Panasonic SA-PM53E User manual

nAmplifier Section
RMS OUTPUT POWER both channel driven
10% Total harmonic distortion
1 kHz 50 W per channel (6 Ω)
Total Bi-Amp power 90 W per channel
Input Impedance
A
ux 250 mV 12kΩ
Output Impedance
Headphone 16 Ωto 32 Ω
Phone jack
Terminal Stereo, 3.5 mm
A
UX jack (Music port)
Terminal Stereo, 3.5 mm
nFM Tuner Section
Frequency range 87.50 MHz to 108.00 MHz
(50 kHz steps)
Sensitivity 0.3 µV (IHF)
S/N 26dB 0.2 µV
A
ntenna terminals 75 Ω(unbalanced)
Preset stations FM 15 stations
AM 15 stations
nAM Tuner Section
Frequency range 522 kHz to 1629 kHz
(9kHz steps)
520 kHz to 1630 kHz
(10kHz steps)
Sensitivity
©2006 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-PM53E
SA-PM53EB
SA-PM53EG
Colour
(S)... Silver Type
S/N 20 dB (at 999 kHz) 900 µV/m
nCassette 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
Erase system AC erase 100 kHz
Tape speed 4.8 cm/s
Overall frequency response (+3, -6 dB at DECK OUT)
NORMAL 35 Hz to 14 kHz
S/N RATIO 54 dB (A weighted)
Wow and flutter 0.08% (WRMS)
Fast forward and rewind time Approx. 120 seconds with C-60
cassette tape
nCD Section
Disc played [8 cm or 12 cm]
(1) CD-Audio (CD-DA)
(2) CD-R/RW (CD-DA, MP3 formatted disc)
(3) MP3
Sampling frequency
CD 44.1 kHz
MP3 32 kHz, 44.1 kHz, 48 kHz
Bit rate
MP3 32 kbps to 384 kbps
CD Stereo System
Specification
ORDER NO. MD0602043C2

Decoding 16/20/24 bit linear
Pickup
Wavelength 785 nm
Beam source Semiconductor laser
Laser power CLASS 1
A
udio output (Disc)
Number of channels 2-Channel
Frequency response 20 Hz to 20 kHz (+1dB, -2 dB)
Wow and flutter Below measurable limit
Digital filter 8fs
D/A converter MASH (1 bit DAC)
nGeneral
Power supply AC 230 V, 50 Hz (For E, EG)
AC 230-240 V, 50 Hz (For EB)
Power consumption 125 W
Dimensions (W x H x D) 175 mm x 249 mm x 355 mm
Mass 5.4 kg
1 Safety Precautions 4
1.1. GENERAL GUIDELINES 4
1.2. Caution for AC Cord 5
1.3. Before Repair and Adjustment 6
1.4. Protection Circuitry 6
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 7
3 Precaution of Laser Diode 8
4 Handling Precautions For Traverse Deck 9
5 Handling the Lead-free Solder 10
5.1. About lead free solder (PbF) 10
6 Accessories 11
7 Operating Instructions Procedures 12
7.1. Main Unit & Remote Control Operation 12
7.2. Disc Information 13
8 Self-Diagnosis & Special Mode Setting 14
8.1. Special Mode Table 14
8.2. Error Code Table 23
9 Assembling and Disassembling 26
9.1. Caution 26
9.2. Disassembly flow chart 27
9.3. Main Parts Location Diagram 28
9.4. Disassembly of Side Panel L & R 29
9.5. Disassembly of Top Cabinet 29
9.6. Disassembly of Deck P.C.B. and Tape Eject P.C.B. 29
9.7. Disassembly of Front Panel 30
9.8. Disassembly of Panel P.C.B. 30
Operating temperature range +5°C to +35°C
Operating humidity range 5% to 90% RH (no condensation)
Power consumption in standby
mode
0.6 W
Notes :
1. Specifications are subject to change without notices. 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 or the speakers refer to
High frequency and Low frequency.
nSystem : SC-PM53E-S Music center: SA-PM53E-S
Speaker: SB-PM53EG-MJ
nSystem : SC-PM53EB-S Music center: SA-PM53EB-S
Speaker: SB-PM53EG-MJ
nSystem : SC-PM53EG-S Music center: SA-PM53EG-S
Speaker: SB-PM53EG-MJ
9.9. Disassembly of Rear Cabinet 31
9.10. Disassembly of Main P.C.B. 31
9.11. Disassembly of Transformer P.C.B. 32
9.12. Disassembly of Tuner Pack 32
9.13. Disassembly of Power P.C.B. 33
9.14. Disassembly of CR16 Mechanism 33
9.15. Replacement of CD Lid 34
9.16. Replacement of Cassette Lid 35
9.17. Replacement of the Power IC 36
9.18. Procedure for Replacing Pinch Roller and Head Block
(Deck Mechanism Unit) 37
9.19. Procedure for Replacing Motor, Capstan Belt A, Capstan
Belt B, and Winding Belt (Deck Mechanism Unit) 37
9.20. Procedure for Replacing Parts on Deck Mechanism PCB
39
9.21. Disassembly of CR16 Mechanism 39
9.22. Replacement of optical pickup unit (CD mechanism) 40
9.23. Replacement of a traverse gear A and a traverse gear B
42
9.24. Procedure for removing CD loading mechanism 43
9.25. CR16 mechanism disassembly procedure 43
9.26. CR16 MECHANISM ASSEMBLY PROCEDURE 49
9.27. Disassembly of traverse mechanism 62
9.28. Handling of cassette tape jam 63
10 Service Positions 64
10.1. Checking and Repairing of Deck, Deck Mechanism and
Tape Eject P.C.B. 64
CONTENTS
Page Page
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SA-PM53E / SA-PM53EB / SA-PM53EG

