DOWNLOAD Panasonic UB-T780 Service Manual ↓ Size: 2.38 MB | Pages: 89 in PDF or view online for FREE

Model
UB-T780
Pages
89
Size
2.38 MB
Type
PDF
Document
Service Manual
Brand
Device
Service Manual / Other / ELECTRONIC BOARD (ELITE PANABOARD)
File
ub-t780.pdf
Date

Panasonic UB-T780 Service Manual ▷ View online

3
UB-T780
1 General Precaution
1.1.
Safety Precaution
1.2.
Electrical Test
1. Unplug the power cord and check for continuity between the earth ground connection on the plug and the metal cabinet.
There should be zero ohm resistance.
2. With the unit unplugged, short the AC Live-Neutral of the plug with a jumper wire.
3. Turn ON the power switch.
4. Measure the resistance value with an ohmmeter between the shorted AC plug and each exposed metal cabinet part, such as
screwheads, etc.
Note:
Some exposed parts may be isolated from the chassis by design. They read infinity.
5. If the measurement is less than 1 M
Ω, a possibility for electric shock may exist.
Note:
This hazardous condition must be corrected before the unit is returned to the end user.
4
UB-T780
1.3.
For Service Technicians
• Repair service shall be provided in accordance with repair technology information such as service manual so as to pre-
vent fires, injury or electric shock, which can be caused by improper repair work.
1. When performing repairs, neither the product nor its parts or components shall be modified. 
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced. 
3. FASTON terminals shall be plugged straight in and unplugged straight. 
• ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not touch IC or LSI pins with bare fingers.
1.4.
About Lead Free Solder (PbF: Pb free)
Note
• In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder
that contains lead.
• We will use PbF when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),
Silver (Ag), and Copper (Cu).
• This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and
repair work we suggest using the same type of solder.
Distinction of PbF PCB
• PCBs (manufactured) using lead free solder will have a PbF stamp on the PCB.
Caution
• PbF solder has a melting point that is 50 
°F - 70 °F, (30 ° - 40 °C) higher than Pb solder. 
Please use a soldering iron with temperature control and adjust it to 700 
°± 20 °F (370 ° ± 10 °C). 
• Exercise care while using higher temperature soldering irons.:
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100
°F, (600°C).
• When applying PbF solder to double layered boards, please check the component side for excess solder which may
flow onto the opposite side (See figure, below).
1.4.1.
Suggested Pb free solder
We recommend you to use the following solder when re-soldering components for repair. Before using other Pb free solder than the
following solder, be sure to confirm that the solder maker (you use) has the license agreement for Pb free solder.
Supplier: Senju Metal Industry Co., Ltd. (http://www.senju-m.co.jp)
Part Description in Senju: EcoSolder RMA02 P3 M705 Series
1.5.
About RoHS
This product is fully compliant with the national laws transposed from the EU Directive on the restriction of the use of certain hazard-
ous substances (RoHS) in electrical and electronic equipment, effective 1 July 2006 in EU countries.
In order for the product to comply with the RoHS Directive, the six particular substances (lead, mercury, cadmium, hexavalent chro-
mium, polybrominated biphenyls, and polybrominated diphenyl ethers) have been either totally eliminated or limited to the concen-
tration level below maximum allowed. Consequently spare parts have been changed to RoHS-compliant parts where applicable.
Due to spare parts application of RoHS legislation, non-compliant spare parts cannot be used to repair compliant products put on
the EU market on or after 1 July 2006. Please therefore make sure to order and use RoHS-compliant spare parts listed in this man-
ual.
5
UB-T780
2 Introduction
2.1.
Before using this manual
This model (specifications, component parts, service parts, etc.) is different from area/country to area/country. This difference can
be distinguished by the Areas/Countries Distinction Mark (printed on the name plate). In this manual, the Areas/Countries Distinc-
tion Mark is used to distinguish this difference. When servicing, repairing or handling this model, check the Areas/Countries Distinc-
tion Mark and use this service manual.
Note:
In this service manual, the distinction mark(s) is (are) not listed regarding the common items.
6
UB-T780
2.2.
Specification
2.3.
Abbreviations
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  • Here you can View online or download the Service Manual for the Panasonic UB-T780 in PDF for free, which will help you to disassemble, recover, fix and repair Panasonic UB-T780 Service Manual / Other. Information contained in Panasonic UB-T780 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.