGER

88

89

DECK_AD1

DECK_AD2

90

91

REG1

92

KEY3

93

KEY2

94

KEY1

95

VOL_JOG1

96

AVss

97

NC

98

VREF

99

AVCC

100

DEMO
SETTING

C325 0.022

R357 22K

R358 22K

C327
220P

77

787980

76

NCNCNCNCNCNCNCNCNC

/CD

CD_RST

CHANGE SW

TU_TUNED

TU_ST

TU_CK

4

2

3

5

1

R459

100

R377 22K

CHANGESW

TUNEDSTCL

SDA

VREF+

EE_CS

EE_CLK

C3EBEG000073

5

R359

4.7K

EE_DAT

364

IC303

EEPROM

78

75

74

TU_SDA

MBP1

67

12

C345 100P
C344 100P
C304 100P

73

72

MBP2

BYTE

9

8

WB202

4.7K

R301

70

69

71

NC

C2CBJG000574

MICROPROCESSOR

CNVss/EFP.CNVSS

XCIN

XCOUT

/RESET/EFP_RESET

12

10

11

R356

10M

ASP_DAT

ASP_CLK

R450 1K

R440 1K

68

66

67

ASP_DAT

ASP_CLK

IC302

XOUT

VSS

14

13

15

R354

680

R355
330K

X302

RSXD32K7S02

VCC

DMT

EE_DAT

R312 2.2K

64

65

62

63

NC

VSS

VCC

DMT

EE_DAT

XIN

VCC

/NMI

RMT

BLKCK

19

18

16

17

R372 22K

R371 100

VCC

RMT

CBLKCK

WA122 WA119 WA117

C322 68P

X301

H2A100500006
C321 68P

C323

18P

C320 56P

C324

22P

REC

PHOTO

M2_FOUT

M1_FOUT

M2_ROUT

R313 100

R314 100

R315 100

R316 100

R317 100

59

57

60

REC

KEY_LED

MUTE_H

EE_CS

21

22

MUTE_H

EE_CS

C319

1000P

Q307, Q308

58

M2_F

EE_CLK

23

WA110

EE_CLK

C318

M2_R

TMUTE

24

TMUTE

R353

4.7K

56P

56

M1_F

AUX_MUTE

25

AUXMUTE

61

PHOTO

SYNC

20

R361 10K

R362 470

SYNC

Q308

B1ABCE000016

BEATPROOF SWITCH

POS

BT_SW

M1_ROUT

WA113

R318 100

R319 100

R320 100

54

55

53

POS

M1_R

BT_SW

FL_CS1NCFL_CLK

27

26

28

R340 100

R339 100

FL_CS1

FL_CLK

R352

4.7K

Q307

C317

1000P

OPEN_SW

STOCK_SW

R321 100

R322 100

51

52

OPEN_SW

STOCK_SW

PLAY_SW

PCONT

STATUS

DCDET

RDS_DAT

RDS_CLK

MDATA_OUT

MUTE_A

/FL_RESET

FL_DOUT

30

29

WA103

C306
100P

R335 100

R341 100

FL_RST

FL_DATA

MLD

EPM

MCLK

BUSY

SCLK

TXD

RXD

50

49

48

47

CE

46

45

44

43

42

41

40

39

NC

38

NC

37

NC

36

NC

35

34

33

32

31

75

SA-PM31P / SA-PM31PC

SCHEMATIC DIAGRAM-6

WA120

C315

100P

MAIN CIRCUIT

WB201 WA111

WA107 WA118

WA105 WA108

WA104

C313

6.3V100

KRC103STA

C314
50V1

R326 4.7K

R325 47K

R324 4.7K

R323 4.7K

R328 100

R452 100

R329 1K

R336 4.7K

R338 4.7K

R453 100

R337 4.7K

R388 47K

R391 4.7K

R390 4.7K

C308 100P

C310 0.01

R350 47K

L300 3.3uH

C312

0.1

10V1000

Q306

DCDET SWITCH

D305

B0ACCK000005

Q304,Q305

B1GBCFGG0001

SWITCH

C311

R349

680

R342

10K

WA123 WA112

MA729TX

C316

50V2.2

R348

R347

10K

D304

10K

Q304

R343

10K

B0ACCE000003

R346

10K

Q305

: +B SIGNAL LINE

DVREF+

R327 4.7K

R344

10K

D303

R351

47K

R345

10K

WA100

WA101

PLAY_SW

PCONT

CCDSTAT

DCDET

MLD

MDATA

MUTE_A

MCLK

VREF+

SYS6V

DCDET

CDSTAT

VREF+

CCDSTAT

BLKCK

CBLKCK

: MAIN SIGNAL LINE

: CD SIGNAL LINE

+7.5V

CHANGESW

M2_FOUT

M2_ROUT

BT_SW

POS

SW5V

OPEN_SW

M1_FOUT

M1_ROUT

STOCK_SW

PLAY SW

RESTSW

/RST

CDSTAT

BLKCK

MLD

MDATA

MCLK

CD+7.5V

CD_R

CD_L

CD3.3V

T10V

R_OUT

L_OUT

+9V

SW5V

MO10V

+7.5V

CD+7.5V

MUTE_A

MUTE_H

DCDET

HP_L

HP_GND

HP_R

C243

0.1

R365 1K

R366 1K

R367 1K

R368 1K

R369 1K

R370 1K

C359

10V100

G0A200D00002

6.3V100

R363

120

C341

C242

0.1

L301

C244

0.1

R364

100

C340

0.1

CR16 SWITCH

UP/DOWN F

UP/DOWN R

BOTTOM SW

OPEN SW

STOCK SW

REST_SW

C342

1000P

+7.5V

PGND

DNGD

SENS

LED

LOAD F

LOAD R

PLAY SW

/RST

STAT

BLKCK

MLD

MDATA

MCLK

P_GND

+7.5V

D_GND

LDSW

+3.3V

Rch OUT

A_GND

Lch OUT

T10V

R_IN

TGND

L_IN

+9V

GND1

DGND

SW5V

MO10V

FAN1(+)

FAN2(-)

+7.5V

PGND

FAN2-

FAN1+

CD+7.5V

MUTE_A

MUTE_H

DCDET

HP_L

HP_GND

HP_R

CN305

1

2

3

4

5

6

7

8

9

10

11

12

13

14

CN306

1

2

3

4

5

6

7

8

9

TX

10

11

12

13

14

15

16

17

1

2

3

4

5

6

7

8

9

10

11

12

13

CN303

1

2

1

2

3

4

5

6

7

TO
CD LOADING
CIRCUIT
(CN1) ON
SCHEMATIC
DIAGRAM-15

TO
CD SERVO
CIRCUIT
(CN702) ON
SCHEMATIC
DIAGRAM-2

CN301

TO
POWER CIRCUIT
(CP501) ON
SCHEMATIC
DIAGRAM-11

CN302

TO
POWER CIRCUIT
(CP502) ON
SCHEMATIC
DIAGRAM-11

TO FAN

76

SA-PM31P / SA-PM31PC

17.3. Main Control Circuit, Panel Circuit, Power-In Circuit and Function
Circuit

SCHEMATIC DIAGRAM-7

PANEL CIRCUIT

S608

/BAND

TUNER

S619

OPEN/CLOSE

R627

4.7K

S607

ALBUM DOWN

S618

R620

6.8K

STOP

R629

390

B3ADA0000087

Q600

KRC119STA

LED DRIVER

R623

2.7K

S606

TAPE

/PAUSE

CD PLAY

R611

2.7K

S612

ALBUM UP

R610

2.2K

D601

S611

R622

2.2K

S605

CD5

R621

1.8K

R609

1.8K

S613

SSEQ

S604
CD4

C612
100P

VR600

EVEJ1CF3024B

VOLUME JOG

123

R616

1.2K

S603

CD3

R619

1.2K

S610

TRACK DOWN

R606

12K

R605

22K
C611
100P

R6151KR614

S602

CD2

: +B SIGNAL LINE

REMOTE CONTROL SENSOR

R604

10K

1K

S601

CD1

R6081KR607

S609

TRACK UP

Z601

B3RAB0000040

VDD
G

O

WA616

1K

3

2

1

0

C610

C608

1000P

6.3V47

C609

0.01

R602

47

KEY2(TAPE EJECT)

