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SERVICE MANUAL
DV VIDEO CASSETTE RECORDER

BR-DV600U/BR-DV600E

100% recycled paper

COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.

No. 9377 March 2000

TABLE OF CONTENTS
Section Title Page Section Title Page

Important Safety Precautions INSTRUCTIONS SECTION 1 SERVICE CAUTIONS AND DISASSEMBLY
1.1 LAYOUTS OF MAJOR BOARDS .............................................. 1-1 1.2 REMOVING THE MAJOR PARTS ............................................ 1-2 1.2.1 Disassembly Flowchart ...................................................... 1-2 1.2.2 Replacing the Fuses ........................................................... 1-2 1.2.3 Removing the Top Cover .................................................... 1-2 1.2.4 Removing the Front Panel assembly ................................. 1-2 1.2.5 Removing the Bottom Cover ............................................. 1-2 1.2.6 Removing the DVC Unit ..................................................... 1-3 1.3 DIAGNOSIS OF MAJOR BOARDS ........................................... 1-3 1.3.1 Adjustment & Diagnosis of the DV MAIN Board and Mechanism .... 1-3 1.3.2 Diagnosing the Video I/O Board ......................................... 1-4 1.3.3 Diagnosing the AUD S/S Board .......................................... 1-4 1.3.4 Diagnosing the SW REG Board .......................................... 1-4 1.3.5 Diagnosing the FRONT Board ............................................ 1-5 1.3.6 Diagnosing the FRONT Sub Board ..................................... 1-5 1.3.7 Diagnosing the REAR 1 Board ........................................... 1-5 1.4 DISASSEMBLY OF THE DVC UNIT .......................................... 1-6 1.4.1 Disassembling the Front Part of the DVC Unit .................. 1-6 1.4.2 Disassembling the Rear Part of the DVC Unit ................... 1-6 1.4.3 Removing the Cassette Housing Assembly ...................... 1-7 1.4.4 Removing the Mechanism Assembly ................................ 1-7 1.5 TAPE EJECTION IN CASE OF EMERGENCY ........................... 1-8 1.5.1 Tape Ejection Using Forced Eject Mode (Short-circuiting of Internal TP) ........................................... 1-8 1.5.2 Tape Ejection without Using the Forced Eject Mode ......... 1-8 1.5.3 Manual Tape Ejection ......................................................... 1-9 1.6 MENU SWITCHES ................................................................. 1-10 1.6.1 Displaying the Menu Switches ........................................ 1-10 1.6.2 Configuration of Service Menu (Monitor Out Display) ..... 1-10 1.6.3 Contents of the User and Service Menu ......................... 1-11 1.6.4 HOUR METER ................................................................. 1-13 1.6.5 ROM VERSION ................................................................ 1-13 1.6.6 ERROR HISTORY ............................................................. 1-14 1.6.7 MECHANISM SW INFO ................................................... 1-14 1.6.8 OTHERS ........................................................................... 1-15 1.7 WARNING CODES ................................................................. 1-16 1.7.1 Warning Errors ................................................................. 1-16 1.7.2 Invalid Errors .................................................................... 1-17 1.8 EEPROMs .............................................................................. 1-18 1.9 CAUTION FOR REPLACING THE DV MAIN BOARD AND AUD S/S BOARD ........................................................... 1-18 1.9.1 DV MAIN Board ............................................................... 1-18 1.9.2 AUD S/S Board ................................................................. 1-18 1.10 BACKUP OF TIME DATA ....................................................... 1-19 1.10.1 Backup Circuit ................................................................. 1-19 1.10.2 Compulsory resetting ..................................................... 1-19 1.11 SET UP SW (U-MODEL ONLY) ............................................. 1-19 1.12 EDITING SYSTEM USING THE BR-DV600 ............................ 1-20 1.12.1 Control with JVC bus ...................................................... 1-20 1.12.2 RS-422A (9P) controller ................................................... 1-21 1.13 ANALYSIS OF BLOCK NOISE (SYMPTOMS: POOR VIDEO, ABSENCE OF AUDIO) ........................................................... 1-22 1.13.1 Analysis Flow Chart ........................................................ 1-22 1.13.2 RF Envelope Check ......................................................... 1-23

2.2.1 Assembly mode ................................................................. 2-2 2.2.2 Mechanism modes ............................................................ 2-3 2.3 MECHANISM TIMING CHART ................................................. 2-4 2.4 MAINTENANCE AND INSPECTION OF MAJOR PARTS .......... 2-5 2.4.1 Layout of Major Parts ......................................................... 2-5 2.4.2 Maintenance and inspection list ........................................ 2-6 2.4.3 Cleaning ............................................................................. 2-7 2.4.4 Oiling and Greasing ............................................................ 2-7 2.5 PERIODICAL MAINTENANCE .................................................. 2-8 2.6 DISASSEMBLY/ASSEMBLY OF MECHANISM ASSEMBLY ..... 2-9 2.6.1 Assembly/Disassembly ...................................................... 2-9 2.6.2 Screws and Washers Used in Mechanism Assembly Disassembly/Assembly ...................................................... 2-9 2.6.3 Mechanism Assembly Disassembly Procedure Table ..... 2-10 2.6.4 Mechanism disassembly/assembly procedure chart ....... 2-11 2.7 REPLACEMENT OF MAJOR PARTS ...................................... 2-12 2.8 CONFIRMATION AND ADJUSTMENT OF MECHANISM PHASES .. 2-27 2.9 MECHANISM DISASSEMBLY/ASSEMBLY SHEET ................ 2-28 2.10 DISASSEMBLY PROCEDURE LIST ....................................... 2-30 2.11 TORQUE ADJUSTMENTS .................................................... 2-31 2.12 COMPATIBILITY ADJUSTMENT ........................................... 2-32 2.12.1 Compatibility Adjustment Flow Chart ............................. 2-32 2.12.2 Before Adjustments ........................................................ 2-33 2.12.3 Adjustment Setup ........................................................... 2-33 2.12.4 Tape Transport Restriction .............................................. 2-34 2.12.5 Compatibility Adjustment ............................................... 2-35

SECTION 3 ELECTRICAL ADJUSTMENTS
3.1 PRECAUTIONS ......................................................................... 3-1 3.1.1 Required tools and measuring instruments for adjustments ...... 3-1 3.1.2 Alignment tapes ................................................................. 3-1 3.1.3 Standard setup for adjustment .......................................... 3-1 3.1.4 Signals required for adjusting video system ...................... 3-2 3.1.5 Adjustment Using Different Signal Types .......................... 3-3 3.2 ADJUSTMENTS ON THE VIDEO I/O BOARD .......................... 3-5 3.2.1 Audio Adjustments ............................................................ 3-5 3.2.2 Video Adjustments ............................................................. 3-5 3.3 ADJUSTMENTS ON THE AUD S/S BOARD ........................... 3-10 3.4 DV ADJUSTMENTS (USING ADJUSTMENT SOFTWARE) .... 3-11 3.4.1 Precautions ...................................................................... 3-11 3.4.2 Equipment Required for Adjustments ............................. 3-11 3.4.3 Setup for PC Adjustment ................................................. 3-11 3.4.4 Installing the Adjustment Software ................................. 3-12 3.4.5 Operating the Adjustment Software ................................ 3-12 3.4.6 Common Operations for Adjustments ............................. 3-13 3.4.7 Servo Circuit Adjustment ................................................. 3-14 3.4.8 RF Circuit Adjustments .................................................... 3-15 3.4.9 Video Circuit Adjustments ................................................ 3-17 3.4.10 Audio Circuit Adjustments .............................................. 3-22 3.4.11 Error Rate Monitoring ..................................................... 3-23 3.4.12 ROM Tools ...................................................................... 3-23 3.4.13 IEEE1394 ID Setting ....................................................... 3-24 3.4.14 Active Head Cleaner Adjustment Mode ......................... 3-24 3.4.15 The limitations when the adiustment softwave is run ............ 3-24

SECTION 4 CHARTS AND DIAGRAMS
4.1 INDEX TO PAGES OF MAIN BOARDS AND CIRCUIT BOARD LOCATION ................................................... 4-3 4.1.1 Circuit board location ......................................................... 4-3 4.2 OVERALL WIRING DIAGRAM ................................................. 4-4 4.3 DCDC CIRCUIT BOARD ........................................................... 4-5 4.4 SW.REG SCHEMATIC DIAGRAM 1 4 ..................................... 4-6 4.5 DCDC SCHEMATIC DIAGRAM 1 2 ......................................... 4-7 4.6 SW.REG CIRCUIT BOARD ....................................................... 4-8

