1. Specifications are subject to change without notices. Mass and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
n System : SC-PM21PC-SMusic center: SA-PM21PC-S
Speaker: SB-PM21E-MJ
CONTENTS
Page Page
1 Safety Precautions
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 Operation Procedures
9 Information on CD & MP3
10 Assembling and Disassembling
10.1. Disassembly flow chart
10.2. Disassembly of Side Panel L & R
10.3. Disassembly of Top Cabinet Unit
10.4. Disassembly of Deck Mechanism and Tape Eject P.C.B
10.5. Disassembly of Headphone P.C.B
10.6. Disassembly of Front Panel Assembly
10.7. Disassembly of Panel P.C.B
10.8. Disassembly of Rear Cabinet
10.9. Disassembly of Tuner Pack
10.10. Disassembly of Main P.C.B
10.11. Disassembly of Powe r P.C.B
10.12. Disassembly of Speak er Termi nal P.C.B
10.13. Disassembly of Trans forme r P.C.B
10.14. Disassembly of CD Mechanism
10.15. Checking Procedure for Each Major P.C.B.
10.16. Procedures of Repla cing Trave rse Base (Unit), Driving
Gear, and Cam Gear (CD Mechanism Unit)
10.17. Procedures for Repla cing Optica l Pickup (CD Mechanism
Unit)
10.18. Procedures for Repla ceme nt Traverse Gear A and
Traverse Gear B (CD Mechanism Unit)
4
4
6
6
6
6
7
8
9
10
11
12
12
13
13
13
14
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15
15
15
16
16
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18
19
19
22
23
10.19. Procedure for Repla cing Casse tte Holde r
10.20. Procedure for Repla cing Pinch Roller and Head Block
(Deck Mechanism Unit)
10.21. Procedure for Repla cing Motor , Capstan Belt A, Capst an
Belt B, and Winding Belt (Deck Mechanism Unit)
10.22. Procedure for Repla cing Parts on Deck Mechanism PCB
10.23. Handling of casse tte tape jam
11 Service Positions
11.1. Checking procedure
11.2. Checking the major P.C.B.
12 Self Diagnostic Function
12.1. Self-diagnosis Function
12.2. Clearing all error code
12.3. Cancelling the Self-Diagnostic mode
12.4. Setting of doctor mode
13 Procedure for Checking Operation of Individual Parts of Deck
Mechanism Unit
13.1. Operation Check with Cassette Tape
13.2. Operation Check without Cassette Tape
14 Measurement And Adjustments
14.1. Cassette Deck Section
15 Voltage Measurement and Waveform Chart
15.1. Voltage Measureme nt
15.2. Waveform
16 Block Diagram
16.1. CD Servo Block
16.2. Main Block
17 Notes of Schematic Diagram
18 Schematic Diagram
18.1. CD Servo Circuit
18.2. Main Circuit and Tuner Extent Circuit
18.3. Panel Circuit
0.5 W
24
24
25
27
27
29
29
29
30
30
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32
32
37
37
37
39
39
41
41
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44
44
46
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51
51
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18.4. Deck Circuit, Deck Mechanism Circuit and Tape Eject
Circuit
18.5. Power Circuit
18.6. Transformer Circuit, Headphone Circuit and Speaker
Terminal Circuit
19 Printed Circuit Board
19.1. CD Servo P.C.B.
19.2. Main P.C.B.
19.3. Tuner Extent P.C.B, Headphone P.C.B and Speaker
Terminal P.C.B.
19.4. Panel P.C.B.
19.5. Deck P.C.B and Deck Mechanism P.C.B.
19.6. Power P.C.B.
19.7. Transformer P.C.B and Tape Eject P.C.B.
20 Wiring Connection Diagram
21 Illustration of IC 痴, Transistors and Diodes
22 Terminal Function of ICエs
58
60
22.1. IC702 (MN662795 3HB) Servo processor/ Digital signal
processor/ Digital filter/ D/A converter
61
62
62
63
22.2. IC703 (BA5948FPE2) IC 4CH DRIVE
22.3. IC803 (MN101C49GHA) MICRO PROCESSOR
23 Troubleshooting Flowchart (CD Section Circuit)
24 Parts Location and Replaceme nt Parts List
24.1. Deck Mechanism
65
66
67
68
69
24.2. CD Loading Mechanism
24.3. Cabinet
24.4. Electrical Part List
24.5. Packaging Materials & Accessories Parts List
24.6. Packaging
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SA-PM21PC
1 Safety Precautions
1.1. GENERAL GUIDELINES
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, ensure that all the protective devices such as insulation barriers, 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 1MΩ and 5.2Ω.
When the exposed metal does not have a return path to the chassis, the reading must be
.
Fig. 1
1.1.2. LEAKAGE CURRENT HOT CHECK (See Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15µF capacitors, between each exposed metallic part on the set and a
good earth ground such as a water pipe, as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may
be used to make the hot checks, leakage current must not exceed 1/2 milliamp. should the measurement is outside of the limits
specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned
to the customer.
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1.1.3. Caution for fuse replacement
SA-PM21PC
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SA-PM21PC
2 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C839 & C840 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 120 V, 60 Hz in NO SIGNAL mode should be ~200 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).