SSEQ_LED

MAIN CONTROL CIRCUIT

H603B

/JW603

KEY3

VREF+

GND2

VOL_JOG

KEY2_1

RMT

+9V

1

2

3

4

5

6

7

8

9

CN603A

KEY3

1

VREF+

2

GND2

3

KEY2(TAPE EJECT)

4

VOL_JOG

5

KEY2_1

6

+9V

7

SSEQ_LED

8

RMT

9

C600

50V22

VREF+

VOL_JOG

SSEQ_LED

KEY3

GND2

KEY2

RMT

KEY1

+9V

FUNCTION CIRCUIT

R628

22K

S622

S623

FWD

REC

POWER IN CIRCUIT

R624

1.2K

S617

CD CHECK

S616
AUX

R626

10K

R6181KR617

S615

SURROUND

77

S621

REV

S620

CD CHANGE

1K

S614

POWER

R639

4.7K

D609

B3AAA0000487

R640

4.7K

R636

470

GND2

KEY2_1

SYS6V

KEY1

GND2

1
2

1
2

3

JW605

H601B

/JW601

H601A

/JW601

JW605

1
2

3

1
2

GND2

KEY2_1

SYS6V

KEY1

GND2

SA-PM31P / SA-PM31PC

SCHEMATIC DIAGRAM-8

MAIN CONTROL CIRCUIT

23456

1

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 44

7

SEG20

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

31

32

33

34

35

36

37

38

39

40

FL600

A2BB00000131

FL DISPLAY

SEG7

SEG6

SEG5

SEG4

SEG3

SEG09

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

12

SEG2

SEG1

28

25

2930

26

27

SEG08

SEG07

SEG06

SEG05

SEG04

SEG03

IC600

C0HBB0000044

IC FL DRIVER

SEG19

SEG20CSGND

XIN

XOUT

4

6

3

5

33

27K

C606

R603

: +B SIGNAL LINE

: +B SIGNAL LINE

GRID9

GRID8

GRID11

GRID10

24

21

22

23

DIG01

DIG00

SEG02

SEG01

DIG02

DIG03

DIG04

DIG05

DIG06

-Vp

DIG07

DIG08

DIG09

DIG10

Vcc

RST

SCK

SDATA

9

78

10

GRID7

20

19

18

17

16

15

14

13

12

11

GRID6

GRID5

GRID4

C615 220P
C616 220P
C617 220P

C618 0.01

C622 220P

GRID3

GRID2

GRID1

WA615

C601

50V22

R600

68

68

R601

B0BC6R700006

D600

C602

50V22

L603

G0C101JA0027

L603

CN606

17

16

15

14

13

12

11

TO

10

MAIN CIRCUIT

9

(CN308) ON
SCHEMATIC

8

DIAGRAM-4

7

6

5

4

3

2

1

FL1

FL2

-VP

SYS6V

R633 1K

FL_CS

L604

G0C3R3JA0027

R634 1K

SW5V

FL_RST

C613

10V22

R631 1K

R632 1K

FL_CLK

FL_DATA

C614

0.01

C620

50V22

C621

0.1
GND2

(ECONO)PCONT

SYNC

SYS6V

-VP

FL2

FL1

H606/JW606

1

2

TO

3

TRANSFORMER
CIRCUIT

4

(CN505) ON

5

SCHEMATIC

6

DIAGRAM-14

7

78

17.4. Deck Circuit, Deck Mechanism Circuit and Tape Eject Circuit

SCHEMATIC DIAGRAM-9

: TAPE PLAYBACK SIGNAL LINE

DECK CIRCUIT

: +B SIGNAL LINE

C1105 470P

: TAPE RECORD SIGNAL LINE

SA-PM31P / SA-PM31PC

R1103

R110133C1104

C1103

16V100

C1121

PB
Lin

PB
Rec

Rec

PB

1

C1221

50V1

C1201

L1302

Q1309

R1330

4.7

0.001

+

-

PB
Rin

0.001

­+

C1203

0.027

R1102

1.5K

2122

PB AMP (L)

PB AMP (R)

PB
R NF

2

16V100

33

R1201

Q1310

C1102

CP1301

5

4

3

2

1

5

PBLIN

4

3

PBRIN

2

1

6

C1324

C1323

16V47

1

BEATPROOF LEVEL SWITCH

470P

IC1001

AN7326K

P/B REC AMP IC

R1064

0

IC1000

C1AA00000612

ANALOG SWITCH

VCC

12 435

R1063

R1338

4.7K

Q1317

B1ABGC000005

L1301

7L1A62N

3

4700P

C1321

2

1

Q1317

H=OFF

0

R1335

1.5K

R1334

22K

4

5

6

C1202

470P

R1333

C1318

0.047

C1319

16V100

C1101

50V1

4.7

R1061

0

RLQB470JTD-D

18K

PB
L NF

R1202

C1204

C1316

0.001

C1317

0.001

C1314
2200P

C1106

C1107
1500P

19

20

PB
L EQ

Mute

Mute

PB
R EQ

4

3

C1207
1500P

1.5K
C1206

50V2.2

10K

R1204

16V 0.027

R1203 18K

C1205

470P

C1122

0.01

50V2.2

PB
L out

PB
Rout

C1301

R1104

TPS

5

50V0.1

C1315
2200P

10K

C1303

C1302

ALC
LOW
OUT

IC1001

TPS

R1329

4.7K

C1312

R1327

4.7K

0.033

0.033

1718

6

0.01

C1222

3300P

TPS
GAIN
ADJ

TPS
Out

3

470

R1302

C1371

RECH1

R1328

15K

16

REC
Lin

REC AMP (L)
REC AMP (R)