SECTION 2 MECHANICAL ADJUSTMENTS
2.1 BEFORE ADJUSTMENTS ........................................................ 2-1 2.1.1 Precautions ........................................................................ 2-1 2.1.2 Measuring instruments required for adjustments ............. 2-1 2.1.3 Equipment required for adjustments ................................. 2-1 2.2 BASICS OF MECHANISM DISASSAMBLY/ASSEMBLY .......... 2-2

Section

Title

Page

Section 6.13 6.14 6.15 6.16 6.17 6.18

Title

Page

4.7 VIDEO I/O SCHEMATIC DIAGRAM 1 5 (1/4) ........................ 4-10 VIDEO I/O SCHEMATIC DIAGRAM 1 5 (2/4) ........................ 4-11 VIDEO I/O SCHEMATIC DIAGRAM 1 5 (3/4) ........................ 4-12 VIDEO I/O SCHEMATIC DIAGRAM 1 5 (4/4) ........................ 4-13 4.8 VIDEO I/O CIRCUIT BOARD .................................................. 1-14 4.9 AUDIO S/S SCHEMATIC DIAGRAM 1 3 (1/3) ....................... 4-16 AUDIO S/S SCHEMATIC DIAGRAM 1 3 (2/3) ....................... 4-17 AUDIO S/S SCHEMATIC DIAGRAM 1 3 (3/3) ....................... 4-18 4.10 AUDIO S/S CIRCUIT BOARD ................................................ 4-19 4.11 FRONT SCHEMATIC DIAGRAM 0 5 .................................... 4-21 4.12 FRONT SUB SCHEMATIC DIAGRAM 1 6 ........................... 4-22 4.13 FRONT, FRONT SUB CIRCUIT BOARD ................................ 4-23 4.14 REAR1 SCHEMATIC DIAGRAM 0 6 .................................... 4-24 4.15 REAR1 CIRCUIT BOARD ...................................................... 4-25 4.16 REAR2 0 7 (OPTION : SA-K46), REAR3 0 8, REAR4 0 9, REAR5 1 7 SCHEMATIC DIAGRAM .............. 4-26 4.17 REAR2 (OPTION : SA-K46),REAR3, REAR4, REAR5 CIRCUIT BOARD ................................................................... 4-27 4.18 JUNCTION SCHEMATIC DAIGRAM 1 1 .............................. 4-28 4.19 JUNCTION, TR, TRANSMIT CIRCUIT BOARD ...................... 4-29 4.20 DVC UNIT OVERALL WIRING DIAGRAM ............................. 4-30 4.21 DV MAIN SCHEMATIC DIAGRAM 1 0 (1/7) ........................ 4-31 DV MAIN SCHEMATIC DIAGRAM 1 0 (2/7) ........................ 4-32 DV MAIN SCHEMATIC DIAGRAM 1 0 (3/7) ........................ 4-33 DV MAIN SCHEMATIC DIAGRAM 1 0 (4/7) ........................ 4-34 DV MAIN SCHEMATIC DIAGRAM 1 0 (5/7) ........................ 4-35 DV MAIN SCHEMATIC DIAGRAM 1 0 (6/7) ........................ 4-36 DV MAIN SCHEMATIC DIAGRAM 1 0 (7/7) ........................ 4-37 4.22 DV MAIN CIRCUIT BOARD ................................................... 4-38 4.22.1 FOR SERIAL UP TO No.XXXX 0969(U MODEL), XXXX 0984(E MODEL) .................................................... 4-38 4.22.2 FOR SERIAL No.XXXX 0970(U MODEL), XXXX0985(E MODEL) AND AFTER ................................ 4-42 4.23 PR & MDA SCHEMATIC DIAGRAM 0 1 (1/2) ..................... 4-46 PR & MDA SCHEMATIC DIAGRAM 0 1 (2/2) ..................... 4-47 4.24 PR & MDA CIRCUIT BOARD ................................................ 4-48 4.25 ROM 0 3, CONN. 0 4 SCHEMATIC DIAGRAM .................. 4-49 4.26 DCDC SCHEMATIC DIAGRAM 0 2 ..................................... 4-50 4.27 DCDC, ROM, CONN. CIRCUIT BOARD ................................ 4-51 4.28 SYSCON BLOCK DIAGRAM ................................................. 4-52 4.29 FRONT BLOCK DIAGRAM .................................................... 4-53 4.30 VIDEO I/O BLOCK DIAGRAM ............................................... 4-54 4.31 DV BLOCK DIAGRAM (1/2) ................................................... 4-55 DV BLOCK DIAGRAM (2/2) ................................................... 4-56 4.32 AUDIO BLOCK DIAGRAM .................................................... 4-57 4.33 REG. BLOCK DIAGRAM ....................................................... 4-58 4.34 IC BLOCK DIAGRAM ............................................................ 4-59

SW.REG BOARD ASSEMBLY PARTS LIST 1 4 .................. 6-19 VIDEO I/O BOARD ASSEMBLY PARTS LIST 1 5 ................ 6-20 FRONT-SUB BOARD ASSEMBLY PARTS LIST 1 6 ............. 6-30 REAR5 BOARD ASSEMBLY PARTS LIST 1 7 ..................... 6-30 TR BOARD ASSEMBLY PARTS LIST 1 8 ............................ 6-30 TRANSMIT BOARD ASSEMBLY PARTS LIST 1 9 .............. 6-30

SECTION 7 PACKING
7.1 PACKING ASSEMBLY ............................................................... 7-1

SECTION 5 EXPLODED VIEW AND PARTS LIST
5.1 CABINET & CHASSIS ASSEMBLY M 2 .................................... 5-3 5.2 DVC UNIT ASSEMBLY M 3 ...................................................... 5-4 5.3 MECHANISM ASSEMBLY M 4 ................................................ 5-6

SECTION 6 ELECTRICAL PARTS LIST
6.1 P/R & MDA BOARD ASSEMBLY PARTS LIST 0 1 ................. 6-2 6.2 DCDC BOARD ASSEMBLY PARTS LIST 0 2 (DVC unit) ........ 6-3 6.3 ROM BOARD ASSEMBLY PARTS LIST 0 3 ........................... 6-4 6.4 CONN. BOARD ASSEMBLY PARTS LIST 0 4 ........................ 6-4 6.5 FRONT BOARD ASSEMBLY PARTS LIST 0 5 ........................ 6-5 6.6 REAR1 BOARD ASSEMBLY PARTS LIST 0 6 ........................ 6-7 6.7 REAR3 BOARD ASSEMBLY PARTS LIST 0 8 ........................ 6-7 6.8 REAR4 BOARD ASSEMBLY PARTS LIST 0 9 ........................ 6-7 6.9 DV MAIN BOARD ASSEMBLY PARTS LIST 1 0 .................... 6-8 6.10 JUNCTION BOARD ASSEMBLY PARTS LIST 1 1 .............. 6-14 6.11 DCDC BOARD ASSEMBLY PARTS LIST 1 2 (MAIN unit) ... 6-14 6.12 AUDIO S/S BOARD ASSEMBLY PARTS LIST 1 3 .............. 6-15

Important Safety Precautions
Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

Precautions during Servicing
1. Locations requiring special caution are denoted by labels and inscriptions on the cabinet, chassis and certain parts of the product. When performing service, be sure to read and comply with these and other cautionary notices appearing in the operation and service manuals. 2. Parts identified by the symbol and shaded ( ) parts are critical for safety. Replace only with specified part numbers. Note: Parts in this category also include those specified to comply with X-ray emission standards for products using cathode ray tubes and those specified for compliance with various regulations regarding spurious radiation emission. 3. Fuse replacement caution notice. Caution for continued protection against fire hazard. Replace only with same type and rated fuse(s) as specified. 4. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads 5. Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation Tape 3) Spacers 5) Barrier 2) PVC tubing 4) Insulation sheets for transistors 6. When replacing AC primary side components (transformers, power cords, noise blocking capacitors, etc.) wrap ends of wires securely about the terminals before soldering. Fig.4 (3) Align the lengths of the wires to be connected. Insert the wires fully into the connector. Fig.1 7. Observe that wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.) 8. Check that replaced wires do not contact sharp edged or pointed parts. 9. When a power cord has been replaced, check that 10-15 kg of force in any direction will not loosen it. 12. Crimp type wire connector In such cases as when replacing the power transformer in sets where the connections between the power cord and power transformer primary lead wires are performed using crimp type connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely according to the following steps. 1) Connector part number : E03830-001 2) Required tool : Connector crimping tool of the proper type which will not damage insulated parts. 3) Replacement procedure (1) Remove the old connector by cutting the wires at a point close to the connector. Important : Do not reuse a connector (discard it).

cut close to connector

Fig.3 (2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.
15 mm

Metal sleeve

Connector
Fig.5 (4) As shown in Fig.6, use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool.

