JVC HR-S5911U, HR-S5901 Service Manual

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Page 1

SERVICE MANUAL

VIDEO CASSETTE RECORDER

HR-S5901U, HR-S5911U, HR-S5911U(C)

REW

24HR QUICK

REC LINK

PROGRAM

S-VIDEO

POWER

INSERT

A.DUB

SPECIFICATIONS

GENERAL

Power requirement : AC 120 Vd, 60 Hz Power consumption

Power on : 17 W Power off : 1.5 W

Temperature

Operating : 5°C to 40°C (41°F to 104°F) Storage : –20°C to 60°C (–4°F to140°F)

Operating position : Horizontal only Dimensions (W x H x D) : 435 mm x 94 mm x 247 mm

Weight : 2.8 kg (6.2 lbs) Format : S-VHS/VHS NTSC standard Maximum recording time

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

(17-3/16" x 3-3/4" x 9-3/4")

VIDEO/AUDIO

Signal system : NTSC-type color signal and EIA

Recording/Playback system

Signal-to-noise ratio : 45 dB Horizontal resolution

VHS : 230 lines S-VHS : 400 lines

Frequency range

Normal audio : 70 Hz to 10,000 Hz Hi-Fi audio : 20 Hz to 20,000 Hz

Input/Output : RCA connectors (IN x 2, OUT x 1)

monochrome signal, 525 lines/ 60 fields

: DA-4 (Double Azimuth) head helical

scan system

S-video connectors (IN x 2, OUT x 1)

TUNER

Tuning system : Frequency-synthesized tuner Channel coverage

VHF : Channels 2–13 UHF : Channels 14–69 CATV : 113 Channels

RF output : Channel 3 or 4 (switchable; preset to

Channel 3 when shipped) 75 ohms, unbalanced

TIMER

Clock reference : Quartz Program capacity : 1-year programmable timer/

8 programs

Memory backup for timer is not supported.

ACCESSORIES

Provided accessories : Infrared remote control unit,

“AA” battery x 2, S-video cable (4-pin), RF cable (F-type)

Specifications shown are for SP mode unless specified otherwise. E. & O.E. Design and specifications subject to change without notice.

V15S15

This service manual is printed on 100% recycled paper.

