JVC HR-A60UC Service Manual

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SERVICE MANUAL

VIDEO CASSETTE RECORDER

POWER

12 3 456 7089

CH(AUX)

–

REC

PLAY

REW FF

STOP

–

SET

TV/VCR TIMER

A.MONITOR SP/EP DISPLAY

–

TV CH

TV POWER

–

TV VOL

INPUT

SPECIFICATIONS

HR-A60U

PAUSE

ENTER

CANCEL C.RESET

GENERAL

Power requirement Power consumption

Power on Power off

Temperature

Operating

Storage Operating position Dimensions (W x H x D) Weight Format Maximum recording time

VIDEO/AUDIO

Signal system Recording/Playback system Signal-to-noise ratio Horizontal resolution Frequency range

Normal audio

Hi-Fi audio Input/Output

TUNER

Tuning system Channel coverage

VHF

UHF

CATV RF output

TIMER

Clock reference Program capacity Memory backup for timer

ACCESSORIES

Provided accessories Specifications shown are for SP mode unless specified otherwise.

E. & O.E. Design and specifications subject to change without notice.

: AC 120 V, 60 Hz :

9 W

: 1.7 W :

5°C to 40°C (41°F to 104°F) : –20°C to 60°C : Horizontal only : 360 mm x 95 mm x 222.5 mm (14-3/16" x 3-3/4" x 8-3/4") : 3.2 kg (7.1 lbs) : VHS NTSC standard

: 210 min. with ST-210 video cassette : 630 min. with ST-210 video cassette

: NTSC-type color signal and EIA monochrome signal, 525 lines/60 fields : DA-4 (Double Azimuth) head helical scan system

: 42 dB : 230 lines

: 100 Hz to 10,000 Hz : 20 Hz to 20,000 Hz :

RCA connectors (IN x 1, OUT x 1)

: Frequency-synthesized tuner : Channels 2–13

: Channels 14–69 : 113 Channels : Channel 3 or 4 (switchable; preset to Channel 3 when shipped) 75 ohms,

unbalanced

: Quartz : 1-month programmable timer/8 programs : Approx. 5 sec.

: RF cable (F-type), Infrared remote control unit, “AAA” battery x 2

(–4°F to140°F)

HR-A60UC V16D0

No.82953

2003/01

Section Title Page Section Title Page

Important Safety Precautions INSTRUCTIONS

DISASSEMBLY INSTRUCTIONS

REMOVAL OF MECHANICAL PARTS AND P.C.BOARDS ...............

1-1 TOP CABINET AND FRONT CABINET ............................ 1-1

1-2 FLAP ..................................................................................1-1

1-3 DECK CHASSIS ................................................................1-1

1-4 SYSCON PCB ................................................................... 1-1

2. REMOVAL OF VCR DECK PARTS.........................................1-2

2-1 TOP BRACKET..................................................................1-2

2-2 CASSETTE HOLDER ASS’Y.............................................1-2

2-3 CASSETTE SIDE L/R ........................................................1-2

2-4 LINK UNIT .........................................................................1-2

2-5 LINK LEVER / FLAP LEVER / SENSOR COVER R.......... 1-2

2-6 LOADING MOTOR / WORM..............................................1-3

2-7 TENSION ASS’Y................................................................1-3

2-8 T BRAKE ARM / T BRAKE BAND......................................1-4

S REEL / T REEL / IDLER ARM ASS’Y / IDLER GEAR ..............

2-9

CASSETTE OPENER / PINCH ROLLER BLOCK / P5 ARM ASS’Y.............

2-10

2-11 A/C HEAD ........................................................................1-5

2-12 FE HEAD ......................................................................... 1-5

2-13 CYLINDER UNIT ASS’Y ..................................................1-5

2-14 CAPSTAN DD UNIT.........................................................1-6

2-15

MAIN CAM / PINCH ROLLER CAM / JOINT GEAR ............

2-16 LOADING GEAR S/T UNIT..............................................1-6

CLUTCH ASS’Y / RING SPRING / CLUTCH LEVER / CLUTCH GEAR ...............

2-17

CASSETTE GUIDE POST / INCLINED BASE S/T UNIT / P4 CAP..............

2-18

KEY TO ABBREVIATIONS ........................................................1-8

PREVENTIVE CHECKS AND SERVICE INTERVALS............. 1-10

CLEANING ............................................................................... 1-10

SERVICE MODE LIST.............................................................. 1-11

WHEN “N” IS ALWAYS BEING DISPLAYED ON THE TV MONITOR ..

SERVICING FIXTURES AND TOOLS...................................... 1-11

MECHANISM ADJUSTMENT PARTS LOCATION GUIDE............

MECHANICAL ADJUSTMENT ................................................1-12

TAPE REMOVAL METHOD AT NO POWER SUPPLY .......... 1-12

1. CONFIRMATION AND ADJUSTMENT .................................1-12

CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION .

1-1 1-2 CONFIRMATION OF PLAYBACK TORQUE AND

BACK TENSION TORQUE DURING PLAYBACK...........1-12

1-3 CONFIRMATION OF VSR TORQUE...............................1-12

1-4 CONFIRMATION OF REEL BRAKE TORQUE................ 1-13

2. CONFIRMATION AND ADJUSTMENT OF TAPE

RUNNING MECHANISM ..................................................1-13

2-1 GUIDE ROLLER ..............................................................1-13

CONFIRMATION AND ADJUSTMENT OF AUDIO/CONTROL HEAD .

2-2

TAPE RUNNING ADJUSTMENT(X-VALUE ADJUSTMENT) .

2-3

ELECTRICAL ADJUSTMENTS ...............................................1-15

1. BASIC ADJUSMENT ............................................................ 1-15

1-1 SWITCHING POINT ........................................................ 1-15

ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE ............

IC DESCRIPTIONS ..................................................................1-16

SERVO TIMING CHART .......................................................... 1-19

MECHANISM TIMING CHART................................................. 1-20

TROUBLE SHOOTING GUIDE ................................................1-21

POWER DOES NOT TURN ON ............................................ 1-21

POWER SHUTS OFF ............................................................1-22

AUDIO SHAKES ....................................................................1-23

1-1

CASSETTE TAPE IS NOT ACCEPTED................................. 1-24

FF/REW DO NOT WORK ......................................................1-25

WHEN INSERTING CASSETTE, IT EJECTS IMMEDIATELY..

TAPE LOADING IS OK, BUT UNLOADS IMMEDIATELY ...... 1-26

PLAYBACK PICTURE JITTERS HORIZONTALLY................ 1-27

PLAYBACK PICTURE SHAKES............................................ 1-27

AUTO TRACKING DOES NOT OPERATE ............................ 1-28

WHEN PLAYBACK, FAST FORWARD OR REWIND MODE IS ACTIVATED, UNIT STOPS IMMEDIATELY ..

PLAYBACK PICTURE JITTERS VERTICALLY ..................... 1-29

NO PLAYBACK PICTURE .....................................................1-30

NO PICTURE DURING PLAYBACK...................................... 1-31

NO COLOR DURING SELF RECORDING AND PLAYBACK.

CYLINDER NOT ROTATING DURING PLAYBACK AND RECORDING ..

PLAYBACK PICTURE NOISY(EVEN AFTER CLEANING HEADS) .

1-4

NO NORMAL AUDIO ON PLAYBACK ................................... 1-33

1-5

CAPSTAN DD MOTOR NOT ROTATING ..............................1-34

AUDIO CAN NOT BE RECORDED .......................................1-35

CASSETTE IN AND DOWN, UNIT HAS NO FUNCTIONS....1-36

RECORDING MECHANISM WORKS, BUT NO VIDEO RECORDED FROM INPUT JACK OR TUNER ..

NO E-E (NO VIDEO FROM TUNER)..................................... 1-38

1-6

NO E-E AUDIO (MONO)........................................................ 1-39

NO TUNER AUDIO (MONO).................................................. 1-40

1-7 1-7

CHARTS AND DIAGRAMS

INTERCONNECTION DIAGRAM ............................................ 2-1

Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM ..........2-3

SYSTEM CONTROL/SERVO SCHEMATIC DIAGRAM ..........2-5

POWER SCHEMATIC DIAGRAM ...........................................2-7

1-11

OPERATION/DISPLAY SCHEMATIC DIAGRAM.................... 2-9

TUNER SCHEMATIC DIAGRAM........................................... 2-11

1-11

Hi-Fi/DEMODULATOR SCHEMATIC DIAGRAM...................2-13

PRINTED CIRCUIT BOARDS SYSCON/BOT .......................2-15

WAVEFORMS .......................................................................2-18

Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM .................2-19

1-12

SYSTEM CONTROL/SERVO BLOCK DIAGRAM .................2-21

TUNER BLOCK DIAGRAM.................................................... 2-23

HI-FI/DEMODULATOR BLOCK DIAGRAM ...........................2-25

OPERATION BLOCK DIAGRAM ...........................................2-27

POWER BLOCK DIAGRAM ..................................................2-27

PARTS LIST

3.1 PACKING AND ACCESSORY ASSEMBLY<M1> ................ 3-1

1-14

3.2 FINAL ASSEMBLY<M2>...................................................... 3-2

1-14

3.3 MECHANISM ASSEMBLY<M4> .......................................... 3-4

3.4 ELECTRICAL PARTS LIST .................................................. 3-7

SYSCON BOARD ASSEMBLY<03> ........................................ 3-7

BOT BOARD ASSEMBLY<07>...............................................3-10

1-15

REFERENCE

SEMICONDUCTOR BASE CONNECTIONS.......................... 4-1

GENERAL SPECIFICATIONS[HR-A60UC] .............................4-2

1-25

1-28

1-31 1-32 1-32

1-37

Important Safety Precautions

cut close to connector

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 com-

ply 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.

