Read Panasonic SA-PM41P / SA-PM41PC Service Manual online
n Amplifier Section
Power output
10%, Total harmonic distortion
60 Hz-3 kHz, both channels driven
(Low channel)
26 W per channel (6
Ω)
3 kHz-16 kHz, both channels driven
(High channel)
29 W per channel (6
Ω)
Total Bi-Amp power
55 W per channel
Power output
10% Total harmonic distortion
1 kHz, both channels driven
(Low channel)
35 W per channel (6
Ω)
8 kHz, both channels driven
(High channel)
35 W per channel (6
Ω)
Total Bi-Amp power
70 W per channel
Output Impedance
Headphone
16
Ω - 32 Ω
n FM Tuner Section
Frequency range
87.5 MHz - 108.0 MHz
(100 kHz steps)
87.9 MHz - 107.9 MHz
(200 kHz steps)
Sensitivity
1.5 µV (IHF)
S/N 26dB
1.5 µV
Antenna terminal(s)
75
Ω (unbalanced)
n AM Tuner Section
Frequency range
520kHz - 1710 kHz (10kHz steps)
2005 Co. .
SA-PM41P
SA-PM41PC
SA-PM41PC
Colour
(S)... Silver Type
(S)... Silver Type
Sensitivity
S/N 20 dB (at 1000 kHz)
560 µV/m
n Cassette Deck Section
Track system
4 track, 2 channel
Heads
Record/playback
Solid permoy head
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
Over frequency response (+3 dB, -6 dB) at DECK OUT)
NORMAL (TYPE I)
35 Hz - 14 kHz
S/N RATIO
45dB (A weighted)
Wow and flutter
0.10% (WRMS)
Fast forward and rewind time
Approx. 120 seconds with C-60
cassette tape
n CD Section
Disc
CD, CD-R, CD-RW, MP3
8cm / 12cm (3
3
/
20
” / 4
73
/
100
”)
Sampling frequency
44.1 kHz
Decoding
16 bit linear
Beam source / wavelength
Semiconductor laser / 780 nm
Number of channels
Stereo
Frequency response
20 Hz - 20 kHz (+1dB, -2 dB)
Wow and flutter
Below measurable limit
Digital filter
8 fs
CD Stereo System
Specification
ORDER NO. MD0501004C1
A6
D/A converter
MASH (1 bit DAC)
MP3
Bit rate
32kbps - 320kbps
Sampling frequency
32kHz, 44.1kHz, 48kHz
n Speaker Section
Type
2 way, 2 speaker system
Speaker(s)
Full Range
10 cm (4”) cone type
Tweeter
6 cm (2
3
/
8
”) cone type
Impedance
6
Ω
Input power
HIGH
70 W (Max)
LOW
70 W (Max)
Output sound pressure level
80 dB/W (1.0 m)
Frequency range
55 Hz - 22 kHz (-16 dB)
70 Hz - 20 kHz (-10 dB)
Dimensions (W x H x D)
128 mm x 250 mm x 222 mm
(5
1
/
32
” x 9
27
/
32
” x 8
3
/
4
”)
1 Safety Precautions
4
1.1.
GENERAL GUIDELINES
4
2 Before Repair and Adjustment
6
3 Protection Circuitry
6
4 Handling the Lead-free Solder
7
4.1.
About lead free solder (PbF)
7
5 Precaution of Laser Diode
8
6 Handling Precautions For Traverse Deck
9
7 Accessories
10
8 Operation Procedures
11
9 Information on Disc & MP3
12
10 Assembling and Disassembling
13
10.1. Disassembly flow chart
13
10.2. Disassembly of Side Panel L & R
14
10.3. Disassembly of Top Cabinet
14
10.4. Disassembly of Deck P.C.B. and Tape Eject P.C.B.
14
10.5. Disassembly of Front Panel
15
10.6. Disassembly of Main Control P.C.B., Function P.C.B. and
Power In P.C.B.
16
10.7. Disassembly of Panel P.C.B.
17
10.8. Disassembly of Rear Cabinet
17
10.9. Disassembly of Main P.C.B.
18
10.10. Disassembly of Transformer P.C.B.
18
10.11. Disassembly of Tuner Pack
19
10.12. Disassembly of Power P.C.B.
19
10.13. Disassembly of CR16 Mechanism
19
10.14. Replacement of CD Lid
20
Mass
1.95 kg (4.30 Ibs)
n General
Power supply
AC 120 V, 60 Hz
Power consumption
130 W
Dimensions (W x H x D)
179 mm x 250 mm x 383 mm
(7
1
/
16
” x 9
27
/
32
” x 15
3
/
12
”)
Mass
5.24 kg (11.55 Ibs)
Power consumption
in standby
mode
0.8 W
Notes :
1. Specifications are subject to change without notices. Mass and
dimensions are approximate.
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
analyzer.