No.82911

March 2002

Page 2

Page 3

Section Title Page Section Title Page

Important Safety Precautions INSTRUCTIONS

1. DISASSEMBLY

1.1 Manually removing the cassette tape ......................... 1-1

1.2 Removing the major parts ........................................... 1-2

1.2.1 How to read the procedure table........................... 1-2

1.2.2 Disassembly procedure ........................................ 1-2

1.3 Emergency display function ........................................ 1-4

1.3.1 Displaying the EMG information ........................... 1-4

1.3.2 Clearing the EMG history ...................................... 1-4

Details of the OSD display in the EMG display mode

1.3.3

1.3.4 EMG content description....................................... 1-6

1.3.5 EMG detail information<1> ................................... 1-7

1.3.6 EMG detail information<2> ................................... 1-8

1.3.7 EMG detail information<3> ................................... 1-8

1.4 Service position........................................................... 1-9

1.4.1 How to set the "Service position" .......................... 1-9

1.5 Jig RCU mode............................................................. 1-9

1.5.1 Setting the Jig RCU mode .................................... 1-9

1.5.2 Setting the User RCU mode ................................. 1-9

1.6 Mechanism service mode ........................................... 1-9

1.6.1 How to set the "Mechanism service mode"........... 1-9

1.6.2 How to exit from the "Mechanism service mode".. 1-9

1.7 Maintenance and inspection ..................................... 1-10

1.7.1 Cleaning .............................................................. 1-10

1.7.2 Lubrication .......................................................... 1-10

Suggested servicing schedule for main components

1.7.3

2. MECHANISM

2.1 Before disassembling.................................................. 2-1

2.1.1 Notes..................................................................... 2-1

2.1.2 Mechanism operation check ................................. 2-1

2.1.3 Setting the mechanism assembling mode ............ 2-1

2.1.4 Layout of the main mechanism parts .................... 2-2

2.1.5 Disassembling procedure table............................. 2-3

2.2 Replacement of the main mechanism parts................ 2-4

2.2.1 Cassette holder ..................................................... 2-4

2.2.2 A/C head ............................................................... 2-5

2.2.3 Guide arm, pinch roller arm .................................. 2-6

2.2.4 Idler arm, idler gear 1/2 ......................................... 2-6

2.2.5

Main brake(T), brake lever , tension arm,reel disk(S/T), Rec safety lever Press lever, control cam, capstan brake assembly ,loading motor assembly

