Panasonic SA-PM30MD User manual

■Amplifier Section
THD 10%, both channels driven
HIGH 2X6W(6Ω)
LOW 2X14W(6Ω)
Total BI-AMP power 2X20W
Input sensitivity
AUX 320 mV
P-MD 100 mV
Input impedance
AUX 22 kΩ
P-MD 10 kΩ
Output impedance
Headphone 16-32 Ω
■FM tuner section
Frequency range 87.50-108.00 MHz
(0.05 MHz steps)
Sensitivity 1.8µV (IHF)
S/N 26 dB 1.5µV
Antenna terminals 75 Ωunbalanced
■AM tuner section
Frequency range 522-1629 kHz (9kHz steps)
Sensitivity
S/N 20 dB 500 µV/m
© 1999 Matsushita Electronics (S) Pte. Ltd. All rights
reserved. Unauthorized copying and distribution is a
violation of law.
SA-PM30MD
Colour
(S)... Silver Type
Area
(EB)... Great Britain
(EG)... Germany and Italy
TAPE SECTION
AR2 MECHANISM SERIES
CD SECTION
RAE0155Z TRAVERSE DECK SERIES
MD SECTION
MR3 MECHANISM SERIES
■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 100kHz
Erasing system AC erase 100kHz
Tape speed 4.8 cm/s
Overall frequency reponse (±3dB at
DECK OUT)
NORMAL (TYPE I) 50- Hz - 13 kHz
HIGH (TYPE II) 50- Hz - 13 kHz
S/N ratio
Normal (TYPE I) 52dB (A weighted)
Wow and flutter 0.18 % (WRMS)
Fast forward and rewind time Approx. 120 seconds with C-60
cassette tape
■MD section
System Minidisc digital audio system
Recording Magnetic field modulation direct
overwrite
MD Stereo System
Specification
ORDER NO. MD9912156C2

Reading Non-contact optical system with
semiconductor laser (Wavelength
= 780nm)
Sampling frequency 44.1 kHz
Coding system ATRAC *
Number of channels 2 channels stereo
Wow and flutter Below measurable limit
■CD section
Sampling frequency 44.1kHz
Decoding 16 bit linear
Beam source Semiconductor laser
Wave length 780 nm
Number of channels 2 channels stereo
S/N ratio
SP OUT 82 dB (JIS A)
Wow and flutter Below measurable limit
Digit filter 8fs
D/A converter MASH (1 bit DAC)
■General
Power supply
1 Before Repair and Adjustment 3
2 Protection Circuitry 3
3 Accessories 3
4 Handling Precautions For Traverse Deck (CD/MD) 4
5 Precaution of Laser Diode 5
6 Caution for AC Mains Lead 6
7 Operation Procedures 7
8 Operation Check and Main Component Replacement
Procedures 9
9 Self-Diagnostic Display Function 19
For EB AC 230-240 V, 50Hz
For EG AC 220-230 V, 50Hz
Power consumption 74 W
Standby
ECO 0.6 W
NORMAL 8.5 W
Dimensions (WxHxD) 195x288x292 mm
Weight 5.6 kg
Notes :
1. Specifications are subject to change without notices. Weight and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
* US and foreign patents licensed from Dolby Laboratories Licensing
Corporation.
■System: SC-PM30MD (EB) Music Center: SA-PM30MD (EB)
Speaker: SB-PM30 (E)
■System: SC-PM30MD (EG) Music Center: : SA-PM30MD (EG)
Speaker: SB-PM30 (EG)
10 Measurement and Adjustment 21
11 Illustration of IC’s, Transistors and Diodes 25
12 Terminal Function of IC´s 26
13 Block Diagram 33
14 Schematic Diagram 43
15 Printed Circuit Board 63
16 Wiring Connection Diagram 74
17 Troubleshooting Guide 75
18 Parts Location and Replacement Parts List 83
CONTENTS
Page Page
2
SA-PM30MD

3 Accessories
Remote Control Transmitter
FM indoor antenna
AC mains lead (EG)
AC mains lead (EB)
FM antenna Plug
Adaptor (EB)
AM Loop antenna
1 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C905, C910 through a 10Ω, 5W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
[EG]
• Current consumption at AC 230V, 50 Hz in NO SIGNAL mode should be ~150mA.
[EB]
• Current consumption at AC 240V, 50 Hz in NO SIGNAL mode should be ~150mA.
2 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.
Note : Refer to Packing Materials & Accessories for part number.
3
SA-PM30MD