·When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the
soldering points with the Pb free solder until it melts enough.
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SA-PM21PC
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.
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SA-PM21PC
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.
3. Take care not to apply excessive stress to the flexible
board (FFC board) (Fig 6.1).
4. Do not turn the variable resistor (laser power
adjustment). It has already been adjusted.
Fig 6.2
Fig 6.1
l Grounding for electrostatic breakdown prevention
1. Human body grounding (Fig 6.2)
Use the anti-static wrist strap to discharge the static
electricity from your body.
2. Work table grounding (Fig 6.2)
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).
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.
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7 Accessories
Note : Refer to Packing Materials & Accessories (Section 24.5) for part number.
Remote control
AC cord
FM indoor
antenna
SA-PM21PC
AM loop antenna
9
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SA-PM21PC
8 Operation Procedures
10
Page 11
9 Information on CD & MP3
SA-PM21PC
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SA-PM21PC
10 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”.
10.1. Disassembly flow chart
The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the
servicing.
To assemble the unit, reverse the steps shown in the chart below.
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10.2. Disassembly of Side Panel L &
R
Step 1 : Remove 4 screws.
Step 2 : Remove 1 screw.
Step 3 : Remove the side panel (R) as arrow shown (Be careful
of the catches).
SA-PM21PC
Step 1 : Remove 1 screw.
Step 2 : Release catches at both ends.
Step 3 : Lift up the top cabinet unit, push backward as arrow
shown and flip top cabinet unit sideway.
Step 4 : Remove 4 screws.
Step 5 : Remove 1 screw.
Step 6 : Remove the side panel (L) as arrow shown (Be careful
of the catches).
10.3. Disassembly of Top Cabinet
Unit
· Follow the (Step 1) - (Step 6) of Item 10.2.
Step 4 : Detach the connectors CN504A and FFC CN804.
10.4. Disassembly of Deck
Mechanism and Tape Eject
P.C.B
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
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SA-PM21PC
Step 1 : Remove 1 screw.
Step 2 : Release the clutch.
Step 1 : Remove 1 screw.
Step 2 : Release the clutch.
10.6. Disassembly of Front Panel
Assembly
Step 3 : Remove 4 screws.
Step 4 : Push the lever as arrow shown to open the cassette lid
and remove the deck mechanism unit.
10.5. Disassembly of Headphone
P.C.B
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
Step 1 : Detach the connector CN900B .
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
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Step 2 : Detach the FFC CN901B.
SA-PM21PC
Step 1 : Remove 10 screws.
Step 2 : Remove the Volume Knob.
10.8. Disassembly of Rear Cabinet
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
Step 3 : Release 3 Claws.
Step 4 : Remove the front panel assembly as arrow shown.
10.7. Disassembly of Panel P.C.B
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.6.
Step 1 : Remove 6 screws.
Step 2 : Remove the rear cabinet as arrow shown.
10.9. Disassembly of Tuner Pack
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 2) of Item 10.8.
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SA-PM21PC
Step 1 : Detach the connector CN805A and remove the tuner
pack as arrow shown.
10.10. Disassembly of Main P.C.B
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.6.
·Follow the (Step 1) - (Step 2) of Item 10.8.
Step 2 : Detach the connector CN803A, CN808A.
Step 3 : Detach the connector CP800.
Step 4 : Remove the Main P.C.B as arrow shown.
10.11. Disassembly of Power P.C.B
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 2) of Item 10.8.
Step 1 : Detach the FFC CN801.
Step 1 : Detach the connector CN505B.
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SA-PM21PC
Step 2 : Remove 1 screw.
Step 3 : Detach the connector CN503A, CN508A, CN501B.
Step 4 : Remove the Power P.C.B as arrow shown.
10.12. Disassembly of Speaker
Terminal P.C.B
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 2) of Item 10.8.
·Follow the (Step 1) - (Step 2) of Item 10.10.
·Follow the (Step 2) - (Step 4) of Item 10.11.
Step 1 : Remove 1 screw.
Step 2 : Release the clutch.
Step 3 : Remove the Speaker Terminal P.C.B as arrow shown.
10.13. Disassembly of Transformer
P.C.B
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 2) of Item 10.8.
·Follow the (Step 1) - (Step 4) of Item 10.11.
Step 1 : Detach the connector CN900B.
Step 2 : Remove 4 screws.
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SA-PM21PC
10.14. Disassembly of CD
Mechanism
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.6.
·Follow the (Step 1) - (Step 2) of Item 10.8.
·Follow the (Step 1) - (Step 4) of Item 10.10.
Step 1 : Remove 4 screws.
Step 2 : Remove the Main P.C.B Support.
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10.15. Checking Procedure for Each
Major P.C.B.
10.15.1. Replacement of the Power
Amplifier IC
·Replacement of the Power Amplifier IC
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 2) of Item 10.8.
·Follow the (Step 1) - (Step 4) of Item 10.11.
SA-PM21PC
10.16. Procedures of Replacing
Traverse Base (Unit), Driving
Gear, and Cam Gear (CD
Mechanism Unit)
10.16.1. Disassembly of the Disc Tray.
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.6.
·Follow the (Step 1) - (Step 2) of Item 10.8 .
·Follow the (Step 1) - (Step 4) of Item 10.10.