2.2.6

2.2.7 Capstan motor, load gear, control plate ................ 2-8

2.2.8 Clutch unit assembly, direct gear .......................... 2-9

2.3 Mechanism timing chart ............................................ 2-10

... 1-5

.. 1-10

... 2-6

. 2-7

4. CHARTS AND DIAGRAMS

4.1 BOARD INTERCONNECTIONS ................................. 4-3

4.2 MAIN(VIDEO/N. AUDIO) SCHEMATIC DIAGRAM ..... 4-5

4.3 MAIN(S-SUB) SCHEMATIC DIAGRAM...................... 4-7

4.4 MAIN(SYSCON) SCHEMATIC DIAGRAM.................. 4-9

4.5 MAIN(SW.REG) SCHEMATIC DIAGRAM................. 4-11

4.6 MAIN(TUNER) SCHEMATIC DIAGRAM................... 4-13

4.7 MAIN(FMA/DEMOD) SCHEMATIC DIAGRAM......... 4-15

4.8 MAIN(FRONT) SCHEMATIC DIAGRAM................... 4-17

4.9 MAIN(TERMINAL) SCHEMATIC DIAGRAM............. 4-19

4.10 2D DIGITAL SCHEMATIC DIAGRAM ..................... 4-21

4.11 2D DIGITAL CIRCUIT BOARD ................................ 4-23

4.12 MAIN CIRCUIT BOARD.......................................... 4-25

4.13 REMOTE CONTROLLER SCEMATIC DIAGRAM.. 4-27

4.14 WAVEFORMS ......................................................... 4-28

4.15 VOLTAGE CHARTS................................................ 4-29

FDP GRID ASSIGNMENT AND ANODE CONNECTION

4.16

4.17 CPU PIN FUNCTION .............................................. 4-30

4.18 SYSTEM CONTROL BLOCK DIAGRAM................ 4-31

4.19 VIDEO BLOCK DIAGRAM ...................................... 4-33

4.20 AUDIO BLOCK DIAGRAM...................................... 4-37

5. PARTS LIST

5.1 PACKING AND ACCESSORY ASSEMBLY<M1> ....... 5-1

5.2 FINAL ASSEMBLY<M2>............................................. 5-2

5.3 MECHANISM ASSEMBLY<M4> ................................. 5-4

5.4 ELECTRICAL PARTS LIST......................................... 5-6

MAIN BOARD ASSEMBLY<03> ..................................... 5-6

2D DIGITAL BOARD ASSEMBLY<05> ......................... 5-12

A/C HEAD BOARD ASSEMBLY<12> ........................... 5-13

REAR S JACK BOARD ASSEMBLY<29>..................... 5-13

FRONT S JACK BOARD ASSEMBLY<36> .................. 5-13

ADV.JOG/SW BOARD ASSEMBLY<38> ...................... 5-13

LOADING MOTOR BOARD ASSEMBLY<55>.............. 5-13

R.PAUSE BOARD ASSEMBLY<99>............................. 5-13

...4-29

3. ADJUSTMENT

3.1 Before adjustment ........................................................3-1

3.1.1 Precaution ............................................................. 3-1

3.1.2 Required test equipments ..................................... 3-1

3.1.3 Required adjustment tools .................................... 3-1

3.1.4 Color(colour) bar signal, color(colour) bar pattern 3-1

3.1.5 Switch settings ...................................................... 3-1

3.1.6

Manual tracking mode (Auto tracking ON/OFF) setting

3.1.7 EVR adjustment .................................................... 3-2

3.2 Mechanism compatibility adjustment .......................... 3-2

3.2.1 Tension pole position............................................. 3-2

3.2.2 FM waveform linearity ........................................... 3-3

3.2.3 Height and tilt of the A/C head .............................. 3-3

3.2.4 A/C head phase(X-value)...................................... 3-4

3.3 Electrical adjustment ................................................... 3-4

3.3.1 Servo circuit .......................................................... 3-4

3.3.1.1 Switching point ................................................. 3-4

3.3.1.2 Slow tracking preset......................................... 3-4

3.3.2 Video circuit........................................................... 3-5

3.3.2.1 EE Y/PB Y (S-VHS/VHS)level.......................... 3-5

3.3.3 Audio circuit........................................................... 3-5

3.3.3.1 Audio REC FM ................................................. 3-5

3-2

The following table lists the differing point(s) between models HR-S5901U, HR-S5911U, and HR-S5911U(C).

ITEM

BODY COLOR BLACK PURE-SILVER

Note(s): Mark

is same as left.

MODEL

HR-S5901U

HR-S5911U HR-S5911U(C)

Page 4

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 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.

symbol and shaded ( ) parts are

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

Page 5

Chassis

Power cord, primary wire

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.

Externally exposed accessible part

Z V

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

Earth pin

AC Line Voltage

100 V

100 to 240 V

110 to 130 V

200 to 240 V

Exposed accessible part

Milli ohm meter

Fig. 10

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

Grounding Specifications

Region

USA & Canada

Europe & Australia

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)

Grounding Impedance (Z)

≤

Z 0.1 ohm

≤

Z 0.5 ohm

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

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

Page 6

Page 7

SECTION 1

Screw(a)

Top frame

Cassette tape

Cassette holder

Side frame(R)

Side frame(L)

Hook(a)

Hook(b)

DISASSEMBLY

1.1 Manually removing the cassette tape

If you cannot remove the cassette tape which is loaded because of any electrical or mechanical failures, manually remove it by taking the following steps.

(1) Unplug the power cord plug from the power outlet. (2) Refer to the disassembly procedure of the VCR and perform

the disassembly of the major parts before removing the mechanism assembly. (See Fig. 1-1a.)

Fig. 1-1a

Tension arm assembly

Pole base assembly

Pinch roller arm assembly

(3) Unload the pole base assembly by manually turning the gear

of the loading motor until the pole base assembly is hidden behind the cassette lid. In doing so, hold the tape by the hand to keep the slack away from any grease. (See Fig. 1-1b.) In case of mechanical failures, while keeping the tension arm assembly free from tension, pull out the tape on the pole base assembly. Take the spring(a) of the pinch roller arm

assembly off the hook, and detach it from the tape. (4) Remove the screw (a) of the side frame (L/R). (5) Hold the slack tape and cassette cover together, lift the

cassette tape, top frame, cassette holder and side frames

(L, R) together from the rear and remove them by dis-

engaging the hooks (a) and (b).

Spring(a)

Fig. 1-1b

Fig. 1-1c

(6) Take up the slack of the tape into the cassette. This com-

pletes removal of the cassette tape.

Direction of unloading

1-1

Page 8

1.2 Removing the major parts

1.2.1 How to read the procedure table

This table shows the steps for disassembly of the externally furnished parts and board assemblies. Reverse these steps when re-assembling them.

Step/

Loc No.

Part Name

[1] Top cover, 1-3a

Bracket 2(S1c)

(1) (2) (3) (4) (5)

Fig. No.

