Panasonic NV-SJ400A Service Manual page 2

Hide thumbs Also See for NV-SJ400A:

1. INTRODUCTION

This service manual contains technical information which will allow service personnel to

understand and service this model.

If the circuit is changed or modified, this information will be followed by supplementary service

manual to be filed with original service manual.

Note:

1. Adjustment procedures, Disassembly Procedures and Assembly

Procedures for Mechanism Chassis are separate volume from this

service manual. / Please refer to the service manual for Z-

Mechanism Chassis. (Order No. VRD9802005C2)

2. The Model No. is indicated on the Schematic Diagram and Circuit

Board Diagrams as follows.

NV-SJ400A

NV-SJ200A

2. GENERAL DESCRIPTIONS

2.1. SERVICE INFORMATION

2.1.1. MICROPROCESSOR RESET

When the Microprocessor IC6001, MAIN C.B.A. and/or Back-up Battery B6001 are replaced, read

following procedure carefully and proceed it.

Reasons:

There is a RAM in the IC6001, which is backing up:

1. TV Tuning Data.

2. PG shifter Adjustment Data

3. Option Setting Data

When IC6001, MAIN C.B.A. and/or Back-up Battery B6001 are replaced, all above listed data

become not available.

These data are backing up by using the power source of:

AC connected: AC Power source

AC Disconnected: Back-up Battery B6001

Model No.

Indication Mark

(SJ400)

(SJ200)

Nv-sj200a