Power cord
1.2 5 2.0 5.5

Crimping tool

Fig.2 10. Also check areas surrounding repaired locations. 11. Products using cathode ray tubes (CRTs) In regard to such products, the cathode ray tubes themselves, the high voltage circuits, and related circuits are specified for compliance with recognized codes pertaining to X-ray emission. Consequently, when servicing these products, replace the cathode ray tubes and other parts with only the specified parts. Under no circumstances attempt to modify these circuits. Unauthorized modification can increase the high voltage value and cause X-ray emission from the cathode ray tube.

Fig.6 (5) Check the four points noted in Fig.7.
Not easily pulled free Crimped at approx. center of metal sleeve

Conductors extended Wire insulation recessed more than 4 mm

Fig.7

1

Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. 1. Insulation resistance test Confirm the specified insulation resistance or greater between power cord plug prongs and externally exposed parts of the set (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below. 2. Dielectric strength test Confirm specified dielectric strength or greater between power cord plug prongs and exposed accessible parts of the set (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below. 3. Clearance distance When replacing primary circuit components, confirm specified clearance distance (d), (d') between soldered terminals, and between terminals and surrounding metallic parts. See table 1 below. Chassis Fig. 8 4. Leakage current test Confirm specified or lower leakage current between earth ground/power cord plug prongs and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). Measuring Method : (Power ON) Insert load Z between earth ground/power cord plug prongs and externally exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and following table 2.

d d'
Power cord, primary wire

a

b c

Externally exposed accessible part

Z V

A

Fig. 9 5. Grounding (Class 1 model only) Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in, Video out, Audio in, Audio out or Fixing screw etc.). Measuring Method: Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.

AC inlet

Exposed accessible part

Grounding Specifications Region USA & Canada Europe & Australia Grounding Impedance (Z) Z 0.1 ohm Z 0.5 ohm

Earth pin Milli ohm meter
Fig. 10

AC Line Voltage 100 V 100 to 240 V 110 to 130 V 110 to 130 V 200 to 240 V

Region Japan USA & Canada Europe & Australia

Insulation Resistance (R) R 1 M/500 V DC R 10 M/500 V DC

Dielectric Strength AC 1 kV 1 minute AC 1.5 kV 1 miute AC 900 V 1 minute AC 3 kV 1 minute (Class 2) AC 1.5 kV 1 minute (Class 1)

Clearance Distance (d), (d') d, d' 3 mm d, d' 4 mm d, d' 3.2 mm d 4 mm d' 8 mm (Power cord) d' 6 mm (Primary wire)

Table 1 Specifications for each region
AC Line Voltage 100 V 110 to 130 V 110 to 130 V 220 to 240 V Region Japan USA & Canada
0.15 F 1.5 k 2 k 50 k

Load Z
1 k

Leakage Current (i) i 1 mA rms i 0.5 mA rms i 0.7 mA peak i 2 mA dc i 0.7 mA peak i 2 mA dc

a, b, c Exposed accessible parts Exposed accessible parts Antenna earth terminals Other terminals

Europe & Australia

Table 2 Leakage current specifications for each region Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.

2

SECTION 1 SERVICE CAUTIONS AND DISASSEMBLY

1.1

LAYOUTS OF MAJOR BOARDS
DV MAIN BOARD ASSEMBLY ROM BOARD ASSEMBLY 0 3
1 0

The major circuit boards in the BR-DV600 include the DVC Unit which is named the DV300, the Video I/O board which is the signal input/output interface, AUD S/S board, SW REG board and FRONT board. The DVC Unit includes the DVC mechanism assembly, video/audio digital signal processors and servo/mechanism control circuitry. The DVC Unit is basically identical to that used with the GY-DV500, but they are not interchangeable.

DC DC BOARD ASSEMBLY 0 2 MECHANISM ASSEMBLY M 6

P/R&MDA BOARD ASSEMBLY 0 1

S1 S1
SW REG BOARD ASSEMBLY 1 4

S1

VIDEO I/O BOARD ASSEMBLY 1 5

REAR3 BOARD ASSEMBLY 0 8

S8 S1
REAR4 BOARD ASSEMBLY 0 9

S1 S7

DCDC BOARD ASSEMBLY 1 2

S1

S1

JUNCTION BOARD ASSEMBLY 1 1 REAR1 BOARD ASSEMBLY 0 6 REAR5 BOARD ASSEMBLY 1 7

FRONT BOARD ASSEMBLY 0 5

S3 S1

AUD S/S BOARD ASSEMBLY 1 3

FRONT SUB BOARD ASSEMBLY 1 6

S3

1-1

1.2

REMOVING THE MAJOR PARTS

1.2.3 Removing the Top Cover (1) Remove the 4 screws (S1). (2) Remove the top cover by sliding it in the direction of the arrow.
S1

1.2.1 Disassembly Flowchart The following flowchart shows the disassembly procedure to be used when performing a diagnosis of the board assemblies or mechanisms. Be sure to unplug the power cord before proceeding with a disassembly or assembly.
START

Removing the top cover (Section 1.2.3)

Removing the front panel assembly (Section 1.2.4)

Removing the bottom cover (Section 1.2.5)

S1
1.3 Diagnosing the Major Boards 1.2.6 Removing the DVC Unit

Fig. 1-2-3 1.2.4 Removing the Front Panel assembly (1) Remove the front panel assembly by disengaging the 4 hooks (L1).

Diagnosis of board assemblies

1.4 Disassembling the DVC Unit

Diagnosis of mechanism

Fig. 1-2-1 1.2.2 Replacing the Fuses CAUTION Before replacing the fuses, be sure to investigate what caused the fuse to blow and repair it. For the protection and safety of the equipment, always replace fuses with the specified ones. (1) Unplug the power cord from the power outlet before proceeding to replace the fuse. (2) Remove the top cover (Section 1.2.3). (3) Remove the Video I/O board (Section 1.3.2). (4) Remove the shield plate from the REG board (Section 1.3.4). (5) Fuses F101 and F102 are located on the SW REG board.
F101 F102 SW REG board

L1

L1

Fig. 1-2-4

1.2.5 Removing the Bottom Cover (1) Remove the 3 screws (S2).

S2

Fig. 1-2-5 Fig. 1-2-2 1-2

1.2.6 Removing the DVC Unit (1) Remove the 4 screws (S3). (2) Disconnect the wire connected to CN801 of the DV MAIN board. (3) The DV MAIN board and the junction board are connected via CN1 and CN2. Disconnect these connectors and remove the boards by lifting them upward.

1.3

DIAGNOSIS OF MAJOR BOARDS

1.3.1 Adjustment & Diagnosis of the DV MAIN Board and Mechanism (1) Remove the 4 screws (S4) (black) from the DV MAIN board. (2) Remove the 2 screws (S2) from the Junction board. (3) Stand both the DV MAIN and Junction boards as shown in Fig. 1-3-2 and diagnose them. CAUTION During diagnosis and assembly, make sure that the DV MAIN board and the Junction board are connected correctly via the connectors.

CN801 S3

S3

S4 Fig. 1-2-6 S2 S4

Fig. 1-3-1

Junction board

DV MAIN board

Fig. 1-2-7 DVC Unit

Fig. 1-3-2 1-3

1.3.2 Diagnosing the Video I/O Board (1) Remove the 4 screws (S2). (2) Stand the board on the chassis slit as shown in Fig. 1-3-4 during diagnosis.

1.3.3 Diagnosing the AUD S/S Board (1) This board can be diagnosed by removing the bottom cover as described in 1.2.5. (2) To diagnose the back of the board, remove the 4 screws (S2). S2

S2

S2

S2 Fig. 1-3-5 1.3.4 Diagnosing the SW REG Board Fig. 1-3-3 (1) Remove the screw (S5) and remove the shield cover by sliding it in the direction of the arrow. (2) Remove the screw on the DCDC board. Then, stand the DCDC board upright and it may be diagnosed. (3) To diagnose the back of the REG board, remove the 4 screws (S5).

Shield cover

S5

Fig. 1-3-4

Fig. 1-3-6

1-4

DCDC board

1.3.7 Diagnosing the REAR 1 Board (1) Remove the screw (S5) from the REAR 5 board. (2) Remove the 2 screws (S2) and then remove the rear panel by sliding it upward.