REC
Rin

7

0.01

C1123

C1208

2

270P

C1108

PB

PB

16V10

15

8

C1223

16V10

4.7M

R1303

REC
Lout

Rec

REC/PB

Rec

REC
Rout

270P

R1304 22K

R1305

B1AAGC000006

C1307

C1304

50V4.7

14

13

ALC

Nor/Cro
SW

Rec

PB

NOR/Chro

LOGIC

ALC

RIPPLE

REJECTION

LOGIC

PB/REC

RF

SW

10

911

C1308
16V22

C1305
16V33

10K

RECH1

Q1309, Q1310

BIAS SWITCH

Q1312

B1ABCF000011

SWITCH

10V220

12

Vcc

GND

R1337

10K

D1301

B0ACCK000005

C1320

50V1

R1332

10K

R1331

7.5K

79

Q1312

C1311
16V47

SA-PM31P / SA-PM31PC

SCHEMATIC DIAGRAM-10

DECK CIRCUIT

B1ABGC000005

R1105

2.2K

Q1101,Q1201

MUTTING SWITCH

R1109

1K

: +B SIGNAL LINE

: TAPE PLAYBACK SIGNAL LINE
: TAPE RECORD SIGNAL LINE

R1205

2.2K

C1210
6800P

C1109
50V3.3

C1209
50V3.3

HALF

MODE

PL

S971

S972

D971 MA2C16500E

R972

820

C1110
6800P

TPS

PLVCC

PL

R1401

12K

R1404

22K

R1405

GND2

PL_GND

R973

39K

10K

R1206

R1318

10K

PHOTO

PHOTO_T

R1106

100K

100K

R1371

VREF+

VREF+

RECINH_F

S975

IC971

22K

VREF-

VREF-

R1403

10K

R1402

270K

987654321

987654321

CR02

S973

CP1902

CS971

IC971

Q1101

Q1201

Q1304

B1GDCFGH0002

RECH1

AN6

VREF+

AN7

VREF-

PHOTO

21

PHOTO INTERUPTOR

CNB13030R2AU

21

DECK MECHANISM
CIRCUIT

R1107

R1207

REC:H

PLVCC

WR1903

1K

1K

Q1316

R1209

1K

R1309

470

R1341

R1374

470

470

Q1316

2SD09650RA

SWITCH

Q1302

B1GDCFJJ0002

DECK MUTTING CONTROL

C1310

R1313

50V0.1

10K

R1110

33K

R1210

33K

Q1303

B1GBCFGH0001

SWITCH

Q1314

B1GDCFGH0002

Q1314

SWITCH

R1342

47K

R1314

1K

Q1315

R1343

3.3K

R1345

1K

RECH

R1344

27K

KTA12710YTA

C1326

Q1315

SWITCH

16V10

PHOTO

VREF+

VREF-

RECH

BP

AN7

AN6

CN1305

PHOTO

9V_GND

VREF-

VREF+

DMT

REC

REC Rin

REC Lin

AF_GND

AF_GND

PB Rout

PB Lout

9V (DV9)