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).

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

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.

Power cord

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.4

(3) Align the lengths of the wires to be connected. Insert

the wires fully into the connector.

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.

1.25

2.0

5.5

Fig.6

(5) Check the four points noted in Fig.7.

Not easily pulled free

Wire insulation recessed

more than 4 mm

Fig.7

Crimping tool

Crimped at approx. center

of metal sleeve

Conductors extended

S40888-01

Chassis

Power cord, primary wire

Region USA & Canada Europe & Australia

Grounding Impedance (Z)

Z 0.1 ohm Z 0.5 ohm

≤ ≤

AC inlet

Earth pin

Exposed accessible part

Milli ohm meter

Grounding Specifications

Externally exposed accessible part

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.

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.

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.

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 R 10 MΩ/500 V DC

Region Load Z

Insulation Resistance (R)

≤

R 1 MΩ/500 V DC

≥≥

1 MΩ R 12 MΩ/500 V DC

≤

Table 1 Specifications for each region

Dielectric Strength

AC 1 kV 1 minute AC 1.5 kV 1 miute AC 1 kV 1 minute

AC 3 kV 1 minute AC 1.5 kV 1 minute

(Class 2) (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)

a, b, cLeakage Current (i)AC Line Voltage

100 V

110 to 130 V

110 to 130 V 220 to 240 V

Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.

Japan

USA & Canada

Europe & Australia

Table 2 Leakage current specifications for each region

1 kΩ

0.15 µF

1.5 kΩ

2 kΩ

50 kΩ

≤

i 1 mA rms Exposed accessible parts

≤

i 0.5 mA rms

≤

i 0.7 mA peak

≤

i 2 mA dc

≤

i 0.7 mA peak

≤

i 2 mA dc

Exposed accessible parts

Antenna earth terminals

Other terminals

S40888-01

DISASSEMBLY INSTRUCTIONS

REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS

1-1:

TOP CABINET AND FRONT CABINET (Refer to Fig. 2-1)

Remove the 4 screws 1.

Remove the Top Cabinet in the direction of arrow (A).

Unlock the 7 supports 2.

Remove the Front Cabinet in the direction of arrow (B).

Top Cabinet

(A)

Front Cabinet

(B)

1-2: FLAP (Refer to Fig. 1-2)

1.2.Open Flap to 90˚ and flex in direction of arrow (A), at the same time slide in direction of arrow (B). Then lift in direction of arrow (C).

(C)

Fig. 1-1

(A)

1-3: DECK CHASSIS (Refer to Fig. 1-3)

Remove the screw 1.

Remove the 2 screws 2.

Unlock the 3 supports 3.

Remove the BOT PCB in the direction of arrow (A).

Disconnect the following connectors: (CP1001, CP4001, CP4002 and CP4003).

Remove the Deck Chassis in the direction of arrow (B).

Deck Chassis

(B)

CP4003

CP4001

(A)

BOT PCB

CP4002

Bottom Plate

CP1001

1-4: SYSCON PCB (Refer to Fig. 1-4)

Remove the screw 1.

Remove the screw 2.

Remove the 2 screws 3.

Remove the Syscon PCB in the direction of arrow.

Fig. 1-3

(B)

Flap

Fig. 1-2

Syscon PCB

Bottom Plate

Fig. 1-4

1-1

DISASSEMBLY INSTRUCTIONS

2. REMOVAL OF VCR DECK PARTS

2-1: TOP BRACKET (Refer to Fig. 2-1)

Extend the 2 supports 1.

1. Slide the 2 supports 2 and remove the Top Bracket.

NOTE

After the installation of the Top Bracket, bend the support

1. 1 so that the Top Bracket is fixed.

Top Bracket

Main Chassis

2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2)

Move the Cassette Holder Ass'y to the front side.

Push the Locker R to remove the Cassette Side R.

Remove the Cassette Side L.

Cassette Side R

Main Chassis

Locker R

Fig. 2-1

NOTE

In case of the Locker R installation, check if the one

1. position of Fig. 2-3-B are correctly locked. When you install the Cassette Side R, be sure to move

2. the Locker R after installing.

Locker R

Check if this position

Cassette Side R

is locked.

2-4: LINK UNIT (Refer to Fig. 2-4)

Set the Link Unit to the Eject position.

Unlock the support 1.

Remove the (A) side of the Link Unit first, then remove the (B) side.

Main Chassis

Link Unit

Fig. 2-3-B

Link Unit

Cassette Side L

Main Chassis

2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A)

Remove the Locker Spring.

Unlock the 4 supports 1 and then remove the Cassette Side L/R.

Unlock the support 2 and then remove the Locker R.

Locker Spring

Cassette Side R

Cassette Holder

Locker R

Cassette Side L

Fig. 2-3-A

Fig. 2-2

(A)

(B)

Link Unit

Main Chassis

2-5: LINK LEVER/FLAP LEVER/SENSOR COVER R

(Refer to Fig. 2-5)

Unlock the support 1.

Remove the Sensor Cover R.

Extend the support 2.

Remove the Link Lever.

Remove the Flap Lever.

Flap Lever

Sensor Cover R

Link Lever

Fig. 2-4

Fig. 2-5

1-2

DISASSEMBLY INSTRUCTIONS

2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A)

Remove the screw 1.

Remove the Loading Motor.

Remove the Worm.

Loading Motor

Worm

Main Chassis

• Screw Torque: 3 ± 0.5kgf•cm

Fig. 2-6-A

NOTE

In case of the Worm installation, check if the value of the Fig. 2-6-B is correct.

In case of the Loading Motor installation, hook the wire on the Cassette Opener as shown Fig. 2-6-C.

When installing the wires between Capstan DD Unit and Loading Motor, connect them correctly as shown Fig. 2-6-D.

19.2 ± 0.1mm

2-7: TENSION ASS’Y (Refer to Fig. 2-7-B)

Turn the Pinch Roller Cam clockwise so that the Tension

1. Holder hook is set to the position of Fig. 2-7-A to move the T ension Arm Ass’y .

Remove the Tension Spring.

Unlock the 2 supports 1 and remove the Tension Band.

Unlock the support 2 and remove the Tension Arm Ass’y.

Unlock the support 3 and remove the Tension Connect.

Float the hook 4 and turn it clockwise then remove the Tension Holder.

T ension Arm Ass’y

Fig. 2-7-A

Tension Connect

Tension Spring

Tension Holder

Tension Band

T ension Arm Ass’y

Loading Motor

Safety surface for pressing of the insert.

Pink

White

Fig. 2-6-B

Loading Motor

Cassette Opener

Fig. 2-6-C

Capstan DD Unit

Fig. 2-6-D

Fig. 2-7-B

NOTE

In case of the Tension Band installation, note the direction of the installation. (Refer to Fig. 2-7-C)

In case of the Tension Band installation, install correctly as Fig. 2-7-D.

In case of the Tension Connect installation, install as the circled section of Fig. 2-7-E.

Tension Connect

Tension Band

Fig. 2-7-C

1-3

[OK]

[NG]

Tension Connect

DISASSEMBLY INSTRUCTIONS

NOTE

Take care not to damage the gears of the S Reel and T

Tension Band

Fig. 2-7-D

Reel.

The Polyslider Washer may be remained on the back of the reel.

Take care not to damage the shaft.

Do not touch the section “A” of S Reel and T Reel. (Use gloves.) (Refer to Fig. 2-9-A) Do not adhere the stains on it.

When you install the reel, clean the shaft and grease it (FG-84M). (If you do not grease, noise may be heard in FF/REW mode.)

After installing the reel, adjust the height of the reel.

(Refer to MECHANICAL ADJUSTMENT)

Main Chassis

Fig. 2-7-E

2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A)

Remove the T Brake Spring.

1. Turn the T Brake Arm clockwise and bend the hook

2. section to remove it. Unlock the 2 supports 1 and remove the T Brake Band.

T Brake Band

Hook section

T Brake Arm

T Brake Spring

Fig. 2-8-A

NOTE

1. In case of the T Brake Band installation, install correctly as Fig. 2-8-B.

Idler Gear

Idler Arm Ass’y

S Reel

(A)

(B)

T Reel

(A)

Fig. 2-9-A

NOTE

1.2.In case of the S Reel and T Reel installation, check if the correct parts are installed. (Refer to Fig. 2-9-B) In case of the Idler Arm Ass’y installation, install correctly as Fig. 2-9-C. And also set it so that the section “B” of Fig. 2-9-A is placed under the Main Chassis tab.

[OK]

T Brake Band

[NG]

T Brake Band

T Brake Arm

Fig. 2-8-B

2-9: S REEL/T REEL/IDLER ARM ASS’Y/IDLER GEAR

(Refer to Fig. 2-9-A)

Remove the S Reel and T Reel.

Remove the 2 Polyslider Washers 1.

Remove the Idler Arm Ass’y and Idler Gear.

