Panasonic NV-HS825EG Manuale utente

ORDERNO. VRD0108035C2

Video Cassette Recorder

NV-HS825EG / NV-HS825B / NV-HS825EC /

Z-MECHANISM

SPECIFICATIONS

Unauthorized copying and distribution isaviolation of law.

1. INTRODUCTION

This service manual contains technical information whichwill allowservice personnel to

understand and service this model.

If the circuit is changedormodified, this information will be followedbysupplementaryservice

manual tobe filedwithoriginal service manual.

Note:

1. Adjustment procedures, DisassemblyProcedures and Assembly

Procedures for Mechanism Chassisare separate volume from this

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

Mechanism Chassis. (Order No. VRD9802005C2)

2. The Model No. isindicated on the SchematicDiagram and Circuit

Board Diagrams as follows.

Model No. Indication Mark

NV-HS825EG (EG)

NV-HS825B (B)

NV-HS825EC (EC)

2. GENERAL DESCRIPTIONS

2.1. SERVICECAUTION

2.1.1. REPLACING IC6002/EEPROM

Whenthe EEPROM: IC6002 is replaced, applicable model code, option code, tuning channel

data and electrical adjustment data will not be available.

Therefore, enterand/oradjust the necessarydata afterreplacing IC6002 byreferring following

procedure.

STEP1.REPLACE THE IC6002

1. Take anote that stored TV broadcast channels.

2. Remove the C.B.A. with Mechanism unitbyreferring the

Disassemblyprocedure.

3. Disconnect the AC plug and replace the IC6002.

STEP2.INPUTTHE MODEL& OPTION CODE

1. Set up the applicablemodel code and option code byordering the

following table.

PROCEDURE F.I.P. DISPLAY

Turnon the Service Mode

1.Press the FF keyand the

EJECTkeysimultaneouslyfor

more than3 seconds.

Activate the Service Mode 2

2.While keepplacing FF key,

press the EJECTkeyintwice.

Activate the Entering Mode.

3.Press the EJECTkeyformore

than3 seconds.

Set the Mode 2.

4.Press the CH UP keyintwice.

Displaythe Setting Code.

5.Press the POWER Button to

turnthe poweron.

(Colon starts

flashing)

Enterthe Model and Option Code.

6.Service Screenis displayedon the monitor.

7.Set the applicable Model and Option code by

using REW, PLAY, STOP and FF keys on

theRemote Controller. (See Fig.S1 & S2)

Exit fromService Mode.

8.Press the POWER Button to

turnthe poweroff.

9. Press FF and EJECTkeys

simultaneouslyin6 times.

(Normal

Indication)

Fig.S1 Service Secreen(sample)

Model No. Model

Code Option

Code 1 Option

Code 2 Option

Code 3

NV-HS825EG 161

(A1h) 8

(08h) 240

(F0h) 0

(00h)

NV-HS825B 163

(A3h) 40

(28h) 240

(F0h) 0

(00h)

NV-HS825EC 162

(A2h) 8

(08h) 240

(F0h) 0

(00h)

Fig. S2 Model Code & Option Code

NOTE:

1. Tune the TV Broadcasting channelsbyreferring the memo.

2. Since all electrical adjustment data isstill not available, perform

the Electrical Adjustment continuously.

WHEN REPLACING THE MAIN C.B.A.

Since the user's Tape Librarydata is storedinIC6002;EEPROM, swapthe EEPROM taking from

Original MainC.B.A. and mount it ontothe NewMainC.B.A. tokeepmaintainthe user's Library

Data byordering the following procedure.

1. Take the IC6002; EEPROMfrom the new MainC.B.A. (to be used

as replacement.)and keep itaside.

2. Take the IC6002; EEPROMfrom the original MainC.B.A. (to be

replaced).

3. Mount the EEPROMbeing taken from original C.B.A. to the new

MainC.B.A.(to be used as replacement.)

