PANASONIC SA-AK300 Service Manual
Service Manual
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ORDER NO. MD0110223C1
A6
CD Stereo System
l
SA-AK300
Colour
(K)... Black Type
(S)... Silver Type
Area
(P)... U.S.A.
(PC)... Canada
TAPE SECTION :
SG-2W MECHANISM SERIES
CD SECTION :
RAE0152Z-3 TRAVERSE DECK SERIES
AMPLIFIER SECTION
Power output
10% Total harmonic distortion
3 kHz - 16 kHz, both channels driven
(HIGH) 45 W per channel (6Ω)
60 Hz - 3 kHz, both channels driven
(LOW) 45 W per channel (6Ω)
Total Bi-Amp power 90 W per channel
Power output
10% Total harmonic distortion
10 kHz, both channels driven
(HIGH) 48 W per channel (6Ω)
1 kHz, both channels driven
(LOW) 52 W per channel (6Ω)
Total Bi-Amp power 100 W per channel
Input sensitivity
AUX 250 mV
Input Impedance
AUX 13.3 kΩ
FM TUNER SECTION
Frequency range 87.9 - 107.9 MHz (200 kHz steps)
87.5 - 108.0 MHz (100 kHz steps)
Sensitivity 2.5μV (IHF)
S/N 26 dB 2.2μV
Antenna terminal(s) 75Ω (unbalanced)
AM TUNER SECTION
Frequency range 520 - 1710 kHz (10 kHz steps)
Sensitivity
S/N 20 dB (at 1000 kHz) 560μV/m
CASSETTE DECK SECTION
Track system 4 track, 2 channel
Heads
Record/playback Solid permalloy head
Specifications
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Erasure Double gap ferrite head
Motor DC servo motor
Recording system AC bias 100 kHz
Erasing system AC erase 100 kHz
Tape speed 4.8 cm/s
Frequency response (+3 dB, -6 dB at DECK OUT)
NORMAL (TYPE I) 35 Hz - 14 kHz
S/N 50 dB (A weighted)
Wow and flutter 0.18% (WRMS)
Fast forward and rewind time Approx. 120 seconds with
C-60 cassette tape
CD SECTION
Sampling frequency 44.1 kHz
Decoding 16 bit linear
Beam source/wave length Semiconductor laser/780 nm
Number of channels Stereo
Frequency response 20 Hz - 20 kHz (+1, -2 dB)
Wow and flutter Below measurable limit
Digital filter 8 fs
D/A converter MASH (1 bit DAC)
GENERAL
Power supply AC 120 V, 60Hz
Power consumption 165 W
Power consumption in standby mode
0.34 W
Dimensions (W x H x D) 250 x 315 x 345 mm
(9 27/32” x 12 13/32” x 13 19/32”)
Mass 7.4 kg (16.3 lb)
SYSTEM
SC-AK300(P) Music Center: SA-AK300(P)
Speaker: SB-AK300(P)
SC-AK300(PC) Music Center: SA-AK300(PC)
Speaker: SB-AK300(P)
Notes:
1.Specifications are subject to change without notice. Mass and dimensions are aproximate.
2.Total harmonic distortion is measured by the digital spectrum analyzer.
3.The labels“HIGH” and“LOW” on the rear of the speakers refer to High frequency and Low frequency.
© 2001 Matsushita Electronics (S) Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
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9 Self-Diagnostic Function
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9.1 Self-diagnostic display
9.2 How to enter the Self-Diagnostic Function
9.3 Cassette Mechanism Test (For error code H01, H02, H03, F01, F02)
9.4 CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15)
9.5 To clear all Error code
9.6 How to get out from Self-Diagnostic function
9.7 Power Amplifier Failure (F61)
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9.1 Self-diagnostic display
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This unit is equipped with a self-diagnostic display function which, if a problem occurs, will display
an error code corresponding to the problem.
Use this function when performing maintenance on the unit.
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9.2 How to enter the Self-Diagnostic Function
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9.3 Cassette Mechanism Test (For error code
H01, H02, H03, F01, F02)
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1.Press “TAPE, DECK 1/2” to select Deck 2.
2.Load a cassette tape with the erasure prevention tab, remove from left side only and close the
cassette holder.
3.Press “FAST FORWARD MEMORY” (Tape will be stop after 2 seconds)
4.Load a cassette tape with the erasure prevention tab, remove from right side only and close the
cassette holder.
5.Press “REVERSE FM MODE/BP” (Tape will be stop after 2 seconds)
6.Load a pre-recorded tape with both side record tabs intact and close the cassette holder.
7.Press “PLAY/TUNE/TIME ADJ UP” (After TPS function, tape will stop automatically)
8.Press “REC/STOP” (Tape will not move)
9.Press “STOP/TUNE MODE” to indicate Error code.
