Panasonic NV-DV2000 User manual

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ORDER NO. VRD0006016C2
Digital Video Cassette Recorder
NV-DV2000EC
DJ-MECHANISM
SPECIFICATIONS
© 2000 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of
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:
Adjustment procedures, Disassembly Procedures and Assembly Procedures for Mechanism Chassis are separated
volume from this Service Manual.
Please refer to the Service Manual for DJ-Mechanism Chassis. (Order No. VMD9706005A8)
1.1. CMPONENT REFERRENCE TABLE
If you have the reference number of each component and have no idea where it is, use the following table to
find out the C.B.A. and/or diagram.
Reference-Series- Located C.B.A. Name of Diagram Remarks
1000 Series VEP06D55A RF I/F SECTION IN MAIN
1100 Series
1200 Series
VEP06D55A POWER SECTION IN MAIN
1100 Series
1200 Series
VEP01868A SUB POWER<POWER SECTION IN MAIN>
1500 Series VEP06D55A RF I/F SECTION IN MAIN
1500 Series VEP000D5B MOTOR DRIVE<DIGITAL (SYSTEM CONTROL&
SERVO SECTION)>
2000 Series VEP03F39A DIGITAL (LSI MICON SECTION)
2500 Series VEP03F39A DIGITAL (SYSTEM CONTROL& SERVO SECTION)
3000 Series VEP03F39A DIGITAL (VIDEO 1 SECTION)
3100 Series VEP03F39A DIGITAL (VIDEO 1 SECTION)
3200 Series VEP03F39A DIGITAL (VIDEO 2 SECTION)
3600 Series VEP06D55A VIDEO SECTION IN MAIN
3700 Series VEP03F39A DIGITAL (DIGITAL I/F SECTION)
3900 Series VEP03F40A INPUT/OUTPUT
4000 Series VEP06D55A RF I/F SECTION IN MAIN
4200 Series VEP03F39A DIGITAL (VIDEO 1 SECTION)
4300 Series VEP06D55A AUDIO SECTION IN MAIN
4500 Series VEP03F39A DIGITAL (VIDEO 1 SECTION)
4700 Series VEP06D55A VIDEO SECTION IN MAIN
4800 Series VEP07A24A TIMER
4900 Series VEP06D55A RF I/F SECTION IN MAIN
4900 Series VEP03F40A INPUT/OUTPUT
4950 Series VEP06D55A RF I/F SECTION IN MAIN
5000 Series VEP05352A HEAD/ REC AMP

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6000 Series
6100 Series
VEP03F39A DIGITAL (SYSTEM CONTROL& SERVO SECTION)
6200 Series VEP06D55A RF I/F SECTION IN MAIN
7500 Series VEP07A24A TIMER
7600 Series VEP06D55A RF I/F SECTION IN MAIN
7650 Series VEP07A04A DV JACK<RF I/F SECTION IN MAIN>
ґ---- VEP000D6A SW<DIGITAL (SYSTEM CONTROL& SERVO
SECTION)>
30000 Series VEP03F41A ANALOG Y/C
2. GENERAL DESCRIPTIONS
2.1. SERVICE POSITION
2.1.1. Extension Cables
Use the following Extension Cables when checking individual circuit boards.
No. Part No. Part Name Connection Q‘ty Remarks
1VFK1507P ANALOG Y/C Connection
C.B.A.
Main C.B.A.→Analog Y/C
C.B.A.
1
2VFK1509 36P Flat Cable Main FP3401→Digital FP3201 1
3VFK1508 32P Flat Cable Main FP3402→Digital FP3202 1
4VFK1509 36P Flat Cable Main FP6201→Digital FP6002 1
5VFK1174 30P Flat Cable Digital FP6003→Mech. Flex.
(VES0914)
1
6VFK1284 24P Flat Cable Digital FP3203→Mech. (Head
Amp)
1
7VFK1292 9P Flat Cable Digital P2501→Mech.
(Cylinder)
1
8VFK1282 22P Flat Cable Digital P2502→Mech.
(Capstan)
1
9VFK1446 32P Flat Cable Main P7901→Timer P7502 1
10 VFK1445 26P Flat Cable Main P7902→Timer P7501 1
11 VFK1527 3P Extension Cable Digital P6001→Switch P1502 1
12 VFK1529 2P Extension Cable Digital P6002→Motor P1501 1
13 VFK1530 30P Flat Cable Mech. Flex. (VES0914) 1for Emagency Tape
Ejection
Fig. 2-1 Extension Cable
2.1.2. Service Position
2.1.2.1. Service Position for Analog Y/C C.B.A.
Fig. 2-2 Service Position for Analog Y/C C.B.A.