Point Note

4(S1a),(S1b),3(L1a), <Note 1a> 2(SD1a),(P1a),(W1a), CN1(WR1a),

----------------------------------------

(1) Order of steps in Procedure

When reassembling, perform the step(s) in the reverse order. These numbers are also used as the identification (location) No. of

parts Figures. (2) Part name to be removed or installed. (3) Fig. No. showing procedure or part location. (4) Identification of part to be removed, unhooked, unlocked,

released, unplugged, unclamped or unsoldered.

P= Spring, W= Washer, S= Screw, L= Locking tab, SD= Solder,

CN**(WR**)= Remove the wire (WR**) from the connector (CN**).

Note:

The bracketed ( ) WR of the connector symbol are as-

•

signed nos. in priority order and do not correspond to those on the spare parts list.

(5) Adjustment information for installation

1.2.2 Disassembly procedure

Step/

Loc No.

Part Name

[1] Top cover 1-2-2d 3(S1a), 2(L1a) [2] Front panel assembly 1-2-2d 2(S2a), 4(L2a), 3(L2b), <Note 2a>

Adv. Jog/SW board assembly

( (

Front S Jack board assembly

[3] Mechanism assembly 1-2-2d CN2001(WR3a), <Note 2a>

(Drum Shield) (S3f), (L3a) (Drum assembly) 1-2-2b CN1(WR3b),

[4] Main board assembly 1-2-2d 2(L4a), (L4b), 2(L4c)

Rear S Jack board assembly

Fig. No.

Point Note

1-2-2a CN7001(WR2a), <Note 2b>

CN7103(WR2b)

--------------------------

) 3(S2b), Knob assembly

---------------------------

) 2(S2c)

(S3a), (S3b) <Note 3a>

--------------------------

1-2-2c (S3c), (S3d), (S3e)

Door opener

Side frame(R)

Switch knob

Switch lever

Fig. 1-2-2a

• When reattaching the Mechanism assembly , secure the screws (S3a to S3b) in the order of a, b.

• When reattaching the Mechanism assembly, be sure to align the phase of the Rotary encoder on the Main board assembly.

• When reattaching the Mechanism assembly, set the “Mechanism assembling mode”. (See “section 2 mechanism”.)

• When reattaching the Mechanism assembly to the Main board assembly , take care not to damage the sensors and switch on the Main board assembly.

• When reattaching the Drum assembly, secure the screws (S3c to S3e) in the order of c, d, e.

Mechanism assembly

(S3d)

(S3c)

(S3e)

Drum assembly <Note 3c>

(S3d)

<NOTE> Attach the Drum assembly appropriately, since the installation state of the Drum assembly influences the FM WAVEFORM LINEARITY greatly.

(S3c)

(S3e)

HOOK

Fig. 1-2-2b

• When handling the drum assembly alone, hold it by the motor or shaft. Be careful not to touch other parts, especially the video heads. Also take care not to damage the connectors.

Shaft

Motor

Video heads

• Be careful not to damage the connector and wire etc. during connection and disconnection.

• When connecting the flat wire to the connector, be careful with the flat wire direction.

• When reattaching the Front panel assembly, make sure that the door opener of the Side frame (R) is lowered in position prior to the reinstallation.

• When reattaching the Front panel assembly, pay careful attention to the switch lever of the Front panel assembly not to make it touch the switch knob of the Main board assembly from the side.

• When reattaching the Front panel assembly, lift the Cassette door slightly.

1-2

Fig. 1-2-2c

Page 9

[3] Mechanism

assembly <Note 3b>

[4] Rear S Jack

board assembly

[4] Main board

assembly

Switch knob <Note 2b>

NOTE) After screwing,execute the

adjustment inspection of the tape running.

(S3f)

(S2a)

(S3a)

Q3002

CN1

D3001

[3] Drum shield

[3] Drum assembly

(S2a)

(WR3a) <Note 2a>

(S3e) <Note 3c>

(S3d) <Note 3c>

(S3c) <Note 3c>

JS3001

Q3001

Slot to fit at (L3a) of the Bottom chassis.