The laser diode in the traverse deck (optical pickup) may break
down due to potential difference caused by static electricity of
clothes or human body.
So, be careful of electrostatic breakdown during repair of the
traverse deck (optical pickup).
●Handling of 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 (FPC board).
4.Do not turn the variable resistor (laser power
adjustment). It has already been adjusted.
●Handling of MD Unit (optical pickup)
1.Do not subject the MD unit (optical pickup) to static
electricity as it is extramely sensitive to electrical shock.
2.The short land between the No.25 (LD-GND) and No.
24 (LD) pins on the flexible board is shorted with a
solder builder up to prevent damage to the laser diode.
3.Take care not to apply excessive stress to the flexible
board (FFC).
4.Do not turn the variable resistor (laser power
adjustment). It has already been adjusted..
●Grounding for electrostatic breakdown prevention
1.Human body grounding
Use the anti-static wrist strap to discharge the static
electricity from your body.
2.Work table grounding
Put a conductive material (sheet) or steel sheet on the
area where the traverse deck (optical pickup) is 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.
4 Handling Precautions For Traverse Deck (CD/MD)
4
SA-PM30MD

■Use of Caution Labels
5 Precaution of Laser Diode
Caution :
This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens.
Wavelength : 780 nm
Maximum output radiation power from pick up : 100 mW/VDE
Laser radiation from pick up unit is safety level, but be sure the followings:
1.Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous.
2.Do not adjust the variable resistor on the pick up unit. It was already adjusted.
3.Do not look at the focus lens using optical instruments.
4.Recommend not to look at pick up lens for a long time.
ACHTUNG :
Dieses Produkt enthält eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit
abgestrahlt.
Wellenlänge : 780nm
Maximale Strahlungsleistung der Lasereinheit :100W/VDE
Die Strahlung an der Lasereinheit ist ungefährlich, wenn folgende Punkte beachtet werden:
1.Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefährlich ist.
2.Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.
3.Nicht mit optischen Instrumenten in die Fokussierlinse blicken.
4.Nicht über längere Zeit in die Fokussierlinse blicken.
ADVARSEL :
I dette a apparat anvendes laser.
CAUTION!
THIS PRODUCT UTILIZES A LASER.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT
IN HAZARDOUS RADIATION EXPOSURE.
5
SA-PM30MD

6 Caution for AC Mains Lead
6
SA-PM30MD

7 Operation Procedures
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SA-PM30MD

8
SA-PM30MD

8.1. Checking Procedure for Each
Major P.C.B.
8.1.1. Checking for the Deck P.C.B.
Step 3 Lift the deck unit in direction 1 and follow by direction 2
to remove the deck unit.
8 Operation Check and Main Component Replacement
Procedures
“ATTENTION SERVICER”
Some chassis components may 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.
4.Refer the Parts No. on the page of "Main Component Replacement Procedures", if necessary.
Contents
• Checking Procedure for each major P.C.B.
− Checking of the Deck P.C.B.
− Checking for the Transformer P.C.B.
− Checking for the Main P.C.B.
− Checking for the Tuner and FL P.C.B.
− Checking for the CD Servo P.C.B.
− Checking for the MD Servo P.C.B.
− Checking for the Power P.C.B.
• Diaassembly and Assembly of the Disc Tray and CD Traverse Unit
− Disassembly of the Disc Tray
− Disassembly of the CD Traveerse Unit
• Main Component Replacement Procedure
− Replacement of the CD Servo P.C.B. and Optical Pick-up Unit
− Removal of the Deck P.C.B. and Mechanism P.C.B. for replacing parts
− Replacement for the Magnetic Head and Optical Pick-up
− Replacement for the Belt and Loading Motor Assembly
− Replacement for the Traverse Motor Assembly
Warning :-
This product uses a laser diode. Refer to caution statement Precaution of Laser Diode.
ACHTUNG :-
• Die Lasereinheit nicht zerlegen.
• Die Lasereinheit darf nur gegen eine vom Hertsteller spezifizierte Einheit ausgetauscht werden.
9
SA-PM30MD

• Check the Deck P.C.B. as shown.
8.1.2. Checking for the Transformer
P.C.B.
• Check the Transformer P.C.B. as shown.
8.1.3. Checking for the Main P.C.B.
Step 2 Remove the panel in the direction of arrow.
• Check the Main P.C.B. as shown.
8.1.4. Checking for the Tuner and FL
P.C.B.
Step 1 Desolder 4 points and remove the shield plate.
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SA-PM30MD

