Panasonic NV-HV61GC Bedienungsanleitung

ORDERNO. MAV0404001C3

Video Cassette Recorder

NV-HV61GL / NV-HV61GC / NV-HV61GCS / NV-HV61GCSX

R4-MECHANISM

SPECIFICATIONS

Unauthorized copying and distribution isaviolation of law.

1. INTRODUCTION

1.1. 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 R4-Mechanism Chassis.

(Order No. VRD0202010C8)

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

Board Diagrams as follows.

Model No. Indication Mark

NV-HV61GL (GL)

NV-HV61GC (GC)

NV-HV61GCS (GCS)

NV-HV61GCSX (GCSX)

1.2. ABOUTLEAD FREE SOLDER(PbF)

Distinction of PbF PCB:

PCBs (manufactured) using leadfree solderwill have a PbF stampon the PCB.

Caution:

-Pb free solder has ahigher melting point than standard solder,

Typicallythe melting point is50-70°F (30-40°C)higher. Please use

ahigh temperature soldering iron. Incase of soldering iron with

temperature control,please set itto 700±20°F (370±10°C)

-Pb free solder will tend to splash when heated too high (about

1100°F/600°C).

Whensoldering orunsoldering, please completelyremove all of the solderon the pins orsolder

area, and be sure toheat the soldering points withthe Pbfree solderuntil it melts enough.

2. GENERAL DESCRIPTIONS

2.1. SERVICECAUTION-1

Whenthe MicroprocessorIC6001 and/orBack-up batteryB7751 are replaced, readthe following

procedure carefullyand proceedit.

[REASONS]

There is a RAM inthe IC6001, whichis backing up:

1. Programme Navigation Data [See NOTE1]

2. TV Tuning Data

3. PG Shifter Adjustment Data

4. Option Setting Data

WhenIC6001 are replaced, all above listeddata become not available.

These data is backedup byusing the powersource of:

*AC Connected: AC Powersource

*AC Disconnected: Back-up Battery(B7751) & Back-up Capacitor(C7752)

[NOTE1]

As foryourreference, without inserting a tape intoa VCR, you canconfirm that the NAVI data

that is back up withIC6001 as showninthe following steps.

1. Indicate the "NAVI"mark on the Front Information Panel. (Press

the Menu button and select the option, then set the "NAVI"to ON

mode.)

2. Turn on the Service Mode and press the "NAVI"button on the

Remote Controller inmore than 5seconds. The "NAVI"data list is

displayed on the Monitor. (Press the "MENU"button on the

Remote Controller for cancellation.)

Although storedNAVI data canbe confirmedon the monitor, there is no waytotransferthe

NAVI data toIC6001whichis newlymounted.

2.1.1. REPLACING PROCEDURE [IC6001]

[1.PREPARATION]

Before replacing IC6001:

1. Take note that stored TV broadcast channels. (Because, its user

maystore TV broadcasts bymanuallyother than "Auto Tuning"

operation and itisalso erased.)

NOTE:

During servicing, do not make a short circuit betweenIC6001-pin37 (5V) withotherline/

Components otherwise IC6001 maybe broken.

CAUTION:

*When replacing the B7751, be sure to read/follow the "HOWTO

REPLACETHELITHIUMBATTERY" section.

[2.REPLACING PROCEDURE IN STEPS]

STEP1.PREPARATION

1. Disconnect the AC plug before removing the C.B.A. with

Mechanism unitbyreferring to the Disassemblyprocedure.

STEP2.REPLACE THE IC6001

1. Replace the IC6001. (Donot make ashort circuitbetween IC6001-

pin37 and other pins/Components.)

STEP3.RESETTHE IC6001 ATONCE

1. Connect the AC plug.

2. Connect ajumper wire between TL7510 (RESET) and TL7509

(GND)for asecond to reset the Microprocessor IC6001.

Note:

Since the resistance at pin2 as well as pin3 of IC6001 decides the model distinction data, there

is no needtoset up the Model code, whichis necessaryinthe previous models.

STEP4.LINE-IN SETTING & ACTIVATE PLUG-IN A.T.P.

(FOR OTHER THAN NV-HV61GL)

1. Press the Channel up and downkeyssimultaneouslyfor more

than 3seconds, under the condition of the no tape isinthe unit.

2. Confirm that "A1" and "A2" can be displayed on the FIPby

pressing the CH UPand CH DOWNbuttons.

NOTE:

If "DIRECTREC" on the OPTION setting screenis set to[ON], the input signal is fixedto"A1",

and the Channel up and downkeys are not effective.

3. Disconnect the AC plug for few seconds and connect itagain, and

press POWERbutton for turning the power to on from off to carry

out the "Plug inAuto Tuner Preset".

4. Since other than the channelsthat can be stored by"Auto

Tuning" operation are not availableyet, preset manuallyby

consulting the note of its availableTV channelsof which you took

before.

NOTE:

The Factoryshipping condition of OSD setting is not restoredbyabove operation.