10.2. Checking and Repairing of Transformer P.C.B. 65
10.3. Checking and Repairing of Main P.C.B. 66
10.4. Checking and Repairing of Panel P.C.B. 67
10.5. Checking and Repairing of CD Servo and CD Loading
P.C.B. 68
10.6. Checking and Repairing of Power P.C.B. 69
11 Procedure for Checking Operation of Individual Parts of Deck
Mechanism Unit 70
11.1. Operation Check with Cassette Tape 70
11.2. Operation Check without Cassette Tape 70
12 Measurement And Adjustments 72
12.1. Cassette Deck Section 72
13 Voltage Measurement & Waveform Chart 74
13.1. Voltage Measurement 74
13.2. Waveform Chart 77
14 Wiring Connection Diagram 79
15 Block Diagram 81
16 Notes of Schematic Diagram 85
17 Schematic Diagram 87
17.1. CD SERVO CIRCUIT 87
17.2. MAIN CIRCUIT 88
17.3. PANEL CIRCUIT 90
17.4. DECK CIRCUIT, DECK MECHANISM CIRCUIT and TAPE
EJECT CIRCUIT 91
17.5. POWER CIRCUIT 92
17.6. TRANSFORMER CIRCUIT 93
17.7. CD LOADING CIRCUIT 94
18 Printed Circuit Board Diagrams 95
18.1. CD SERVO P.C.B 95
18.2. MAIN P.C.B 96
18.3. PANEL P.C.B 97
18.4. DECK P.C.B, DECK MECHANISM P.C.B and TAPE
EJECT P.C.B 98
18.5. POWER P.C.B 99
18.6. TRANSFORMER P.C.B 100
18.7. CD LOADING P.C.B 101
19 Illustration of IC 痴, Transistors and Diodes 103
20 Terminal Function of ICｴs 104
20.1. IC7001 (MN6627954MA) IC SERVO
PROCESSOR/DIGITAL SIGNAL PROCESSOR/DIGITAL
FILTER D/A CONVERTER 104
20.2. IC7002 (BA5948FPE2) IC 4CH Drive 105
20.3. IC401 (C2CBYY000164) IC MICRO PROCESSOR 105
21 Troubleshooting Flowchart (CD Section Circuit) 107
22 Exploded Views 109
22.1. Cabinet Parts Location 109
22.2. CD Loading Mechanism Parts Location 110
22.3. Deck Mechanism (RAA4402-1S) & Traverse Parts
Location 111
22.4. Packaging 112
23 Replacement Parts List 113
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SA-PM53E / SA-PM53EB / SA-PM53EG