·Follow the (Step 1) - (Step 2) of Item 10.14.
Step 1 Remove 5 screws.
Step 2 Unsolder the terminals of Power Amp IC (IC300, IC500)
and replace the component.
Step 3 Unsolder the terminals of Transistor (Q503) and replace
the component.
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SA-PM21PC
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SA-PM21PC
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SA-PM21PC
10.17. Procedures for Replacing
Optical Pickup (CD Mechanism
Unit)
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.6.
·Follow the (Step 1) - (Step 2) of Item 10.8.
·Follow the (Step 1) - (Step 4) of Item 10.10.
·Follow the (Step 1) - (Step 2) of Item 10.14.
·Follow the (Step 1) - (Step 4) of Item 10.16.1.
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SA-PM21PC
10.18. Procedures for Replacement
Traverse Gear A and Traverse
Gear B (CD Mechanism Unit)
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.6.
·Follow the (Step 1) - (Step 2) of Item 10.8.
·Follow the (Step 1) - (Step 4) of Item 10.10.
·Follow the (Step 1) - (Step 2) of Item 10.14.
·Follow the (Step 1) - (Step 2) of Item 10.16.1.
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SA-PM21PC
10.19. Procedure for Replacing
Cassette Holder
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.4.
10.20. Procedure for Replacing Pinch
Roller and Head Block (Deck
Mechanism Unit)
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
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· Follow the (Step 1) - (Step 4) of Item 10.4.
SA-PM21PC
10.21. Procedure for Replacing
Motor, Capstan Belt A,
Capstan Belt B, and Winding
Belt (Deck Mechanism Unit)
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.4.
·Follow the (Step 1) - (Step 4) of Item 10.20.
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SA-PM21PC
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10.22. Procedure for Replacing Parts
on Deck Mechanism PCB
·Follow the (Step 1) - (Step 6) of Item 10.2.
·Follow the (Step 1) - (Step 4) of Item 10.3.
·Follow the (Step 1) - (Step 4) of Item 10.4.
SA-PM21PC
10.23. Handling of cassette tape jam
· Follow the (Step 1) - (Step 6) of Item 10.2.
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SA-PM21PC
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11 Service Positions
11.1. Checking procedure
Note:
For the disassembling procedure, see the section 10.
11.2. Checking the major P.C.B.
SA-PM21PC
1. Disassembly of Side Panel L & R
2. Disassembly of Top Cabinet
3. Disassembly of Deck Mechanism P.C.B and Tape Eject
P.C.B.
3. Press and hold the [STOPn] key of the main set for more than 2 seconds. While pressing this key, press the FF key on the main
set for another 2 seconds to enter into the self-diagnosis mode. The FL will display : [TEST_ _xxx]
Note:
Even if [STOPn] key of the main set is pressed while the self diagnosis mode is on, function will not be switched. Instead,
confirmation of error numbers will begin.
12.1.2. Display Location
mode with no CD or cassette loaded.
Figure 12-1
12.1.3. Error Code Display
·At the self-diagnosis mode, error codes will be displayed when [STOPn] key at the main unit is pressed.
Note:
Error numbers display is due to error symptom encountered during normal operation of unit. These error codes will be
“remembered” and stored.
·Example: [TEST_ _H01] (the display shall be retained)
·To exit from the self-diagnosis mode, execute power OFF operation.
·Even at power OFF operation, this error numbers shall not be cleared (the number can be cleared only at the start up of micro-
p after reset).
· If repeating self-diagnosis, add the newly detected errors only without deleting errors which have been detected before.
12.1.4. Self-diagnosis mode Deck Mechanism
· Activate the Self Diagnosis mode for the Deck and the following Self Diagnosis will be conducted.
Error CodeDescription
H01:If MODE SW abnormal is detected during normal operation, it will be memorized. The detection and memory
1. Activate the self diagnosis mode with the deck unloaded.
2. The test mode displayed will be made and detection shall be executed to check RECINH SW, HALF SW are in the OFF state.
3. Slot a cassette tape (with recording preventive tab present) into the deck and loading the cassette (HALF SW = ON).
4. After this instant with the cassette loaded in, RECINH SW, HALF SW will be checked and confirmed at this stage by the
software. Press FF key to proceed the self-diagnosis. The FF operation will stop automatically after 3 seconds. If abnormal
operation is detected, the tape will stop automatically after 1 second. During the FF operation, the Reel Pulse will be checked
shall be done for Deck.
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SA-PM21PC
by the software.
5. After the tape stops, the Error codes will be displayed by toggling the STOPn key. For more detail explanation, refer to the
(Figure 12-2).
CrO2, METAL type cassette with the recording
tab on the right side removed.
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 )
6Self-diagnostic mode is stopped by pressing
the [STOPn] Key.
7To clear all the abnormalities in the memory,
press the [STOPn] Key for more than 5 Sec
while the self-diagnostic mode is stopped.
8To cancel the self-diagnostic mode press the
[POWER] Key.
REW shall be executed for 2 sec, afterwhich STOP.
Check the following.
{ F.REC INH SW } is ON
{ HALF SW } is ON
Reel pulse toggles between H & L.
TPS operation is executed. Check the following.