S5 S5

S5

Fig. 1-3-7

1.3.5 Diagnosing the FRONT Board (1) Remove the 2 screws (S2).
S2 S2

S2

S2

Fig. 1-3-10

Fig. 1-3-8 1.3.6 Diagnosing the FRONT Sub-Board (1) The FRONT sub-board is connected to the FRONT board via CN1, CN2 and CN3. Pull the sub-board toward the front to disconnect the connectors and remove the sub-board from the Front board. (2) To supply power to the FRONT sub-board, attach an extension board as shown in Fig. 1-3-9.

Fig. 1-3-9 Extension board: PRX47372A (3 sets)

1-5

1.4

DISASSEMBLY OF THE DVC UNIT

1.4.2 Disassembling the Rear Part of the DVC Unit (1) Remove the 2 screws 3 and remove the rear side stay.

The DVC unit incorporated in the unit can be disassembled as described below. Note that the following description deals only with the method of removing the DVC unit from the VCR unit. 1.4.1 Disassembling the Front Part of the DVC Unit (1) Remove the DVC unit from the VCR (see section 1.2.6). (2) Remove the DV MAIN board. (3) Remove the 2 screws 1 and remove the stay on the front cover. The cover of the cassette insertion slot will come out together with it.

3
Fig. 1-4-2(1) (2) Remove the 2 screws 4 and remove the active head cleaner. During this operation, be careful not to apply excessive force to the wire that is connected between the active head cleaner assembly and CN609 on the PR & MDA boards.

4
1
Fig. 1-4-1(1) (4) Remove the 2 screws 2 and remove the front stay.

Fig. 1-4-2(2) (3) Remove the 2 screws 5 and remove the side stays.

2
Fig. 1-4-1(2)

5
Fig. 1-4-2(3) 1-6

(4) Insulators (blue) are attached to the retaining screws. Be sure to attach the insulators when re-assembling the side stays. (5) The side stays to both sides are attached in the same way. Remove the 2 screws 6 and remove the side stays.

6
Fig. 1-4-3

6
Fig. 1-4-2(4) (6) After removing the rear stays and side stays (left and right), remove the 2 screws 7 then remove the PR & MDA board. When removing the PR & MDA boards, be careful not to damage the wires and FFCs connecting them to the mechanism assembly housing motor and power supply board.

1.4.4 Removing the Mechanism Assembly (1) Remove the 3 screws 8. This allows the mechanism assembly to be removed from the stays When it is required to disassemble the mechanism unit itself, see SECTION 2.

8
Fig. 1-4-4(1) (2) When the remove the mechanism unit completely, also remove the connector from the rear.

7
Fig. 1-4-2(5)

1.4.3 Removing the Cassette Housing Assembly (1) Remove the 2 screws 6 and remove the cassette housing assembly.



Fig. 1-4-4(2) 1-7

1.5

TAPE EJECTION IN CASE OF EMERGENCY

When the cassette tape cannot be ejected normally, take it out by the following methods. 1.5.1 Tape Ejection Using Forced Eject Mode (Short-circuiting of Internal TP) GY-DV500 is provided with a compulsory eject mode for use in case the button operations are not accepted due to a malfunction of the mechanism control circuitry. When an attempted operation of the operation buttons is not accepted, set the compulsory eject mode as described below before removing the tape. CAUTION This mode is effective only when the electrical and mechanical systems of the mechanism unit are normal and a tape ejection operation is not accepted due to a problem of the electrical system. If there is a problem in the mechanical system of the unit, this mode may be ineffective. If compulsory ejection is performed in such a case, the tape could be damaged or cut.

(3) Apply 3 V DC to the electrodes at the top of the loading motor (red wire to + pole, brown wire to - pole) to unload the tape. Unload it little by little because it could be damaged or contaminated by grease if the pole base assemblies are returned completely beyond the position of the tape.

Brown wire Red wire

Fig. 1-5-2(1) (1) Remove the Top cover (see section 1.2.3). (2) With the power supply on, short-circuit TP107 on the DV MAIN board with the GND using a wire, etc. (3) Forced ejection is activated to eject the tape. (4) If the tape slackens, take it up by rotating the shaft at the top of the capstan motor in the direction of the arrow using a sharp-tipped object (chip IC replacement tool, etc.). (5) Repeat steps (3) and (4) above until the tape is taken up completely. (6) After confirming that the tape has been taken up completely, rotate the gear of the cassette housing assembly in the direction of the arrow in order to eject the cassette tape.

DV MAIN board TP107
Fig. 1-5-1 1.5.2 Tape Ejection without Using the Forced Eject Mode Activate the loading motor by applying DC voltage to its two terminals. NOTE When a forced ejection is not accepted because the loaded cassette tape cannot be ejected due to a fault in the electrical system or because of some problem in the mechanism unit, eject the tape by using the following procedure. However, as this mode drives the loading motor, it assumes that the mechanical system is operating normally. (1) Turn off the power supply to the unit. (2) Flip open the DV MAIN board to expose the mechanism (see section 1.3.1). 1-8 Shaft Fig. 1-5-2(2) Gear

1.5.3 Manual Tape Ejection If the loading motor cannot be run by the procedure outlined in section 1.8.2, the mechanism may be defective. When the loading motor is defective, remove the tape as described below. (1) Remove the DVC unit from the main unit. See section 1.2.6 for the removal method. (2) After removing the DVC unit, remove the DV MAIN board . (3) Remove the 2 screws and remove the active head cleaner assembly (see section 1.4.2). (4) Remove the side cover to easy operation (see section 1.4.2). (5) Remove the 2 screws and remove the rear panel from the side of the PR & MDA board. Carefully unplug the wires so as not to damage them, then remove the PR & MDA board (see section 1.4.2).

3

3
Fig. 1-5-3(3)

Loading motor

(9) Unload the pole base assemblies by rotating the gear shown in the figure in the direction of the arrow.

1
Fig. 1-5-3(1) (6) Remove the 2 screws 1 and remove the active head cleaner stay. Gear Fig. 1-5-3(4) (10) The pole base assemblies should be unloaded little by little. If they are returned completely beyond the position of the tape, the tape may slacken and become damaged or stained by grease. (11) If the tape slackens, take it up by rotating the shaft on the top of the capstan motor in the direction of the arrow using a sharp-tipped object (chip IC replacement tool, etc.) (see section 1.5.2-(4)). (12) Repeat steps (9) and (10) above until the tape is taken up completely. (13) After confirming that the tape has been taken up completely, tighten the cassette housing retaining screws which were loosened in step (6). (14) Attach and clamp the cassette housing again, then rotate the gear of the housing assembly in the direction of the arrow to eject the cassette tape in the same way as in section 1.5.2-(6).

2
Fig. 1-5-3(2) (7) Loosen the 2 screws 2 so that the cassette housing is separated freely. (8) Remove the 4 screws 3 and remove the loading motor.

1-9

1.6

MENU SWITCHES

1.6.1 Displaying the Menu Switches When the menu button is pressed, the menu switches which can be set by the user are output at the MONITOR OUT signal and on the counter display (for the contents of the setup menu, refer to page 18 of the instruction manual). Then, without loading a tape, press the [STOP] and [EJECT] buttons simultaneously to display the menu switches including the service menu. When a menu item has been changed and it is required to save it, press the [SET] button. "DATA SET" will blink on the counter display and the set returns to the normal mode. To return to the normal set-up menu, set the Operate switch to OFF temporarily. 1.6.2 Configuration of Service Menu (Monitor Out Display)
00 1 0 2 0 3 0 4 0 5 0 7 0 HM RV EH OT 0 0 0 0 0 0 0 : : : : : : : : : : : S E R V O / S Y S T EM V I DEO AUD I O SYSTEM T I ME CODE ONSCR E EN D I P SW HOUR ME T ER ROM V E RS I ON ERROR H I STORY OTHERS

SHIFT+

SHIFT-

Initial screen of the service menu. Select an item with the [SHIFT+] or [SHIFT-] button, and press the [SELECT] button to advance to the lower level in the menu hierarchy.