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.
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 .
Figure. 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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SA-PM53E / SA-PM53EB / SA-PM53EG

1.2. Caution for AC Cord
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SA-PM53E / SA-PM53EB / SA-PM53EG

1.3. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C512, C513, C514, C606, C608, C610, C624 through a 10Ω,1W
resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
· Current consumption at AC 230V, 50 Hz in NO SIGNAL mode should be ~300 mA (E/EG).
· Current consumption at AC 230V-240V, 50 Hz in NO SIGNAL mode should be ~300 mA (EB).
1.4. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
· No sound is heard when the power is turned on.
· Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
"shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
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SA-PM53E / SA-PM53EB / SA-PM53EG

2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage
caused by electro static discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium
foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or
comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)
sufficient to damage an ES device).
7
SA-PM53E / SA-PM53EB / SA-PM53EG

3 Precaution of Laser Diode
Caution :
This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens.
Wavelength : 780 nm
Maximum output radiation power from pick up : 100 µW/VDE
Laser radiation from pick up unit is safety level, but be sure the followings:
1. Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous.
2. Do not adjust the variable resistor on the pick up unit. It was already adjusted.
3. Do not look at the focus lens using optical instruments.
4. Recommend not to look at pick up lens for a long time.
ACHTUNG :
Dieses Produkt enthält eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit
abgestrahlt.
Wellenlänge : 780nm
Maximale Strahlungsleistung der Lasereinheit :100 µW/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.
nUse of Caution Labels
8
SA-PM53E / SA-PM53EB / SA-PM53EG

4 Handling Precautions For Traverse Deck
The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of
clothes or human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
· Handling of traverse deck (optical pickup)
1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock.
2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board).
3. Take care not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish
the job in as short time as possible. (Fig 4.1)
4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted.
· Grounding for electrostatic breakdown prevention
1. Work table grounding. (Fig 4.2)
Use the anti-static wrist strap to discharge the static electricity from your body.
2. Work table grounding. (Fig 4.2)
Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is place, and ground
the sheet.
Caution:
The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the
traverse deck (optical pickup).
Caution when replacing the Traverse Deck
The traverse deck has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure to
remove the solder from the short point before making connections.
(Fig 4.1)
(Figs 4.2)
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SA-PM53E / SA-PM53EB / SA-PM53EG

5 Handling the Lead-free Solder
5.1. About lead free solder (PbF)
Distinction of PbF P.C.B.:
P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.
Caution:
· Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please
use a high temperature soldering iron. In case of soldering iron with temperature control, please set it to 700 ± 20°F (370 ±
10°C).
· Pb free solder will tend to splash when heated too high (about 1100°F/600°C).
· When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the
soldering points with the Pb free solder until it melts enough.
10
SA-PM53E / SA-PM53EB / SA-PM53EG

6 Accessories
Note : Refer to Packing Materials & Accessories Parts List (Section 23) for the part number.
Remote Control
AC Power Cord
(For EB)
AC Power Cord
(For E/EG)
AM Loop Antenna
FM Antenna
FM
Antenna
(For EB)
11
SA-PM53E / SA-PM53EB / SA-PM53EG

