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.
Model No.
Indication Mark
NV-SJ400A
(SJ400)
NV-SJ200A
(SJ200)
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
2
Summary of Contents for NV-SJ400A
Page 16: ...10 2 CASING PARTS SECTION 16...
Page 17: ...10 3 PACKING PARTS SECTION 17...
Page 18: ...18...
Page 28: ...L7701 VLQ0599J680 COIL 68UH 1 28...
Page 30: ...R1006 ERDS2TJ102 C RESISTOR 1 4W 1K 1 30...
Page 36: ...C3007 ECUM1E563KBN C CAPACITOR CH 25V 0 056U 1 36...
Page 40: ...L1250 VLQ0655K220 COIL 22UH 1 40...
Page 42: ...QR3011 MUN2213 TRANSISTOR 1 42...