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2.1.2.2. Service Position for Digital C.B.A.
When checking the Digital C.B.A., remove the Mechanism unit with Digital C.B.A. from the frame. Then,
connect the extension cables as shown inFig. 2-3 Service Position for Digital C.B.A. and turn overthe
Mechanism unit.
Fig. 2-3 Service Position for Digital C.B.A.
2.1.2.3. Service Position for Main C.B.A.
When checking the Main C.B.A., take out the Mechanism unit with Digital C.B.A. and Main C.B.A. from the
frame. Then, connect extension cables as shown inFig. 2-4 Service Position for Main C.B.A. and turnover the
Main C.B.A..
Fig. 2-4 Service Position for Main C.B.A.

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2.2. SERVICE MODE
2.2.1. Setting the Service Mode
This VTR is equipped with the Service Mode, which is effective for servicing.To turn on the Service Mode,
press FF and EJECT button simultaneously in 3 seconds.(Indication of Front Panel Display is changed as
shown inFig.2-5 Service Mode (Sample).)
Fig. 2-5 Service Mode (Sample)
2.2.2. How to use the Service Mode
There are 8 kinds of Service Mode and the subject of each Service Mode is listed below.
Mode 0: Mevhanism process/position
Mode 1: Tape Beg/End Sensor& Receiving key command
Mode 2: Mechanism position& slot mode
Mode 3: Self-Diagnosed record 1 (Latest)
Mode 4: Self-Diagnosed record 2 (2nd Latest)
Mode 5: Self-Diagnosed record 3 (3rd Latest)
Mode 6: Receiving command at LSI
Mode 7: Mechanism Manual operation
The following chart shows the meaning of the each code.
To read/decode the Service Mode, use following chart.
(1)
No.
Group (2) Data 1 (3) Data 2 Remarks
0Mechanism position. VCR (Deck) Mode [Real-time] Mechanism driving position
process code. [Real-time]
1Tape Beg/End sensor
checkup& Receiving
key Command checkup
Tape Beginning/End Detection
data.
[Real-time]
Receiving Key command from
both Remote controller& VCR.
[Real-time]
2Mechanism position&
slot mode checkup
Mechanism position
[Real-time]
Slot mode [Real-time] At this mode, wh
e
the Eject key is
pressed mode th
a
3 seconds, it will
the Electrical
Adjustment Mod
e
3Self-Diagnosed record 1
(Latest)
Refer to the Fig. 2-8 These two digits (Data2) are
meaningless although it might
be changed.
Refer to the
SELFDIAGNOSI
S
MODE.