7 Operating Instructions Procedures
7.1. Main Unit & Remote Control Operation
12
SA-PM53E / SA-PM53EB / SA-PM53EG

7.2. Disc Information
13
SA-PM53E / SA-PM53EB / SA-PM53EG

8 Self-Diagnosis & Special Mode Setting
This unit is equipped with features of self-diagnostic & special mode setting for checking the functions & reliability.
Special Note : Checking of the reliability (ageing) & changer operation must be carry out to ensure good working condition in unit.
8.1. Special Mode Table
Below is the various special modes for checking:-
Item FL Display Key Operation
Mode Name Description Front Key
Self -Diagnostic
Mode
To enter into self
diagnostic checking for
main unit.
1. Select [ ] for TAPE mode (Ensure
no tape is inserted).
2. Press and hold [ ]button for 3
seconds follow by [ ].
To exit, press button on main
unit or remote control.
CD Changer
Reliability Test
To determine the
reliability of CD Changer
Unit.
(For more information,
refer to section 8.1.2)
In doctor Mode:
1. Press [2] button on remote control..
To exit, press button on main
unit or remote control.
Doctor Mode To enter into Doctor
Mode for checking of
various items and
displaying EEPROM and
firmware version.
(For more information,
refer to section 8.1.3)
Note: The micro-
processor version as
shown is an example. It
will be revise when there
is an updates.
1.
2.
1. The Check Sum of EEPROM and firmware
version will be display for 1 sec.
* ROM correction
** Firmware version No:
In any mode:
1. Press [ ] button on main unit follow
by [4] and [7] on remote control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
Cold Start To activate cold start
ipon next AC power up.
Note: This test do not work when selector is in
Tuner.
In doctor mode:
1. Press [4] button on remote control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
FL Display Test To check the FL
segments display (All
segments will light up)
In doctor mode:
1. Press [DIMMER] button on remote control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
CD to TAPE
Recording Test
Mode
To Inspect the recording
process from CD to
TAPE for the unit
(For more information,
refer to section 8.1.4)
In doctor mode:
1. Set to CD mode
2. Press [5] button on remote control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
Tape Recording
and Playing
To Inspect the Tape
recording and playing is
process for unit.
(For more information,
refer to section 8.1.5)
In doctor mode:
1. Press [6] button on remote control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
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SA-PM53E / SA-PM53EB / SA-PM53EG

Item FL Display Key Operation
Mode Name Description Front Key
Volume Setting To Forced Volume
Setting.
· BASS TREBLE set to
0dB.
· H.BASS is off.
1.
2.
3.
In doctor mode:
1. Press [7] button on remote control.
2. Press [8] button on remote control.
3. Press [9] button on remote control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
TPS To check FF TPS for
deck.
(For more information,
refer to section 8.1.6)
In doctor mode:
1. Press [ ] button on remote
control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
CD Tray and
Tape Door Open
To check CD Tray and
Tape Door Open.
· BASS TREBLE set to
0dB.
· H.BASS is off.
· CD tray and Cassette
cover shall open
simultaneously.
In doctor mode:
1. Press [1] button on remote control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
Changer
Operation
To check the CD
Changer Operation.
(For more information,
refer to section 8.1.7)
1. Tray 1 load, tray 2
open then close.
2. Tray 1 load, tray 3
open then close.
3. Tray 1 load, tray 4
open then close.
4. Tray 1 load, tray 5
open then close.
5. CD check mode and
then close.
6. Tray 1 load.
7. After the above
process, [CHNGR_OK]
shall be displayed. If
there is no problems.
Error codes will display if
errors occurs.
In doctor mode:
1. Press [DISC] button on remote control.
To exit, press [ENTER] button on remote
control or button on main unit or
remote control.
8.1.1. Cassette Mechanism Self-Diagnostic Mode
Below is information on the checking of cassette deck mechanism
No. Operation Procedures Micon operation & processing
1C-mecha Abnormal Detection shall be
executed for DECK 1 only.
Check that all DECK mechanism leaf SW is in OFF state.
2 [ ] key is pressed, after loading in a
NORMAL type cassette with the recording tab
on the left side removed.
FF shall be executed for 2 sec, after which 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.
3 [ ] key is pressed, after loading a
NORMAL, CrO2, METAL type cassette with
the recording tab on the right side removed.
REW shall be executed for 2 sec, after which 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.
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SA-PM53E / SA-PM53EB / SA-PM53EG

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 ).
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.
5[REC] key is pressed, after loading in a
NORMAL type cassette ( with both recording
tabs intact )
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
6Self-diagnostic mode is stopped by pressing
the [n] Key.
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]
7To clear all the abnormalities in the memory,
press the [n] Key for more than 5 Sec while
the self-diagnostic mode is stopped.
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.
8To cancel the self-diagnostic mode press the
[POWER] Key.
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.
8.1.2. CD changer unit Reliability Test (Ageing Test Mode)
Below is the process flow chart of ageing for the CD changer unit.
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SA-PM53E / SA-PM53EB / SA-PM53EG