1-4

[OK]

[NG]

Clutch Gear

Big Hole (S Reel)

Small Hole (T Reel)

Fig. 2-9-B

Idler Arm Ass’y

Fig. 2-9-C

DISASSEMBLY INSTRUCTIONS

2-10: CASSETTE OPENER/PINCH ROLLER BLOCK/P5

ARM ASS’Y (Refer to Fig. 2-10-A)

1.2.Unlock the support 1 and remove the Cassette Opener. Remove the Pinch Roller Block and P5 Arm Ass’y.

Cassette Opener

Pinch Roller Block

P5 Arm Ass’y

Main Chassis

Fig. 2-10-A

NOTE

1.2.Do not touch the Pinch Roller. (Use gloves.) In case of the Pinch Roller Block and the Pinch Roller Cam installation, install correctly as Fig. 2-10-B.

Pinch Roller Block

P5 Arm Ass’y

Can be seen the hole of the Main Cam.

Can be seen the hole of the Pinch Roller Cam.

Fig. 2-10-B

2-11: A/C HEAD (Refer to Fig. 2-11-A)

Remove the screw 1.

Remove the A/C Head Base.

Remove the 3 screws 2.

Remove the A/C Head and A/C Head Spr ing.

NOTE

Do not touch the A/C Head. (Use gloves.)

When you install the A/C Head Spring, install as shown in Fig. 2-11-B.

When you install the A/C Head, tighten the screw (1) first, then tighten the screw (2), finally tighten the screw (3).

(3)

(1)

(2)

A/C Head

Spring Position

Fig. 2-11-B

2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12)

1.2.Remove the screw 1. Remove the FE Head.

FE Head

• Screw Torque: 5 ± 0.5kgf•cm

• The FE Head is not installed on the Video Cassette Player.

Fig. 2-12

2-13: CYLINDER UNIT ASS’Y (Refer to Fig. 2-13)

Disconnect the following connector: (CD2001)

Remove the 3 screws 1.

Remove the Cylinder Unit Ass’y.

NOTE

1. When you install the Cylinder Unit Ass’y, tighten the screws from (1) to (3) in order while pulling the Ass’y toward the left front direction.

CD2001

Cylinder Unit Ass’y

• Screw Torque: 5 ± 0.5kgf•cm (Screw 1)

A/C Head Spring

A/C Head Base

Fig. 2-11-A

• Screw Torque: 3 ± 0.5kgf•cm

(3)

(2)

(1)

Fig. 2-13

1-5

DISASSEMBLY INSTRUCTIONS

2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A)

Remove the Capstan Belt.

Remove the 3 screws 1.

Remove the Capstan DD Unit.

Capstan Belt

Capstan DD Unit

• Screw Torque: 4 ± 0.5kgf•cm

Fig. 2-14-A

NOTE

1. In case of the Capstan DD Unit installation, apply the silicon bond (TSE3843-W) on the position Fig. 2-14-B correctly. (If no silicon bond applied, abnormal noise will be heard on the deck operation.)

(Refer to Fig. 2-14-B, C)

Applied position of silicon bond

2-15: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR

(Refer to Fig. 2-15-A)

1.2.Remove the E-Ring 1, then remove the Main Cam. Remove the E-Ring 2, then remove the Pinch Roller Cam and Joint Gear.

Main Cam

Pinch Roller Cam

Joint Gear

Fig. 2-15-A

NOTE

1. In case of the Pinch Roller Cam and Main Cam installation, install them as the circled section of Fig. 2-15-B so that the each markers are met. (Refer to Fig. 2-15-B) And also can be seen the Main Chassis hole through the Main Cam maker hole.

Pinch Roller Cam

Marker

Main Cam

1-6

Capstan DD Unit

Be careful not to apply the silicon bond to the Pinch Roller.

Silicon Bond

Main Chassis

Fig. 2-14-B

Fig. 2-14-C

Fig. 2-15-B

2-16: LOADING GEAR S/T UNIT (Refer to Fig. 2-16-A)

1.2.Remove the E-Ring 1 and remove the Main Loading Gear. Remove the Main Rod, Tension Lever, Loading Arm S Unit and Loading Arm T Unit.

Main Rod

Tension Lever

Main Loading Gear

Loading Arm T Unit

Loading Arm S Unit

Fig. 2-16-A

DISASSEMBLY INSTRUCTIONS

NOTE

1. When you install the Loading Arm S Unit, Loading Arm T Unit and Main Loading Gear, align each marker. (Refer

to Fig. 2-16-B)

Marker

Main Loading Gear

Marker

Loading Arm T Unit Loading Arm S Unit

Fig. 2-16-B

2-17: CLUTCH ASS’Y/RING SPRING/CLUTCH LEVER/

CLUTCH GEAR (Refer to Fig. 2-17-A)

Remove the Polyslider Washer 1.

Remove the Clutch Ass’y and Ring Spring.

Remove the Clutch Lever.

Remove the Coupling Gear, Coupling Spring and Clutch Gear.

Clutch Ass’y

Ring Spring

Coupling Gear

Coupling Spring

Clutch Gear

Clutch Lever

2-18: CASSETTE GUIDE POST/INCLINED BASE S/T

UNIT/P4 CAP (Refer to Fig. 2-18-A)

Remove the P4 Cap.

Unlock the support 1 and remove the Cassette Guide Post.

Remove the Inclined Base S/T Unit.

Remove the screw 2.

Remove the LED Reflector.

Cassette Guide Post

Inclined Base T Unit

P4 Cap

Fig. 2-18-A

Inclined Base S Unit

LED Reflector

NOTE

Do not touch the roller of Guide Roller.

In case of the P4 Cap installation, install it with parallel for “A” and “B” of Fig. 2-18-B.

In case of the Cassette Guide Post installation, install correctly as the circled section of Fig. 2-18-C.

“A” “B”

Fig. 2-17-A

NOTE

1. In case of the Clutch Ass’y installation, install it with inserting the spring of the Clutch Ass’y into the dent of the Coupling Gear. (Refer to Fig. 2-17-B)

Clutch Ass’y

Coupling Gear

Fig. 2-17-B

P4 Cap

[OK]

Cassette Guide Post

[NG]

Cassette Guide Post

Cassette Opener

Fig. 2-18-B

Fig. 2-18-C

1-7

A/C ACC AE AFC AFT AFT DET AGC AMP ANT A.PB APC ASS’Y AT AUTO A/V

BGP BOT BPF BRAKE SOL BUFF B/W

C CASE CAP CARR CH CLK CLOCK (SY-SE) COMB CONV CPM CTL CYL CYL-M CYL SENS

DATA (SY-CE) dB DC DD Unit DEMOD DET DEV

E EF EMPH ENC ENV EOT EQ EXT

F FBC FE FF FG FL SW FM FSC FWD

GEN GND

H.P.F

KEY TO ABBREVIA TIONS

Audio/Control

Automatic Color Control

Audio Erase

Automatic Frequency Control

Automatic Fine Tuning

Automatic Fine Tuning Detect

Automatic Gain Control

Amplifier

Antenna

Audio Playback

Automatic Phase Control

Assembly

All Time

Automatic

Audio/Video

Burst Gate Pulse

Beginning of Tape

Bandpass Filter

Brake Solenoid

Buffer

Black and White

Capacitance, Collector

Cassette

Capstan

Carrier

Channel

Clock

Clock (Syscon to Servo)

Combination, Comb Filter

Converter

Capstan Motor

Control

Cylinder

Cylinder-Motor

Cylinder-Sensor

Data (Syscon to Servo)

Decibel

Direct Current

Direct Drive Motor Unit

Demodulator

Detector

Deviation

Emitter

Emitter Follower

Emphasis

Encoder

Envelope

End of Tape

Equalizer

External

Fuse

Feed Back Clamp

Full Erase

Fast Forward, Flipflop

Frequency Generator

Front Loading Switch

Frequency Modulation

Frequency Sub Carrier

Forward

Generator

Ground

High Pass Filter

H.SW Hz IC

IF IND INV KIL

LED LIMIT AMP LM, LDM LP L.P.F LUMI. M

MAX MINI MIX MM MOD MPX MS SW NC

NR OSC

OPE PB

PB CTL PB-C PB-Y PCB P. CON PD PG P-P R

REC REC-C REC-Y REEL BRK REEL S REF REG REW REV, RVS RF RMC RY S. CLK

S. COM S. DATA SEG SEL SENS SER SI SIF SO SOL SP STB SW

Head Switch

Hertz

Integrated Circuit

Intermediate Frequency

Indicator

Inverter

Killer

Left

Light Emitting Diode

Limiter Amplifier

Loading Motor

Long Play

Low Pass Filter

Luminance

Motor

Maximum

Minimum

Mixer, mixing

Monostable Multivibrator

Modulator, Modulation

Multiplexer, Multiplex

Mecha State Switch

Non Connection

Noise Reduction

Oscillator

Operation

Playback

Playback Control

Playback-Chrominance

Playback-Luminance

Printed Circuit Board

Power Control

Phase Detector

Pulse Generator

Peak-to Peak

Right

Recording

Recording-Chrominance

Recording-Luminance

Reel Brake

Reel Sensor

Reference

Regulated, Regulator

Rewind

Reverse

Radio Frequency

Remote Control

Relay

Serial Clock

Sensor Common

Serial Data

Segment

Select, Selector

Sensor

Search Mode

Serial Input

Sound Intermediate Frequency

Serial Output

Solenoid

Standard Play

Serial Strobe Switch

1-8

SYNC SYNC SEP

TR TRAC TRICK PB TP

UNREG

V VCO VIF VP V. P B VR V.REC VSF VSR VSS V-SYNC VT

X’TAL

Y/C

KEY TO ABBREVIA TIONS

Synchronization

Sync Separator, Separation

Transistor

Tracking

Trick Playback

Test Point

Unregulated

Volt

Voltage Controlled Oscillator

Video Intermediate Frequency

Vertical Pulse, Voltage Display

Video Playback

Variable Resistor

Video Recording

Visual Search Fast Forward

Visual Search Rewind

Voltage Super Source

Vertical-Synchronization

Voltage Tuning

Crystal

Luminance/Chrominance

1-9

PREVENTIVE CHECKS AND SERVICE INTER VALS

The following standard table depends on environmental conditions and usage. Parts replacing time does not mean the life span for individual parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. The following list means standard hours, so the checking hours depends on the conditions.