Step 2 Desolder 6 points and remove the shield plate.
• Check the Tuner and FL P.C.B. as shown.
8.1.5. Checking for the CD Servo P.C.B.
Step 2 Lift up the CD unit and place it as shown in the following
figure.
• Check the CD Servo P.C.B. as shown.
8.1.6. Checking for the MD Servo P.C.B.
Step 2 Remove the CD fixture (B).
Step 4 Remove the MD shield and place the MD Servo unit as
shown in the following figure.
• Check the MD Servo P.C.B. as shown.
• When checking the IC1 on the MD Servo P.C.B., it can be
measured with test point on the MD Servo P.C.B.
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SA-PM30MD

8.1.7. Checking for the Power P.C.B.
Step 2 Lift up the Main P.C.B. together with the Power P.C.B.
and rotate left then place the P.C.B. as shown in the following
figure.
• Check the Power P.C.B. as shown.
8.2. Disassembly and Assembly of
the Disc Tray and CD Traverse
Unit
8.2.1. Disassembly of the Disc Tray.
Step 1 Turn the gear counter clock wise until the CD Tray starts
to move out.
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SA-PM30MD

Step 2 Release the 2 claws and remove the clamp plate in the
direction of the arrow.
Step 3 Lift up the CD Tray to remove it.
8.2.2. Disassembly of the CD Traverse
Unit.
Step 1 Release the 2 claws and remove the CD Traverse Unit
in the direction of the arrow.
NOTE :
1.Follow the reverse procedure to replace the CD Traverse
Unit and CD Tray.
2.Make sure that the 2 gear is in position shown above and
the hole on the right gear is align with the hole below it
when replacing the CD Traverse Unit and CD Tray.
NOTE : When replacing the CD Tray, make sure the Dented
line is at the position as shown.
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SA-PM30MD

8.3. Main Component Replacement
Procedure
8.3.1. Replacement of the CD Servo
P.C.B. and Optical Pick-up Unit.
Step 2 Desolder the 4 legs of 2 motors and flip over the CD
Servo P.C.B.
Step 3 Remove the flexible cable at CN701.
• Removal of the flexible cable
Push the top of the connector in the direction of the arrow
1 and then pull out the flexible cable in the direction of the
arrow 2.
NOTE : Insert a short pin into the flexible cable.
Step 4 Push the lever in and turn the gear clock wise fully.
Step 6 Release the claw and remove the Driver Plate.
14
SA-PM30MD

Step 7 Slide out the Optical Pick-up Unit from the indent
opening.
NOTE : Do not touch the Lense on the OPU.
8.3.2. Removal of the Deck P.C.B. and
Mechanism P.C.B. for replacing
parts.
Step 2 Push the lever upward to open the cassette lid and
remove the deck unit.
Step 4 Desolder the motor wires.
Step 5 Remove the Deck P.C.B.
15
SA-PM30MD

Step 7 Desolder the plunger terminals.
Step 8 Release the 4 claws and remove the Mechanism P.C.B.
8.3.3. Replacement for the Magnetic
Head and Optical Pick-up.
Step 1 Remove the 2 FFCs from the connector.
Step 2 Remove the pressure spring from latch.
Step 3 Release the 2 claws and then lift up the holder ass’y.
Step 4 Set the holder ass’y and MD mechanism unit at a 60
degree angle and then pull out the holder ass’y.
Step 7 Spread the lugs of head shifter and then release the
lugs from boss.
Step 9 Release the 2 claws and then remove the REF base.
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SA-PM30MD

Step 15 Remove the nut plate spring and nut plate.
Notice for installing the optical pickup
Step 2 Align the guide portion (A) of optical pickup with the sub
shaft.
Note : Take care not to bend the FFC.
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SA-PM30MD

8.3.4. Replacement for the Belt and
Loading Motor Assembly
Step 4 Release the 4 claws.
Step 7 Release the 2 claws and then lift up the holder ass’y.
Note : When installing the holder ass’y, align the lock lever pin
with the main rack slot.
Step 8 Set the holder ass’y and MD mechanism unit at a 60
degree angle, and then pull out the holder ass’y.
Notice for installing the loading motor
• Align the hole of loading motor with the boss of mechanism
chassis and then install the loading motor.
8.3.5. Replacement for the Traverse
Motor Assembly
• Follow Step 1 ~Step 8 of item 1.3.4 in Main Component
Replacement Procedures.
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SA-PM30MD