{ F.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
{ HALF SW } is ON
LCD shall display the abnormality item code, when the STOP key is pressed,
it shall display the abnor mality item code in the following sequence.
[ TEST H 0 1 ] [ TEST H 0 2 ] [ TEST H 0 3 ]
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,[ TEST ] is
displayed.
POWER is OFF.At the next POWER ON, normal operation shall be executed.
· As HALF SW solder point and RECINH SW solder point are located close to each other, it’s necessary to check the shorting
between the adjacent points. For this purpose, operation has to be executed twice using two kind of cassettes, i.e. a cassette
with recording preventive tabs for both Sides A/B and a cassette with a recording preventive tab for only either one side of Side
A/B.
12.1.5. Error Code for CD Mechanism
Error codePossible symptomPossible cause
H01DECK opera tion
abnormal (reel motor,
solenoid, and MODE
SW)
F15CD REST_SW
abnormal
H15CD OPEN_SW
abnormal
F26Communication
between CD servo LSI
and microp abnormal
· During normal operation, if mechanism error process is executed once by mode switch against the
same deck operation, it is judged as mechanism abnormality and this is memorized as an error.
·Conditions for judging mechanism error:
− Mode switch ON is not detected 800 ms after plunger activation for PLAY / REC process.
− Mode switch ON is not detected 800 ms after plunger activation for FF / REW process. Or, Mode
switch OFF is not detected 800 ms after plunger activation after detecting Mode SW ON. Or,
Mode Switch ON is not detected 800 ms after detecting Mode switch OFF.
− If Mode switch comes ON at STOP / PAUSE state (normal condition), this is judged as an Error:
1. Main purpose for this Self Diagnosis is to diagnose a partial short of the deck.
2. Mechanical error process caused by EJECT operation will not be counted.
3. This error number can be cleared only at the start up of micro-p reset.
· At initial setting of CD traverse position, if REST SW ON is not detected even though the fail safe
timer time is over (10 sec), this is memorized as an error and the error number can be cleared only
at the start up of micro-p after reset.
· During normal operation, if CD OPEN SW ON is not detected within 4 sec, then H15 will be
memorized in memory. The error code can be cleared only at the start up of micro-p after reset.
· At the time of switching to CD function, SENSE = H will be detected using DTMS system setting
command. If the error is memorized when SENSE = L is not detected within fail safe timer time (20
sec), [F26] will be displayed simultaneously. This display will be retained if the power is ON and at
CD function. If this error occurs, CD operation afterward cannot be executed as in the case of
[NO.DISC.].
· This error number can be cleared only at the start up of micro-p after reset.
12.2. Clearing all error code
1. Press and hold STOP button for 5 seconds.
2. FL indicator shows “CLEAR” for 1 second and change to “TEST”.
12.3. Cancelling the Self-Diagnostic mode
1. Press the “Power” button to turn off the system. Press the “Power” button again to turn on the system.
12.4. Setting of doctor mode
1. At any more (CD, TAPE, TUNER).
32
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SA-PM21PC
2. Press and hold [STOPn] button for at least 2 seconds, follow by [4] and [7] from the remote control.
3. When the Doctor Mode is activated the FL display will show the
symbol at the 5thdigit. At the same time, the micro-p’s
version number (base 10) and EEPROM’s checksum (base 16) will be displayed for 1 sec. After displaying the EEPROM
information for 1 sec, the display will return to the normal Doctor mode display
4. However, if the EEPROM was not detected, it will not display the EEPROM’s checksum information . The FL will display microp’s version for 1 sec and return to normal Doctor Mode display.
Note:
Within the Doctor Mode display, at any of the test modes, if input [4] and [7] from the remote control while press [STOPn]of
main set, the micro-p’s version number and EEPROM information will be displayed for 1 sec and then returned to the normal
doctor mode display.
12.4.1. Inspection item list
Test NumberTest ItemOperation keys (Remote Controller Keys)
·If entering Doctor Mode by numeric buttons, PRESET EQ and SURROUND will be set to OFF.
·In case of error, all the segments of FL will blink (0.5 sec ON/OFF) and Doctor Mode shall be retained.
·The operation key used for the test follows closely with the test items as far as possible to facilitate quick testing to be
carried out.
·The [STOPn] key on the remote controller when used in any test mode will end the current test operations.
·All keys mentioned to initiate Doctor Mode’s test items refer to remote controller keys, unless otherwise mentioned.
·When plugging out from Doctor Mode and then plugging in back. It will reset start.
·The test cancellation special key [0] will end the current test operations but it will remain in Doctor Mode. When used, the
display shows the word [CANCEL] for 2sec, and then returns to Doctor Mode display.
12.4.2. CD Unit Loading Test (Reliability test 1)
·Putpose : To test CD Unit Loading (OPEN / CLOSE aging test) function.
− The following operation will be carried out.
·Procedures :
1. Enter into doctor mode (Refer to section 12.4)
2. Press [
10] followed by [1] & [1] on the remote control.
33
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SA-PM21PC
3. After a few times, the FL shall display as below:
Special Note:
Due to certain reasons, when the following conditions occur, the aging will stop but the count value shall be maintained:
· During OPEN operation, after a certain timing, the CD does not open in the Open position. (After REST SW is OFF, the CD
OPEN SW did not turn ON after 4s.)