AN7

MOTOR_9V

AN6

MOTOR

PLUNGER

2

WR1308B

WR1308A

2

21

20

19

18

17

16

BP

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

TAPE_EJECT

MOTOR_GND

R1380

0

1

1

S1901

TAPE EJECT

TAPE EJECT
CIRCUIT

TO
MAIN CIRCUIT
(CN309) ON
SCHEMATIC
DIAGRAM-3

80

17.5. Power Circuit

SCHEMATIC DIAGRAM-11

POWER CIRCUIT

R790

2.7K

C733

50V0.47

T10V

1

R_IN

2

TGND

3

L_IN

4

+9V

5

SGND

6

DGND

7

SW5V

8

M10V

9

FAN1

10

FAN2

11

7.5V

12

PGND

13

D701

7.5V

1

MUTEA

2

MUTEH

3

DCDET

4

HP_L

5

HPGND

6

HP_R

7

TO
MAIN CIRCUIT
(CN301) ON
SCHEMATIC
DIAGRAM-6

TO
MAIN CIRCUIT
(CN302) ON
SCHEMATIC
DIAGRAM-6

CP501

CP502

C734

50V0.47

D702

B0AACK000004

B0AACK000004

R791

2.7K

D704

D703

B0AACK000004

T10V

+9V

SW5V

M10V

FAN1

FAN2

7.5V

B0AACK000004

D700

B0AACK000004

7.5V

MUTEH

DCDET

R712

1K

: -B SIGNAL LINE

: +B SIGNAL LINE

Q704

KRA102MTA

MUTTING CONTROL

R713

56K

Q704

R789

R788

100K

C705

10

100K

C736

R769

C737

R768

4.7K

0.047

4.7K

0.047

R726

27K

R764

R765

68K

68K

: MAIN SIGNAL LINE

R778

15K

Q720

KTC3199GRTA

AGC

C742

50V0.47

1200P

R775

15K

C744

0.01

C741

50V 0.47

KTC3199GRTA

C740

1200P

C739

Q721

C771

16V10

R748

1.5K

R749

1.5K

Q718,Q719

B1AAGC000006

MUTTING CONTROL

Q721

AGC

R773

1K

R776

1K

R767

8.2K

Q718

Q719

C738

R774

16V10

100K

R766

8.2K

4

IC501

C0AABB000125

OP AMP IC

678

5

C745
100P

R721

R727

82K

100K

C749

0.01

D709

MA2C16500E

R771
100K

D708

MA2C16500E

R772

4.7K

C746

C748

100P

C747

27P

R753

2.2K

R759

4.7K

R750

3.3K

R752
100K

C750

R720

82K

27P

SA-PM31P / SA-PM31PC

R758

2.2K

0.01

123

C743

0.01

R751

3.3K

16V10

C710
1000

C709
1000

C728

3300P

C726

C727

16V10

R754

R755

22

22

Q726

Q725

Q725,Q726

B1AAGC000006

MUTE

R798

R799

1K

1K

81

SA-PM31P / SA-PM31PC

SCHEMATIC DIAGRAM-12

POWER CIRCUIT

: -B SIGNAL LINE

: +B SIGNAL LINE

: MAIN SIGNAL LINE

R728

1K

R729

R725

Q711

1K

R723

1K

Q710

1K

Q711,Q710

B1AAGC000006

MUTTING SWITCH

R722
100K

R724
100K

FAN1

C730

50V3.3

C731

50V3.3

FAN2

R734

220

R777

C700

6.3V100

R700

18 1/2W

R701

56K

D705,D706

B0AACK000004

220

Q700

R702

100

D706

R703

D705

Q717,Q716

KTC3199GRTA

AMPLIFIER

C725

5600P

C722

5600P

R704

56K

C701

16V33

10K

Q700,Q702

B1AACF000063

SWITCH

C724

5600P

R744

15K

C721

5600P

R740

15K

R730
220K

R733

15K

R746

5.6K

R705

R742

5.6K

1200P

C714

0.027

10K

C712

R732

15K

Q717

Q716

KTA12710YTA

C723
25V1

R741

5.6K

R731

6.8K

Q714

Q701

SWITCH

M10V

C720
25V1

R706

4.7K

R745

5.6K

Q702

R747

1.5K

R743

1.5K

C713

25V2.2

R707

5.6K

R710

56K

R708

10K

R737

1.2K

C703

0.1

R709

820K

B1AACF000063

R711
820K

6.3V220

B0AACK000004

C702

50V2.2

MUTE_H

DCDET

T10V

7.5V

SW5V

Q703

SWITCH

C704

D707

Q517

KTC32030YTA

REGULATOR

R756

R757

22

22

C729

3300P

R738

15K

Q714,Q715

KTC3199GRTA

AMPLIFIER

R779

15K

C715

R735

1200P

220K

C717

0.027

Q715

R736

6.8K

C716

25V2.2

R739

1.2K

+9V

M10V

82

SCHEMATIC DIAGRAM-13

POWER CIRCUIT

-Vcc

+Vcc

HI_L IN

HI-R IN

IN GND

LO_L IN

12131415161718

C503 820P

C501 820P

C500 820P

C502 820P

R514 56K

C509 33P

R506 56K

C505 33P

R515 56K

C510 33P

R505 56K

C504 33P

LO_R IN

C515

0.01

SA-PM31P / SA-PM31PC

: -B SIGNAL LINE

: +B SIGNAL LINE

GND

-VccM

LO_R OUT

AC DET

LO_L OUT

HI_R OUT

10

11

789

-Vcc

6

: MAIN SIGNAL LINE

+Vcc

HI_L OUT

+Vcc

2

45

3

RSN315H41-P

-Vcc

1

IC500

POWER AMP IC

R761

22K

R760

22K

R763

5.6K

R762

5.6K

HI_R

RGND

RGND

LO_L

HI_L

LGND

LGND

LO_R

8

7

6

5

4

3

2

1

CN504

TO
MAIN CIRCUIT
(CN304) ON
SCHEMATIC
DIAGRAM-4

15K

15K

15K

R540

R533

R532

C518

0.01

Q520

B1BACG000023

REGULATOR

R541

15K

R542

3.3K

C538

16V22

3.3K

R543

R567

150

Q520

R544

C539

0.01

C751

16V10

5.6K

5.6K

R545

D526

B0AACK000004

R537

2.2K

D517

B0BA5R600016

R591

100

D531

Q502

B1BCCG000002

SWITCH

D525

B0AACK000004

Q508

KTC3199GRTA

SWITCH

R534

330

D508

MTZJ15BTA

C533

0.1

B0BA8R200005

R781

C752

R517

R550

R554

330

2SD0592ARA

REGULATOR

B1BACG000023

16V100

47K

B1BCCG000002

16V10

CURRENT CONTROL

Q502

C520

0.01

C521

16V33

330

330

Q514

C526
50V33

Q501

REGULATOR

C512

R572

R573

560

2.7K

R574

2.7K

C517

0.01

Q506

R526

10K

C528

0.01

C511

0.01

R512

150

Q505

R571

3.3K

R524 2.2

R520 2.2

R519 2.2

D520

B0BA9R600002

100K

R551

R556

2.2

R539

220

D524

B0BA01100004

R536

2.2

R568

KRA110MTA

CURRENT LIMITING

R518

1.2K

R561 330K

R562 390K

R548 220K

R780

47K

R549

2.2

R511

1K

D515

B0BA9R600002

C516

50V10

R569

27

15

Q509

SWITCH

R547 270K

C537

1000P

Q519

B1AAGC000006

SWITCH

R770

3.3K

D530

B0AACK000004

Q516

KTC3199GRTA

KTC3199GRTA

SWITCH (DCDET)

D500

B0FBAM000009

C507

50V2200

Q505

B1ACCF000063

SWITCH

C508

25V3300

R546

22K

Q515

SWITCH (DCDET)

Q516

1

2

C530

0.1

3

4

R565

12K

C506

50V2200

R566

10K

E501

SNE1004-2

GND1

GND1

GND2

SUB+B

S3

1

S4

2

3

4

5

6

CN506

TO
TRANSFORMER
CIRCUIT
(H503/JW503)
ON SCHEMATIC
DIAGRAM-14

83

SA-PM31P / SA-PM31PC

17.6. Transformer Circuit

SCHEMATIC DIAGRAM-14

TRANSFORMER CIRCUIT

D584,D587,D588,D589

CN505

GND2

1

H503/
JW503

PCONT

2

SYNC

3

SYS6V

4

-VP

5

FL2

6

FL1

7

2SB0621AHA

-VP REGULATOR

S3

1

S4

2

GND1

3

GND1

4

GND2

5

SUB+B

6

TO
MAIN CONTROL
CIRCUIT (H606)
ON SCHEMATIC
DIAGRAM-8

TO
POWER CIRCUIT
(CN506) ON
SCHEMATIC
DIAGRAM-13

C585

25V100

D584

D587

D589

D588

B0EAKM000117

Q579

C548

0.01

C586

100V10

D578

B0EAKM000117

C582

0.1

R595

R587

4.7K

R586

150

R580

18

2SC3940ARA

REGULATOR

SYS6V

1

R589

4.7

C587

63V100

D594

B0BA03000015

R581

18

Q577

C581

10V47

D592

B0EAKM000117

D593

Q578

B0EAKM000117

R585

22

C580

0.01

C588

63V100

K5G402A00025

: -B SIGNAL LINE

: +B SIGNAL LINE

D581

B0EAKM000117

R584

150

R576

10K

C583

0.01

FP502

K5G102A00023

FP501

C584

16V1000

R583

820

R577

10K

D582

17

16

15

14

13

12

11

10

D585

D586

B0BA6R600008

Q575

T501

G4C6BDD00003

9

8

B0EAKM000117

B0EAKM000117

R578

3.3K

C578

0.01

B0AACK000004

1

2

3

4

5

6

7

D579

B0EAKM000117

C575

50V4.7

D580

B0EAKM000117

D505

RL501

K6B1ADA00011

4

2

R503

3.3M

Q578

KRC102MTA

SWITCH

Q575

B1AAGC000006

ECONOMY SWITCH

T502

G4C2AAD00004

3

4

5

3

F1 125V 2.0A

1

FC2 FC1

Z501

ERZVA5Z471

1

2

341

L503

G0B371HA0005

JK501

AC IN

120V 60Hz

2

84

17.7. CD Loading Circuit

SCHEMATIC DIAGRAM-15

SA-PM31P / SA-PM31PC

RM11

UP/DOWN

MOTOR

M

CD LOADING CIRCUIT

IC11

C0GAG0000007

UP/DOWN MOTOR DRIVE

VREF

OUT2

RNF

123456789

Q1

B3NAA0000068

SENSOR

VREF

123456789

OUT1VMVCC

IC21

C0GAG0000007

LOADING MOTOR DRIVE

OUT2

RNF

OUT1VMVCC

C11

0.01

F_IN

C12

16V100

F_IN

GND

GND

R_IN

R_IN

: +B SIGNAL LINE

S5

CHANGE

S3

BOTTOM

S4

OPEN

S1

STOCK

S2

PLAY

+7.5V

PGND

CR16 SWITCH

DNGD

UP/DOWN F

UP/DOWN R

BOTTOM SW

POSTION SENS

LED

OPEN SW

LOAD F

LOAD R

STOCK SW

PLAY SW

CN1

1

2

3

4

5

6

7

TO

8

MAIN CIRCUIT

9

(CN305) ON
SCHEMATIC

10

DIAGRAM-6

11

12

13

14

RM21

LOADING

MOTOR

M

0.01

C21

C22

16V100

85

SA-PM31P / SA-PM31PC

18 Printed Circuit Board

18.1. CD Servo P.C.B.

ABCDEFG

1

A

CD SERVO P.C.B (REPV0039A)

2

3

4

5

6

7

TP14

TP16

D750

CN702

X

J734

C755

C727

TP19

X

C762

R760

R753

C745

C759

TP24

X

TP17

TP53
X

X

C722

TP31

C726

R721

X

C731

J715

XX

TP21

C721

C728

C733

X701

R714

C740

X

C753

X

TP18

TP13

X

17

16

15

14

J703

13

TP12

12

X

11

C743

10

9

8

7

6

5

R764

4

3

2

1

M701

TP7

TP8

TP9

XX

X

J733

C725

R718

TP22

R720

61

60

TP4

J723

TP74

TP76

X

C730

X

X

TP39

X

TP10

TP5

TP75

X

R717

X

X

TP73

TP1

X

C718

X

TP77
X

X

TP38

C741

R712

TP78

X

TP3

J732

J705

41

80

X

IC702

R723

R732

C744

C705

S701

REST.SW

TP2

X

TP37

X

C717

R711

40

1

X

C716

TP63

R731

C729

TP64
X

J712

J711

J722

C702

TP69

J739

X

TP62

C738

J724

J713

TP70

X

TP35

X

TP55

X

X

C704

J726

TP61

X

21

20

C746

R735

C703

C723

C724

C706

X

TP27

C742

C707

TP32

C760

TP71

TP33

X

TP68

X

X

J716

TP49

R715

X

R725

R739

C715

TP52

C752

X

28 22 21 15

M702

TP36

X

J702

R749

R727

R704

X

TP72

R766

TP28

X

R728

R729

R705

J744

X

X

TP29

J706

C739

TP51

R702

X

J707

C710

C747

R744

J728

R736

X

TP48

X

TP90

IC703

TP50

J708

C749

30

29

X

TP34

X

J709

R706

J710

TP60

16

81471

TP23

C713

X

14

X

J717

J721

J720

12

10

15

C714

J718

J731

J736

TP82

8

13

J740

R701

C701

TP87

X

J742

J741

J735

J738

J743

J737

J727

J725

J701

J719

TP83

X

X

1

CN701

2

3

4

TP89

5

6

11

X

7

Q701

C

9

B

E

R754

TP93

X

TP84

X

X

TP94

X

TP95

C734

C735

J714

8

9

PbF

86

18.2. Main P.C.B.

ABCDEFG

1

B

MAIN P.C.B (REPV0037A)