HOUR METER
SHIFT+ SELECT

SHIFT+

SHIFT-
DH TH PH

( H O UR : DRUM : T : P : C : L

ME T E R ) R 00 M 00 ER 00

SHIFT-

CH L D

METE 0 OTAL DRM HOUR 0 OWE R HOUR ME T 0 AP HOUR ME T ER 0 OAD I NG T I ME S

HOUR

Hour meter data can be checked. See section 1.6.4.
000H ETER 000H 000H

00000H 000000

EJ HC
F R

( H O UR ME T E R ) : EJECT T I MES : HEAD CR EAN I NG T I MES 000000 000000 T I MES 000000

: F WD / R E V

ROM VERSION
SY SELECT L T US UM RM SHIFT+ SHIFT- C 2 : E RR C 3 : E RR C 4 : ERR C

( ROM : SYSCON : LCD/ TC : UN I T : UN I T : JVC

V E RS I ON ) ROM ROM VER . 01 VER . 01 SYS MSD ROM ROM VER . 01 VER . 01 V E R. _ _

ROM version data can be checked. See section 1.6.5 .

R E MO C O N ROM

Error history of the 4 most recent errors can be checked. Pressing the [SELECT] switch in this screen displays the mechanism information of each error.
( ME CHAN I SM SELECT ( MODE ) ( ( ( ( ( ( ( EDCD HOUS SAF E BG I N REM P . TM T EMP ) ) ) ) ) ) ) SW I NFO . )

ERROR HISTORY
SELECT

( ERROR
1 : E RR 7 1 0 1

H I STORY )

A 7 A 7 A 7 A

P MOT 101 P MOT 101 P MOT 101 P MOT

OR OR OR OR

FA I LURE FA I LURE FA I LURE FA I LURE MENU

REC REC PAUSE HLH OF F ( CASS ) OF F OF F ( END ) O O H O OM OOOOOOH 60~

ON ON

SHIFT+

SHIFT-
MS ML

( OTHERS ) : MEMORY : MEMORY SW SW SAVE OF F LOAD F F E F F R F F F F O M I : MEMORY SW I N I T I A L I Z O E C : E RROR H I S TORY C L EA O L CD : L CD / K E Y T E S T O

See sections 1.6.5 and 1.6.6. The set-up menu contents can be saved, loaded or initialized and the hour meter data can be reset. See section 1.6.8. After switching an item from OFF to ON using [SELECT], execute the selected item by pressing [DATA SET]. It is not possible to execute more than one item simultaneously. When an item is switched ON, other items are switched OFF.

OTHERS
SELECT

( OTHERS )
DHC : DRUM CHC : CAP

H . M . H .M.

CL EAR OF F CL EAR

O CL EA O E T C : E J E C T T I ME S C L E A R O H T C : H . C L E AN T I ME S C L E A O
L T C : L OAD I NG

T I ME S

F F R F F F F R F F

( OTHERS )
F T C : F WD / R E V

T I ME S

CL EAR OF F

1-10

1.6.3 Contents of the User and Service Menu CAUTION The Initial setting is that which is set during menu switch initialization.
Group 000 SERVO/ SYSTEM Item 002: OPERATION LOCK 003: SYNC SELECT 050: REMOTE SELECT When the SP-K41 is installed the display is changed from "RS422A" to "RS232C". Setting ON OFF EXTERNAL AUTO IEEE 1394
RS422A IEEE 1394+RS422A JVC BUS JVC BUS+IEEE1394 JVC BUS+RS422A JVC BUS+RS422A+1394

Counter Display 002 003 050 -00 -01 -01 -03 -01 -04 -05 -08 -09 -12 -13 -00 -01 -02 -03 -00 -15 -00 -15 -00 -01 -02 -03 -00 -01 -00 -01 -00 -01 -00 -01 -00 -01 -00 -01 -00 -01 -00 -01 -00 -01 -02 -03 -04 -05 -06 -07 -00 -01 -00 -01

Initial Setting OFF AUTO

Contents User setup menu (See instruction manual page 18.) User setup menu (See instruction manual page 18.)

JVC BUS+RS422A+1394

User setup menu (See instruction manual page 18.)

051: ERR RATE THRESHOLD

4000 8000 12000 NOTHING 10.512.0V (0.1Vstep) 10.512.0V (0.1Vstep) LINE Y/C COMPONENT IEEE1394 OFF ON OFF ON OFF ON 32K 48K OFF ON ENABLE DISABLE OFF ON ENABLE DISABLE 1 SEC 10 SEC 30 SEC 1 MIN 2 MIN 3 MIN 4 MIN 5 MIN SHORT FF PLAY OFF ON

051

8000

Head clog warning threshold level selection. The value is the error rate with viterbi ON. Lowering the threshold level (increasing the value) will result in a margin decrease until block noise is appeared. Battery shutdown voltage setting.

080: BATTERY SHUTDOWN V

080

10.5V

081: BATTERY ALARM V

081

11.0V

Battery alarm detection voltage setting.

100 VIDEO

108: VIDEO INPUT SELECT

108

LINE

User setup menu (See instruction manual page 18.)

200 AUDIO

125: SET UP (U-Model only) 212: AUDIO OUT AT SEARCH 214: V. FADE 245: SAMPLING RATE

125 212 214 245 300

ON ON ON 48K ON

User setup menu (See instruction manual page 18.) User setup menu (See instruction manual page 19.) User setup menu (See instruction manual page 19.) User setup menu (See instruction manual page 19.) Direct ejection setting. ON : Direct ejection enabled. OFF : Direct ejection disabled. REC inhibition setting ENABLE : Recording is possible on cassettes with tab. DISABLE : Recording is inhibited under any condition. FULL REPEAT setting during REC OFF : REC FULL REPEAT does not occur. ON : REC FULL REPEAT occurs. ENABLE : Long pause is canceled in a certain period (set with Menu: 307). DISABLE : Long pause is not canceled. Long pause time setting. Limited to 3 min. when the internal temperature of the VCR is low.

300 SYSTEM

300: DIRECT EJECT

304: REC DISABLE

304

ENABLE

305: REC REPEAT

305

OFF

306: LONG PAUSE DISABLE

306

ENABLE

307: LONG PAUSE TIME

307

5 MIN

311: AUTO PLAY 312: AUTO REW

311 312

SHORT FF OFF

User setup menu (See instruction manual page 19.) User setup menu (See instruction manual page 19.)

1-11

300 SYSTEM

315: LOCAL FUNCTION

EJT/STP
PLY/FF/REW/EJT/STP

315

ALL ENABLE ALL DISABLE 316: LOCAL COM FUNCTION ALL DISABLE EJT/STP 316

-00 -01 -02 -03 -00 -01 -00 -01 -00 -07 -00 -01 -00 -08 -00 -01 -02 -00 -01 -00 -01 -02 -00 -01 -00 -01 -00 -01 -00 -01 -00 -01 -00 -08 -00 -11 -00 -01 -00 -01 -00 -01 -00 -01 -00 -01 -02 -03 -00 -01 -02 -00 -01 -00 -01 -00 -01

EJT/STP

ALL DISABLE

Setting of VCR buttons accepted in remote mode EJT/STP : Only EJECT and STOP are accepted. PLY/FF/REW/EJT/STP : PLAY, FF, REW, EJECT and STOP are accepted. ALL ENABLE : All buttons are accepted. ALL DISABLE : No button is accepted. Setting of remote control commands accepted in local mode ALL DISABLE : All commands inhibited. EJT/STP : Only EJECT and STOP are accepted. System setting (Switching prohibited) User setup menu (See instruction manual page 19.) User setup menu (See instruction manual page 19.) User setup menu (See instruction manual page 19.) User setup menu (See instruction manual page 19.) User setup menu (See instruction manual page 20.) The REGEN source of TCG setting TC+UB : Set the TC and UB to REGEN TC : TC only UB : UB only Phase correction bit setting User setup menu (See instruction manual page 20.) User setup menu (See instruction manual page 20.) User setup menu (See instruction manual page 20.) User setup menu (See instruction manual page 20.) User setup menu (See instruction manual page 20.) User setup menu (See instruction manual page 20.) User setup menu (See instruction manual page 20.) User setup menu (See instruction manual page 20.) Selection whether warning messages are displayed (if warning detection is executed) Selection whether alarm messages are output ON : Alarm messages are muted. OFF : Alarm messages are output. User setup menu (See instruction manual page 20.)

