Panasonic NV-HV61GN, Service Manual

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Procedures for Mechanism Chassis are separate volume from this
service manual.
Please refer to the service manual for R4-Mechanism Chassis.
(Order No. VRD0202010C8)
2. The Model No. is indicated on the Schematic Diagram and Circuit
Board Diagrams as follows.
Model No. Indication Mark
NV-HV61GN (A)
NV-HV61EE (B)
NV-HV61GCU (C)
NV-HV61GH/GHT (D)
NV-HV61PX (E)
1.2. ABOUT LEAD FREE SOLDER (PbF)
Distinction of PbF PCB:
PCBs (manufactured) using lead free solder will have a PbF stamp on the PCB.
Caution:
- Pb free solder has a higher melting point than standard solder,
Typically the melting point is 50-70°F (30-40°C) higher. Please use
a high temperature soldering iron. In case of soldering iron with
temperature control,please set it to 700±20°F (370±10°C)
- Pb free solder will tend to splash when heated too high (about
1100°F/600°C).
When soldering or unsoldering, please completely remove all of the solder on the pins or solder
area, and be sure to heat the soldering points with the Pb free solder until it melts enough.
2. GENERAL DESCRIPTIONS
2.1. SERVICE CAUTION-1
When the Microprocessor IC6001 and/or Back-up battery B7751 are replaced, read the following
procedure carefully and proceed it.
[REASONS]
There is a RAM in the IC6001, which is backing up:
1. Programme Navigation Data [See NOTE1]
2. TV Tuning Data
3. PG Shifter Adjustment Data
3