SA-PM31P / SA-PM31PC

PHONES

2

3

4

5

6

7

W216

W278

W305

17

15

13

11

9

7

5

3

1

R329

W454

R351

W383

W341

W426

W244

CN305

W245

R364

R363

W213

W212

W482

CN302

71

W403

CN308

16

14

12

10

8

6

4

2

W346

W214

W275

W409

W302

W377

C339

C338

C304

W453

W452

W441

W440

121110987654

13

23456

W206

R324

R323

Q301

W205

C

WA102

BE

WA114

R333

W292

W211

W202

W274

W273

R308

R389

C343

WA104

W337

C362

C368

CN309

21

191817161514131211109876543

20

W229

214

1

3

W332

W471

W373

CN301

C337

W203

R330

R332

W283

R360

W230

W387

C335

W224

Q303

C

W381

R312

W402

R480

R479

R381

C336

R379

BE

R378

C242

R310

W342

R331

Q302

W494

C244

D302

BE

C

R313

W401

1

2

C

BE

Q310

W219

W481

R334

W370

W217

R462

R325

WA113

R314

80

81

R385

Q309

BE

C

W480

W279

R307

23456789101112

C334

R326

W457

R386

W385

113

R320

R319

R318

C333

W291

R317

R316

R315

R417

R321

R309

W299

R322

R327

R209

C312

W298

R328

100

W422

WA100

IC302

C313

W294

W345

C327

R359

51

1

W270

R459

58

R357

R358

IC303

C325

14

WA110

WB201

50

WA111

WA107

C319

R301

C317

Q307

R352

C

R353

W450

BE

C329

R377

R461

R306

R382

W483

W343

W344

W375

CN304

234567

W386

31

30

C315

R354

R355

R356

WA214

WA414

C318

R388

C322

C603

L602

C619

L601

R453

W301

W303

W407

WA117

R391

WA118

WA103

C321

C323

C324

W232

W287

WA123

W350

81

WA122

W284

W288

W456

C314

Q308

C243

WB202

WA119

WA120

W455

C320

C

BE

W470

W349

W285

R414

WA112

W233

X301

X302

L300

W333

W490

C605

R339

W351

W286

R214

W408

R390

R335

L600

W491

R452

R341

C310

Q306

C

BE

C316

D305

C604

WA105

W492

R350

CN306

C342

WA108

1

JK600

R338

R342

WA106

R343

R344

R340

W237

C311

2

3

1

7

5

6

4

2

W221

C306

W421

R336

W472

R337

W451

R371

W201

C331

C308

W271

D304

D303

R349

W334

W380

1514131211109876543

CN

303

1

2

W236

WA101

R362

W400

R361

R372

C345

R450

W272

W331

C344

W296

W295

R440

W389

16

17

C359

R458

C340

R455

R367

R368

R369

R366

W277

R457

R365

W210

C341

W282

W378

W379

8

9

87

C308

6

SA-PM31P / SA-PM31PC

PHONES

7

600

W221

C306

R336

8

R337
2
06

3

4

0

D304

R349

4

GHI J K L M

1

5

4

2

W421

W472

W451

R371

W201

C331

W271

D303

W334

W380

15141312111098765

CN303

1

2

W236

WA101

R362

W400

R361

R372

C345

R450

W272

W331

C344

W296

W295

R440

W389

C359

16

17

R458

C340

R455

R367

R368

R369

R366

W277

R457

R365

W210

C341

W282

W378

W379

R419

R219

R375

W209

W220

WA115

WA116

Q305

C

BE

C303

R383

L301

R384

C358

R456

R347

0
8
3
C

R345

R346

Q304

C

C217

R370

R421

IC305

1

3

C381

45

W276

W293

W218

R418

C234

C367

C224

R218

C245

W234

CN101

23456789

W382

W424

C220

IC300

W458

13 24

R373

W420

W340

W339

W281

W280

W374

BE

R348

C201

Q201

C

BE

R201

D201

C424

C219

R221

C417

C419

C222

R224

R276

W413

C400

C200

(TO TUNER PACK Z301)

0
2
2
R

C214

C414

C420

112

W442

C374

C363

C364

C373

C372

C470

W257

C301

R374

W240

C270

WA121

C445

101

W347

2
2
4
C

Q400

BE

W411

C

R272

C471

R471

C472

C271

R271

C272

W259

R472

W336

W406

WB203

W256

R476

R420

R231

W228

R473

R274

R273

R474

W415

R222

R422

R424

Q200

C

BE

W335

W330

Q423

C

BE

C437

R230

R432

C240

Q222

C

BE

Q422

C

R475

W258

C441

R431

BE

Q424

C237

C241

W304

BE

C

BE

C440

Q224

C

C236

C326

R411

Q223

C

BE

C436

R211

W246

W238

R275

JK303

C411

2

C211

3

1

2
1
2
C

C412

L203

AUX

JK302

1+L

3+R

4-R

3-R

4+R

HIGH CHANNEL

SPEAKERS

LOW CHANNEL

SPEAKERS

2-L

1-L

2+L

JK301

PbF

88

18.3. Main Control P.C.B. and Panel P.C.B.

ABCDEFG

1

C

MAIN CONTROL P.C.B (REPV0037A)

SA-PM31P / SA-PM31PC

2

3

4

5

6

7

C600

CN606

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

D

PANEL P.C.B (REPV0037A)

15 40 44

6 7 8 9 10 11 12 17 18 19 2013 14 15 16 25 26 27 2821 22 23 24 33 34 35 3629 30 31 32 37 38 39

3

1

4

0

IC600

1

JW605

2

W634

TRACK UP

R607

1

S609

W632

W633

W631

W609

W606

W650

W605

W611

W686

W654

C617

R633

W607

W619

S610

TRACK DOWN

R608

C606

C613

R603

C622

W608

1

0

C614

FL600

3

0

2

1

2

0

C616

WA616

R619

D601

S613

SSEQ

W604

W610

W615

W617

C615

C621

W697

R634

R632

R631

L604

19

2345678

ALBUM UP

R609

1

1

C618

CN603A

91

8765432

H603B/JW603

W620

R629

Q600

C

B

E

S611

W696

W695

W653

W602

H601A/JW601

13

2

D600

W601

W630

W603

C602

S612

ALBUM DOWN

R610

W600

L603

R600

R601

WA615

W652

C601

W670

C620

W640

W651

R602

H606
/JW606

PbF

1

2

3

4

5

6

7

8

9

S619

OPEN/CLOSE

R611

VR600

C612

C611

S605

CD 5

R621

VOLUME

R606

R604

R605

13

S604

CD 4

R616

W616

S606

CD PLAY/PAUSE

R622

R615

S603

CD 3

R623

S607

TAPE

R614

S602

CD 2

R627

S608

TUNER

S601

CD 1

W618

8
0
6
C

S618

STOP

R620

C610

13

Z601

2

C609

PbF

89

SA-PM31P / SA-PM31PC

18.4. Power In P.C.B., Function P.C.B. and Deck Mechanism P.C.B.

ABCDEFG

1

E

POWER IN P.C.B (REPV0037A)

H601B/JW601

13

R636

R617

S615

SURROUND

D609

S614

POWER

PbF

2

S617

CD CHECK

R624

W621

R618

S616

AUX

3

4

5

6

7

F

FUNCTION P.C.B (REPV0037A)

S620

CD CHANGE

R640

H

DECK MECHANISM P.C.B (REPX0321H)

S973

CR02

PL+

J150

J13

J2

J6

D971

J4

PL-

J30

IC971

4

32

S972

HALF

R973

1

S621

REV

R639

J5

9

J140

8765432

CS971

J8

J16

J10

R972

PbF

J12

J1

J11

S971

MODE

S622

FWD

R626

JW605

J9

S623

REC

R628

122

PbF

1

S975

J7

RECINH_F

8

9

SOLENOID

90

18.5. Deck P.C.B. and Tape Eject P.C.B.

ABCDEFG

1

G

DECK P.C.B (REPV0016B)