336: NTSC/ PAL 353: EDIT ADJUST

NTSC PAL 0F 7F OFF ON TYPE1 TYPE8 12V 13.2V 14.4V ENABLE DISABLE TC+UB TC UB OFF ON PRESET REGEN FREE RUN REC RUN DROP NON DROP OFF ON 08

336 353

NTSC (U-Model) PAL (E-Model) 0F

360: AUTO REW AT TIMER 363: CONTROLLER SELECT

360 363

OFF TYPE1

396: BATTERY SELECT

396

12V

397: FAN STOP SHUT DOWN 400 TIME CODE

397 403

ENABLE

403: REGEN MODE

TC+UB

407: PHASE CORRECTION 414: TCG SELECT 415: TCG MODE 416: NON DROP/DROP (U-Model only) 500 ON SCREEN 500: ON SCREEN 501: CHARACTER H. POSITION 502: CHARACTER V. POSITION

407 414 415 416 500 501

ON REGEN REC RUN DROP ON 0

011

502

0

504: INFORMATION SELECT 505: REMAIN ENABLE 509: WARNING MESSAGE 512: MUTING ALARM MESSAGE 514: TIME SELECT

TIME MODE+TIME OFF ON OFF ON ON OFF DATE CLOCK DATE+CLOCK TC JAPAN USA EUROPE TC CLOCK OFF ON

504 505 509 512

MODE+TIME

OFF ON OFF

514

TC

515: CALENDAR SELECT

515

516: DISPLAY SELECT 700 DIP SW 700: DIP SWITCH-0 715: DIP SWITCH-15

516 700 715

Calendar display format selection USA (U-Model) JAPAN : Year/Month/Day EUROPE (E-Model) USA : Month/Day/Year EUROPE : Day/Month/Year User setup menu TC (See instruction manual page 20.) Switching inhibited. Must always be OFF. OFF

1-12

1.6.4 HOUR METER This screen allows the data of hour meters to be checked. Item DH : DRUM HOUR METER Counter Display DH Description Displays the drum rotation hours. Displays the total drum rotation hours. This data cannot be reset. PH : POWER HOUR METER CH : CAP HOUR METER LD : LOADING TIMES EJ : EJECT TIMES HC : HEAD CLEANING TIMES FR : FWD/REV TIMES PH cH LD EJ Hc FR Displays the power ON hours. This data cannot be reset. Displays the capstan motor rotation hours. Displays the loading count. Display the ejection count. Displays the active cleaning head operation count. Displays the forward or reverse operation count 999999H 999999TIMES 999999TIMES 999999TIMES 999999TIMES 999999H Max. Display Hours/Count 999999H 999999H

TH : TOTAL DRM HOUR METER TH

are the figures of time (or count).

1.6.5 ROM VERSION The ROM versions can be confirmed. Item SY : SYSCON ROM VER. LT : LCD/TC ROM VER. US : UNIT SYS ROM VER. Counter Display SY LT US Board Name Symbol No. AUD S/S board IC513 FRONT board IC13 DV MAIN board IC101 DV MAIN board, IC401 ROM board, IC1 (The MSD COM program is written inside IC401 and in ROM board IC1.) is the version display (lower 2 digits). Remark PLSL1069-V1- PLSL1070-V1- MN102F1617HL- M31020EAVP- M27W102-80N6-

UM : UNIT MSD ROM VER. U

RM : JVC REMOCON ROM VER

R

U U





ROM version of the remote control unit connected through the JVC bus.

1-13

1.6.6 ERROR HISTORY This screen allows the history of the 4 most recent errors to be checked.
Error code
( ERROR H I STORY )

Latest warning Warning before the latest Warning before the above Warning before the above

1 : ERR C 2 : ERR C 3 : ERR C 4 : ERR C

7 A 7 A 7 A 7 A

1 P 1 P 1 P 1 P

01 MO 01 MO 01 MO 01 MO

Error message
TOR TOR TOR TOR FA I LURE FA I LURE FA I LURE FA I LURE

( ME CHAN I SM

SW

I NFO . )

1.6.7 MECHANISM SW INFO This screen allows the mechanism mode at each error to be displayed.

( MODE ) ( ( ( ( ( ( ( EDCD HOUS SAF E BG I N REM P . TM T EMP ) ) ) ) ) ) )

REC R E C P A U S E HLH OF F ( CASS ) OF F OF F ( END ) O O H O OM OOOOOOH H I GH

ON ON

Display

Item (MODE)

Description Mode at the moment of VCR error & mode immediately before. Rotary encoder output.

Input Pin --

Display PLAY, STILL, REC, REC PAUSE, NO CASSETTE, EJECT, STNDBY-ON, FF, REW, SHTL, STILL, SHTL X10, SHTL X-10 Shows H or L according to the mechanism position. Rotary encoder terminal (ENCD) H L H CAM0 CAM1 CAM2

(ECOD)

DV MAIN board IC401 Pin 44 CAM0 Pin 45 CAM1 Pin 46 CAM2 DV MAIN board IC401 pin 27 DV MAIN board IC401 pin 32

(HOUS)

Cassette housing switch status.

ON : Housing inserted/ejected status OFF : Housing operating status ON : Cassette tape inserted OFF : Cassette tape not inserted or during insertion /ejection ON : Non-recordable tape inserted, cassette tape not inserted or during insertion /ejection OFF : Recordable tape inserted ON : Tape leader section detected OFF : Magnetic tape section detected ON : Tape leader section detected OFF : Magnetic tape section detected Remaining tape time

(CASS)

Cassette switch status.

(SAFE)

REC safety switch status.

DV MAIN board IC401 pin 47

(BGIN)

Tape begin sensor status.

DV MAIN board IC401 pin 126 DV MAIN board IC401 pin 125 --

(END)

Tape end sensor status.

(REM)

Remaining tape at the moment of error. POWER HOUR METER data at the moment of error. Set's internal temperature at the moment of error

(P.TM)

--

POWER HOUR METER time

(TEMP)

DV MAIN board IC101 pin 75

UNDER NORMAL HIGH OVER

: under 10C : 10 to 40C : 40 to 60C : over 60C

1-14

1.6.8 OTHERS This screen allows the setup menu to be saved temporarily, loaded or initialized. To execute an item, switch it from "OFF" (displayed as "00") to "ON" (displayed as "01") with the [SELECT] button, then press the [DATA SET] button (excluding hour meter). As switching an item "ON" switches other items automatically "OFF", it is not possible to execute more than one item simultaneously. Item MEMORY SW SAVE MEMORY SW LOAD MEMORY SW INITIALIZE Counter Display Factory Default S L Description Saves the data set with the setup menu. Loads the data set for the setup menu. Initializes the setup menu data to the initial setting. The hour meters are not reset.

ERROR HISTORY CLEAR LCD/KEY TEST

Ec LcD

DRUM H.M. CLEAR CAP H.M. CLEAR LOADING TIMES CLEAR EJECT TIMES CLEAR H. CLEAN TIMES CLEAR FWD/REV TIMES CLEAR

DHc cHc L7c E7c H7c F7c

U U

00 00 00

OFF OFF OFF

U

00 00

OFF OFF

Clears the error history. For use in the Operation key LED lighting check. When "START" is set and the [DATA SET] button is pressed, "PERFORM" is displayed in the MONITOR OUT and LCD display and the set enters the key test mode. In this mode, pressing any operation key lights the corresponding LED and an indication on the display. Pressing a key does not cause the VCR to act. To exit from the key test mode, change the setting from "START" to "STOP" and press the [DATA SET] button. "PERFORM" is displayed in the MONITOR OUT and LCD display and the set returns to the normal mode. Resets the drum hour meter. Resets the capstan hour meter. Resets the loading count. Resets the ejection count. Resets the head cleaning count. Resets the forward/reverse operation count

00 00 00 00 00 00

OFF OFF OFF OFF OFF OFF

1-15

1.7

WARNING CODES

If trouble occurs during operation, the set conducts self-diagnostics of the cause and shows the result in the on-screen display and counter display. 1.7.1 Warning Errors
Error Details Counter display On-screen display
Condensation on the drum "DEW" mark lit CONDENSATION ON DRUM

Error History VCR Operation Cause Detection Method
Voltage at pin 124 of DV MAIN board IC401 is checked. DEW ON: >2.4 V DC DEW OFF: <1.8 V DC Rotary encoder outputs at pins 44, 45 and 46 of DV MAIN board IC401 are checked, and error is identified when loading does not complete in 4 sec. Rotary encoder outputs at pins 44, 45 and 46 of DV MAIN board IC401 are checked, and error is identified when unloading does not complete in 4 sec.

Q: Recorded : Not recorded

Operation stops if cassette is loaded. Condensation of dew. If there is no cassette loaded, the drum continues rotation. Operations are accepted when dew has evaporated. AUTO OFF Failure in loading motor, rotary encoder or mechanism.



Loading failure Err 3200 FAILURE LOADING Unloading failure Err 3300 FAILURE UNLOADING

Q

When unloading fails, cassette is Failure in loading motor, rotary encoder or loaded again then unloading is mechanism. retried. If this fails again, AUTO OFF occurs.

