Panasonic NV-SJ200AM Manuale utente

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ORDER NO. VRD0007022C3

Video Cassette Recorder

NV-SJ200AM / NV-SJ200SA / NV-SJ200BD / NV-SJ202SA /

NV-SJ205AM / NV-SJ205EU / NV-SJ205AU / NV-SJ207AF

Z-MECHANISM

SPECIFICATIONS

law.

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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-SJ200AM (A)

NV-SJ200SA, NV-SJ202SA (B)

NV-SJ200BD (C)

NV-SJ205AM (D)

NV-SJ205EU/AU (E)

NV-SJ207AF (F)

3. There are 3 types of each "AM" model. (NV-SJ200AM and NV-SJ205AM)

Type-1.Not indicated the country of origin.

Type-2.Indicated the country of origin in the Name Plate of the rear side of VCR.(Except Malaysian market)

Type-3.Indicated the country of origin in the Name Plate of the rear side of VCR.(For Malaysian market)

The 3 types of each VCR do not have difference in electrical. However, any standard accessories and packing parts are

different. Therefore they are indicated in Remarks column in the Mechanical parts list as following table.

When servicing, confirm the type of VCR and be sure to make your order replacement parts according to the parts list.

Model No. Type Indication in Remarks

column in the parts list

NV-SJ200AM 1. Not indicated the country of origin NV-SJ200AM

2. Indicated the country of origin (except Malaysian Market) NV-SJ200AMC

3. Indicated the country of origin (For Malaysian Market) NV-SJ200AMM

NV-SJ205AM 4. Not indicated the country of origin NV-SJ205AM

5. Indicated the country of origin (except Malaysian Market) NV-SJ205AMC

6. Indicated the country of origin (For Malaysian Market) NV-SJ205AMM

2. GENERAL DESCRIPTIONS

2.1. SERVICE INFORMATION

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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

Method:

Before replacing IC6001, MAIN C.B.A. and/or B6001:

1. Take a note that stored TV broadcasts channels.(Because , its user may store TV broadcasts by manually other than

"Auto Tuning" operation and it is also erased.)

After replacing IC6001, MAIN C.B.A. and/or B6001:

1. Turn on the VCR.

2. Connect a jumper wire between TL7509 and TL7510 for 1 second to reset IC6001.

After resetting IC6001:

1. Store TV broadcasts channels by Auto/Manual Tuning using the On Screen Display according to note which taken before

replacing IC6001, MAIN C.B.A. and/or B6001.

2. Set the Direct Rec function to OFF using On Screen Display if necessary. / (Because, Direct Rec function is set

automatically to ON after resetting IC6001.) / [Direct Rec Function] / OFF: Normally set at this position. / ON: This

settingenables Direct Rec. / AV1 Input(A1) becomes exclusive channel for Direct Rec.

3. Perform the PG SHIFTER ADJUSTMENT. / (Refer to the Electrical Adjustment Procedures.)

Note:

1. It should be performed before tuning.

2. Do not cut off the power source during reset.

Fig. S1

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2.1.2. CYLINDER UNIT REPLACEMENT

1. CYLINDER UNIT REPLACEMENT

A. Remove the mechanism unit from MAIN C.B.A./Chassis by referring“SECTION 3. Disassembly Method”.

B. Remove the 3 screws (A) of the CYLINDER UNIT with a screw driver.

C. Unlock the 4 locking tabs (B) and disconnect the Cylinder fiexible card from the FPC Holder.

D. Remove the CYLINDER UNIT.

CAUTION:

Handle the Cylinder flexible card with care. When it damaged, you should replace whole Cylinder unit.

Fig. S2

2. UPPER CYLINDER DISASSEMBLY

A. Remove 2 screws (A).

B. Remove the Cylinder Stator Unit.

C. Remove 2 screws (B).

D. Remove the Cylinder Rotor Unit.

E. Loose Hex screw (C) (1.5 mm) and remove the CYLINDER RETAINER.

F. Remove the Upper Cylinder.

Fig. S3

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3. UPPER CYLINDER ASSEMBLY

When reassembling, perform the steps in the reverse order.

Notes:

1. Install the Cylinder Retainer so that the 2 holes on top of the Cylinder Retainer are at right angles with the Cylinder

Connection.

2. Tighten the Hex screw (C) (1.5 mm) while pressing down on top of the Cylinder Retainer.

Fig. S4

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3. Install the Cylinder Rotor Unit so that the inner hole of the Cylinder Rotor Unit fits to the small projection (D) on top of the

Upper Cylinder.

4. Tighten 2 screws (B).

Fig. S5

5. Install the Cylinder Stator Unit so that the rear side of the Cylinder Stator C.B.A. is parallel with the Cylinder Connection.

6. Tighten 2 screws (A).

Fig. S6

7. Confirm the PG SHIFTER ADJUSTMENT with the alignment tape (PAL: VFJ8125H3F) and adjust it if necessary.

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2.1.3. CHECKING OF MAIN C.B.A.

When servicing the MAIN C.B.A., take out the MAIN C.B.A. and mechanism from the frame and turn over.

Fig. S7

2.1.4. FLAT CARD CABLE INSTALLATION

When installing the Flat Card Cable on the connector, install the Flat Card Cable with the cable contacts

facing the connector contacts.

Fig. S8

2.2. REMOVAL OF CASSETTE TAPE

There are 2 ways to remove a cassette tape.

1. Service Information Display Operation

A. Press the FF and EJECT keys simultaneosly for 3 seconds and set the Service Mode 7.

B. Press STOP key in order to rotate the Loading Motor for unloading operation. (Pay an attention of tape slack)

2. Manual Operation

A. Disconnect the AC Mains Lead and remove the Top Panel.

B. Rotate the Main Cam Gear clockwise until the Loading Posts move to fully unloaded position as shown inFig. S9.

(Tape is remaining)

Fig. S9

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C. Rotate the Capstan Motor clockwise from the bottom side to take up the tape.

Fig. S10

D. Rotate the Main Cam Gear clockwise until the cassette tape is ejected.

2.3. INTRODUCTION OF VIDEO HEAD CLEANING CASSETTE /

(POLISHING TYPE)

1. We are pleased to introduce Panasonic Video Head Cleaning Cassette,VFK0923FT [for service purposes]

andVFK0923FSE [ for end users] for all VHS/SVHS VCP and VCR.

2. These cleaning cassettes are exclusive removing the hard and sticky clogging on video heads.

3. These improve the efficiency of video head cleaning service and shortening cleaning time for end users.

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VFK0923FT

(For Service usage)

Type of Cassette Full VHS Cassette

Cleaning Time 10 Seconds/Time

Tape Length 20 m

Usability in a Path 180 Times

VFK0823FSE

(For end users)

Type of Cassette Full VHS Cassette

Cleaning Time 10 Seconds/Time

Tape Length 3.34 m

Usability in a Path 30 Times

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Note:

The tape material itself is the same in both types.

3. ADJUSTMENT PROCEDURES

3.1. DISASSEMBLY METHOD

3.1.1. DISASSEMBLY FLOW CHART

This flow chart indicates disassembly steps of the cabinet parts and the circuit boards in order to find the

necessary items for servicing.

When reassembling, perform the steps in the reverse order.

Fig. D1

3.1.2. DETAIL OF DISASSEMBLY METHOD

1. REMOVAL OF THE TOP PANEL

Remove 2 Screws (A)

(NV-SJ200AM/SA/BD,

SJ202SA, SA205AM,

SJ207AF)

Remove 4 Screws (A)

(NV-SJ205EU/AU)

Fig.D2

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