SA-PM31P / SA-PM31PC

2

3

4

5

CP1301

1

2

3

4

5

C1102

R1064

R1203

WR1308B

E

C

C1317

R1333

IC1000

R1063

C1222

C1207

C1208

W1916

C1223

C1302

C1304

C1106

B

R1330

12

W1906

W1915

C1123

C1319

R1327

C1314

D1301

R1334

W1913

C1301

W1914

R1303

R1104

C1109

Q1309

E

C

C1312

C1316

C1371
R1371

C1308

B

R1329

W1912

R1332

C1320

R1338

C1305

W1911

C1307

Q1310

L1301

6

4

5

C1318

3

1

2

R1335

R1337

E

C

B

C1321

Q1317

C1323

W1921

C1202

C1201

111

C1221

22

R1101

C1101

C1105
R1103
C1107

W1919

R1061

C1203

C1205

W1918

IC1001

W1920

R1202

C1121

C1103

W1917

R1201

R1302

C1104

4

C1204

C1108

C1303

C1122

R1102

5

3

2

1

2

C1315

R1331

C1311

Q1312

B

R1328

L1302

C1324

Q1201

C1206

R1205

R1304

C1209

1

W1909

C

E

B
E

C1210

R1204

W1948

Q1303

W1910

Q1101

C

R1106

C1110

R1206

R1210

W1930

R1380

R1309

C

R1105

W1938

W1934

WR1903

W1935

W1977

C

W1908

R1305

R1207

E
B

R1107

2

E

B

Q1304

C

R1313

R1209

R1109

R1110

W1939

1

E

B

C

C1310

21

20

R1314

E

B

Q1302

W1907

Q1316

17

19

18

W1951

W1933

W1975

E

C

B

R1341

141516

W1945

W1905

W1976

R1374

11

13

10

12

W1942

W1931

R1345
R1342

C1326

R1344

Q1315

CN1305

7

9

8

6

W1946

E

C

B

Q1314

W1932

W1904

R1401

PbF

3

5

4

W1903

W1902

E

C

B

R1318

1

2

W1947

R1343

R1402

CP1902

W1941

W1937

R1403

1

2

3

4

5

6

7

8

9

W1928

W1929

R1404

R1405

6

7

8

9

I

TAPE EJECT P.C.B (REPV0016B)

1

2

WR1308A

S1901

TAPE EJECT

PbF

91

SA-PM31P / SA-PM31PC

18.6. CD Loading P.C.B.

ABCDEFG

1

L

CD LOADING P.C.B (REP3569A)

2

3

4

5

J16

2

4

6

8

10

12

14

PLAYSW

5

7

9

11

13

S2

1

3

CN1

RM11

UPDOWN

C12

1

IC11

9

8

7

C11

6

5

4

3

2

J13

S3

BOTTOMSW

Q1

6

7

8

9

S5

CHANGESW

S1

STOCKSW

RM21

LOADING_MOTOR

J14

C22

J21

C21

IC21

1234567

J11

J12

J15

9

8

S4

OPENSW

PbF

92

18.7. Power P.C.B.

ABCDEFG

1

J

POWER P.C.B (REPV0038A)

PM31...W518

CN504

W725

8

7

6

5

4

3

2

1

W806

2

3

C755

C756

1

2

3

4

5

6

7

8

9

10

11

12

13

1

2

3

4

5

6

7

R723

W783

W845

W846

W795

W847

B

R749

R748

R725

Q710

B

Q726

B

BCE

Q725

R799

R798

W726

C721

C705

N

Q704

CE

CE

W723

W796

CE

R713

W781

W851

W850

C725

R744

C724

W794

R742

4

5

6

7

8

CP501

CP502

W808

C722

R726

W780

W747

R791

C734

W749

9

W739

W803

W771

Q716

E

C

B

R789

W724

W793

W753

W775

W742

R740

E501

W721

C733

W820

W720

W809

W707

W741

W740

W743

R741

R790

R760

C714

R761

R762

R733

Q717

R746

Q719

C741

R768

R541

N

C720

E

C

B

W744

C743

R788

W715

C712

C736

C500

R732

R745

E

C

B

R769

N

C723

B

R730

R738

W717

R764

C503

R515
C510

R542

R540

R533

W819

R747

Q714

R731

R777

C737

W770

C515

C502

C501

R532
R514

C509

R543

W818

W778

W804

W805

W745

W746

W738

D704

R739

R743

R737

N

N

C716

C713

Q715

CEBCE

R736

C717

R779

C715

R734

W729

W711

Q711

E

C

R751

R722

B

E

C

C745

R721

B

Q718

R775

R767

R765

C739

C744

C742

C740

R506
C505

R545

W816

R544

W704

W821

R763

R548

D702

W779

W840

W772

D703

W700

R735

C506

R712

W712

C729

R724

C728

C747

R727

C749

58

IC501

C746

14

C710

R778

R547

D508

R546

R534

R550

R554

R754

R766

W831

W792

R750

C507

R756

C726

R720

W830

W800

W801

W802

C508

W849

C748

R505

C504

W790

W815

R566

W767

R757

Q721

B

CE

R773

R753

C709

C750

R752

W766

W768

W791

W848

Q720

E

C

B

IC500

W765

R780

W737

W701

R755

D709

D526

R562

W735

D500

W736

C731

C711

R776

R561

W705

W773

4-

3~

2~

1+

C738

W764

W706

W777

C702

R729

C727

R759

R771

W763

W776

R774

D707

D708

C751

W708

C530

R517

R709

C730

R728

R772

C518

D525

W852

W769

C704

R708

R758

R511

R549

R536

C511

Q508

B

W718

Q702

B

CE

R710

C536

W703

W714

D530

W797
W798

D700

R770

D517

Q517

118

CE

R704

W727

W751
W774

W716

D701

CB

C703

R551

E

C512

R512

Q703

R711

Q515

C537

Q519

E

C

B

R556

R539

D524

C526

R567

Q501

Q502

E

C

B

E

C

B

R565

W728

R537

Q514

CB

D515

D520

C521

R573

B

C

E

B

C

E

R707

E

C

B

W817

C528

C533

R572

Q700

Q516

W702

R781

E

R702

R701

R700

E

C

B

C520

R574

C538

R591

PbF

R518

R519

Q509

Q505

B

C516

C517

R571

R569

C701

C700

R703

R706

Q701

1

2

3

4

5

6

CN506

C539

E

C

B

CE

R568

W709

D706

CB

D531

W722

R524

R520

R526

Q506

E

C

B

C752

W710

R705

E

W713

E

C

B

Q520

SA-PM31P / SA-PM31PC

D705

93

SA-PM31P / SA-PM31PC

18.8. Transformer P.C.B.

ABCDEFG

1

K

TRANSFORMER P.C.B (REPV0038A)

2

3

4

AC IN

120V 60Hz

JK501

W500

W501

W503

W502

F1

125V 2A

T502

B-TRA

RM

FO

NS

)

(SU

1

Z501

2

T501

(MAIN TRANSFORMER)

L503

8 9 10 11 12 13 14 15 16 17

ER

3

4

5

FC2

RL501

1

17

23456

32

4

PRIMARY

SECONDARY

FC1

D581

D585

W561

W560

R583

R576

R577

D593

W505

D580

D587

C584

D582

C587

D586

Q578

C583

D594

R585

R581

R580

C585

Q575

R578

BCE

R503

W547

W546

W555

W548

FP502

W530

R595

FP501

C582

1A

W513

W514

D579

C578

D584

4A

C575

D589

D588

C588

D592

W545

W510

D578

Q579

R587

R586

R589

C548

W509

Q577

E

C580

C

B

R584

CN505

1

C581

2
3

4
5

6
7

D505

W507

C586

W549

W531

H503/
JW503

BCE

1

2

BCE

3

W532

4

W525

5

6

W562

PbF

5

6

7

8

9

CAUTION
RISK OF ELECTRIC SHOCK
AC VOLTAGE LINE.
PLEASE DO NOT TOUCH THIS P.C.B

94

19 Wiring Connection Diagram

CD SERVO P.C.B

CN702

17

16

.