Q

Ejection failure AUTO OFF Err 4100 CASSETTE EJECT FAILURE Intake failure Err 4200 HOUSING FAILURE Begin/End sensor simultaneous detection Err 5605 TAPE DEFECTIVE Tape cut during loading Err 5607 TAPE DEFECTIVE End detected after short REW Err 5702 END LEADER DETECTION Beginning detected after short FF Err 5802 BEGIN LEADER DETECTION Drum motor rotation error Err 7001 DRUM MOTOR FAILURE Capstan motor rotation error Err 7101 CAP MOTOR FAILURE SUP reel rotation failure Err 7202 SUPPLY REEL FAILURE SUP tape slack during capstan drive Err 7203 SUPPLY REEL FAILURE TU reel rotation failure Err 7302 TAKE UP REEL FAILURE SUP tape slack during capstan drive Err 7303 TAKE UP REEL FAILURE Tape slack after unloading Err 7305 TAKE UP REEL FAILURE SYSCON REF ERROR Err 8400 SYSCON REF ERROR AUTO OFF

Defect in cassette housing switch or cas- When ejection end (pin 27, DV MAIN board sette housing motor. IC401) does not occur in 3 sec. after start of ejection. Defect in cassette housing switch or cas- When housing switch (pin 27, DV MAIN board IC401) is not detected in 3 sec. afsette housing motor. ter start of intaking. Tension error or mechanism defect lead- When both tape beginning sensor (pin 126, ing to tape cutting. Cassette was inserted DV MAIN board IC401) and tape end sensor (pin 125, DV MAIN board) outputs go while internal tape is slack, etc. Low simultaneously. Tape is cut during loading. Mode transition When SUP or TU reel FG is not detected during loading. error of mechanism. Tape is cut after end of tape has been de- When tape end sensor (pin 125, DV MAIN tected. Mode transition error of mecha- board IC401) remains Low level after 3 sec. of tape transport by short REW after nism. detection of tape end in PLAY mode, etc. Tape is cut after beginning of tape has been When tape beginning sensor (pin 126, DV detected. Mode transition error of mecha- MAIN board IC401) remains Low level after 3 sec. of tape transport by short FF afnism. ter detection of tape beginning in SEARCH REV mode, etc. Drum motor or MDA circuit defect. FG de- When drum FG (pin 54, DV MAIN board IC401) is not detected for more than 4 sec. tector circuit defect. in drum driving mode. Capstan motor or MDA circuit defect. FG When drum FG (pin 55, DV MAIN board IC401) is not detected for more than 2 sec. detector circuit defect. in capstan driving mode. Timing belt is cut or a reel control part in When SUP REEL FG is not detected for more than 2 sec. in a tape transport mode. mechanism is defective. Timing belt is cut or a reel control part in When more than 4500 capstan FG pulses are detected in a single SUP REEL FG mechanism is defective. pulse in a capstan driving mode. Timing belt is cut or a reel control part in When TU REEL FG is not detected for more than 2 sec. in a tape transport mode. mechanism is defective. Timing belt is cut or a reel control part in When more than 4500 capstan FG pulses are detected in a single TU REEL FG pulse mechanism is defective. in a capstan driving mode. Timing belt is cut or a reel control part in When the number of TU REEL FG pulses during unloading is less than specified (this mechanism is defective. depends on the number of windings). System controller reference signal failure The servo reference signal is not transmitted to the SYSCON. Communication failure.

Q

Q

AUTO OFF



AUTO OFF



AUTO OFF

Q

AUTO OFF

Q

AUTO OFF

Q

AUTO OFF

Q

AUTO OFF

Q

AUTO OFF

Q

AUTO OFF

Q

AUTO OFF

Q

AUTO OFF

Q

AUTO OFF

Q

1-16

1.7.2 INVALID ERRORS
Error Details Counter display On-screen display
Pc data tape is in use Pc TAPE PC TAPE INHIBIT NTSC/PAL reproduce inhibition PAL inh/ntSc inh PAL INHIBIT/ NTSC INHIBIT LP reproduce inhibition LP inh LP INHIBIT Recording inhibition rEc inh REC INHIBIT STOP

Error History VCR Operation Cause
A cassette for the computer is loaded.

Detection Method
A different cassette type (pins 117, 118 and 119, DV Main board IC401) is detected after intaking cassette .

Q: Recorded : Not recorded

Continues operation.

A tape that has been recorded with an in- AUX data in the playback signal is detected. compatible TV format is played.


Continues operation. A tape recorded in LP is played. AUX data in the playback signal is detected.



STOP

Accidental erasure protect slider of cassette is set to SAVE. MENU 304: REC DISABLE is set to DISABLE. Copy-guarded signal cannot be recorded.





No DV input/Copy inhibited 1394 inh 1394 INHIBIT EE check error EE inh EE CHECK INVALID

STOP

No signal is input at DV IN/OUT terminals. Copy inhibit signal is input.


With LINE input, the input signal is detected. With IEEE1394 input, EE signal cannot be output in MONITOR OUT. Therefore, an INVALID error occurs when EE check is performed.



Continues operation.

When an EE check performed by pressing the REC button during playback shows that the LINE signal is not input. When the signal input is IEEE1394.



AUD DUB inhibition Adb inh AUDIO DUB INHIBIT

Operation stops.

Accidental erasure protect slider of cassette is set to SAVE. An attempt is made to dub on a tape that was recorded with a 48K sampling rate. MENU 304: REC DISABLE is set to DISABLE. Copy-guarded signal cannot be recorded.





SSF data error SSF inh SSF INHIBIT Fan motor stopped Fan StoP FAN MOTOR FAILURE Head clogged HEad CloG HEAD CLOG Servo fails to lock "SERVO" lit (No display)

Continues operation.

SSF data error.

The Model ID and reel No. are not recorded on the tape. SSF data is not recorded at the beginning of tape. Detection of pin 6, AUD S/S board IC515.



Operation stops in 60 sec. after Fan motor is stopped. the fan motor stops. (When menu SW 397: FAN STOP SHUTDOWN is "ENABLE") Continues operation. Video head is clogged.


When the error rate is more than 8000 with viterbi ON. The threshold can be varied with service menu SW 051 : ERR RATE THRESHOLD.



Continues operation.

Drum rotation phase error exceeds 10%. MSD COM detects drum rotation phase Capstan motor rotation speed is deviated based on phase error between TSR and HID signals. by more than 20%. Capstan motor rotation speed is detected from CAP FG. Battery alarm is detected Detection of pin 62, AUD S/S board, IC501. Alarm voltage is variable using service menu SW 081 : BATTERY ALARM V. Detection of pin 62, AUD S/S board, IC501. Warning voltage is variable using service menu SW 080 : BATTERY SHUTDOWN V.



Battery alarm Blinking mark (No display) Battery warning Blinking mark LOW BATTERY

Continues operation.



AUTO OFF

Battery shutdown is detected.



1-17

1.8 EEPROMs The EEPROMs are memories that can be erased or written electrically. As they hold the data required for VCR operations, adjustments and setup are required after replacing an EEPROM (also after replacing circuit boards). The following table shows the circuit boards and storage contents of the EEPROMs used in the set. EEPROM Stored Data After Replacement DC MAIN board Adjustment data for All data erased. adjustment software IC103 Hour meter data All data reset. Error history IEEE1394 ID data DV MAIN board Not used IC106 AUD S / S board Setup menu setting data IC508 All data erased. ID data erased.

[B] Load EEPROM Internal Data The EEPROM provided with the new board for replacement contains no data, while the EEPROM originally provided with the VCR unit contains the IEEE1394 ID data as well as all adjustment data written in the assembly and adjustments written on the production line. This means that the new VCR unit will not function if the new EEPROM is used in the condition in which it is delivered. When replacing the DV MAIN board, load the internal data of the EEPROM on the original board to the EEPROM of the new board. (1) How to use original EEPROM to new DV MAIN board. Remove the EEPROM from the original DV MAIN board, and attach the chip to the new board. (2) How to write data from the original board to the new EEPROM How to load all parameters in EEPROM on original board to new EEPROM by using the adjustment software. (For details, see section 3.7.13) (3) In case of original EEPROM on the original DV MAIN board was broken. Load the default data before making adjustments with the adjustment software, write the data in the new EEPROM, then make adjustments by following the adjustment procedures. (See section 3.7.12 for details.) And then, input the ID number on the original board to new EEPROM by using the adjustment software. (See section 3.7.13 for details.)

Reset to initial setting.