— Do the CLOSE operation, stop the aging test at CLOSE condition.
· During CLOSE operation, after a certain timing, the CD does not close in the CLOSE position. (After CLOSE operation, REST
SW was not turned off in 4s.)
— Do the OPEN operation, stop the aging test at OPEN condition
12.4.3. CD Unit Traverse Test (Reliability test 2)
·Purpose : (Access Inner Outer Disc aging test) To test CD Unit traverse reliability.
− The following operation will be carried out.
·Procedures :
1. Enter into doctor mode (Refer to section 12.4)
2. Press [
10] followed by [1] & [2] on the remote control.
34
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SA-PM21PC
3. After a few times, the FL will display as shown below:
Special Note :
Due to certain reasons, when the following conditions occur, the aging will stop but the count value shall be maintained:
·After 10s, the Disc Access has not yet complete.
·Out of Focus for more than 2s.
12.4.4. CD Unit Combination Test (Reliability test 3)
· Purpose : This test is the combination of the CD OPEN/CLOSE operation and the Inner and Outer Disc Access operation aging
test. (Mainly used for CD unit reliability test)
− Operation : During Doctor Mode, when the keys [
the following operation will be carried out.
· Procedures
1. Enter into doctor mode (Refer to section 12.4)
2. Press [
10] followed by [1] & [3] on the remote control key, the following operation will be carried out:
10] followed by [1] & [3] are being pressed using the remote control key,
3. After a few times, the FL will display as shown below:
Special Note :
Due to certain reason, when the following conditions occur, the aging will stop but the count value shall be maintained:
· During OPEN operation, after a certain timing, the CD does not open in the OPEN position. (After REST SW is OFF, the CD
OPEN SW did not turn ON after 4s.)
· During CLOSE operation, after a certain timing, the CD does not close in the CLOSE position. (After CLOSE operation, REST
35
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SA-PM21PC
SW was not turned off in 4s.)
·After 10s, the Disc Access has not yet complete.
·Out of Focus for more than 2s.
12.4.5. Cold start setting
(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“---------”isdisplayed in the FL for 2 seconds.
36
Page 37
13 Procedure for Checking Operation of Individual Parts of
Deck Mechanism Unit
13.1. Operation Check with Cassette Tape
1. Pull up the EJECT lever using a rubber band. (Fig. 6)
2. Supply DC5V to MOTOR. (→ MOTOR rotates.) (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) (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.
SA-PM21PC
13.1.1. Connection Status between Mechanism and Power Supply (Motor, Plunger)
13.1.2. Operative Parts of Deck Mechanism Unit (EJECT lever fitted with rubber band,
Plunger/Rib operation)
Fig. 6
13.2. Operation Check without Cassette Tape
1. Pull up the EJECT lever using a rubber band. (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. (Fig. 7)
37
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SA-PM21PC
Fig. 7
38
Page 39
14 Measurement And Adjustments
14.1. Cassette Deck Section
14.1.1. Requirements
·Test tape (QZZCFM) (QZZCWA T)
·Normal blank cassette tape (QZZCRA)
·Digital frequency counter
·Oscilloscope
·Electrical voltmeter
·Headphone jack output jig (Fig. 8)
14.1.2. Setting of Unit
·VOLUME: MAX
14.1.3. Preparations
1. Apply under [10. Assembling and Disassembling].
2. Remove 4 screws from the mechanism unit to disassemble. under [10. Assembling and Disassembling].
3. Connect the headphone jack output jig (Fig. 8) to headphone jack.
SA-PM21PC
Fig. 8
Fig. 9
14.1.4. Tape Speed Adjustment
· Normal speed adjustment (only during forward playback)
(Product reference value: 3,000±90Hz)
1. Connect a frequency indicator. (Fig. 12)
2. Playback the middle portion of the test tape (QZZCWA T).
3. Adjust the motor screw so that the following output level is produced. (Fig. 10)
Adjustment Range: 3,000 ± 90Hz (a constant speed)
39
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SA-PM21PC
14.1.5. Bias Voltage Check
1. Connect an electrical voltmeter. (Fig. 9) (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: 16 ± 3mV
Fig. 10
Fig. 11
/)] button, press [TAPE ()] button to pause the recording mode. (Repeat
Fig. 12
14.1.6. Bias Frequency Check
1. Connect a digital frequency counter (Fig. 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
40
Page 41
15 Voltage Measurement and Waveform Chart
Note:
· Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance)
with the chassis taken as standard.
Therefore, there may exist some errors in the voltage values, depending on the internal impedance of the DC circuit tester.
· Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point
because it may differ from actual measuring value due to difference of Measuring instrument and its measuring condition
and product itself.
15.1. Voltage Measurement
SA-PM21PC
CD SERVO P.C.B.
Ref No.
MODE1234567891011121314151617181920
CD PLAY1.61.61.63.31.601.601.601.601.803.31.501.61.81.7
STANDBY00000000000000000000
Ref No.
MODE2122232425262728293031323334353637383940
CD PLAY1.61.61.71.71.71.91.70.22.42.02.01.81.81.81.81.63.300.82.1
STANDBY00000000-0.300000000000
Ref No.