5. Change the OSDsetting to the Factoryshipping condition if

necessary, byreferring to Option Setting on the Operating

Instructions as showninthe following chart.

STEP5.TAPE INTERCHANGEABILITY ADJUSTMENT

Refertothe Electrical Adjustment Procedures.

2.2. HOWTO REPLACETHELITHIUMBATTERY

2.2.1. GENERALDESCRIPTION

There is a RAM inthe IC6001, whichis backing up the following data byusing the powersource

of B7751 (Back-up Battery) and C7752 (Back-up Capacitor: Back-up time is approximately30

minutes).

1. Programme Navigation Data

2. TV Tuning Data

3. PG Shifter Adjustment Data

4. Option Setting Data

2.2.2. REPLACEMENTPROCEDURE

NOTE:

This work shouldbe finishedwithin30 minutes sothat the RAM data wouldnot be lost as

running out of current fromthe Back-up CapacitorC7752.

1. Remove the Top Panel and Mechanism unitwith MainC.B.Aby

referring to the Disassembling Procedure.

2. Unsolder the Lithium Battery:B7751 and then replace itwith a

new one (See Fig. B1).

Fig. B1

NOTE:

The lithiumbatteryis a critical component (ManufacturedbyPanasonic.)

It must neverbe subjectedtoexcessive heat ordischarge.

It must therefore onlybe fittedinequipment designedspecificallyforits use.

Replacement batteries must be of the same type and manufacture.

Theymust be fittedinthe same mannerand location as the original battery, withthe correct

polaritycontacts observed.

Donot attempt tore-charge the batteryorre-use it foranyotherpurpose.

It shouldbe disposedof inwaste products destinedforburial ratherthanincineration.

2.3. SERVICECAUTION-2

2.3.1. CAUTION FOR AUTO TUNING

PROCEDURE

AutoTuning will start bythe following procedure.

1. Connect the DIN-RFCable.

2. Connect the AC Mains Lead.

3. Turn on the VCR.

Auto Tuning will start.

Auto Tuning search for TV stations from VHSminimum to UHF

maximum and memorizes everytuned program position. Other

program positions are skipped.

Auto Tuning takes five or more minutes to complete its search.

Donot touch the VCR during Auto Tuning.

Auto Tuning will stop halfway, ifthe VCR isoperated or the aerial

lead and/or the mains lead are disconnected.

Incase the VCR stopped during Auto Tuning, the VCR has to be

reset and restarted. See the following item 2.

NOTE:

1. Ifthe VCR isturned on with the antenna not connected, all

channelsare skipped. Therefore, firmlyconnect the antenna and

then turn the VCR off and on againto execute Auto tuning.

2. When Auto Tuning iscanceled halfway, Auto Tuning isnot

execute even ifthe VCR isturned off and then turned on again,

Inthiscase, Auto Tuning has to be restarted bythe following

procedures.

A. Press EJECTand remove the Videocassette.

B. Keep UPand DOWNon the VCR pressed simultaneouslyfor 3

seconds or more during the VCR on.

The channel displayed on the VCR displaydisappears for

moment then changes to 2.

C. Turn off the VCR and then turn iton. Auto Tuning commences.

3. Ifyou turn the VCR off during Auto Tuning, Auto Tuning will stop

halfway.

The VCR shouldbe reset and restarted bythe item 2inorder to

execute Auto Tuning.

4. Ifthe VCR starts playback during Auto Tuning, Auto Tuning will

stop halfway.

The VCR shouldbe reset and restarted bythe item 2inorder to

execute Auto Tuning.

5. To cancel Auto Tuning Mid-operation, press POWERDuring Auto

Tuning (The VCR isturned off).

6. When the VCR ismoved to the other area or country, TV

broadcasts shouldbe stored again.

2.3.2. CHECKING OFMAIN C.B.A.

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

the MAIN C.B.A. overas shownin Fig. S1.

Fig. S1

2.3.3. REMOVALOFCASSETTE TAPE

Whenthe cassette tape couldnot be uninstalledfromanelectrical malfunction, There are 2

ways toremove a cassette tape.

1. Removal bycompulsoryunloading.

A. Press FF and EJECTbutton simultaneouslyfor more than 3

seconds and set the Service Mode to 7.

B. Press STOPbutton inorder to unload the mechanism. (Pay

attention to tape slack)

Service Mode Indication:

7** ** (STOP) 70L ** (EJECT)

2. Removal bymanual operation byrotating the Loading Motor with

the batteries.

A. Disconnect the AC plug, and remove the Top Panel and the

Front Panel byreferring to the DisassemblyProcedures.

B. Connect three batteries (1.5V spec.)to the Loading Motor in

series for supplying 4.5V to rotate the Loading Motor as shown

in Fig. S2.Fig. S2

C. Stop unloading just before unloading wouldbe completed as

shownin Fig. S3.Fig. S3

D. Then the tape becomes slack as shownin Fig. S4.

Fig. S4

E. Rotate the S-Reel byasmall minus screwdriver (Fig. S5)to

remove the slack tape as shownin Fig. S6.

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