Panasonic SA-AK250 - Table of Contents

(3) MP3*
*MPEG-1 Layer 3, MPEG-2 Layer 3
Bit rate
MP3 32 kbps to 320 kbps
Sampling frequency
MP3 32 kHz, 44.1 kHz, 48 kHz
CD-DA 44.1 kHz
Decoding 16 bit linear
Digital filter 8fs
D/A converter MASH (1 bit DAC)
Pick up
Wavelength 780 nm
Beam Source Semiconductor laser
A
udio output (Disc)
Number of channels 2 (Stereo) (FL, FR)
n GENERAL
Power supply AC 120 V, 60Hz
1 Safety Precautions
4
1.1. General Guidelines
4
1.2. Before repair and adjustment
4
1.3. Protection Circuitry
5
1.4. Safety Part Information
5
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
5
3 Handling Precautions For Traverse Unit
7
4 Precaution of laser diode
9
5 About Lead Free Solder (PbF)
10
5.1. Service caution based on legal restrictions
10
6 Accessories
11
7 Operating Procedures
12
7.1. Main Unit Key Buttons Operations
12
7.2. Remote Control Key Buttons Operations
13
8 New Features
14
8.1. Using the Music Port
14
9 Self diagnosis and special mode setting
16
9.1. Service Mode Summary Table
16
9.2. Special Mode Table 1
16
9.3. Reliability Test Mode (CRS1 Mechanism)
19
9.4. Error code Table Display
21
10 Assembling and Disassembling
26
10.1. Caution
26
10.2. Disassembly flow chart
27
10.3. Main Parts Location
28
10.4. Disassembly of Top Cabinet
29
10.5. Disassembly of CD Changer Unit (CRS1)
29
Power consumption 100 W
Power consumption in standby
mode
0.28 W
Dimensions (W x H x D) 250 x 330 x 323 mm
Mass 7.1 kg
Operating temperature range +5 to +35°C
Operating humidity range 5 to 90% RH (no condensation)
n SYSTEM
SC-AK250 (PL) Music center: SA-AK250 (PL)
Speaker: SB-AK250 (PL)
For Information on speaker system, plesae refer to the original
Service Manual (Order No. MD0704055CE) for SB-AK250PL-S.
Notes:
1. Specifications are subject to change without notice. Mass and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
10.6. Disassembly of Rear Panel
30
10.7. Disassembly of Main P.C.B.
31
10.8. Disassembly of Transformer P.C.B.
31
10.9. Disassembly of Power P.C.B.
32
10.10. Disassembly of Front Panel Unit
32
10.11. Disassembly for Panel P.C.B.
33
10.12. Disassembly of Tact Switch P.C.B.
34
10.13. Disassembly of Deck mechanism unit
34
10.14. Disassembly of Deck P.C.B.
34
10.15. Disassembly of Traverse Unit
35
10.16. Disassembly for Deck Mechanism
36
10.17. Disassembly of Deck Mechanism P.C.B.
39
10.18. Disassembly of cassette lid
40
10.19. Rectification for tape jam problem
40
11 Service Fixture and Tools
42
12 Service Positions
42
12.1. Checking and Repairing of Main P.C.B.
42
12.2. Checking and Repairing of Transformer P.C.B.
43
12.3. Checking and Repairing of Panel, Deck & Deck
Mechanism P.C.B.
43
12.4. Checking and Repairing of Power P.C.B.
44
13 Procedure for Checking Operation of Individual Parts of Deck
Mechanism Unit
45
13.1. Operation Check with Cassette Tape
45
13.2. Operation Check without Cassette Tape
45
14 Measurement And Adjustments
47
14.1. Cassette Deck Section
47
15 Voltage and Waveform Chart
49
CONTENTS
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SA-AK250PL