MODE4142434445464748495051525354555657585960
CD PLAY1.61.301.61.60.81.41.43.31.501.53.01.503.31.53.303.3
STANDBY00000000000000000000
Ref No.
MODE6162636465666768697071727374757677787980
CD PLAY003.13.13.12.603.201.6-3.3-001.71.61.63.33.3
STANDBY00000000000000000000
Ref No.
MODE1234567891011121314151617181920
CD PLAY1.601.60000007.54.33.53.53.53.13.93.63.57.60
STANDBY00000000000000000000
Ref No.
MODE2122232425262728
CD PLAY7.60007.61.71.71.7
STANDBY00000000
IC702
IC702
IC702
IC702
IC 703
IC 703
MAIN P.C.B.
Ref No.
MODE12345678
CD PLAY4.54.44.404.44.44.58.8
STANDBY00000000
Ref No.
MODE1234567891011121314151617181920
CD PLAY4.44.44.44.44.44.44.44.44.44.44.40008.94.44.44.44.44.4
STANDBY00000000000000000000
Ref No.
MODE21222324
CD PLAY4.44.44.40.8
STANDBY0000.3
Ref No.
MODE12345
CD PLAY4.804.803.3
STANDBY00000
Ref No.
MODE1234567891011121314151617181920
CD PLAY04.84.84.84.82.91.02.02.04.84.82.52.501.82.50000
· The voltage value and waveforms are the reference 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.
·Importance safety notice :
Componentsidentifiedby
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.
Secondary trouble can be prevented by taking care during
repair.
·Cover the parts boxes made of plastics with aluminium foil.
·Put a conductive mat on the work table.
·Ground the soldering iron.
·Do not touch the pins of IC, LSI or VLSI with fingers directly.
markhavespecial
50
Page 51
18 Schematic Diagram
18.1. CD Servo Circuit
SCHEMATIC DIAGRAM - 1
SA-PM21PC
OPTICAL PICKUP UNIT
GND
C9 0.22
VR1
E
Vref
A
HUL7213
NC
LPD
GND
F
Vcc
B
LD
LDG
TRACKING COIL
FOCUS COIL
C2 0.22
0.47
C1
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+
D2-
M
M701
TRV MOTOR
29
R729
1K
R727
1K
C752
C739
0.018
0.018
IN4
PC2
R732
1K
2827
IN3
IN2
C714
6.3V100
48
C738
0.056
R723
3.3K
90
1910181117
20 21
D4-
D4+
PVCC2
PGND2
D1+
D1-
PVCC1
1216131514
38
PGND1
9
36
30
NC
GND
IC703
BA5948FPE2
IC 4CH DRIVE
NC
GND
29
8
37
NC
NC
R736
100
25424523
NC
NC
26
VCC
VREF
PC1
IN1
321
35
NC
NC
6227
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
51
Page 52
SA-PM21PC
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
C747
390P
R744
47K
39K
C742
0.022
C707
0.022
34
23
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
C704
0.1
C705
0.1
RFIN
RFOUT
RESERVE
RFVDD
DCDET
A
C
B
D
F
E
LD
PD
VREF
TEOUT
TEN
FEN
FEOUT
RFENV
CEA
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
C762
0.1
5
53
52
55
54
51
NC
OUTR
AVSS1
AVDD1
TRVP
TRVM
TRVP2
TRVM2
10
8
9
7
69
68
70
: CD-DA SIGNAL LINE
R717
1K
R718
1K
C731
6.3V220
59
60
56
57
58
DVSS2
SPPOL
6
5
DVDD2
IOVDD1
PWMSEL
SPOUT
4
REGON
EXT2
3
61
IOMODE
EXT1
2
1
62
NTEST
EXT0
63
C725
1000P
C726
1000P
C730
0.1
C733
0.1
C729
16V10
FLAG
MCLK
MDATA
MLD
STAT
BLKCK
NRST
DVSS3
IOVDD2
DQSY
TXTD
TXTCK
GIO0
GIO1
GIO2
GOUT0
GOUT1
C759
16V10
TX
X2
X1
13
14
17
19
C727
50V1
C728
50V1
R721
100
16
18
C753
470P
12
7
R760
100
61
62
24
63
64
65
66
67
68
69
70
71
72
73
73
74
74
75
75
76
76
77
77
78
78
79
80
8931 4
R753
10
53
C740
0.1
22
RSXC16M9S04
R714
R720 1M
10
R764
1K
C745
0.01
C722
22P
X701
21
470
C721
18P
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
MCLK
MLD
STAT
/RST
MAIN
CIRCUIT
9
(CN801) ON
8
SCHEMATIC
7
DIAGRAM-5
6
5
4
3
2
1
CN702
P.GND
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
52
Page 53
18.2. Main Circuit and Tuner Extent Circuit
SA-PM21PC
SCHEMATIC DIAGRAM-3
TUNER EXTENT
CIRCUIT
CN806
PORTSEL
1
CL
2
SDA
3
TUNED
4
TO TUNER PACK
Z401
ENG06810QF
TO
DECK CIRCUIT
(CN1303) ON
SCHEMATIC
DIAGRAM-9