Time

Parts Name

Audio Control Head

Full Erase Head

(Recorder only)

Capstan Belt

Pinch Roller

Capstan DD Unit

Loading Motor

Tension Band T Brake Band

Clutch Ass’y

Idler Arm Ass’y

Capstan Shaft

Tape Running Guide Post

Cylinder Unit : Clean

: Check it and if necessary, replace it.

500

hours

1,000 hours

CLEANING

NOTE

After cleaning the heads with isopropyl alcohol, do not run a tape until the heads dry completely. If the heads are not completely dry and alcohol gets on the tape, damage may occur.

1. AUDIO CONTROL HEAD

Clean the Audio Control Head with the cotton stick soaked by alcohol. Clean the full erase head in the same manner. (Refer to the figure below.)

1,500 hours

2,000 hours

2. TAPE RUNNING SYSTEM

When cleaning the tape transport system, use the gauze moistened with isopropyl alcohol.

3. CYLINDER

Wrap a piece of chamois around your finger. Dip it in isopropyl alcohol. Hold it to the cylinder head softly. Turn the cylinder head counterclockwise to clean it (in the direction of the arrow). (Refer to the figure below.)

NOTE

Do not exert force against the cylinder head. Do not move the chamois upward or downward on the head. Use the chamois one by one.

2,500 hours

Notes

Clean those parts in contact with the tape.

Clean the rubber, and parts which the rubber touches.

Replace when rolling becomes abnormal.

Clean the Head

1-10

Audio Control Head

Cylinder Head

SERVICE MODE LIST

This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.

Method Operations

Make the short circuit between the test point of SERVICE and the GND.

The BOT, EOT, and the Reel Sensor do not work and the deck can be operated without a cassette tape. Refer to the “PREPARATION FOR SERVICING”

<NOTE> WHEN "N" IS ALWAYS BEING DISPLAYED ON THE TV MONITOR.

(REMOTE CONTROLLER FORMAT)

This product is usable the remote controller which is used by VHS of the other brand. If "N" is always being displayed on the TV monitor, can not control from provided remote controller since this product is other brand format.

• How to return a JVC format.

Turn off the power of the set and push the CHANNEL+ button and the REC button of the set simultaneously.

SERVICING FIXTURES AND TOOLS

VHS Alignment Tape MHP

Torque Tape PUJ48076-2

VHS Alignment Tape MHP-L

Short Jumper

Torque Gauge PUJ48075-2

Roller Driver PTU94002-2

X-JG153 X Value Adjustment

MECHANISM ADJUSTMENT PARTS LOCATION GUIDE

Tension Connect

1. T ension Arm

2. Guide Roller

3. Audio/Control Head

4. X value adjustment driver hole

5. P4 Post

T Brake Spring

7. T Reel

8. S Reel

9. Adjusting section for the Tension Arm position

10.

Screwdriver

8910

1-11

MECHANICAL ADJUSTMENTS

TAPE REMOVAL METHOD AT NO POWER SUPPLY

Remove the Top Cabinet and Front Cabinet.

(Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.)

Remove the screw 1 of the Deck Chassis and remove the Loading Motor.

Rotate the Pinch Roller Cam in the direction of the arrow by hand to slacken the Video Tape.

Rotate the Clutch Ass'y either of the derections to wind the Video Tape in the Cassette Case.

Repeat the above step 3~4. Then take out the Video Cassette from the Deck Chassis. Be careful not to scratch on the tape.

Loading Motor

Screw 1

Capstan DD Unit

Pinch Roller Cam

Main Cam

Main Chassis (Front Side)

Clutch Ass'y

1. CONFIRMATION AND ADJUSTMENT

Read the following NOTES before starting work.

• Place an object which weighs between 450g~500g on the Cassette Tape to keep it steady when you want to make the tape run without the Cassette Holder. (Do not place an object which weighs over 500g.)

1-1: CONFIRMATION AND ADJUSTMENT OF TENSION

POST POSITION

Set to the PLAY mode.

Adjust the adjusting section for the Tension Arm position so that the Tension Arm top is within the standard line of Main Chassis.

While turning the S Reel clockwise, confirm that the edge of the Tension Arm is located in the position described above.

Standard line of Main Chassis

T ension Arm

0.5mm (Adjusting range)

Adjusting section for the Tension Ar m position

Fig. 1-1-A

1-12

Tension Band

The Tension Arm top will move to the inside direction of the Main Chassis.

Bend

The Tension Arm top will move to the outside direction of the Main Chassis.

Fig. 1-1-B

1-2: CONFIRMATION OF PLAYBACK TORQUE AND

BACK TENSION TORQUE DURING PLAYBACK

After confirmation and adjustment of Tension Post position (Refer to item 1-1), load the cassette type torque tape and set to the PLAY mode.

Confirm that the right meter of the torque tape indicates 50~90gf•cm during playback in SP mode.

Confirm that the left meter of the torque tape indicates 25~40gf•cm during playback in SP mode.

1-3: CONFIRMATION OF VSR TORQUE

1.2.Install the Torque Gauge on the S Reel. Set to the Picture Search (Rewind) mode. (Refer to Fig.1-2-B) Then, confirm that it indicates 120~180gf•cm.

NOTE

Install the Torque Gauge on the reel disk firmly. Press the REW button to turn the reel disk.

MECHANICAL ADJUSTMENTS

1-4: CONFIRMATION OF REEL BRAKE TORQUE

(S Reel Brake) (Refer to Fig. 1-2-B)

Once set to the Fast Forward mode then set to the Stop mode. While, unplug the AC cord when the Pinch Roller Block is on the position of Fig. 1-2-A.

Move the Idler Ass’y from the S Reel.

Install the Torque Gauge on the S Reel. Turn the Torque Gauge clockwise.

Then, confirm that it indicates 60~100gf•cm.

(T Reel Brake) (Refer to Fig. 1-2-B)

Once set to the Fast Forward mode then set to the Stop mode. While, unplug the AC cord when the Pinch Roller Block is on the position of Fig. 1-2-A.

Move the Idler Ass’y from the T Reel.

Install the Torque Gauge on the T reel. Turn the Torque Gauge counterclockwise.

Then, confirm that it indicates 30~50gf•cm.

The position at FF mode.

Pinch Roller Block

Stop at this position.

The position at STOP mode.

Capstan DD Unit

Cassette Opener

2. CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM

Tape Running Mechanism is adjusted precisely at the factory. Adjustment is not necessary as usual. When you replace the parts of the tape running mechanism because of long term usage or failure, the confirmation and adjustment are necessary.

2-1: GUIDE ROLLER

Playback the VHS Alignment Tape (MHP).

Connect CH-1 of the oscilloscope to TP4001 (Envelope) and CH-2 to TP1002 (SW Pulse).

Trigger with SW Pulse and observe the envelope. (Refer

to Fig. 2-1-A)

When observing the envelope, adjust the Roller Driver (PTU94002-2) slightly until the envelope will be flat. Even if you press the Tracking Button, adjust so that flatness is not moved so much. (Refer to Fig. 2-1-B)

Adjust so that the A : B ratio is better than 3 : 2 as shown in Fig. 2-1-C, even if you press the Tracking Button to move the envelope (The envelope wavefor m will begin to decrease when you press the Tracking Button).

Adjust the PG shifter during playback.

(Refer to the ELECTRICAL ADJUSTMENTS)

NOTE

After adjustment, confirm and adjust A/C head.

(Refer to item 2-2)

Cassette Holder Ass’y

Torque Gauge

S Reel

T Reel

Fig. 1-2-A

Fig. 1-2-B

NOTE

If the torque is out of the range, replace the following parts.

Check item

1-3 1-4

S Reel side:

Replacement Part

Idler Ass’y/Clutch Ass’y

S Reel/Tension Band/Tension Connect/Tension Arm Ass’y

T Reel side:

T Reel/T Brake Band//T Brake Spring/T Brake Arm

CH-1 Envelope (TP4001)

CH-2 SW Pulse (TP1002)

Improper Proper

(a) Guide roller

(b) P4 Cap

Entrance

Max

CH-1

CH-2

Track

A : B ≥ 3 : 2

Fig. 2-1-A

Fig. 2-1-B

Exit

MaxA B

Fig. 2-1-C

1-13

MECHANICAL ADJUSTMENTS

2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/

CONTROL HEAD

When the Tape Running Mechanism does not work well, adjust the following items.