3. The labels “HIGH” and “Low” on the rear of the speakers.
n System : SC-PM41P-S
Music center: SA-PM41P-S
Speaker: SB-PM41P-S
n System : SC-PM41PC-S
Music center: SA-PM41PC-S
Speaker: SB-PM41P-S
10.15. Replacement of Cassette Lid
21
10.16. Replacement of the Power IC and Transistors
22
10.17. Procedure for Replacing Pinch Roller and Head Block
(Cassette Mechanism Unit)
23
10.18. Procedure for Replacing Motor, Capstan Belt A, Capstan
Belt B, and Winding Belt (Cassette Mechanism Unit)
23
10.19. Procedure for Replacing Parts on Mechanism PCB
25
10.20. Disassembly of CR16 Mechanism
25
10.21. Replacement of optical pickup unit (CD mechanism)
26
10.22. Replacement of a traverse gear A and a traverse gear B
28
10.23. Procedure for removing CD loading mechanism
29
10.24. CR16 mechanism disassembly procedure
29
10.25. CR16 MECHANISM ASSEMBLY PROCEDURE
35
10.26. Disassembly of traverse mechanism
48
10.27. Handling of cassette tape jam
49
11 Service Positions
50
11.1. Checking procedure
50
11.2. Checking the major P.C.B
50
12 Self-Diagnostic Display Function
51
12.1. Entering into Self-Diagnostic Mode
51
12.2. Clearing Self-Diagnostic Memory
52
12.3. Displaying Self-Diagnostic Results
53
12.4. Error Code Table
53
12.5. Cassette Mechanism Self-Diagnostic Mode
54
12.6. Changer Reliability Test Mode
54
12.7. Changer Operation Checking
55
CONTENTS
Page
Page
2
SA-PM41P / SA-PM41PC
12.8. CR16 Mechanism Ageing Mode
55
13 Procedure for Checking Operation of Individual Parts of
Cassette Mechanism Unit
57
13.1. Operation Check with Cassette Tape
57
13.2. Operation Check without Cassette Tape
57
14 Measurement And Adjustments
59
14.1. Cassette Deck Section
59
15 Voltage Measurement
61
15.1. CD Servo P.C.B. (REPV0039A)
61
15.2. Main P.C.B. (REPV0062A)
62
15.3. Main Control P.C.B. (REPV0062A)
63
15.4. Deck P.C.B. (REPV0016B)
63
15.5. Deck Mechanism P.C.B. (REPX0321H)
63
15.6. CD Loading P.C.B. (REP3569A)
64
15.7. Power P.C.B. (REPV0038F)
64
15.8. Panel P.C.B. (
REPV0062A)
64
15.9. Transformer P.C.B. (REPV0038F)
64
16 Waveform Chart
65
17 Block Diagram
66
17.1. CD SERVO Block
66
17.2. MAIN Block
68
18 Notes of Schematic Diagram
74
19 Schematic Diagram
75
19.1. CD SERVO CIRCUIT
75
19.2. MAIN CIRCUIT
77
19.3. MAIN CONTROL CIRCUIT, PANEL CIRCUIT, POWER IN
CIRCUIT and FUNCTION CIRCUIT
81
19.4. DECK CIRCUIT, DECK MECHANISM CIRCUIT and TAPE
EJECT CIRCUIT
84
19.5. POWER CIRCUIT
86
19.6. TRANSFORMER CIRCUIT
89
19.7. CD LOADING CIRCUIT
90
20 Printed Circuit Board
91
20.1. CD SERVO P.C.B.
91
20.2. MAIN P.C.B.
92
20.3. MAIN CONTROL P.C.B. and PANEL P.C.B.
94
20.4. POWER IN P.C.B., FUNCTION P.C.B. and DECK
MECHANISM P.C.B.
95
20.5. DECK P.C.B. and TAPE EJECT P.C.B.
96
20.6. POWER P.C.B.
97
20.7. TRANSFORMER P.C.B.
98
20.8. CD LOADING P.C.B.
99
21 Wiring Connection Diagram
100
22 Illustration of IC 痴, Transistors and Diodes
102
23 Terminal Function of ICｴs
103
23.1. IC302 (C2CBJG000575) MICRO PROCESSOR
103
23.2. IC702 (MN6627953HB) Servo processor/ Digital signal
processor/ Digital filter/ D/A converter
104
23.3. IC703 (BA5948FPE2) IC 4CH DRIVE
104
24 Troubleshooting Flowchart (CD Section Circuit)
106
25 Parts Location and Replacement Parts List
108
25.1. Deck Mechanism
109
25.2. CD LOading Mechanisms
111
25.3. Cabinet Part List
116
25.4. Electrical Part List
120
25.5. Packaging Materials & Accessories Parts List
129
25.6. Packaging
129
3
SA-PM41P / SA-PM41PC
(This “Safety Precaution” is applied only in U.S.A.)
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.
3. After servicing, check for leakage current checks to prevent from being exposed to shock hazards.
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
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
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 1M
chassis, the reading should be between 1M
Ω 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 1.5k
2. Connect a 1.5k
Ω, 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 measuremen ts.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may
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 measuremen ts.
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 measuremen t 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.
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.
4
SA-PM41P / SA-PM41PC