17
SA-PM53E / SA-PM53EB / SA-PM53EG

8.1.3. EEPROM Checksum (ROM correction)
Purpose : To check for micro-processor firmware version & EEPROM check (ROM correction).
Below is the procedures for this mode.
Step 1: Enter into Doctor mode (For more information refer to section 8.1 on key operation to enter into this mode).
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SA-PM53E / SA-PM53EB / SA-PM53EG

Step 2: Check for firmware version & EEPROM checksum.
· When entering into DOCTOR MODE the firmware version & checksum of EEPROM (if applicable) will appear on FL display.
Below is information on the EEPROM IC (Rom correction) under 3 examples:
1. When EEPROM IC is detected and there is no ROM correction:
2. When EEPROM IC is detected and has ROM correction:
3. When EEPROM IC is detected and has ROM correction but NG:
Note: Micro-processor firmware version refers to version No. (Eg.MS079_12) for micro-processor IC.
It is subject to change which would update accordingly.
· Rom correction checksum refers to the hex code that is display upon key buttons pressed if an EEPROM is loaded in the unit.
(Main P.C.B)
8.1.4. CD to Tape Recording Inspection
Purpose : To check the recording function from CD to Tape.
Below is the procedures for this mode.
Step 1: Enter into Doctor mode (For more information refer to section 8.1 on key operation to enter into this mode).
Step 2 : Use CDT-018 (Ensure TOC is completed) to CD unit before proceeding.
Step 5 : Press [5] button on remote control. Enter into CD to Tape Test mode. (During this mode, volume is set to [VOLUME 50],
Bass & Treble is set to 0dB & H.BASS is switch off).
Note : When in CD to Tape Recording Test mode, the following process is perform :
a) Deck will rewind to start point (point at the start of recording) & Stop. During rewinding of Tape, CD tray (selected) remains open.
b) Recording begins (at constant analogue recording speed) for 3 seconds & Stop. During this time, track 1 is access (-10dB,
400HZ)
· However, “Error” would be display if there is no tracks to access to, no tape inserted, no test CD inserted or when the tape
erasure prevention tab for FWD side is not suitable for recording.
· When in this mode, if button is pressed the process will stops automatically.
8.1.5. Tape Recording and Playing
Assuming the recording to TAPE has been done in test 3, only playing TAPE is made.
Purpose : To check the Tape function.
Below is the procedures for this mode.
Step 1: Enter into Doctor mode (For more information refer to section 8.1 on key operation to enter into this mode).
Step 2 : Press [6] button on remote control. Enter into Tape recording Test mode. (During this mode, Tape function is set to
automatically, volume is set to [VOLUME 50], Bass & Treble is set to 0dB & H.BASS is switch off).
Step 3 : FWD play is made for 3 seconds after setting the above-mentioned, TAPE is stopped 3 seconds later. Tape should open
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SA-PM53E / SA-PM53EB / SA-PM53EG

Note : When in CD to Tape Recording Test mode, the following process is perform :
a) If the erasure prevention tab for FWD side the tape is broken, it is judged as an error and the recording operation does not start.
b) If tape stops by detecting a tape end while recording, it becomes an error.
c) If STOP key is pressed while recording or playing, the operation shall be terminated by stopping TAPE. In this case, the doctor
mode is not released.
d) DMT is output with the same timing as usual.
8.1.6. TPS Inspection
Purpose : To check the TPS.
Below is the procedures for this mode.
Step 1: Enter into Doctor mode (For more information refer to section 8.1 on key operation to enter into this mode).
Step 2 : Press [ ] button on remote control. Enter into TPS Test mode. (During this mode)
· Software will start checking for existence of cassette in Deck.
· If the Deck does not contain any cassette, it shall end the test and displays the result of the test.
· The test will start by playing the Deck in forward direction for 1 sec and then FF TPS.
· If TPS signal is OK, the Deck shall be ejected. Below is information on the TPS under 3 examples.
1. If ERROR Flag is set "ERROR" shall be displayed. TPS check result shall not be shown in this case.
2. If Deck TPS check = OK
3. If Deck TPS check = NG
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SA-PM53E / SA-PM53EB / SA-PM53EG