Playback the VHS Alignment Tape (MHP).

Confirm that the reflected picture of stamp mark is appeared on the tape prior to P4 Post as shown in Fig. 2- 2-A. a)

When the reflected picture is distorted, turn the screw 1 clockwise until the distortion is disappeared.

When the reflected picture is not distorted, turn the screw 1 counterclockwise until little distortion is appeared, then adjust the a).

Turn the screw 2 to set the audio level to maximum.

Confirm that the bottom of the Audio/ Control Head and the bottom of the tape is shown in Fig. 2-2-C. c)

When the height is not correct, turn the screw 3 to adjust the height. Then, adjust the 1~3 again.

Audio/Control Head

Reflected picture of Stamp Mark

P4 Cap

2-3: TAPE RUNNING ADJUSTMENT

(X VALUE ADJUSTMENT)

Confirm and adjust the position of the Tension Post.

(Refer to item 1-1)

Adjust the Guide Roller. (Refer to item 2-1)

Confirm and adjust the Audio/Control Head.

(Refer to item 2-2)

Connect CH-1 of the oscilloscope to TP1002, CH-2 to TP4001 and CH-3 to HOT side of Audio Out Jack.

Playback the VHS Alignment Tape (MHP).

Set the X Value adjustment driver (X-JG153) to the 4 of Fig. 2-2-B. At first, turn the Audio/Control Head position fully toward the capstan side. Then adjust X Value to turn it back gradually toward the cylinder side and stop on the second peak point position of the envelope.

Play MHP

Waveform output

X-value adjustment point

Drum side Control head position Capstan side

Audio/Control Head

Tape

Stamp Mark

Fig. 2-2-A

Fig. 2-2-B

0.25±0.05mm

Fig. 2-2-C

Maximum

Perform tracking operation and confirm the envelope is maximum on the tracking center position.

Playback the VHS Alignment Tape (MHP-L). Perform tracking operation and confirm the envelope is

10. maximum on the tracking center position. If envelope is not maximum, should be fine-tune the X-VALUE.

Fig. 2-3

1-14

ELECTRICAL ADJUSTMENTS

Read and perform this adjustment when repairing the circuits or replacing electrical parts or PCB assemblies.

1. BASIC ADJUSTMENT

CAUTION

• When you exchange IC and Transistor for a heat sink, apply the silicon grease (YG6260M) on the contact section of the heat sink. Before applying new silicon grease, remove all the old silicon grease. (Old grease may cause damages to the IC and Transistor.)

1-1: SWITCHING POINT CONDITIONS

MODE-PLAYBACK Input Signal-Alignment Tape (MHP)

INSTRUCTIONS

Connect CH-1 on the oscilloscope to TP1002 and CH-2

1. to TP4201. Playback the alignment tape. (MHP)

2. Adjust the VR1001 until the waveform of the oscilloscope

3. measures 6.5 ± 0.5(H) at both leading and trailing edges.

(Refer to Fig. 1-1-A, B)

CH-2

6.5H

CH-1

Fig. 1-1-A

CH-2

CH-1

6.5H

Fig. 1-1-B

ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (Connector Connections)

AC IN

J4201

CD501

TP4201 (SWITCHING POINT)

VR1001

TU6001

CP4003

TP4001 (ENVELOPE)

TP1001 (SERVICE MODE)

CD4001

CP4002

FE HEAD

TP1002 (HEAD SWITCHING PULSE)

AC HEAD

BOT PCB (COMPONENT SIDE)

CP1002

CP1004

CP1001

CD1503

CAPSTAN DD UNIT

J4203

J4204

V651

OS651

J4205

SYSCON PCB (COMPONENT SIDE)

1-15

IC DESCRIPTIONS

VCR PCB OEC0131A (IC1001)

No. PORT PIN NAME I/O DESCRIPTION

1 SVSS SVSS - Ground. 2 CTLREF CTLREF Output terminal for CTL amp REF (1/2 SVCC) 3 CTL(+) CTL(+) Input and output terminal of Control Head. 4 CTL(-) CTL(-) Input terminal of Control Head. 5 CTLBIAS CTLBIAS Output terminal for bias. 6 CTLFB CTLFB Input terminal for CTL feedback 7 CTLAMP(O) CTLAMP(O) Output terminal for amp out. 8 CTLSMT(I) CTLSMT(I) Input terminal f or CTL shumit amp .

9 CFG CAP FG Input terminal for CAPSTAN FG signal detection. 10 SVCC SVCC + 5V (Servo) 11 AFCPC AFCPC AFC oscilator (external circuit). 12 AFCOSC AFCOSC AFC oscilator (external circuit). 13 AFCLPF AFCLPF LPF connection for AFC OSC. 14 CSYNC/HSYNC CSYNC OUT Output terminal for composite SYNC. 15 VLPF/VSYNC VSYNC IN Input terminal for composite SYNC.(from 14pin) 16 CVIN2 CVIN2 IN Composite Video input terminal.(for data slicer) 17 CVIN1 CVIN1 IN Composite Video input terminal.(for OSD) 18 OSDVCC OSDVCC - + 5V 19 CVOUT CVOUT OUT Composite Video output.(with OSD) 20 OVSS OVSS - Ground. 21 4/2FSCOUT 4/2FSCOUT OUT 4 FSC pulse. 22 4/2FSCIN 4/2FSCIN IN 4 FSC pulse. 23 AVSS AVSS - Ground. 24 ANB PG IN Input voltage from Variable Resistor of PG SHIFTER. 25 ANA AFT S.CURVE IN AFT S CURVE input for tuner. 26 AN9 EOT-H IN Tape end sensor input signal. 27 AN8 ST SELECT IN Input terminal for the judgement of voice reception condition. 28 P07/AN7 HIFI ENV IN Input terminal of HiFi RF envelope. 29 P06/AN6 BOT-H IN Tape start sensor input signal. 30 P05/AN5 V ENV IN Input terminal of video RF envelope. 31 P04/AN4 MS SEN-B IN Input terminal of mecha state sensor. 32 P03/AN3 MS SEN-A IN 33 P02/AN2 KEY-B IN Main unit key input. 34 P01/AN1 KEY-A IN 35 P00/AN0 SLOW OFFSET IN Ter minal for the offset of Slow. 36 AVCC AVCC - + 5V 37 P10/IRQ0 POWER FAIL IN Input terminal of Power fail signal. 38 P11/IRQ1 SP-L OUT Tape speed SP mode at the time of LOW. 39 P12/IRQ2 REEL-S IN Input terminal of reel sensor supply. 40 P13/IRQ3 REEL-T IN Input terminal of reel sensor take up.

1-16

IC DESCRIPTIONS

VCR PCB OEC0131A (IC1001)

No. PORT PIN NAME I/O DESCRIPTION

41 P14/IRQ4 EP-L OUT Tape speed EP mode at the time of LOW. 42 P15/IRQ5 (JUST CLOCK) OUT Not used. 43 P16/IC REM IN IN Receive the remote control signal. 44 P17/TMOW NC OUT Not used. 45

P67/RP7/TMB

CAP FWD-L OUT Capstan forward and backward command.

P66/RP6/ADTRG

47 P65/RP5 GRID1/T-REC LED OUT

48 P64/RP4 GRID2/REC LED OUT

49 P63/RP3 GRID3/TV/VCR LED OUT

50 P62/RP2 GRID4/POWER LED OUT

51 P61/RP1 GRID5 OUT LEM(LED Module) control terminal.

52 P60/RP0 SEG1/LEM SEL IN/OUT

53 P37/TM0 SEG2/REAR_IN_SEL IN/OUT

54 P36/BUZZ SEG3 OUT 55 P35 SEG4 OUT 56 VCC VCC - Power of CPU. 57 VSS VSS - Ground. 58 P27 SEG5 OUT 59 P26 SEG6 OUT 60 P25 SEG7 OUT 61 P24/SCL1 IIC_CLK OUT CLOCK terminal for IIC BUS communication. 62 P23/SDA1 IIC_DATA IN/OUT DATA terminal for IIC BUS communication. 63 P22/SCK1 SEG8 OUT 64 P21/SO1 SEG9/TX OUT 65 P20/SI1 SEG10/RX OUT 66 P47/RPTRG SERVICE IN Input terminal for Service Mode. 67 P46/FTOB TAB SW IN Input terminal for judge the tape if it has TAB or not. 68 P45/FTOA POWER ON-L OUT For control the user power switch ON/OFF. 69 P44/FTID POWER ON-H OUT For control the user power switch ON/OFF. 70 P43/FTIC 2/4HEAD SEL IN The initial settings of 2 head or 4 head. 71 P42/FTIB LANG SEL IN The initial settings of language select.

LDM CTL OUT Loading motor control terminal.

W/LEM : LEM(LED Module) control terminal. W/O LEM : T-REC LED light-up/put-off control output.

W/LEM : LEM(LED Module) control terminal. W/O LEM : REC/OTR LED light-up/put-off control output.

W/LEM : LEM(LED Module) control terminal. W/O LEM : TV/VCR LED light-up/put-off control output.

W/LEM : LEM(LED Module) control terminal. W/O LEM : POWER LED light-up/put-off control output.

LEM(LED Module) control terminal.And this terminal uses it for the initial setting of LEM select.