LCH
5
SETERO
6
RCH
7
DET
8
TUNER_9V
9
TUNER_GND
10
CN804
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
C102
0.018
9VGND
RECH
9V(D9V)
DMT
PHOTO
REC_RIN
TAPE_EJECT
REC_LIN
VREF-
AGND
VREF+
PB_ROUT
AN7
PB_LOUT
AN6
MOTOR_10V
PL_L
MOTOR_GND
MOTOR_L
C101
0.018
1
2
3
4
5
6
7
8
9
10
CN805B
CN805A
REC_H
A9V
DMT
PHOTO
REC_RCH
TAPE_EJECT
REC_LCH
VREF+
PB_RCH
AN7
PB_LCH
AN6
MOTOR_10V
PL_L
MOTOR_L
PORTSEL
1
CL
2
SDA
3
TUNED
4
TUNER_LCH
5
STEREO
6
TUNER_RCH
7
DET
8
TUNER_9V
9
TUNER_GND
10
MAIN CIRCUIT
TUNER_LCH
TUNER_RCH
CD_LCH
CD_RCH
PB_LCH
PB_RCH
REC_LCH
REC_RCH
R203
2.7K
R403
2.7K
R201
6.8K
R401
6.8K
R204
6.8K
R404
6.8K
: +B SIGNAL LINE
R202
2.7K
R402
2.7K
C203
220P
C403
220P
R206
15K
R406
15K
C205
220P
C405
220P
C201
220P
C401
220P
: TAPE PLAYBACK SIGNAL LINE
: TAPE RECORD SIGNAL LINE
: CD SIGNAL LINE
: FM/AM SIGNAL LINE
C202
50V2.2
C402
50V2.2
C204
50V2.2
C404
50V2.2
C206
50V2.2
C406
50V2.2
R209
18K
C409
0.001
C209
0.001
R410
R210
1K
R409
18K
C207
16V10
1K
C407
16V10
TO
PANEL CIRCUIT
(CN901A) ON
SCHEMATIC
DIAGRAM-7
CN901B
1
2
3
4
5
6
7
8
9
10
11
12
VREF-
D5V
KEY2
KEY1
VREF+
VOL_JOG2
VOL_JOG1
RMT
FL_CLK
FL_RST
FL_DAT
FL_CS
D5V
KEY2
KEY1
VREF+
VOL_JOG2
VOL_JOG1
RMT
FL_CLK
FL_RST
FL_DATA
FL_CS
53
Page 54
SA-PM21PC
SCHEMATIC DIAGRAM-4
MAIN CIRCUIT
IC800
C1BB00000757
ASP IC
DS2
INF1
INF2
BNF2
BOUT2
BNF1
BOUT1
LEFT
RIGHT
VCC
24
23
22
21
20
19
18
17
16
15
14
S1
13
SC
C801
25V47
1
VIN1
2
VIN2
3
SEL2OUT
4
SEL1OUT
5
A1IN
6
A2IN
7
B1IN
8
B2IN
9
C1IN
10
C2IN
11
FILTER
12
GND
R411
390K
R211
390K
C880
50V2.2
C410
1000P
50V0.22
C803
47P
C800
47P
C413
C210
1000P
C411
0.22
C211
0.22
C802
16V47
C412
0.22
C212
0.22
R412
3.9K
R212
3.9K
C213
50V0.22
R800
4.7
: +B SIGNAL LINE
R266
12K
R466
12K
2200P
2200P
R267
120K
R467
120K
C281
C481
: MAIN SIGNAL LINE
: TAPE PLAYBACK SIGNAL LINE
: TAPE RECORD SIGNAL LINE
: CD SIGNAL LINE
: FM/AM SIGNAL LINE
R285
R283
47K
R295
68K
C293
1500P
R495
68K
C493
1500P
C298
470P
C498
470P
R483
47K
C297
470P
C497
470P
27K
R485
27K
R291
4.7K
R491
4.7K
C282
1000P
R282
5.6K
C482
1000P
R482
5.6K
R292
4.7K
C292
27000P
R492
4.7K
C492
27000P
Q290
R294
4.7K
Q490
50V0.22
R494
4.7K
Q280
R284
47K
Q480
R484
47K
C496
C890
Q280,Q480
AMPLIFIER
Q290,Q490
AMPLIFIER
C296
50V0.22
16V100
C283
50V 0.1
B1ABCE000016
C483
0.1
B1ABCE000016
R801
180
R750
4.7K
KRA101STA
Q751
Q803
MUTE A
Q750
SWITCH
R751
1K
C750
50V1
#D750
B0ACCK000005
B1GBCFJJ0044
B1GBCFJJ0044
MUTING SWITCH
D751
B0ACCK000005
Q751
SWITCH
Q803
R752
2.2K
ASP_CLK
ASP_DATA
R755
4.7K
R756
4.7K
R753
10
C751
63V47
C420
50V1
C220
50V1
C752
0.01
R220
100K
R420
100K
R221
12K
C221
330P
C421
330P
R421
12K
R222
68K
C222
C223
100P
100P
6785
IC700
C0ABBB000297
OP AMP
C422
C423
100
100
R422
68K
Q221,Q222,Q421,Q422
B1ABGC000005
C754
16V220
C224
6.3V 47
0.01
C753
1234
C424
6V47
R224
1K
R424
AMPLIFIER
R223
R225
47
47
R226
3.9K
0.01
C225
Q221
Q421
R425
39
R426
3.9K
1K
C425
0.01
R423
47
R227
3.9K
Q222
R427
3.9K
Q422
54
Page 55
SA-PM21PC
SCHEMATIC DIAGRAM-5
MAIN CIRCUIT
CN808B
HI_LEFT
1
AGND
2
HI_RIGHT
3
TUNER_9V
4
TNR_GND
5
6
7
8
9
10
11
12
13
TO
SPEAKER
TERMINAL
CIRCUIT
(CN808A) ON
SCHEMATIC
DIAGRAM-11
LOW_L
AGND
LOW_R
A 9V
MUTEB
MOTOR_GND
MOTOR_10V
PCONT_2
TO
CD SERVO
CIRCUIT
(CN702) ON
SCHEMATIC
DIAGRAM-2
22.1. IC702 (MN6627953HB) Servo
processor/ Digital signal
processor/ Digital filter/ D/A
converter
Pin No.MarkI/OFunction
1EXT0I/OExtend input/output port 0
2EXT1I/OExtend input/output port 1
3EXT2I/OExtend input/output port 2
4PWMSELIPWM output selection input
(L: Direct; H: Tri-State