Mechanism assembly

Drum

Screw(S3f)

(S3b) <Note 3a>

FE head

Pole base (Supply)

Drum shield

REAR SIDE

Pole base (Take up)

(L1a)

Must confirm soldering condition as no soldering and dry soldering at portion of Power cord lead on Main board assembly before attach Main board assembly to Bottom chassis.

JS3001

0 0 5

N C

Accord the position of V gap on R. Encoder and PWB silk " ". Accord the position of Boss on R. Encoder and PWB silk " ".

[1] Top cover

Hang the hook of the Terminal board in hole of Bottom chassis.

NOTE) Hang the hook of the Top cover

in hold of Bottom chassis.

(S1a)

(L4c)

(L1a)

Bottom chassis

[2] Front panel

assembly <Note 2b>

(L2a)

(L2b)

Cassette door <Note 2b>

[2] Knob assembly

Absorb the looseness the wire in the S Jack side.

FW7104

FW7107

C903

VR2251

right side

CN7103

(L2a)

(L2b)

from Capstan MDA board assembly

(WR3b)

right side

(L4b)

(L3a)

NOTE) Insert FFC wire to the connector before attaching

Adv. Jog/SW board assembly to Front panel assembly.

Power cord arrangement should be following drawing.

CN2001

(S2b)

(WR2a) <Note 2a>

20mm

Power cord should not be touch to the VA5001 and C5001.

WHITE LINE

VA5001

C5001

right side

back side

CN7001

NOTE) When you fix S Jack board assembly with the screw,

Back side of Front panel assembly

put jig under Front panel assembly.

[2] Front S Jack

[2] Adv. Jog/SW board assembly

back side

NOTE) 1. Insert FFC wire to the connector before attaching Front

Switch lever

S Jack board assembly to Front panel assembly.

2. Fig. 1 reference

NOTE

1. Insert direction of FFC WIRE as follows.

right side

electrode side

back side

supporting side

2. FFC WIRE and DRUM FPC WIRE should be insert as follows.

90°

CN CN

DETAIL " A "

• The wire of FW3001 or FW3002 should not approach the moving parts of Mechanism assembly.

• Absurb the looseness of the wire on the Tuner side.

board assembly

back side

(S2c)

30mm

60mm

Fig.1

DETAIL " B "

Bend the wire by the root.

(WR2b) <Note 2a>

2D DIGITAL

from Front S Jack

board assembly

Hang the hook of Bottom chassis on the Main board assembly.

(L4a)

Fig. 1-2-2d

from Adv. Jog/SW

board assembly

FW3001

FW3002

CN7103

1-3

Page 10

1.3 Emergency display function

This unit saves details of the last two emergencies as the EMG history and allows the status of the VCR and the mechanism of each emergency to be shown both on the display and as OSD information. When using the emergency function, it is required to set the VCR to the Jig RCU mode (the mode in which codes from the Jig RCU can be received).

Jig RCU [Data transmitting method]

Depress the “ ” ( 3 ) button after the data code is set.

CUSTOM CODE 43: A CODE

DATA CODE

INITIAL MODE

0: 00 : 00

E:**:**

*1: *2 : 34

*5: *6 : *7

*8: *9 : *10

Normal display (Counter or clock)

EMG content display (E:Latest:Previous) See 1.3.4. [EMG code display mode]

EMG detail information <1> display See 1.3.5. [Deck and other mode display mode]

EMG detail information <2> display See 1.3.6. [Cassette display mode]

EMG detail information <3> display See 1.3.7. [Deck mode history dispaly mode]

Fig. 1-3-1b EMG display of FDP display model

Fig. 1-3a Jig RCU [PTU94023B]

1.3.1 Displaying the EMG information

The EMG detail of information can be displayed by transmitting the code "59" from the Jig RCU.