LEM(LED Module) control terminal.And this terminal uses it for the initial setting of REAR IN select.

LEM(LED Module) control terminal. LEM(LED Module) control terminal.

LEM(LED Module) control terminal. LEM(LED Module) control terminal. LEM(LED Module) control terminal.

1-17

IC DESCRIPTIONS

VCR PCB OEC0131A (IC1001)

No. PORT PIN NAME I/O DESCRIPTION

72 P41/FTIA REM SEL1 IN The initial settings of Remote control unit select. 73 P40/PWM14 REM SEL2 IN 74 FWE FWE IN FZTAT Write protect. 75 X2 X2 OUT Subclock pulse(32.768KHz) 76 X1 X1 IN

77 /RESET /RESET IN 78 OSC1 OSC1 IN Connect the main crystal(10MHz)

79 VSS VSS - Ground. 80 OSC2 OSC2 OUT Connect the main crystal(10MHz) 81 VCL VCL IN Connect the capacitor 82 MD0 MD0 IN FZTAT Write MODE. 83 P34/PWM2 AUTO CLOCK SEL OUT The initial settings of A UTO CLOCK On/Off select. 84 P33/PWM1 CAP_LIMIT OUT Switch the maximum output current of the Capstan Motor.

85 P32/PWM0 NC OUT Not used. 86 P31/SV2 VIDEO MUTE-H OUT H for at AUTO_CLOCK in POWER OFF. L for except above case.

87 P30/SV1 TV/VCR OUT H for at RF modulator ON. L for except above case. 88 P70/PPG0 AUDIO OUT MUTE OUT L for at AUDIO MUTE and POWER OFF. H for except above case. 89 P71/PPG1 RF SW OUT Switching of a RF channel. 90 P72/PPG2 A MUTE-H OUT H for at AUDIO MUTE . L for except above case. 91 P73/PPG3 V-REC ST-H OUT On control of A/V recording(Whole width erase) circuit. 92 P74/PPG4/ RP8 NC OUT Not used. 93 P75/PPG5/RP9 NC OUT Not used. 94 P76/PPG6/RPA NC OUT Not used. 95 P77/RPG7/RPB NC OUT Not used. 96 P80/YCO Y/C CLK OUT Control terminal for Y/C. (CLOCK). 97 P81/EXCAP/ YB0 Y/C DATA OUT Control terminal for Y/C.(DATA). 98 P82/EXCTL Y/C CS OUT Control terminal for Y/C. (CHIP SELECT). 99 P83/ C.ROTARY/R C.ROTARY OUT Color Rotary Control output.

100 P84/H.AMP/ SW/G H.AMP_SW OUT Switching output of Head Amp SW. 101 P85/COMP/B COMP IN

RESET will be done when the voltage goes to HIGH after the reset signal.

Comparison results input of Playback Envelope level on SP/LP

heads (4 heads). 102 P85/EZTTRG CAP_FULL OUT 103 P87/DPG CYL SPEED UP OUT Output terminal for correct cylinder during SLOW.

104 DFG D FG/PG IN Input terminal for DRUM FG and DRUM PG signal detection. 105 VIDEO_FF VIDEO H.SW OUT Output terminal of Video Head SW. 106 AUDIO_FF HI-FI H.SW OUT Output terminal of HI-FI Head SW. 107 DRMPWM DRUM PWM OUT PWM output of Cylinder control. 108 CAPPWM CAP PWM OUT PWM output of Capstan control.

1-18

Output the HIGH during the acceleration force of capstan motor.

IC DESCRIPTIONS

VCR PCB OEC0131A (IC1001)

No. PORT PIN NAME I/O DESCRIPTION

109 V_PULSE DUMMY V.SYNC OUT Virtual V Pulse output. 110 VSS VSS - Ground. 111 C.SYNC_IN C.SYNC IN Input terminal for composite SYNC. 112 VCC VCC - +5V

SERVO TIMING CHART

SYSCON PCB IC1001 (OEC0130A)

DPG 104 PIN

DFG 104 PIN

24 Cycle

H. SW. P 105 PIN

V-SYNC (E-E) 111 PIN

REC CTL (REC) 7 PIN

V-SYNC (TRICK PB) 109 PIN

• WAVEFORM CHANGES DEPENDED ON THE TAPE SPEED

CH 1

CH 2

1-19

MECHANISM TIMING CHART

Please see the list below for the operational timing and the mode sensor output of the main parts on each mechanism modes.

MECHANISM MODE UNLOAD STOP3

Mode Dealing Directions

Revolutional Angle of MAIN CAM

Moving Quantity of MAIN ROD (mm)

MODE MS-1

SENSOR

HIGH

LOW

EJECT

STBY

206.3100

180

Output

HIGH

MS-2

LOW

INCLINED BASE S/T UNIT

PINCH ROLLER BLOCK

P5 ARM ASS'Y (T BRAKE:LOW)

TENSION LEVER

TENSION ARM ASS'

(S REEL BRAKE)

VSR

S BRAKE:LOW

255

26.5

PRESS

P5-ON (T BRAKE HIGH)

BRAKE-ON

PBF.SLOW

S BRAKE:HIGH

FF/REWSTOP2

323.8303.7272.2226.4

38.53529.521.5

TENSION CONNECT

(S REEL BRAKE)

T BRAKE ARM

(T REEL BRAKE)

LUTCH LEVER

LINK UNIT

FLAP LEVER

BRAKE-ON

CLUTCH-ON

BRAKE-ON

DIRECT

PRESS

1-20

POWER DOES NOT TURN ON

TROUBLESHOOTING GUIDE

Is the voltage at pin 18, 36, 56, 82 and 112 of IC1001 about 5V?

Is the voltage at cathode

of D512 about 5V?

Check Around T501.

Yes

Check IC1001.

Check AT+5.2V line and the

check peripheral circuit.

1-21

POWER SHUTS OFF

Insert a cassette and

push PLAY button.

TROUBLESHOOTING GUIDE

Does it Power off in about

3 seconds?

Does it Power off in about

6 seconds?

Does it Power off intermittently?

Check IC1001.

Yes

Check TAPE LOADING,

LOADING BELT, MODE SENSOR,

DD MOTOR and CYLINDER MOTOR.

Check REEL SENSOR

and REEL BELT.

Check REEL SENSOR and

REEL BELT slack.

1-22

AUDIO SHAKES

TROUBLESHOOTING GUIDE

Is AUDIO HEAD scratched?

Does pin 9 of IC1001 output about 5Vp-p?

Yes

In playback, is the voltage at pin 12 of CP1001 3.0V?

Yes

Check AUDIO BLOCK.

Yes

Replace AUDIO HEAD.

Replace CAPSTAN DD.

Check IC1001.

1-23

CASSETTE TAPE IS NOT ACCEPTED

TROUBLESHOOTING GUIDE

Does WORM GEAR of CASSETTE LOADING

BLOCK activate?

Yes

When cassette is not

inserted, is the voltage at pin

29 of IC1001 5V?

Yes

When a cassette is

inserted, is the voltage between

pins 2 and 4 of CP1001

12V?

When a cassette is

inserted, is the voltage at

pin 46 of IC1001 5V?

Yes

Check WORM GEAR of

CASSETTE LOADING BLOCK.

Check LED and PHOTO SENSOR

on DECK.

Replace LOADING MOTOR.

Replace IC1001.

Yes

Check circuit of LOADING MOTOR.

1-24

FF/REW DO NOT WORK

TROUBLESHOOTING GUIDE

Is the voltage changing

at pin 43 of IC1001 when you

press FF/REW?

Yes

Check DECK MECHANISM.

WHEN INSERTING CASSETTE, IT EJECTS IMMEDIATELY

Does Another cassette go down?

Yes

Check pins 33 and 34 of IC1001 lines.

Defective CASSETTE or

CASSETTE LOADING BLOCK.

Are SW1001 and the lever of the stage set correctly?

Yes

After a CASSETTE is

inserted is the voltage at pin 67

of IC1001 LOW?

Yes

When CASSETTE is

inserted is the voltage at pin 29

of IC1001 5V?

Yes

Check IC1001.

Check Rec LEVER.

Check SW1001.

Check LOADING GEARS.

1-25

TAPE LOADING IS OK, BUT UNLOADS IMMEDIATELY

TROUBLESHOOTING GUIDE

Does CYLINDER rotate?

Yes

Does TP1002 feed

HEAD SWITCHING PULSE

signal?

Is the voltage at pins 6 and 7 of CP1001 UNREG 5V?

Yes

In playback, is the voltage

at pins 3, 8, 10 and 12 of

CP1001 about 5V?

Yes

Replace CYLINDER UNIT.

Does PG PULSE signal

appear at pin 104 of

IC1001?

Check pins 103 and 104

of IC1001 lines.

Replace CAPSTAN DD UNIT.

Yes

Check REEL SENSOR.

Yes

Replace IC1001.

1-26

PLAYBACK PICTURE JITTERS HORIZONTALLY

TROUBLESHOOTING GUIDE

Is FG Pulse output level

at pin 10 of CP1001 about 6V?

Yes

Is the voltage at pin 9 of IC1001 about 5V?

Yes

Replace CYLINDER MOTOR.

PLAYBACK PICTURE SHAKES

Replace CYLINDER MOTOR.

Replace IC1001.

Is FG Pulse output level

at pin 10 of CP1001 about 6V?

