Panasonic NV-FJ620AM User manual

ORDERNO. VRD0107029C8
Video Cassette Recorder
NV-FJ620AM / NV-FJ620AMC / NV-FJ620EU / NV-FJ620AU /
NV-FJ620BD / NV-FJ620BDX / NV-FJ625AM / NV-FJ625AMM
Z-MECHANISM
SPECIFICATIONS
2001 Matsushita ElectricIndustrial Co., Ltd. All rights reserved.
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.
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Notes:
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-FJ620AM/AMC (A)
NV-FJ620EU (B)
NV-FJ620AU (C)
NV-FJ620BD/BDX (D)
NV-FJ625AM/AMM (E)
1.1. IDENTIFICATIONOFNV-FJ620AM/AMC& NV-FJ625AM/AMM
1. ForNV-FJ620AM/AMC :
Since inbothNV-FJ620AM and NV-FJ620AMC are indicatedas “NV-FJ620AM” on the Name
Plate, distinguishthe model numberwhethercountryof originis mentionedon the Name Plate
ornot.
[ *WithCountryof origin: NV-FJ620AMC ] [*Without Countryof origin: NV-FJ620AM ]
2. ForNV-FJ625AM/AMM :
Since inbothNV-FJ625AM and NV-FJ625AMM are indicatedas “NV-FJ625AM” on the Name
Plate, distinguishthe model numberwhethercountryof originis mentionedon the Name Plate
ornot.
[ *WithCountryof origin: NV-FJ625AMM ] [*Without Countryof origin: NV-FJ625AM ]
-When servicing, confirm the Name Plate to distinguish the model
number although Electrical Parts of both modelsare completely
same.
2. GENERAL DESCRIPTIONS
2.1. SERVICECAUTION-1
Whenthe MicroprocessorIC6001 and/orBack-up batteryB6001 are replaced, readthe following
procedure carefullyand proceedit.
[REASONS] / There is a RAM inthe IC6001, whichis backing up:
1. Programme Navigation Data
2. TV Tuning Data
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3. PG Shifter Adjustment Data
4. Option Setting Data
WhenIC6001 and/orB6001 are replaced, all above listeddata become not available.
These data is backing up byusing the powersource of:
*AC Connected
:AC Power source
*AC Disconnected
:Back-up Battery(B6001)
2.1.1. REPLACING PROCEDURE [IC6001/B6001]
[1. PREPARATION]
Before replacing IC6001 and/orB6001:
-Take anote that store TV broadcast channels. / (Because, its user
maystore TV broadcasts bymanuallyother than “Auto Tuning”
operation and itisalso erased.)
-Back-up the Programme Navigation data. / (The Programme
Navigation data istransferablebyusing “Programme Navigation
Data Back-up Tool (VFK1493P)” (You maytake make itbyreferring
the following schematicdiagram.)
-NECESSARY STATUS OFTHE VCR UNIT-
1. The IC6001 shouldbe comunicablewith the Programme Navi.
Back-up Tool. (VFK1493P)
2. The “NAVI”data has to be availableinIC6001.
NOTE:
During servicing, do not make short IC6001-pin37 (5V) with other
line/Components, otherwise, IC6001 maybe broken.
[2. HOW TO CONFIRM THE “NAVI.” DATA WITHOUTINSERTING A TAPE INTO A VCR?]
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”date list
isdisplayed on the Monitor. / (Press the “MENU”button on
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theRemote Controller for cancellation.)
[3. REPLACING PROCEDURE IN STEPS]
[STEP 1. PREPARATION]
1. Remove the C.B.A. with Mechanism unitbyreferring the
Disassemblyprocedure.
2. Connect the VFK1493P byreferring the following figure.
[STEP 2. “NAVI” DATA BACK-UP]
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PROCEDURE F.I.P. DISPLAY
Turnon the Service Mode.
1. Press FF and EJECTkeys
/ simultaneouslyformore
than/ 3 seconds.
Turnon the Service Mode 2.
2. Press FF and EJECTkeys
intwice.
Turnon the Set-up mode.
3. Press the EJECTkeyfor
more than3 seconds.
Turnon the mode 6.
4. Press the CH UP keyin3
times.
Activate the Back-up.
5. Press the FF keyformore
than3 seconds.
(OK) “UP” is displayedwhen
the Back-up process has
beendone successfully.
(NG) “31” is displayedwhenthe
Back-up process has not
beendone successfully.
(“31” is displayedmainlywhenthe
connection failure and ROM failure of
VFK1493P occurred. Confirm themand try
again.)