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(1)
No.
Group (2) Data 1 (3) Data 2 Remarks
4Self-Diagnosed record 2
(2nd Latest)
Refer to the Fig. 2-8 These two digits (Data2) are
meaningless although it might
be changed.
Refer to the
SELFDIAGNOSI
S
MODE.
5Self-Diagnosed record 3
(3rd Latest)
Refer to the Fig. 2-8 These two digits (Data2) are
meaningless although it might
be changed.
Refer to the
SELFDIAGNOSI
S
MODE.
(To be continued.)
(1)
No.
Group (2) Data 1 (3) Data 2 Remarks
6LSI receiving command
checkup
Deck Mode LSI Mode [Real-time]
7Mechanism Manual
operation
Mechanism Position
(Real-time) (Same data with
Service Mode 2)
Slot mode (Real-time (Same
data with Service Mode 2)
Fig. 2-6 Service Mode Decoding Table
2.2.3. Self- Diagnosis Mode
This VTR has a Self-Diagnosis function, which detects troubles when undesirable condition occurred.When
one of the following listed trouble is detected, Power is automatically turns off and its error is saved as the
"Error-Code" in Timer microprocessor (IC7501).(Threeerror codes can be memorized in historical order and
are backed up by the Lithium Battery;B7901.)
NOTE:
It is not automatically displayed on the Front Panel Display although trouble has been detected. (It means that user can
not be recognized what is happened.)
2.2.3.1. How To Confirm The "Error Code".
The Error Code can be confirmed on the Front Panel Display by placing the unit to the Service Mode 3, 4
and/or 5.
1. Turn on the Service Mode by pressing "FF" and "EJECT" buttons simultaneously in more than 3 seconds.
2. Select the Service Mode 3, 4 or 5 by pressing the "FF" and "EJECT" buttons simultaneously in certain time.The error
codes can be displayed Service Mode 3, 4 and 5 in historical order.
Service Mode 3 displays the last Error Code on the FIP.
Service Mode 4 displays the Error Code on the FIP, which is just before the error code displayed in Service Mode 3.
Service Mode 5 displays the Error Code on the FIP, which is just before the error code displayed in Service Mode 4.
NOTE:
Although same errors are occurred in several times, only first error code is memorized.(When the error is occurred, it is
compared with the memorized data. If the just occurred error is same as the memorized one, it is skipped to be
memorizing.)
Fig. 2-7 Error Code is displayed in F.I.P. (Example)

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Error
Code
Condition Description Remedy/Check
01 Cylinder Lock The cylinder does not rotate or Cylinder lock has
been detected during normal rotation.
Check the Cylinder
Cylinder Drive IC
02 Capstan Lock FG signal does not existed in the Cassette down
position (Eject-Rev.).
Check the Capstan
Capstan Drive IC
03 Loading Lock Mechanism Lock has been detected during
loading operation.
Loading Post
04 Unloading Lock Mechanism Lock has been detected during
unloading operation.
Loading Post
05 Reel FG NG Abnormal Reel FG has been detected during
loading/unloading operation.
Reel FG line
07 Slot Motor Lock Slot motor lock has been detected during slot
in/out operation.
Slot Motor
09 Communication Error
(Sys-Timer)
"SYSCON-TIMER" Communication error has
been detected.
Communication-line
11 Head Clogging Head clogging has been detected. Head cleaning
14 Mode error Cassette down position has been detected during
unloading operation.
Loading Motor Drive
Mode Switch
17 S-Reel Lock S-Reel Lock has been detected during normal
rotation.
S-Reel
18 T-Reel Lock T-Reel Lock has been detected during normal
rotation.
T-Reel
19 Fan Motor Lock Fan motor does not rotate after turning power ON. Fan motor
51 S-Photo Tr Adj. Error Adjustment Error.
(Adjustment error of S-Photo Transistor sensitivity
Adjustment.)
Re-adjustment is required.
(Tape End Sensor
Adjustment.)
(To be continued.)
Error
Code
Condition Description Remedy/Check
52 T-Photo Tr Adj. Error Adjustment Error.
(Adjustment error of T-Photo Transistor sensitivity
Adjustment.)
Re-adjustment is required.
(Tape Beg. Sensor
Adjustment.)
53 S/T-Photo Tr Adj. Error Adjustment Error.
(Adjustment error of S/T-Photo Transistor
sensitivity Adjustment.)
Re-adjustment is required.
(Tape End/Beg. Sensor
Adjustment.)
Fig. 2-8 Error Code (Displayed in Service Mode 3, 4 and 5)
2.2.4. Emergency Tape Ejection
If the electric circuit defects and no Tape ejection can be made in regular way, try following methods.There are
two methods to achieve the emergency tape ejection.