Yes

Is the voltage at pin 3 of CP1001 about 6V?

Yes

Replace CYLINDER MOTOR.

Replace IC1001.

1-27

AUTO TRACKING DOES NOT OPERATE

TROUBLESHOOTING GUIDE

By manual tracking,

does the DC level at pin 59

of IC4001 change?

Yes

In auto tracking, is the voltage at pin 30 of IC1001 more than DC1.65V?

Yes

Replace IC1001.

WHEN PLAYBACK, FAST FORWARD OR REWIND MODE IS ACTIVATED, UNIT STOPS IMMEDIATELY

Does the CTL PULSE

(about 1.0Vp-p) appear at pin 7

of IC1001?

1.0Vp-p

Yes

Check CYLINDER UNIT.

Check CONTROL HEAD.

Does CAPSTAN DD MOTOR rotate?

Yes

Does the REEL SENSOR

PULSE signal appear at pins 39

and 40 IC1001?

Yes

Check IC1001 and check

peripheral circuit.

1-28

Refer to section "CAPSTAN DD

MOTOR NOTROTATING".

Check Q1002.

TROUBLESHOOTING GUIDE

PLAYBACK PICTURE JITTERS

VERTICALLY

Does tracking noise appear in the picture?

Yes

By adjusting the manual

tracking UP/DOWN buttons, will the

noise disappear in the picture?

Yes

Are GUIDE POSTS the right height?

Yes

Is PG SHIFTER Adjustment 6.5H?

Check P/B ENVELOPE.

Adjust GUIDE POST height.

Adjust PG SHIFTER.

Yes

Is PB-Y waveform normal?

Check PB-Y circuit.

Yes

Replace IC1001.

1-29

NO PLAYBACK PICTURE

TROUBLESHOOTING GUIDE

Is E-E appearing on the Monitor TV?

Yes

Is there Video signal at pin 30 of IC4001?

Yes

Is there VIDEO signal at pin 26 of IC4001?

Yes

Is the voltage at pin 44, 52 and 68 of IC4001 5V?

Yes

Check IC4001.

Check P.CON 5V line.

Check J4203.

Check IC4001 and the peripheral circuit.

Check J4201.

1-30

NO PICTURE DURING PLAYBACK

TROUBLESHOOTING GUIDE

Is there Video signal at pin 26 of IC4001?

Yes

Is there Color signal

in Video signal at pin 26 of

IC4001?

Yes

Check J4201.

NO COLOR DURING SELF RECORDING AND PLAYBACK

Check IC4001.

Replace IC4001.

Does VIDEO signal appear at pin 30 of IC4001?

Yes

Does VIDEO signal appear at pin 26 of IC4001?

Yes

Check IC4001 and peripheral circuit.

Replace J4203.

Check VIDEO input circuit.

Change IC4001.

1-31

CYLINDER NOT ROTATING DURING PLAYBACK AND RECORDING

TROUBLESHOOTING GUIDE

Is the voltage at pin 6 and 7 of CP1001 about DC5V?

Yes

In playback, is the voltage

at pin 3, 8, 10 and 12 of CP1001

about DC5V?

Check IC1001.

PLAYBACK PICTURE NOISY

(EVEN AFTER CLEANING HEADS)

Yes

Check pin 103 and 104 of IC1001 lines.

Replace CAPATAN DD UNIT.

Is FM signal at TP4001 more than 300mVp-p?

Yes

Is VIDEO waveform

at pin 30 of IC4001 2Vp-p

are there any noises?

Yes

Is video output at pin 26

of IC4001 2Vp-p and are

there any noise?

Yes

Check J4201.

Check IC4001 and CYLINDER UNIT.

Check IC4001 and peripheral circuit.

Check IC4001 and IC1001.

1-32

NO NORMAL AUDIO ON PLAYBACK

TROUBLESHOOTING GUIDE

Does audio appear on E-E?

Yes

Is the voltage at pin 6 of IC4001 2.3V?

Yes

Does AUDIO signal appear at pin 10 of IC4001.

Yes

Check AUDIO HEAD for debris of stains. Check that the connector from AUDIO HEAD is fully inserted to Replace IC4001.

Refer to section "NO E-E".

Check C4031 and peripheral circuit.

Check IC4001 and peripheral circuit.

1-33

CAPSTAN DD MOTOR NOT ROTATING

TROUBLESHOOTING GUIDE

In playback, is the voltage at pin 2 and 4 of CP1001 12V?

Yes

Is the voltage at pin 11 of CP1001 5V?

Yes

In playback, check the

voltage at pin 108 of IC1001

is 2.5V?

Yes

Does DD MOTOR rotate now? If not, replace DD MOTOR .

Check POWER circuit.

Replace IC1001.

1-34

AUDIO CAN NOT BE RECORDED

TROUBLESHOOTING GUIDE

Is BIAS level O.K at T4001?

Is there AUDIO signal at pin 10 of IC4001?

60V

Yes

Is the voltage at Emitter of Q4003 5V?

Yes

Is the voltage at pin 23 of IC4001 above 5V?

Yes

T4001 is broken or shorted.

Check POWER circuit.

Check IC4001.

Check the circuit between audio out of Tuner and pin 10 of IC4001.

Check J4201 and peripheral circuit.

1-35

CASSETTE IN AND DOWN, UNIT HAS NO FUNCTIONS

TROUBLESHOOTING GUIDE

Does mode OSD appear in Monitor?

Does VCR operate with the remote control?

Yes

Is the voltage at pin 34 of IC1001 when pressing the

SW656?

Yes

Check the circuit at pin 34 of IC1001.

Yes

Check LOADING MOTOR, MODE SENSOR and the peripheral parts.

Check IC1001.

Replace SW656, Check peripheral circuit.

1-36

RECORDING MECHANISM WORKS, BUT NO VIDEO RECORDED FROM INPUT JACK OR TUNER

TROUBLESHOOTING GUIDE

Does VIDEO signal appear at pins 30 and 32 of IC4001?

Yes

Does VIDEO signal appear at pin 26 of IC4001?

Yes

Does FM signal appear at pin 59 to IC4001?

Is the voltage at pin 91 of IC1001 5V?

Yes

Check the circuit from VIDEO input jack to IC4001, from Tuner Pack to IC4001.

Check IC1001.

Check IC4001.

Yes

Does the FM current

appear at pin 59 of IC4001

during the REC?

Yes

Check CYLINDER UNIT and IC4001 circuit.

Check IC4001 and check

the peripheral circuit.

1-37

NO E-E

(NO VIDEO FROM TUNER)

TROUBLESHOOTING GUIDE

Are the plugs connected to the VIDEO input jacks?

Yes

Do the voltages appear at each terminal +B(5V) and

TU(32V) of TU6001?

Yes

Check VIDEO

Does VIDEO signal appear at pin 18 of TU6001?

Disconnect the plugs from the VIDEO input Jacks.

Check peripheral circuit.

Replace TU6001.

Yes

Is there VIDEO waveform at pin 32 of IC4001?

Yes

Replace IC4001.

Check J4201.

1-38

NO E-E AUDIO (MONO)

TROUBLESHOOTING GUIDE

Is the voltage at pins 52, 68 and 77 of IC4001 5V?

Yes

Does signal appear at pin 78 of IC4001?

Yes

Does signal appear at pin 10 of IC4001?

Yes

Check J4201.

Check POWER BLOCK.

Check J4204 and J4205.

Replace IC4001.

1-39

NO TUNER AUDIO (MONO)

TROUBLESHOOTING GUIDE

Do the voltages appear at

each terminal +B(5V) and

TU(32V) of TU6001?

Yes

Does signal appear at pin 15 of TU6001?

Yes

Does signal appear at pin 76 of IC4001?

Yes

Check J4201 and peripheral circuit.

Check POWER BLOCK.

Check TU6001 and peripheral circuit.

Replace IC4001.

1-40

<Reference>

CKA

SEMICONDUCTOR BASE CONNECTIONS

DIODE IC

CATHODE

ANODE

1SS133T-77 1N4005-EIC 1SS244T-77 LTE-3271T-012A-O AN3663FBP PST3231NR KIA431A-AT MTZJ12B T-77 21DQ09N-TA2B1 LTL-1CHEE-002A LA71206M-MPB MTZJ13B T-77 RGP10J-EIC LTL-1CHGE-031A OEC0130A MTZJ24B T-77 SB140-EIC MTZJ33B T-77 MTZJ6.8B T-77

TRANSISTOR

LTV-817M-VB 2SD734(E,F)-AA KTC3198-AT(Y,GR) 2SC4160-OEC-YAC1 KRA103SRTK RPT-38PB113 ST-304L

KTA1266-AT(Y,GR) KTC3203_Y-AT KRC103SRTK

KTC3209_Y-AT KTA1504S_Y_RTK

KTC3875S_Y_RTK

RPI-352C40N RPI-303

4-1

GENERAL SPECIFICATIONS [HR-A60UC]

G-1 VCR System VHS Player / Recorder

System Video System NTSC

G-2 Tuning Broadcasting System US System M

System Tuner and System 1Tuner

G-3 Power Power Source AC 120V, 60Hz

G-4 Regulation Safety UL / CSA

G-5 Temperature Operation 5oC - 40oC

G-6 Operating Humidity Less than 80% RH G-7 Signal Video Signal Input Level 1 V p-p/75 ohm