5SPOUTOSpindle driver output signal
6SPPOLOSpindle driver output signal
7TRVPOSpindle driver output signal
8TRVMOSpindle driver outpu t signal
9TRVP2OTraverse driver output signal
2 (+)
10TRVM2OTraverse driver output signal
2 (-)
11TRPOTraverse driver output signal
(+)
12TRMOTraverse driver output signal
(-)
13FOPOTraverse driver output signal
(+)
14FOMOTraverse driver output signal
(-)
15IOVDD3-I/O power supply 3
16DVDD1-Power supply 1 for digital
circuit
17DVSS1-Digital circuit GND 1
18ADPVCCIPower voltage monitor.
Power voltage input
19TEINIDSP traverse error signal
input
20FEINIDSP focus error signal input
21CEAI/OHPF-Amp capacitance
connection terminal
22RFENVORF envelope signal monitor
23FEOUTOFE Amp output
24FENIFE Amp reversal input
25TENITE Amp reversal input
26TEOUTOTE Amp output
27VREFOVREF output
28PDIAPC Amp input
29LDOAPC Amp output
30EITracking input signal 1
31FITracking input signal 2
32DITracking input signal 4
33BITracking input signal 2
34CITracking input signal 3
35AIFocus input signal 1
36DCDETIDetection HPF capacitance
terminal
37RFVDD-RF Amp power supply
38RESERVE-AVSS2
Pin No.MarkI/OFunction
39RFOUTORF Amp output
40RFINIAGC input
41CAGCI/OAGC control terminal
42ARFOUTOAGC output (Audio RF)
43AVSS2-Analog circuit GND 2
44ARFINIRF signal input
45DSLFODSL loop filter
46IREFII (current), Reference input
47PLLFOPLL loop filter
48PLLF0OPLL loop filter
49AVDD2-Analog circuit power supply 2
50OUTLOLCH output signal
51AVSS1-Audio output circuit GND 1
52N.C.-No Connection
53AVDD1-Power supply 1 for analog
circuit
54OUTRORCH outpu t signal
55DVSS2-Digital circuit GND 2
56IOVDD1-I/O power supply 1
57DVDD2-Power supply 2 for Digital
62ECLKI/OEeprom Clock Output
63ECSI/OEeprom CS Output
64N.C.-No Connection
65TU_TUNEDI/OTuner Tuned Signal
66TU_STI/OTuner Stereo Signal
67N.C.-No Connection
68N.C.-No Connection
69N.C.-No Connection
70MOTOR_HI/ODeck Motor Control Out (H: ON)
71PL_HI/ODeck Plunger Control Out (H:
Furthermore, special parts which have purposes of fire-retardent (resistors), high-quality sound (capacitors), low noise
(resistors), etc are used.
When replacing any of these components, be sure to use only manufacturer’s specified parts shown in the parts list.
· The parenthesized indications in the Remarks columns specify the areas or colour. (Refer to the cover page for area or colour)
Parts without these indications can be used for all areas.
·Warning: This product uses a laser diode. Refer to Precaution of Laser Diode.
·Capacitor values are in microfarads (µF) unless specified otherwise, P= Pico-farads (pF), F= Farads.
·Resistance values are in ohms, unless specified otherwise, 1K=1,000 (OHM).
·The marking (RTL) indicates that the Retention Time is limited for this items. After the discontinuation of this assembly in
production, the item will continue to be available for a specific period of time. The retention period of a availability is dependent
on the type of assembly, and in accordance with the laws governing part and product retention. After the end of this period, the
assembly will no longer be available.
·[M] Indicates in the Remarks columns indicates parts supplied by PAVCSG.
·Reference for O/I book languages are as follows:
Ar:ArabicDu:DutchIt:ItalianSp:Spanish
Cf:Canadian FrenchEn:EnglishKo:KoreanSw:Swedish
Cz:CzechFr:FrenchPo:PolishCo:Traditional Chinese
Da:DanishGe:GermanRu:RussianCn:Simplified Chinese
Pe:PersianUr:Ukraine
mark have special characteristics important for safety.