Note:

The EMG detail information <1><2> show the information on

•

the latest EMG. It becomes “ – – : – – : – –” when there is no latest EMG record.

0: 00

E: **

1E: **

1: *1

2: *2

3: 34

4: *5

5: *6

6: *7

7: *8

8: *9

9: *10

Normal display

EMG content display (Latest) See 1.3.4.

EMG content display (Previous) See 1.3.4.

EMG detail information <1> See 1.3.5. [Deck operation mode] EMG detail information <1> See 1.3.5. [Mechanism operation mode] EMG detail information <1> See 1.3.5. [Mechanism sensor information and Mechanism mode position] EMG detail information <2> See 1.3.6. [Type of the cassette tape in use <1>] EMG detail information <2> See 1.3.6. [Winding position of the cassette tape in use] EMG detail information <2> See 1.3.6. [Type of the cassette tape in use <2> (Winding area)] EMG detail information <3> See 1.3.7. [Previous deck operation mode] EMG detail information <3> See 1.3.7. [The deck operation mode of the one before the last] EMG detail information <3> See 1.3.7.

[The deck operation mode of the one prior to one above]

Fig. 1-3-1a EMG display of 7segment LED display model

<Reference> EMG display of FDP display mode

(1) Transmit the code “59” from the Jig RCU.

The FDP shows the EMG content in the form of “E:**:**”.

<Example 1> E : 01 : 03

Previous EMG

Latest EMG

<Example 2> E : –– : ––

No EMG record

(2) Transmit the code “59” from the Jig RCU again.

The FDP shows the EMG detail information <1> in the form of “ *1: * 2 : 34 ”.

*1 : Deck operation mode at the moment of EMG *2 : Mechanism operation mode at the moment of EMG 3– : Mechanism sensor information at the moment of

EMG

–4 : Mechanism mode position at the moment of EMG

(3) Transmit the code “59” from the Jig RCU once again.

The FDP shows the EMG detail information <2> in the form of “ *5 : * 6 : *7 ”.

*5 : Type of the cassette tape in use <1> . *6 : Winding position of the cassette tape in use *7 : Type of the cassette tape in use <2> (Winding area)

(4) Transmit the code “59” from the Jig RCU once again.

The FDP shows the EMG detail information <3> in the form of “*8 : *9 : *10”.

* 8 : Previous deck operation mode at the moment of

EMG

*9 : The deck operation mode of the one before the last

at the moment of EMG

* 10 : The deck operation mode of the one prior to one

above at the moment of EMG

(5) Transmit the code “59” from the Jig RCU once again to re-

set the display.

1.3.2 Clearing the EMG history

(1) Display the EMG history. (2) Transmit the code “36” from the Jig RCU. (3) Reset the EMG display.

1-4

Page 11

1.3.3 Details of the OSD display in the EMG display mode

AA BB CC DD EE FF GGGG HHHH

I I JJJJ

KKKK LLLL MMMM

ROM No.

** h

********

Encoder data (See Mechanism mode sequence.)

Remote pause

End sensor

Start sensor

Cassette tab present = 1 Cassette tab broken = 0

*DD: Sensor information details

AA : Key code (JVC code) BB : Deck operation mode (See EMG detail information <1>.) CC :

Mechanism operation mode (See EMG detail information <1>.) DD : Sensor information (See sensor information details.) EE : Capstan motor speed (Search, double speed) F F : Tracking value

GGGG: Cassette tape type <2>, 16 bits.

(See EMG detail information <2>.)

