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9

The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation. 

The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86

°

F) more than that

of the normal solder.

• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.

(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)

• To put lead free solder, it should be well molten and mixed with the original lead free solder.
• Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the

lead free solder.

• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees

C (662±86

°

F).

• The following 3 types of lead free solder are available through the service parts route.

RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)

* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%

The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
 
(See right figure)

10

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 BD Drive.

Figure 1

Some devices such as the DVD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electric-
ity in the working environment. Proceed servicing works under the working environment where grounding works is completed.

1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.

1. Use the anti-static wrist strap to discharge the static electricity form your body.

Figure 2

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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.

If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with the original ser-
vice manual.

• BD Drive & Digital Circuitries:
1) This service manual does not contain the following information, due to the impossibility of servicing at
     component level.
 
   - Schematic Diagram, Block Diagram and Eletrical Replacement partlist for individual of Digital Circuitries.

2) The following category are recycle module part. Please send them to Central Repair Center.
 
   - BD Drive & Main P.C.B. Assembly (BT735EB: RFKNBT735EBA)
                                                           (BT735EG: RFKNBT735EGA)
                                                           (BT735EP: RFKNBT735EPA)
                                                           (BT735EE: RFKNBT735EEA)

• Wireless system (optional)
1) This model supports to wireless surround speaker (SH-FX71E-K).
 
2) For information of wireless system, please refer to original service manual (Order No.: PSG1002002CE) 

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Download latest Firmware and burn it on CD-R or CD-RW, and update Firmware.

After making repairs, we recommend performing the following inspection, to check normal operation. 

Use the following checklist to establish the judgment criteria for the picture and sound. 

No. 

Procedure 

Item to Check 

1

Turn on the power, and confirm items pointed out. 

Items pointed out should reappear. 

2

Insert RAM disc.

The Panasonic RAM disc should be recognized. 

4

Perform playback for one minute using the RAM disc. 

No abnormality should be seen in the picture, sound or operation. 
*Panasonic DVD-RAM disc should be used when recording and play-
back. 

5

Perform playback for one minute using the BD-Video disc.

No abnormality should be seen in the picture, sound or operation.

6

If a problem is caused by a BD-Video disc, VCD, DVD-R, DVD-
Video, Audio-CD, or MP3, playback the test disc. 

No abnormality should be seen in the picture, sound or operation. 

7

After checking and making repairs, upgrade the firmware to the 
latest version. 

Make sure that [UPD OK] appears in the FL displays. 
*[UNSUPPORT] display means the unit is already updated to newest 
same version. Then version up is not necessary. 

8

Transfer [9][9] in the service mode setting, and initialize the ser-
vice settings (return various settings and error information to 
their default values. The laser time is not included in this initial-
ization). 

Make sure that [CLR] appears in the FL display. 
After checking it, turn the power off. 

Item Contents Check 

Item Contents Check 

Picture 

Block noise 

Sound 

Distorted sound 

Crosscut noise 

Noise (static, background noise, etc.) 

Dot noise 

The sound level is too low. 

Picture disruption 

The sound level is too high. 

Not bright enough 

The sound level changes. 

Too bright 
Flickering color 
Color fading