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1. Utilizing the Service Mode 7.
2. Utilizing the Extra DC power (batteries).
2.2.4.1. Utilizing the Service Mode 7
Procedures:
1. Remove the Top panel.
[Refer to the "Disassembly Procedures" section.]
2. Turn on the Service mode and select mode 7.
[Refer to the "Service Mode" section.]
In this mode, when the "STOP" button is pressed, loading motor rotates unloading direction.
Also when the "PLAY" button is pressed, loading motor rotates loading direction.
This action is effective only while either "STOP" or "PLAY" button is being pressed.
NOTE:
While loading/unloading operation, pay attention to the tape slack.
3. Press the "STOP" button until "7 02 00"(Cassette Down position) is displayed on the F.I.P. display.
Fig. 2-9
4. Be sure to confirm no tape slack and take up the tape slack by rotating Capstan with hand if necessarily.
5. Press the "STOP" button until "7 02 03"(Cassette Eject position) is displayed on the F.I.P. display.
Fig. 2-10
6. Take out the tape carefully.
2.2.4.2. Utilizing the Extra DC power (batteries)
Procedures:
1. Remove the Mechanism unit from the chassis.
[Refer to the "Disassembly Procedures" section.]
2. Remove the Digital C.B.A. from the Mechanism unit.
3. Remove the shield case of capstan unit.
4. Connect the Flexible card (VFK1530).
5. Supply the+B (4.5V) to VFK1530 to activate the unloading operation.
Loading.............Pin25,26 (+4.5V) Pin27,28 (GND)
Unloading.........Pin25,26 (GND) Pin27,28 (+4.5V)
In this case, stop supplying the power at just before the mechanism to be the unloading complete position (Tension post
is not retracted fully), otherwise, the tape slack can not be taken although capstan is rotated with hand.
6. Confirm that no tape slack and supply the power again to make full unloading position (Tension post is retracted fully).
Take up the tape slack by rotating Capstan with hand if necessarily.
7. Rotate the worm wheel with hand in counterclockwise, then take out the tape carefully.
Fig. 2-11

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Fig. 2-12
Fig. 2-13
2.3. OPERATING GUIDE
2.4. CAUTION FOR AC MAINS LEAD (FOR UK)
2.5. HOW TO REPLACE THE LITHIUM BATTERY

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2.5.1. Backup Battery B7901
This VTR equipped with the Backup Battery (B7901) to backup the following memorized data in the Timer
microprocessor (IC7501).
1. Setting condition of "VCR Functions"
OSD(AUTO/ON/OFF)
VCR display(ON/OFF/DIMMED)
Colour Mode(COLOUR/ B/W)
Comb filter (ON/OFF)
E-TBC (ON/OFF)
REC-DNR (LEVEL1/LEVEL2)
PB-DNR (LEVEL1/LEVEL2)
Remote (VCR1/VCR2/VCR3)
2. Setting condition of "Edit Functions"
Search with Sound (OFF/EDIT ONLY/ALWAYS ON)
Audio Mode(12bit/16bit)
One-Touch-Edit(OFF/ON)
Still Album(3-20seconds adjustable)
3. Clock& Date data
4. Self-Diagnosed Result Record (3 records)
2.5.2. Replacement Procedure
1. Remove the Top Panel and Mechanism unit with DIGITAL C.B.A.(VEP03F39A).(Refer to Disassembly Procedures).
2. Unsolder the Lithium Battery;B7901"CR2354-1GUF" and then replace it into new one.(SeeFig. B1)
Fig. B1
CAUTION:
The lithium battery is a critical component (Type No.: CR2354-1GUF Manufactured by Panasonic.) / It must never be
subjected to excessive heat or discharge. / It must therefore only be fitted in equipment designed specifically for its use. /
Replacementbatteries must be of the same type and manufacture. / They must be fitted in the same manner and location
as the original battery, with the correct polarity contacts observed. / Do not attempt to re-charge the old battery or re-use it
for any otherpurpose. / It should be disposed of in waste products destined for burial rather than incineration.