HHHH : Supply reel winding diameter data

I I : Capstan motor speed (FF/REW, double speed)

JJJJ: Tape speed data, lower 8 bits. KKKK : General data display area LLLL : General data display area MMMM : General data display area

LSA LSB LSC LSD

Encoder output = Low

Trerminal - GND = SHORT

Encoder output = High

Trerminal - GND = OPEN

Mechanism mode - Encoder data

1110

9876

543

Mechanism mode sequence

No. Position Encoder data

EJECT 0 h = 0000 EJECT1 1 h = 0001 EJECT2 2 h = 0010

ULSTOP 3 h = 0011

UPPER 4 h = 0100

ONSTOP(PLAY) 5 h = 0101

FWD/SS 6 h = 0110

REV/SS 7 h = 0111

OFFSTOP 8 h = 1000

FFREW-BRAKE 9 h = 1001

FFREW A h = 1010 MIDDLE F h = 1111

1 2 3 4 5 6 7 8 9 10 11 12

LSD

LSC

LSB

LSA

GND

12345

During the EMG display, the OSD shows the data on the deck mode, etc. The details of the display contents are as follows.

Notes:

The display is variable depending on the part No. of the

•

System Control microcomputer (IC3001) built into the VCR. In the following, refer to the figure carrying the same two characters as the top two characters of the part number of your IC.

•

The sensor information in the OSD display contents is par-

tially different from the mechanism sensor information in EMG detail information <1>.

[For MN* only]

AA BB CC DD EE FF GG HH I I JJ KK LL MM NN OO PP QQ RR SS TT

UU VV WW XX YY

[For *HD only]

AA : Deck operation mode (See EMG detail information <1>.) BB :

Mechanism operation mode (See EMG detail of information <1>.) CC : Mechanism transition flag DD : Capstan motor control status EE : Loading motor control status F F : Sensor information (See sensor information details.) GG : Capstan motor speed HH : Key code (JVC code) I I : Supply reel winding diameter data, higher 8 bits. J J : Supply reel winding diameter data, lower 8 bits. KK : Mechanism sensor information & mechanism mode position

(See EMG detail of information <1>.) L L : Tape speed data, higher 8 bits. MM : Tape speed data, lower 8 bits. NN : Cassette tape type <2>, higher 8 bits.

(See EMG detail of information <2>.) OO : Cassette tape type <2>, lower 8 bits.

(See EMG detail of information <2>.) PP : General data display area

YY : General data display area

*FF: Sensor information details

** h

********

Cassette tab present = 1

Encoder data (See Mechanism mode sequence.)

Cassette tab broken = 0

End sensor

Cassette absent = 1 Cassette present = 0

Start sensor

[For both MN*/HD*]

1-5

Page 12

1.3.4 EMG content description Note:

EMG contents “E08/E09” are for the model with Dynamic Drum (DD).

FDP CONTENT CAUSE

E01: Loading EMG

E02:

Unloading EMG

E03: Take Up Reel

Pulse EMG

E04: Drum FG EMG

E05: Cassette Eject

EMG

E06: Capstan FG

EMG

E07:SW Power

Short-Circuit EMG

E08:

DD Initialized (Absolute Position Sensor) EMG

E09: DD FG EMG

E0A: Supply Reel

Pulse EMG

EU1: Head clog warning history

1-6

If the mechanism mode does not change to the next mode within 4 seconds after the loading motor starts rotating in the loading direction, while the mechanism is in the after-loading position (with the tape up against the pole base), [E:01] is identified and the power is switched OFF. However, if the tape loading is not completed within 4 seconds after the loading motor starts rotating in the loading direction, the tape is simply unloaded and ejected. No EMG data is recorded in this case.

When the mechanism mode cannot be changed to another mode even when the loading motor has rotated for more than 4 seconds in the unloading direction, [E:02] is identified and the power is turned off.

When the falling edje of the take-up reel pulse has not been generated for more than 4 seconds in the capstan rotating mode, [E:03] is identified, the pinch rollers are turned off and stopped, and the power is turned off. In this case, however, the mechanism should be in position after tape loading. Note that the reel EMG is not detected during Slow/Frame advance operations.

When the drum FG pulse has not been input for more than 3 seconds in the drum rotating mode, [E:04] is identified, the pinch rollers are turned off and stopped, and the power is turned off.