[STEP 3. REPLACE THE IC6001 AND/OR B6001]
1. Disconnect the AC plug and replace the IC6001 and/or B6001. (Do
not make ashort circuitbetween IC6001-pin37 and other pins/
components.)
CAUTION:
*When replacing the B6001, be sure to read/follow the “HOWTO
REPLACETHELITHIUMBATTERY” section.
[STEP 4. RESETTHE IC6001 ATONCE]
1. Connect the AC plug.
2. Connect ajumper wire between TL7510 and TW6090 (GND)for a
second to reset the Microprocessor IC6001.
Note:
Since the resistance at pin1as well as pin2of IC6001 decides the
model distinction data, no need to set up the Model code, which is
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necessaryinprevious model.
[STEP 5. LINE-IN SETTING & ACTIVATE PLUG-IN A.T.P.]
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.
3. Disconnect the AC plug for few seconds and connect itagainto
carried out the “Plug inAuto Tuner Preset”.
4. Since other than the channelswhich can be stored “Auto Tuning”
operation are still not available, preset manuallybyconsulting the
note of its availableTV channelsof which you took before.
2. Change the OSD setting tothe Factoryshipping condition if necessary, byreferning the
follwing charts.
[STEP 6. NAVI. DATA WRITING/SAVING]
1. Connect the Prog. Navi. Data Back-up Tool (VFK1493P)
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PROCEDURE F.I.P. DISPLAY
Turnon the Service Mode.
1. Press FF and EJECTkeys
/ simultaneouslyformore
than/ 3 seconds.
Turnon the Service Mode 2.
2. Press FF and EJECTkeys
intwice.
Turnon the Back-up mode.
3. Press the EJECTkeyin
more than3 seconds.
Turnon the Back-up mode 6.
4. Press the CH UP keyfor3
times.
Activate the NAVI. Data Writing.
5. Press the REW keyin
more than3 seconds.
(OK) “dn” is displayedwhen
the Back-up process has
beendone successfully.
(NG) “32” is displayedwhenthe
Back-up process has not
beendone successfully.
(“32” is displayedmainlywhenthe
connection failure and ROM failure of
VFK1493P occured. Confirm themand try
again.)
Reset the Service Mode.
Normal Indication
6. Press FF and EJECTkeys
/ simultaneouslyin6 times.
Disconnect the AC plug, thendisconnect the
VKF1493P fromthe unit.
NOTE: Perform the PG SHIFTER ADJUSTMENT.
2.2. CAUTIONFORAC MAINSLEAD (NV-FJ620BD)
2.3. HOWTO REPLACETHELITHIUMBATTERY
2.3.1. GERNERALDESCRIPTION
There is a RAM inthe IC6001, whichis backing up the following data byusing the powersource
of B6001 (Back-up Battery).
1. Programme Navigation Data
2. TV Tuning Data
3. PG Shifter Adjustment Data
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4. Option Setting Data
2.3.2. REPLACEMENTPROCEDURE
1. Remove the Top Panel and Mechanism unitwith MainC.B.A. by
referring the Disassembling Procedure.
2. Unsolder the Lithium Battery:B6001 “CR2354-1GUF” and then
replace itinto new one. (See Fig.B1)
Fig.B1
NOTE:
The lithium batteryisacritical component (Type No.:CR2354-1GUF
Manufactured byPanasonic.)
Itmust nerver be subjected to excessive heat or discharge.
Itmust therefore onlybe fitted inequipment designed specifically
for its use.
Replacement batteries must be of the same type and manufacture.
Theymust be fitted inthe same manner and location as the original
battey, with the correct polaritycontacts observed.
Donot attempt to re-charge the oldbatteryor re-use itfor anyother
purpose.
Itshouldbe disposeed of inwaste products destined for burial
rather than incineration.
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2.4. SERVICECAUTION-2
2.4.1. 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 searches
for TV stations from VHFminimum to UHFmaximum 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 have 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
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then turn the VCR off and on againto execute Auto tuning.
2. When Auto Tuning iscanceled halfway, Auto Tuning isnot
executed even ifthe VCR isturned off and then turned on again. /
Inthiscase, Auto Tuning have to be restarted bythe following
procedure.
A. Press EJECTand remove the Video cassette.
B. Keep UPand DOWNon the VCR pressed simultaneouslyfor 3
seconds or more during the VCR on. / The channel displayed
on the VCR displaydisappears for amoment 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.
2.4.2. CHECKING OFMAIN C.B.A.
Whenservicing the MAIN C.B.A., take out the MAIN C.B.A. and mechanismfromthe frame and
turnover.
Fig. S3
2.4.3. REMOVALOFCASSETTE TAPE
There are 2 ways toremove a cassette tape.
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