Hi-Fi STEREO Yes NTSC PB(PAL60Hz) Deck DECK OVD-7

Heads Video Head 4Head

FM Audio Head 2Head

Normal Audio /Control Mono / Yes

Erase(Full T rac k Erase) Y es T ape Rec P AL Speed NTSC SP/EP (SLP)

Play PAL -

Fast Forward / Rewind Time (Approx.) at +25Co FF:4'50"/REW:2'30"

Forward/Reverse NTSC or PAL-M SP/EP (SLP) = 3x,5x/9x,15x Picture Search PAL or SECAM Frame Advance Yes Slow Speed 1/10

Receive CH Destination USA(w/CATV)

Intermediate Picture(FP) 45.75MHz Frequency Sound(FS) 41.25MHz

Preset CH RF Converter Output Yes

Channel 3 or 4 ch

Level/Impedance 66dBu /75ohm

Sound Selector No Stereo/Dual TV Sound Yes (US-Stereo)

Power Consumption Power On(at AC) 9W at 120V 60Hz

Protector Power Fuse Yes

Audio Signal Input Level -8dBm/50Kohm

Hi-Fi Audio Signal Dynamic Range : More than 90dB

Loading System Front Motor 3

NTSC SP/EP (SLP)

with Cassette T-120

Tuning System F-Synth Input Impedance VHF/UHF 75 OHM CH Coverage

FP-FS 4.50MHz

DC -

Stand by (at AC) 1.7W at 120V 60Hz Per Year -

Dew Sensor No

Radiation FCC / IC

Storage -20oC - 60oC

Output Level 1 V p-p/75 ohm S/N Ratio (Weighted) 50 dB Horizontal Resolution at SP Mode 230Line

Output Level -8dBm/1Kohm S/N Ratio at SP (Weighted) 42dB Harmonic Distortion at SP (1KHz) T

Frequency Response at SP 100Hz - 10kHz

Frequency Response 20Hz ~20kHz Wow And Flutter : Less than 0.01 %Wrms Channel Separation : More than 60 dB Harmonic Distortion : Less than 0.01

pical

at LP -

at SLP 100Hz - 4kHz

2-69,4A,A-5~ A-1,A~I,J~ W W+1-W+84

1.5%

4-2

(Sy

)

GENERAL SPECIFICATIONS [HR-A60UC]

G-8 On Screen Menu Yes

Display Menu T ype Character

G-CODE(or SHOWVIEW or PLUSCODE)No. Entry No Stereo,Audio Output,SAP Yes

Play/Stop/FF/Rew/Rec/OTR (ITR) /T-Rec/Pause/Eject/Tape In

G-9 OSD Language English French Spanish G-10 Clock,Timer Calendar 1990/1/1 ~ 2081/12/31

and Timer Timer Events 8 prog/1 month Back-up One Touch Recording Max Time 6 Hours

OTPB Valid Time No Timer Back-up (at Power Off Mode) 5 sec.

G-11 Display Indicator No

Indicator T ype -

Timer Rec Set Yes Auto Repeat On/Off Yes SAP On/Off Yes CH Setup Yes

System Setup Yes

TV/CATV Yes Auto CH Memory Yes Add/Delete Yes

Clock Set Yes (Calendar 12H) Language Yes No Noise Back Ground Yes Auto Clock Yes Standard Time Yes Daylight Saving Time Yes

mbol Mark

CH/AV (LINE) Yes Clock Yes Repeat Yes Tape Counter Yes Index No Tape Speed Yes ATR / Manual Tracking Yes Zero Return No Hi-Fi Yes

Clock/Counter,CH,Timer Rec, Play, REC VCR -

PM RF Output CH -

Yes

4-3

GENERAL SPECIFICATIONS [HR-A60UC]

G-12 Remote Unit RC-ES

Control Glow in Dark Remocon No

G-13 Features Auto Head Cleaning No

Format type JVC Custom Code 43 / 03 Power Source Voltage(D.C) 3V

UM size x pcs UM-4 x 2 pcs Total Keys 35 Keys Keys Power Yes

1Yes

2Yes

3Yes

4Yes

5Yes

6Yes

7Yes

8Yes

9Yes

0/Input Select Yes

CH Up Yes

CH Down Yes

Play /Slow Yes

F.Fwd Yes

Rew Yes

Pause/Still Yes

Stop Yes

Rec/OTR Yes

Counter Reset/Cancel Yes

Speed / Auto Tracking Yes

Timer Rec Yes

Set/Tracking+ Yes

Set/ T rac king - Y es

Menu Y es

Enter Yes

Display (CALL) Yes

TV/VCR Yes

Audio Select Yes

TV CH+ Yes

TV CH- Yes

TV Input Select Yes

TV Volume+ Yes

TV Volume- Y es

TV Power Yes

Auto Tracking Y es Index Search No HQ (VHS Standard High Quality) Yes Auto Power On, Auto Play, Auto Rewind, Auto Eject Yes Auto Power Off Yes Forward/Reverse Picture Search Yes VIDEO PLUS+ (SHOWVIEW,G-CODE) No One Touch Play Back No Auto CH Memory Yes SQPB Yes CATV Ye s Energy Star Yes MTS (SAP) Yes Auto Clock Set Yes CM Skip (30sec x 6 Times) No

4-4

GENERAL SPECIFICATIONS [HR-A60UC]

G-14 Accessories Owner's Manual Language English/French

Remote Control Unit Yes Dew Caution Sheet No Video Cassette Tape No Battery Yes

Safety Tip No Toll Free Insert Sheet No Quick Set-Up Sheet No Information Sheet (Buyer Supply) No 75 Ohm Coaxial Cable (0.9m) Yes Rod Antenna No

Loop Antenna No

U/V Mixer No DC Car Cord (Center+) No Guarantee Card Yes Warning Sheet No Circuit Diagram No Antenna Change Plug No Service Facility List Yes Important Safeguard No Dew/AHC Caution Sheet No AC Plug Adapter No Quick Set-up Sheet No AC Cord No AV Cord (1.2m) No Product Registration Card No PTB Sheet No 300 ohm to 75 ohm Antenna Adapter No

G-15 Interface Switch Front Power Yes

Rear RF Output SW No

Indicator Power Yes(Green)

Terminals Front Video Input RCA x 1 (Black)

Rear Video Input No

G-16 Set Size Approx. W x D x H (mm) 360 x 222.5 x 95 G-17 Weight Net (Approx.) 3.2kg(7.1lbs)

w/Guarantee Card Yes (English Only)

UM size x pcs UM 4 x 2pcs OEM Brand -

Poles Terminal

Terminal

Play Yes Pause/Still No System Select No One T ouch Playback No Channel Up Yes Channel Down Yes F.FWD/Cue Yes Eject/Stop Yes Main Power SW No Volume Up No Volume Down No Rew/Rev Yes Rec/OTR Yes

Stand by No Repeat No TV/VCR Yes(Green) Rec Yes(Red) T-Rec Yes(Red) Tape In No

Audio Input RCA x 2 (Stereo, Black) Other T erminal No

Audio Input No Video Output RCA x 1 (Yellow) Audio Output RCA x 2 (Stereo, White/Red) Euro Scart No DC Jack 12V (Center +) No VHF/UHF Antenna Input F Type AC Inlet No

Gross (Approx.) 3.8kg(8.4lbs)

4-5

GENERAL SPECIFICATIONS [HR-A60UC]

G-18 Carton Master Carton No

Gift Box Yes

Drop Test Natural Dropping At 1Corner / 3Edges / 6Surfaces

Container Stuffing(40' container) 3,136 Sets

G-19 Material Cabinet Front PS 94V2 or More / DECABROM

PCB Non-Halogen Demand No

Content -

Material -

Dimensions W x D x H (mm) -

Description of Origin -

Material Single/Full Color

Dimensions W x D x H (mm) 420x291x160

Design As Per BUYER 's

Description of Origin Yes

Height (cm) 80

Eyelet Demand No

4-6

JVC SERVICE & ENGINEERING COMPANY OF AMERICA

DIVISION OF JVC AMERICAS CORP.

www.jvcservice.com(US Only)

JVC CANADA INC.

Head office

21 Finchdene Square Scarborough, Ontario M1X 1A7

(416)293-1311

Printed in Japan 0301 VP

JVC HR-A60UC Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

TABLE OF CONTENTS

Important Safety Precautions

DISASSEMBLY INSTRUCTIONS

2. REMOVAL OF VCR DECK PARTS

KEY TO ABBREVIA TIONS

PREVENTIVE CHECKS AND SERVICE INTER VALS

CLEANING

SERVICE MODE LIST

SERVICING FIXTURES AND TOOLS

MECHANISM ADJUSTMENT PARTS LOCATION GUIDE

MECHANICAL ADJUSTMENTS

TAPE REMOVAL METHOD AT NO POWER SUPPLY

1. CONFIRMATION AND ADJUSTMENT

2. CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM

ELECTRICAL ADJUSTMENTS

1. BASIC ADJUSTMENT

ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (Connector Connections)

IC DESCRIPTIONS

SERVO TIMING CHART

MECHANISM TIMING CHART

TROUBLESHOOTING GUIDE

<Reference>

SEMICONDUCTOR BASE CONNECTIONS

GENERAL SPECIFICATIONS [HR-A60UC]