4. Install the new MainC.B.A. to the VCR.

Whenordering the above procedure, setting of the model code, option code, tuning channel can

be skipped. / However, all electrical adjustment data is unique value inaccordance witha deck,

perform the Electrical Adjustment continuously.

2.1.2. CYLINDER UNITREPLACEMENT

1. CYLINDERUNITREPLACEMENT

A. Remove the mechanism unitfrom MAINC.B.A./Chassisby

referring “SECTION2. DisassemblyProcedure”.

B. Remove the 3screws(A)of the CYLINDERUNITwith ascrew

driver.

C. Unlock the 4locking tabs (B)and disconnect the Cylinder

fiexiblecard from the FPCHolder.

D. Remove the CYLINDERUNIT.

CAUTION:

Handlethe Cylinder fiexiblecard with care. When itdamaged, you

shouldreplace wholeCylinder unit.

Fig. S3

2. UPPERCYLINDERDISASSEMBLY

A. Remove 2screws(A).

B. Remove the Cylinder Stator Unit.

C. Remove 2screws(B).

D. Remove the Cylinder Rotor Unit.

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

RETAINER.

F. Remove the Upper Cylinder. Fig. S4

3. UPPERCYLINDERASSEMBLY

When reassembling, perform the steps inthe reverse order.

Notes:

1. Install the Cylinder Retainer so that the 2holes on top of the

Cylinder Retainer are at right angles with the P3502 Connection.

2. Tighten the Hex screw (C)(1.5mm) whilepressing downon top of

the Cylinder Retainer. Fig. S5

3. Install the Cylinder Rotor Unitso that the inner holeof the

Cylinder Rotor Unitfits to the small projection (D)on top of the

Upper Cylinder.

4. Tighten 2screws(B). Fig. S6

5. install the Cylinder Stator Unit.

6. Tighten 2screws(A). Fig. S7

7. Confirm the PG SHIFTERADJUSTMENTwith the alignment tape

(PAL: VFJ8125H3F) and adjust itifnecessary.

2.1.3. CHECKING OFMAIN C.B.A.

Whenservicing the MAIN C.B.A., take out the MAIN C.B.A. and mechanismfromthe frame and

turnover.

Fig. S8

2.1.4. FLATCARD CABLE INSTALLATION

Wheninstalling the Flat CardCable on the connector, install the Flat CardCable withthe cable

contacts facing the connectorcontacts.

Fig. S9

2.2. REMOVALOFCASSETTE TAPE

There are 2 ways toremove a cassette tape.

1. Service Information DisplayOperation

A. Press the FF and EJECTkeyssimultaneoslyfor 3seconds and

set the Service Mode 7.

B. Press STOPkeyinorder to rotate the Loading Motor for

unloading operation. (Payan attention of tape slack)

2. Manual Operation

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

B. Rotate the MainCam Gear clockwise until the Loading Posts

move to fullyunloaded position as shownin Fig. S10. (Tape is

remaining) Fig. S10

C. Rotate the Capstan Motor clockwise from the bottom side to

take up the tape. Fig. S11

D. Rotate the MainCam Gear clockwise until the cassette tape is

ejected.

2.3. INTRODUCTIONOFVIDEO HEAD CLEANING CASSETTE /

(POLISHING TYPE)

1. We are pleased to introduce PanasonicVideo Head Cleaning

Cassette, VFK0923FT [for service purposes] and VFK0923FSE [

for end users] for all VHS/SVHSVCPand VCR.

2. These cleaning cassettes are exclusive removing the hard and

stickyclogging on video heads.

3. These improve the efficiencyof video head cleaning service and

shortening cleaning time for end users.

VFK0923FT

(ForService usage)

Type of Cassette Full VHS Cassette

Cleaning Time 10 Seconds/Time

Tape Length 20 m

Usabilityina Path 180 Times

VFK0823FSE

(Forend users)

Type of Cassette Full VHS Cassette

Cleaning Time 10 Seconds/Time

Tape Length 3.34 m

Usabilityina Path 30 Times

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