¡ If several problem exist, error code will change each time when “ /TUNE MODE” is
pressed.
(e.g. H01 → H03 → F01 .....etc.)
10.Press “TAPE, DECK 1/2” to select Deck 1.
11.Repeat step 2 to 9 to test Deck 1. (Tape Deck 1 will not check H02 because of no recording
function)
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9.4 CD Mechanism Test (F15, F26, F16, F17,
F27, F28, F29, H15)
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1.Press “CD”.
2.Press “OPEN/CLOSE (1)” and place a CD.
3.Press “OPEN/CLOSE (1)” to close the tray.
4.Press “OPEN/CLOSE (5)” and wait until the tray is open.
5.Press “OPEN/CLOSE (1)” and remove the CD.
6.Press “OPEN/CLOSE (1)” to close the tray.
7.Press “ /TUNE MODE” to indicate Error Code.
¡
If several problem exist, error code will change each time when “ /TUNE MODE” is
pressed. (e.g. F15 → F26 → F16 ....etc).
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9.5 To clear all Error code
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1.Press “STOP/TUNE MODE” button for 5 seconds.
2.FL indicator shows “CLEAR” for 1 second and change to “T”.
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9.6 How to get out from Self-Diagnostic
function
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1.Press “Power” button OFF.
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9.7 Power Amplifier Failure (F61)
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1.When power amplifier fail, F61 will indicate automatically.
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10 Description of Error Code
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10.1 Error detection for Cassette Mechanism block
10.2 Error detection for CD/Changer block
10.3 Power Supply related error detection
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10.1 Error detection for Cassette Mechanism
block
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No. Error ErrorDisplay Problem condition
1 MODE SWdetection error H01 Faulty operation of cassette mechanism.Faulty contact or short-circuit of mechanism mode switch (S951,
S971).
2 REC INH SWdetection
error
3 HALF SWdetection error H03 Playback cannot perform.Faulty contact or short-circuit of HALF siwtch (S952, S972).
4 Reel Pulsedetection error F01 The tape advances slightly and then stops.Faulty reel pulse, faulty hole detect IC (IC951, IC971).
5 TPS abnormal F02 Cassette deck will not perform TPS function.Faulty playback EQ/recording amplifier IC (IC101).
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H02 Recording not possible.Faulty contact or short-circuit of REC INH switch (S974, S975).
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10.2 Error detection for CD/Changer block
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No. Error ErrorDisplay Problem condition
1 REST SW detection error F15 CD does not function.This error occurs when the Optical Pick Up REST SW (S701) is not
2 CD tray opens automatically F16 CLAMP switch (S4) NG (Check & Replace)
3 Does not startup when [PLAY]button is pressed F17 BOTTOM switch (S5) NG (Check & Replace)
4 Transmission error between CDservo LSI and micon F26 CD does not function.This error occurs when the POWER is ON for the CD block and an error is
5 Startup fails even when youinsert CD or the selected disc tray
does not open
6 Cannot insert CD F28 Tray 1 detect switch NG (Check & Replace)
7 Cannot eject CD F29 Check if disc is stuck. Tray 2 detect switch NG (Confirm & Replace)
8 The CD tray closes H15 CD disc tray detect switch NG (S3) (Check & Replace)
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detected within the specified time (about 8 seconds)
detected after the transmission has started.
F27 Tray 1 detect switch or Tray 2 detect switch NG (Check & Replace)
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10.3 Power Supply related error detection
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No. Error ErrorDisplay Problem condition
1 POWER AMPoutput abnormal F61 When POWER is switched on, power become off automatically.During normal operation, if DC DET become L, PCNT shall become
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L and the error display on the left shall be displayed. (IC501)
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11 CD Test Mode Function
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This CD test mode is provided to check CD unit without connecting to changer loading mechanism. This mode shall operate CD PLAY with CD unit
being connected only and CD Automatic Alignment result is shown on FL display.
11.1 How to set CD test mode
11.2 CD Automatically Adjustment result indication
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11.1 How to set CD test mode
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11.2 CD Automatically Adjustment result
indication
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Under CD test mode, pressing the numeric key ‘0’ on the remote controller will display the auto
adjustment result. FLOCK, TLOCK and CLVS status shall be shown as below:
During the above display, executing CD PLAY will display auto adjustment result for CD PLAY
mode.
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15 Block Diagram
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16 Schematic Diagram
Note:
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(All schematic diagrams may be modified at any time with the development of the new technology)
l S701
: Reset switch
l
S600
: Power switch
l S601
: Display switch
l
S602
: Disc 1 switch
l
S603
: Disc 2 switch
l
S604
: Disc 3 switch
l
S605
: Disc 4 switch
l S606
: Disc 5 switch
l
S607
: CD open/ Close switch
l S910
: CD Play switch
l
S911
: Tape Play switch
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