Step 3 Spread the lugs of head shifter and then release the
lugs from boss.
Step 5 Release the 2 claws and then remove the REF base.
This unit is equipped with a self-diagnostic function which, in
the event of a malfunction, automatucally display a code
indication the nature of the malfunction. Use this self-diagnostic
function when servicing the unit.
9.1. Entering self-diagnostic Mode
1.Turn the power on.
2.Press CD play button with no CD, cassette or MD loaded.
3.Press and hold the STOP button for at least 2 seconds, and
while still pressing the STOP button, press the Forward
Skip/Search button for at least 2 seconds. The unit enters
Self-Diagnostic Mode and display “TEST”. Then an error
code (e.g. H01) is displayed, if any. In the case of no error,
“TEST” is displayed on FL.
4.If more than 1 error exists, the display will sequentially show
the respective error codes each time the STOP button is
pressed.
Notice for installing the traverse motor
• Align the hole of traverse motor with the boss of mechanism
chassis and then install the traverse motor.
9.2. Cassette Mechanism Test (For
error code H01, H02, H03, H06,
F01, F02)
1.Load a cassette tape with the erasure prevention tab,
remove from left side only and close the cassette holder.
2.Press "Forward Skip/Search" (Tape will be stop after 2
seconds).
3.Load a cassette tape with the erasure prevention tab,
remove from right side only and close the cassette holder.
4.Press "Reverse Skip/Search" (Tape will be stop after 2
seconds).
5.Load a pre-recorded tape with both side record tabs intact
and close the cassette holder.
6.Press "Tape Play" (After TPS function, tape will stop
automatically).
7.Press "Tape Record" (Tape will not move).
9 Self-Diagnostic Display Function
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SA-PM30MD

8.Press "Stop" to indicate Error code.ve).
· If several problem exist, error code will change each time
when "Stop" is pressed.
(e.g. H01 →H03 →F01 ..... etc.)
9.3. 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”.
9.4. 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.
9.5. Description of error code
9.5.1. Power Amplifier Failure (F76)
When power amplifier output failure for power supply failure.
9.5.2. Error detection for CD Block
Error Code Problem Condition Possible Cause
F15 CD does not function REST SW detection error.
This error occurs when the Optical Pick Up REST SW (S701) is not detected within the specified
time. (about 8 seconds).
H15 The CD tray closes CD disc tray detect switch NG. (Check and replace)
F26 CD does not function Transmission error between CD servo LSI and micon.
This error occurs between CD servo LSI and micon. This error occurs when the POWER is ON
for the CD block and an error is detected after the transmission has started.
9.5.3. Error dection code for MD block
Error Code Problem Condition Possible Cause
MD F15 Interval till MD starts playing
is too long Pickup home position sense switch (S8) is defective; check and replace if neccessary.
MD F26 MD is loaded but cannot be
played Communication error between the servo processor IC and the microprocessor IC (system control). Check if the flexible circuit board is disconnected.
Displayed when the disc is scratched too.
F22 MD cannot be loaded MD loading motor or MD loading mechanism error; check and replace.
F28 MD cannot be loaded Confirm that the disc is not catching on anything.
The connection (flexible circuit board or connector cable) between the MD unit and the MD
servo circuit board is disconnected or damaged; check and replace if neccessary.
The MD unit may be malfunctioning; replace it.
F29 MD cannot be ejected Confirm that the disc is not catching anything.
The connection (flexible circuit board or connector cable) between the MD unit and the MD
servo circuit board is disconnected or damaged; check and replace if neccessary.
The MD unit may be malfunctioning; replace it.
9.5.4. Error detection code for Cassette Mechanism Block
Error Code Problem Condition Possible Cause
H01 Cassette deck maifunctions MODE SW detection error.
Faulty contact or short circuit of mechanism mode switch. (S971)
H02 Recording not possible REC INH SW detection error.
Faulty contact or short circuit of REC INH switch. (S974, S975)
H03 Playback cannot perform. HALF SW detection error.
Faulty contact or short circuit of HALF switch. (S972)
H06 No treble is produce when a
normal tape is CrO2 SW
detection error played or
recorded.
Excessive treble is produces
when a CrO2/Metal tape is
played, or the recorded treble
is destorted and at a low level.
Cr02 SW detection error.
Faulty contact or short circuit of CrO2 switch (S973).
F01 The tape advances slightly
and then stops. Reel pulse detection error. Faulty reel pulse, faulty hole detect IC. (IC971)
F02 Cassette deck will not perform
TPS function Faulty TPS drive IC. (IC303)
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SA-PM30MD