Panasonic DMR-E55PL, Servise Manual

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Output impedance: 47 k
Ω
Output LINE (pin jack) x1
Reference output: 309mVrms
FS: 2 Vrms (1 kHz, 0 dB)
Output impedance: 1 k
Ω
(Load impedance: 10 k
Ω
Number of channels Recording: 2 channels
Playback: 2 channels
Other input/output connectors Digital audio optical output
connector
Operating temperature range 5°C-40°C
Operating humidity range 10 %-80 % RH (no condensation)
Clock unit Quartz-controlled 12-hiur digital
display
n
LASER SPECIFICATION (Class I LASER Product)
1 Safety precautions 4
1.1. General guidelines 4
1.2. Caution for fuse replacement 4
2 Prevention of Electrostatic Discharge (ESD) to Electrostatic
Sensitive (ES) Devices 5
3 Precaution of Laser Diode 6
4 How to replace the Lithium Battery 7
5 Handling the Lead-free Solder 7
5.1. About lead free solder (PbF) 7
6 Each Buttons 8
7 New Features 9
7.1. Function of Power Circuit (IC1150) 9
8 Taking out the Disc from RAM-Drive Unit when the Disc
cannot be ejected by OPEN/CLOSE button 12
8.1. Forcible Disc Eject 12
8.2. When the Forcible Disc Eject can not be done. 12
9 Service Explorer 13
10 Self-Diagnosis and Special Mode Setting 16
10.1. Self-Diagnosis Functions 16
10.2. Special Modes Setting 17
10.3. Service Modes 19
11 Assembling and Disassembling 23
11.1. Disassembly Flow Chart 23
11.2. P.C.B. Positions 23
11.3. Top Case 24
11.4. Digital P.C.B. 24
11.5. Front Panel 24
11.6. Panel P.C.B. 25
11.7. DVD-RAM Drive 25
Wave length 795 nm 658 nm
Laser power No hazardous radiation is emitted
with the safety protection
Power supply AC 110-240, 50/60 Hz
Power consumption 25 W
Dimensions Approx.
430 (W) x 79 (H) x 274 (D) mm
(excluding protrusions)
Mass Approx. 3.3 kg
Power consumption in standby
mode approx. 2.9 W
Notes:
Mass and dimensions are aproximate.
Specifications are subject to change without notice.
11.8. Rear Panel 25
11.9. Main P.C.B. 26
11.10. Power P.C.B. 26
12 Service Fixture and Tools 27
13 Service Positions 28
13.1. Checking and Repairing of Power P.C.B. 28
13.2. Checking and Repairing of Main P.C.B. 29
13.3. Checking and Repairing of Digital P.C.B. 30
13.4. Checking and Repairing of DVD-RAM Drive 31
14 Adjustment Procedures 32
14.1. After replacing the RAM Drive with new one 32
14.2. When the unit does not operate normally after replacing
the Timer Microprocessor with new one 32
15 Standard Inspection Specifications after Making Repairs 32
16 Voltage and Waveform Chart 33
16.1. Power P.C.B. 33
16.2. Main P.C.B. 33
16.3. Panel P.C.B. 35
16.4. P9001 Connector 35
16.5. P9001 Waveform 36
17 Abbreviations 37
18 Block Diagram 39
18.1. Digital Block IC Pin Terminal Chart (TC1-18) 53
19 Schematic Diagram 57
19.1. MAIN (SUB POWER) CIRCUIT (P) 57
19.2. MAIN (MAIN NET) CIRCUIT (M) 59
19.3. MAIN (VIDEO I/O) CIRCUIT (V) 61
19.4. MAIN (AUDIO MAIN) CIRCUIT (A) 65
19.5. MAIN (TIMER) CIRCUIT (T) 67
CONTENTS
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DMR-E55PL