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3. ADJUSTMENT PROCEDURES
3.1. DISASSEMBLY/ ASSEMBLY PROCEDURES FOR CABINET PARTS,
C.B.A. AND MECHANISM UNIT
3.1.1. Disassemble Flow Chart for cabinet parts, C.B.A. and Mechanism Unit.
This flow chart indicates the disassembly steps the cabinet parts, C.B.A. and Mechanism Unit in order to
access to items to be serviced. When reinstalling, perform the steps in reverse order.
Fig. 3-1 Flow Chart
Fig. 3-2

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3.1.2. Assemble/ Disassemble Procedures (for cabinet parts, C.B.A. and Mechanism
Unit)
No. ITEM/PART FIGURE REMARKS
1Top Panel Fig. D1 2-Screws (A)
3-Screws (B)
2Front Panel Fig. D2 5-Tabs (a)
3Analog Y/C
C.B.A.
Fig. D3 Note1:
2-Locking Tabs (b)
4Timer C.B.A Fig. D3 6-Screws (F) / 5-Tabs
(d) / 2-Flexible Cable (e)
/ (P7901, P7902)
5DV Jack
C.B.A.
Fig. D4 1-Connector (f) (P7602)
1-Screw (G)
6Mechanism
Unit
Fig. D3 3-Flexible Cable (g)
(FP3401, FP3402,
FP6201)
1-Screw (C)
2-Screws (D)
1-Connector (h) (P7601)
7Digital C.B.A. Fig. D5
Fig. D6
3-Flexible Cable (i)
(FP3203, P2501, P2502)
2-Screws (H)
2-Screws (I)
1-Flexible Cable (j)
(FP6003)
2-Connectors (k)
(P6001, P6002)

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No. ITEM/PART FIGURE REMARKS
8Head Rec
Amp C.B.A.
Fig. D7 1-Screw (J)
2-Screws (K)
1-Flexible Cable (l)
(FP5001)
9Rear Panel
and Fan Motor
Fig. D3
Fig. D8
1-Connector (m)
(P1001)
1-Screw (L)
7-Screws (M)
2-Tabs (n)
2-Tabs (p)
10 Main C.B.A. Fig. D3 3-Screws (E)
1-Tabs (o)
Fig. D1
Fig. D2
Fig. D3

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NOTE 1
NOTE 2

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Fig. D4
Fig. D5
Fig. D6

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Fig. D7
Fig. D8

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3.1.3. Assemble/ Disassemble Procedures of Slot-in Unit
3.1.3.1. Disassemble Section
Before proceeding the disassembling of the Slot-in unit, remove the mechanism unit from the chassis and
remove the DIGITAL C.B.A. from the mechanism by referring the disassemble procedure describing in the
previous section.
No. ITEM/PART FIGURE REMARKS
11 SLOT-IN
UNIT/MOTOR
ANGLE/WORM
WHEEL
Fig.
D9-1
Fig.
D9-2
2-Screws (N-1)
4-Screws (N-2)
12 INTERMEDIATE
GEAR
Fig. D10 1-Cut washer (q)
13 SYNCHRO
-GEAR
Fig. D11 1-Hook (r)
14 OUTER SIDE
PLATE-T
Fig. D12 4-Screws (O)
15 SUB
RACK/T-MAIN
RACK
Fig. D13
16 INTERMEDIATE
GEAR
Fig. D14 1-Cut washer (s)
17 GUARD
BLOCK /
SPINDLE
SHAFT (I)
Fig. D15 Slide the guard block to
arrow direction.

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No. ITEM/PART FIGURE REMARKS
18 OUTER SIDE
PLATE-S
Fig. D16 2-Screws (P)
19 SUB
RACK/S-MAIN
RACK
Fig. D17
20 TOP PLATE Fig. D18 2-Screws (Q)
21 SIDE PLATE
S& T/GUARD
PANEL /
CASSETTE
HOLDER
UNIT/FRONT
GUIDE/BLIND
LEVER
Fig. D19
Fig. D9-1
Fig. D9-2

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Fig. D10
Fig. D11

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Fig. D12
Fig. D13