1.9

CAUTION FOR REPLACING THE DV MAIN BOARD AND AUD S/S BOARD

When the DV MAIN board or AUD S/S board has been replaced for servicing, be sure to enforce the following items. 1.9.1 DV MAIN Board [A] About the ID Management Label Each VCR unit carries an ID label in compliance with IEEE1394 showing the unique ID assigned on the production line. (See the following figure for the label position.) When replacing the DV MAIN board, remove the ID management label that was provided originally with the unit from the defective board and attach it in the same position to the new board.
DV MAIN board

1.9.2 AUD S/S Board The AUD S/S board EEPROM that stores the setup menu is IC508. While the corresponding EEPROM in the GY-DV500 stores the model ID for use in running the SSF function, the EEPROM in the BR-DV600 does not store the model ID because it does not handle the SSF function but simply reproduces SSF data.

ID Label

Fig. 1-9-1

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1.10 BACKUP OF TIME DATA The BR-DV600 uses a polyacene battery (C40) to back up the LCD microcomputer on the Front board assembly. This is the same battery as that used in the SR-9070 and a secondary battery with a capacity of more than 2 F (Farads). It is capable of backup for about 60 hours with only 6 hours of power supply (OPERATE ON), the backed up data includes the following: (1) TC generator data (In the free run mode, the count continues even during backup.) (2) Date and time data for sub-codes. (3) CTL counter data. 1.10.1 Backup Circuit The backup current to the polyacene battery is switched by IC10 on the Front board. When UNSW + 5 V drops below 4.6 V, this IC switches the microcomputer power to the LCD to the polyacene battery. At this time, IC10 sets the CS output to the Low level, the LCD microcomputer switches the clock oscillator to the power-saving X2 and functions in the sleep mode. The PRE END output is used to detect the battery voltage when a lithium battery is used. Although it provides the feedback signal to the microcomputer, the BR-DV600 does not utilize it. IC13 LCD CPU
V OUT

1.11 SET UP SW (U-MODEL ONLY) Menu SW No. 125 is the SET UP ON/OFF switch. Its setting affects the recording and playback of analog video signals. Recording signals .. This switch varies the sampling level for A/D conversion of the input signal. Playback signals .... This switch adds the setup level to the playback signal.
SET UP SW (No. 125)

Recording Signals Executes A/D conversion from the setup level.
235 100%

Playback Signals Adds the setup level.

ON
16 Digital level [DCC] Setup level

Executes A/D conversion from the pedestal level.
235 100%

Does not add the setup level.

OFF
16 Pedestal level

UNSW+5V 7 C40 Polyacene battery 3

IC10
V IN VBAT

Digital level [DCC]

6 5

68 60 65

VCD RST CS

CS

4

X1 4.9MHz
STOP Q6,Q7 DET PRESET

Set the switch correctly in accordance with the input signal. If the input signal contains the setup level while the SET UP SW is set to OFF, the input signal will be A/D converted and recorded together with the setup level component. If a tape, which has been recorded in such a way, is played on a VCR that is set to SET UP ON, a double setup will result. Note: When setting menu switch No.108 [VIDEO INPUT SELECT] to IEEE1394 even if menu switch No.125 [SET UP] is set to on position, set up signals will not be provided to DV output and analog output. If you would like to provide set up signals when playback, set menu switch No.108[VIDEO INPUT SELECT] to LINE or Y/C or COMPONENT position (except IEEE1394).

X2 32.8KHz

Fig. 1-10-1 Backup and Compulsory Reset Circuit

1.10.2 Compulsory resetting Press the STOP and PRESET buttons simultaneously to compulsory reset the LCD CPU.

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1.12 EDITING SYSTEM USING THE BR-DV600 Since the BR-DV600 is basically a feeder VCR, it should be used as the player when building an editing system. Using the JVC bus with the controller may also support its use as an editor. However, note that in this case it is only capable of assembly editing and cannot be used in insert editing. At the time of shipment, the system configurations for which connections are guaranteed are as shown below. 1.12.1 Control with JVC bus Applicable controller: RM-G800 only.

1. BR-DV600 + BR-DV600 BR-DV600 RM-G800
JVC BUS JVC BUS

Editing function (Only the assembly editing and AUD DUB are available.) Connection ASSEMBLE AV INSERT V INSERT A INSERT No No A DUB No Yes IEEE1394 ANALOG Yes Yes No No No No

BR-DV600

BR-DV600 Menu Switch No.353 : EDIT ADJUST setting Signal connection Player Analog BR-DV600 IEEE1394 BR-DV600 Setting Recorder 0F 0F BR-DV600 BR-DV600 Setting 4F 2F

2. BR-DV600 + S-VHS BR-DV600 RM-G800
JVC BUS JVC BUS

S-VHS

Applicable Recorders : 1. SR-S365 for NTSC, SR-S388E for PAL 2. BR-S800 BR-DV600 Menu Switch No.353 : EDIT ADJUST setting Signal connection Player Setting Recorder Analog Analog BR-DV600 BR-DV600 0F 0F BR-S800 SR-S365 Setting



3. S-VHS + BR-DV600 S-VHS RM-G800
JVC BUS JVC BUS

BR-DV600

Applicable players: 1. BR-S800/500 + SA-N50 *As the BR-DV600 accepts only STD signals, be sure to insert a TBS board. BR-DV600 Menu Switch No.353 : EDIT ADJUST setting Signal connection Player Analog BR-S800 or BR-S500 with SA-N50* Setting Recorder Setting 3F



BR-DV600

Fig. 1-12-1 NOTES (1) BR-DV600 does not support CTL editing. Set it to TIMECODE editing. (2) As the RM-G800 has been optimized for connection with the SR-S365 (PAL : SR-S388E), it may take a longer time for cue up when it is used with the BR-DV600. (3) As the RM-G800 does not have the BUMP function, BUMP does not operate even when the BR-S800 is used as the recorder. (4) (5) (6) (7) The editing accuracy of the RM-G800 is about 5 frames. As the BR-DV600 does not have framing servo, pictures may be edited at the 2nd field. During editing using the RM-G800, preview is not available if the BR-DV600 is used as the recorder. When the RM-G800U remote controller is used, the counter, etc. may malfunction due to interference generated by the peripheral equipment. In this case, set the clamp core to the controller cable. (See fig. 1-12-3.)

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1.12.2 RS-422A (9P) controller Applicable controller: RM-G820 only.

1. BR-DV600 + S-VHS BR-DV600 RM-G820
RS-422 RS-422

S-VHS

Applicable VCRs : 1. BR-S800 ( + SA-K26) 2. BR-S822

2. BR-DV600 + D-9 BR-DV600 RM-G820
RS-422
Fig. 1-12-2 NOTES (1) (2) (3) (4) (5) (6) BR-DV600 does not support CTL editing. Set it to TIMECODE editing. The editing accuracy is 1 frame with time code editing. As the BR-DV600 does not have framing servo, pictures may be spliced at the 2nd field. Setting for No. 353:EDIT ADJUST is not required. Set the initial setting to 0F. The EDIT TIMING of the controller is automatically set when the recorder reads the ID. In order to attain optimum editing precision, be sure to operate the RM-G820 LEARN function after connection.

D-9

Applicable VCRs : 1. BR-D750 / D85 / D80 2. BR-D92

RS-422

Measures to be taken when the RM-G800 malfunction
Coil the cable (BR-DV600 side) once that is from the RM-G800U connector, then attached a sleeve clamp core.

BR-DV600
SLEEVE CLAMP CORE

RM-G800

RM-G800U

SLEEVE CLAMP CORE

If an extension cable (VC-8030U) is used, attached a sleeve clamp core at two locations, one on the RM-G800U side and one on the BR-DV600 side . Additional extension cable is added. Extension cable (VC-8030U)
RE AR

BR-DV600

RM

-G

U 800

SLEEVE CLAMP CORE

RM-G800
Sleeve clamp core: Parts No. QQR0914-001 Fig. 1-12-3

SLEEVE CLAMP CORE

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1.13 ANALYSIS OF BLOCK NOISE (SYMPTOMS: POOR VIDEO, ABSENCE OF AUDIO) 1.13.1 Analysis Flow Chart In case of trouble, perform troubleshooting using the following flow chart. Start

OK Play cleaning tape. Dirt deposited on the head.

NG Play the recorded tape to measure error rate. Is the error rate less than 500 (one channel) and less than 1000(total) when the viterbi is on?

OK Played tape defect.

NG Check RF envelope. Is waveform flat? Are SUP and TU pulses continuous? OK The dirt deposited on the drum. Clean the drum. 2.12.5 Compatibili