Panasonic SA-PM250EB / SA-PM250EC / SA-PM250EE / SA-PM250EF / SA-PM250EG (serv.man2) Service Manual ▷ View online
9
2.4.
Handling Precaution for Traverse Unit
The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be
taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the Traverse Unit.
taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the Traverse Unit.
2.4.1.
Cautions to Be Taken in Handling the Optical Pickup Unit
The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body.
Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.
Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.
1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.
2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed
2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed
should be short-circuited with a short pin or a clip.
3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable.
4. The antistatic FFC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexi-
4. The antistatic FFC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexi-
ble cable, cut off the antistatic FFC.
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2.4.2.
Grounding for electrostatic breakdown prevention
Some devices such as the CD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electricity
in the working environment. Proceed servicing works under the working environment where grounding works is completed.
in the working environment. Proceed servicing works under the working environment where grounding works is completed.
2.4.2.1.
Worktable grounding
1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.
2.4.2.2.
Human body grounding
1. Use the anti-static wrist strap to discharge the static electricity form your body.
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3 Service Navigation
3.1.
Service Information
This service manual contains technical information which will allow service personnel’s to understand and service this model.
Please place orders using the parts list and not the drawing reference numbers.
Please place orders using the parts list and not the drawing reference numbers.
If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service
manual.
manual.
3.1.1.
Firmware update
• Software Update through USB
Steps:
1. Power On Set.
2. Go to USB selector.
3. Plug In USB (containing FW_IMAGE.BIN & FWUPDATE (disc image file)) or PM250.FRM file.
4. Display will show 'READING' (blink)
2. Go to USB selector.
3. Plug In USB (containing FW_IMAGE.BIN & FWUPDATE (disc image file)) or PM250.FRM file.
4. Display will show 'READING' (blink)
→ UPD 0% to 100%.
5. After Software Update complete, display will be show [SUCCESS].
6. Plug out USB.
7. AC out set.
8. Software Update Process Finish.
6. Plug out USB.
7. AC out set.
8. Software Update Process Finish.
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4 Specifications
Q Amplifier Section
RMS Output Power Stereo Mode
Front Ch (both ch driven)
RMS Output Power Stereo Mode
Front Ch (both ch driven)
10 W per channel (6
Ω), 1 kHz, 10% THD
Total RMS Stereo mode power
20 W
Q Tuner, Terminals Section
Preset Station
Preset Station
FM 30 stations
Frequency Modulation (FM)
Frequency range
Frequency range
87.50 MHz to 108.00 MHz
(50 kHz step)
Antenna terminals
75
Ω (unbalanced)
Q Disc Section
Disc played (8 cm or 12 cm)
Disc played (8 cm or 12 cm)
CD, CD-R/RW (CD-DA, MP3*)
Pick up
Wavelength
Wavelength
790 nm (CD)
*MPEG-1 Layer 3, MPEG-2 Layer 3
Q USB Section
USB port
USB Standard
USB port
USB Standard
USB 2.0 full speed
Media file format support
MP3 (*.mp3)
USB device file system
FAT 12, FAT 16, FAT 32
USB port power
DC OUT 5 V, 500 mA
Q Bluetooth Section
Version
Version
Bluetooth
®
Ver. 2.1 + EDR
Class
Class 2
Supported profiles
A2DP, AVRCP
Operating Frequency
2.4 GHz band FH-SS
Operation distance
10 m Line of sight
Q Speaker Section
Speaker unit(s)
Full range
Speaker unit(s)
Full range
10 cm cone type x 1 per channel
Impedance
6
Ω
Dimensions (W x H x D)
139 mm x 224 mm x 136 mm
Mass
1.3 kg
Q General
Power supply
Power supply
AC 220 to 240 V, 50 Hz
Power consumption
14 W
Dimensions (W x H x D)
184 mm x 123 mm x 228 mm
Mass
1.1 kg
Operating temperature range
0
°C to +40°C
Operating humidity range
35% to 80% RH (no condensation)
Power consumption in standby mode:
(With “BLUETOOTH STANDBY”
set to “OFF”)
(With “BLUETOOTH STANDBY”
set to “OFF”)
0.2 W (approximate)
(With “BLUETOOTH STANDBY”
set to “ON”)
set to “ON”)
0.3 W (approximate)
Note:
1. Specifications are subject to change without notice. Mass and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum ana-
lyzer.
Q System : SC-PM250EB-S
1. Specifications are subject to change without notice. Mass and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum ana-
lyzer.
Q System : SC-PM250EB-S
Music center: SA-PM250EB-S
Speaker: SB-PM02EG1-K
Q System : SC-PM250EC-S
Music center: SA-PM250EC-S
Speaker: SB-PM02EG1-K
Q System : SC-PM250EE-S
Music center: SA-PM250EE-S
Speaker: SB-PM02EG1-K
Q System : SC-PM250EF-S
Music center: SA-PM250EF-S
Speaker: SB-PM02EG1-K
Q System : SC-PM250EG-S
Music center: SA-PM250EG-S
Speaker: SB-PM02EG1-K
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