.

.

.

.

.

.

.

.

.

.

.

.
.
.

2

1

.
.

M701

TRV MOTOR

M702

SPL MOTOR

CN701

2

1

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

16

15

SOLDER SIDE

H603B/JW603

9 . . . . . . . . . 1

PANEL P.C.B

SA-PM31P / SA-PM31PC

PbF

SOLDER SIDE

SOLDER SIDE

POWER-IN P.C.B

REC/PLAY
HEAD

PbF

123

H601B/JW601

OPTICAL PICKUP

WR1308B

21

PbF

21 . . . . . . . . . . 1

20. . . . . . . . . 2

CN1305

CN606

17

16

.

.

.

.

.

.

.

.

.

2

1

SOLDER SIDE

JW605

21

FUNCTION P.C.B

12

WR1308A

MAIN CONTROL P.C.B

CN603A

9 . . . . . . . . . 1

21

JW605

H601A/JW601

TAPE EJECT P.C.B

SOLDER SIDE

PbF

1 2 3

SOLDER SIDE

H606/
JW606

1

7

PbF

PbF

.
.
.
.
.

TO R/P Head

CP1301

2
4

1
3
5

SOLDER SIDE

DECK P.C.B

WR1903

21

+

-

MOTOR

PbF

CP1902

1

.
.
.
.

9

95

PbF

SOLDER SIDE

PL-PL+

SOLENOID

DECK MECHANISM P.C.B

9 . . . . . . . . . 1

CS971

SA-PM31P / SA-PM31PC

CN308

17

16

.
.
.
.
.
.
2

PHONE

CN303

MAIN P.C.B

.
.
.
.
.
.

1

JK600

1 2

PbF

CN101

FAN

1. . . . . . . . . . 10

CN302

7. . . . . . . . 1

CN504

8

.
.
.
.

1

CP501

1

.
.
.
.
.

13

CP502

1

.
.

7

14 . . . . . . 2

13 . . . . . . 1

CN305

21. . . . . . . . . . . 1

20 . . . . . . . . . 2

CN309

CN301

13 . . . . . . . . . . . . . . . . 1

POWER P.C.B

1. . . . . . . . . . 8

CN304

1
.
.
.
.
6

CN506

2. . . . . . . . 16

1. . . . . . . . . 17

CN306

SOLDER SIDE

PbF

Tuner Pack

14 . . . . . . 2

13 . . . . . . 1

CD LOADING P.C.B

SOLDER SIDE

CN1

JK303

JK302

JK301

AUX

High Channel

Speakers

Low Channel

Speakers

AC IN

120V 60Hz

JK501

PbF

T501

T502

SOLDER SIDE

TRANSFORMER P.C.B

SOLDER SIDE

96

CN505

1

.
.
.
.

7

H503/JW503

1

.
.
.
.

6

PbF

20 Illustration of IC’s, Transistors and Diodes

SA-PM31P / SA-PM31PC

BA5948FPE2 (28P)
AN7326K (22P)

1

RSN315H41-P (18P)

1

18

B1AAGC000006

B

C

E

2SC3940ARA

C1BB00000757 (24P)

1

C0DBZGC00067

5

4

1

2

3

B1BACG000023
B1BCCG000002

B

C

E

B3NAA0000068

4

3

2

1

4

1

2

C0HBB0000044 (40P)
MN6627953HB (80P)
C2CBJG000574 (100P)

1

C0GAG0000007 (9P)

1

B1ABGC000005
KRA102STA
KRC101STA
KRC102STA
KRC103STA
B1GBCFGG0001
B1GDCFJJ0002
B1ABCE000016
B1ADCF000001

B0ACCK000005

Cathode

3

Anode

A

C1AA00000612 (5P)

1

2SB0621AHA

E

9

C

B

B1GBCFGH0001
B1GDCFGH0002
B1ABCF000011

B0BC01000014
B0ACCE000003
B0BC6R700006

Ca

Anode

C0AABB000125 (8P)

1

4

5

5

CNB13030R2AU (4P)

1

8

2

3

4

2

3

4

1

KRA102MTA
KRC102MTA
KRA110MTA
B1ACCF000063
KTC3199GRTA

B

C

E

2SD0592ARA
2SD09650RA

KRC119STA

KTA12710YTA
KTA1504GRTA
KTC32030YTA

E

E

C

B

MAZ80560ML

Cathode

Cathode

Anode

Ca

A

A

Ca

B0FBAM000009

C

B

4

3

2

1

B0BA5R600016
B0BA9R600002
B0BA6R600008
B0BA01100004
B0BA8R200005
MTZJ15BTA

B0BA03000015

B0EAKM000117

B0AACK000004
MA729TX
MA2C16500E

B3ADA0000087
B3AAA0000487

Anode

ACa

Cathode

97

SA-PM31P / SA-PM31PC

21 Terminal Function of IC´s

21.1. IC702 (MN6627953HB) Servo
processor/ Digital signal
processor/ Digital filter/ D/A
converter

Pin No. Mark I/O Function

1 EXT0 I/O Extend input/output port 0
2 EXT1 I/O Extend input/output port 1
3 EXT2 I/O Extend input/output port 2
4 PWMSEL I PWM output selection input

(L: Direct; H: Tri-State
5 SPOUT O Spindle driver output signal
6 SPPOL O Spindle driver output signal
7 TRVP O Spindle driver output signal
8 TRVM O Spindle driver output signal
9 TRVP2 O Traverse driver output signal

2 (+)

10 TRVM2 O Traverse driver output signal

2 (-)

11 TRP O Traverse driver output signal

(+)

12 TRM O Traverse driver output signal

(-)

13 FOP O Traverse driver output signal

(+)

14 FOM O Traverse driver output signal

(-)

15 IOVDD3 - I/O power supply 3
16 DVDD1 - Power supply 1 for digital

circuit

17 DVSS1 - Digital circuit GND 1
18 ADPVCC I Power voltage monitor.

Power voltage input

19 TEIN I DSP traverse error signal

input

20 FEIN I DSP focus error signal input
21 CEA I/O HPF-Amp capacitance

connection terminal

22 RFENV O RF envelope signal monitor
23 FEOUT O FE Amp output
24 FEN I FE Amp reversal input
25 TEN I TE Amp reversal input
26 TEOUT O TE Amp output
27 VREF O VREF output
28 PD I APC Amp input
29 LD O APC Amp output
30 E I Tracking input signal 1
31 F I Tracking input signal 2
32 D I Tracking input signal 4
33 B I Tracking input signal 2
34 C I Tracking input signal 3
35 A I Focus input signal 1
36 DCDET I Detection HPF capacitance

terminal

37 RFVDD - RF Amp power supply
38 RESERVE - AVSS2

Pin No. Mark I/O Function

39 RFOUT O RF Amp output
40 RFIN I AGC input
41 CAGC I/O AGC control terminal
42 ARFOUT O AGC output (Audio RF)
43 AVSS2 - Analog circuit GND 2
44 ARFIN I RF signal input
45 DSLF O DSL loop filter
46 IREF I I (current), Reference input
47 PLLF O PLL loop filter
48 PLLF0 O PLL loop filter
49 AVDD2 - Analog circuit power supply 2
50 OUTL O LCH output signal
51 AVSS1 - Audio output circuit GND 1
52 N.C. - No Connection
53 AVDD1 - Power supply 1 for analog

circuit
54 OUTR O RCH output signal
55 DVSS2 - Digital circuit GND 2
56 IOVDD1 - I/O power supply 1
57 DVDD2 - Power supply 2 for Digital

circuit
58 REGON I Laser diode control (H: ON)
59 IOMODE I I/O switching setting input
60 NTEST I Test mode setting input (H:

ON)
61 TX O Digital audio interface output
62 FLAG O Flag signal output
63 MCLK I Micro-P serial command CLK
64 MDATA I Micro-P serial command

DATA
65 MLD I Micro-P serial command

LOAD
66 STAT O Status signal output
67 BLKCK O Subcode block clock
68 NRST I LSI reset input (L: RESET)
69 DVSS3 - Digital circuit GND 3
70 X2 O Crystal oscillator circuit

output
71 X1 I Crystal oscillator circuit input
72 IOVDD2 I I/O power supply 2
73 DQSY O Pack signal output for CD-

Text data
74 TXTD O CD Text signal output
75 TXTCK I External clock signal input for

CD-Text register
76 GIO0 I/O General purpose input/output

Terminal 0
77 GIO1 I/O General purpose input/output

Terminal 1
78 GIO2 I/O General purpose input/output

Terminal 2
79 GOUT0 O General purpose output

Terminal 0
80 GOUT1 O General purpose output

Terminal 1

21.2. IC703 (BA5948FPE2) IC 4CH DRIVE

Pin No. Mark I/O Function

1 IN2 I Motor Driver 92 Input
2 PC2 I Turntable Motor Drive Signal

(“L”: ON)

3 IN1 I Motor Driver (1) Input

98

Pin No. Mark I/O Function

4 PC1 - Traverse Motor Drive Signal

(“L”:ON)
5 N.C. - No Connection
6 N.C. - No Connection
7 N.C. - No Connection
8 N.C. - No Connection

Pin No. Mark I/O Function

9 PGND1 - Ground Connection (1) for Driver
10 PVCC1 I Power Supply (1) for Driver
11 D1- O Motor Driver (1) reverse - action

output

12 D1+ O Motor Driver (1) forward - action

output

13 D2- O Motor Driver (2) reverse - action

output

14 D2+ O Motor Driver (2) forward - action

output

15 D3- O Motor Driver (3) reverse - action

output

16 D3- O Motor Driver (3) forward - action

output

Pin No. Mark I/O Function

17 D4- O Motor Driver (4) reverse - action

18 D4+ O Motor Driver (4) forward - action

19 PVCC2 - Power Supply (2) for Driver
20 PGND2 - Ground Connection (2) for Driver
21 N.C. - No Connection
22 N.C. - No Connection
23 N.C. - No Connection
24 N.C. - No Connection
25 VCC I Power Supply Terminal
26 VREF I Reference Voltage Input
27 IN4 I Motor Driver (4) Input
28 IN3 I Motor Driver (3) Input

21.3. IC302 (C2CBJG000574) MICRO PROCESSOR

Pin No. Mark I/O Function

Pin No. Mark I/O Function

1 CH_SW I Change Switch (CR16)

2 TU_TUNED I Tuner tuned signal

3 TU_ST I Tuner Stereo signal

4 TU_CK I Tuner Serial Clock Input

5 TU_SDA I/O Tuner Serial Data Input

6 MBP1 O Microcomputer Beat Proof

Output 1 (CONTROL)

7 MBP2 O Microcomputer Beat Proof

Output 2 (CONTROL)

8 BYTE - External Data Bus Width Select

Input (Connect To Ground)

9 CNVSS/ - Flash Mode Terminal

(Connected To Ground)
10 XCIN - 32.768 kHz Sub Clock
11 XCOUT - 32.768 kHz Sub Clock
12 /RESET - Reset Input (ACTIVE L)
13 XOUT - 10 MHz Main Clock
14 VSS - Ground (0V)
15 XIN - 10 MHz Main Clock
16 VCC - Power Supply (+5V)
17 /NMI - Connect to Vcc (+5V)
18 RMT I Remote Control Input
19 BLKCK I CD Block Clock Input (Inverted)
20 SYNC I AC Failure Detect Input
21 MUTE_H O HIC Mute
22 EE_CS/ O EEPROM Chip Select
23 EE_CLK O EEPROM CLOCK
24 MUTE_T O H=Tuner muting
25 MUTE_X O A=AUX muting
26 FL_CS1 O FL Driver Chip Select (Master)
27 NC - No Connection
28 FL_CLK O Serial Clock to FL Driver
29 /FL_RESET O Reset Input (ACTIVE: L)
30 FL_DOUT O Serial Data To FL Driver

(Output)
31 RXD - No Connection
32 TXD - No Connection
33 SCLK - No Connection
34 BUSY - No Connection
35 NC - No Connection
36 NC - No Connection
37 NC - No Connection
38 NC - No Connection
39 MCLK O CD Command CLK Output
40 MUTE_A O Audio Mute
41 EPM - ­42 MDATA O CD Command Data Output
43 MLD O CD Command Load Output/
44 RDS_CLK I RDS Clock Input

45 RDS_DAT I RDS Data Input
46 CE - ­47 DCDET I DC Detect Input
48 STATUS I CD Servo LSI Status Input

49 PCONT O Main Transformer Control

50 PLAY_SW I Play Switch (CR16)
51 ST_SW I Stock Switch (CR16)
52 OP_SW I Open Switch (CR16)
53 POS I Position Switch (CR16)
54 BT_SW I Bottom Switch (CR16)
55 M1_R O Changer Motor 1 Reverse

56 M1_F O Changer Motor 1 Forward

57 M2_R O Changer Motor 2 Reverse

58 M2_F O Changer Motor 2 Forward

59 REC O when record circuit is operating

60 KEY_LED O Dimmer ON=L, Dimmer Off=H­61 PHOTO I PHOTO (SG Mechanism only)
62 VCC - Power Supply (+5V)
63 EE_DAT I/O EEPROM DATA
64 VSS - Ground (0V)
65 DMT O Deck Mute at mecha transition

66 NC - ­67 ASP_CLK O ASP CLK
68 ASP_DAT O ASP DATA
69 N.C. - No Connection
70 N.C. - No Connection
71 N.C. - No Connection
72 N.C. - No Connection
73 N.C. - No Connection
74 N.C. - No Connection
75 N.C. - No Connection
76 N.C. - No Connection
77 N.C. - No Connection
78 N.C. - No Connection
79 /CD O CD POWER CONTROL (Active

80 CD_RST O CD Reset Output
81 N.C. - No Connection
82 /RESTSW I CD Limit Switch Input for the

83 N.C. - No Connection
84 HP_SW I Headphone Detect SW Input
85 SSEQ_LED O Super Sound EQ LED Control

SA-PM31P / SA-PM31PC

output

output

(Inverted)

Output

Control

Control

Control

Control

DURING RECORDING=H

L=mute OFF, H=mute ON

Low)

Most Inner Point (Active Low)

99

SA-PM31P / SA-PM31PC

Pin No. Mark I/O Function

86 RE_LED O MP3/WMA Re-master Control
87 MOTOR O MOTOR Control Output L=OFF,

88 PLUNGER O Deck PLUNGER Control Output

89 DECK_AD1 I DECK AD Input 1
90 DECK_AD2 I DECK AD Input 2
91 REG1 I Region Setting 1
92 KEY3 I KEY3 INPUT
93 KEY2 I KEY2 INPUT
94 KEY1 I KEY1 INPUT
95 VOL_JOG1 I Volume Jog 1
96 AVSS - Analog Power Supply Input

97 N.C. - No Connection
98 VREF - Reference for A-D (5V)
99 AVCC - Analog Power Supply Input

100 N.C.

Demo selector

H=ON

L=OFF, H=ON

(Connect to GND)

I (H=default demo on, L=default

demo off)

100