If the cassette does not reach the eject position within about 0.7 seconds after the cassette housing has started the cassette ejection operation, [E:05] is identified, the drive direction is reversed to load the tape, the mode is switched to STOP mode with the pinch roller OFF, and the power is switched OFF. During the cassette insertion process, the drive direction is reversed and the cassette is ejected if the tape is not up against the pole base within about 3 seconds after the start of the cassette pullingin operation. If the cassette does not reach the eject position within about 0.7 seconds after the drive mode reversal operation, [E:05] is identified and the power is switched OFF immediately.

When the capstan FG pulse has not been generated for more than 1 second in the capstan rotating mode, [E:06] is identified, the pinch rollers are turned off and stopped, and the power is turned off.However, the capstan EMG is not detected in SLOW/ STILL modes. Note that, if the part number of the System Control IC begins with “MN” or “M3”, the capstan EMG is not detected even during the FF/REW operation.

When short-circuiting of the SW power supply with GND has lasted for 0.5 second or more, [E:07] is identified, all the motors are stopped and the power is turned off.

When DD tilting does not complete in 4 seconds, [E:08] is identified, the tilt motor is stopped and the power is turned off.

When the DD FG pulse is not generated within 2.5 seconds, [E:09] is identified, the tilt motor is stopped and the power is turned off.

When the falling edge of the supply reel pulse has not been generated for more than 10 seconds in the capstan rotating mode, [E:0A] is identified and the cassette is ejected (but the power is not turned off). In this case, however, the mechanism should be in the position after tape loading (with the tape up against the pole base). Also note that the reel EMG is not detected during Slow/ Frame advance operations.

Presupposing the presence of the control pulse output in the PLAY mode, when the value obtained by mixing the two V.FM output channels (without regard to the A.FM output) has remained below a certain threshold level for more than 10 seconds, [E:U1] is identified and recorded in the emergency history. During the period in which the head clog is detected, the FDP shows "U:01" and the OSD repeats the “3 seconds of warning display” and the “7 seconds of noise picture display” alternately.

EMG code : “E:C1” or “E:U1” / FDP : “U:01” / OSD : “Try cleaning tape.” or “Use cleaning cassette.” The head clog warning is reset when the above-mentioned threshold has been exceeded for more than 2 seconds or the mode is changed to another mode than PLAY.

1. The mechanism is locked in the middle of the mode transition during a tape loading operation.

The mechanism overruns during the tape loading operation because the SYSCON cannot recognize the mechanism mode normally. This problem is due to a cause such as a rotary encoder failure.

Power is not supplied to the loading MDA. (M12V/Vcc/Vref/ICP are disconnected in the middle.)

The mechanism is locked in the middle of mode transition.

Without an eject signal being sent from the SYSCON, unloading is attempted (i.e. Ejection is attempted while the tape is still inside the mechanism.) because the SYSCON cannot recognize the mechanism mode normally. This is due to a cause such as a rotary encoder failure. (Mechanism position: UPPER)

Power is not supplied to the loading MDA. (M12V/Vcc/Vref/ICP are disconnected in the middle.)

The take-up reel pulse is not generated in the FWD transport modes (PLAY/FWD SEARCH/FF, etc.) because;

1)The idler gear is not meshed with the take-up reel gear because the mechanism malfunctions for some reason.

The idler gear is meshed with the take-up reel gear, but incapable of winding due to

too large mechanical load (abnormal tension);

3)The reel is rotating normally but an FG pulse is not generated due to the take-up reel sensor failure.

The supply reel pulse is not generated in the REV transport modes (REV SEARCH/ REW, etc.) because;

1) The idler gear is not meshed with the supply reel gear because the mechanism mal-

functions for some reason.

2) The idler gear is meshed with the supply reel gear, but incapable of winding due to

too large a mechanical load (abnormal tension);

3) The reel rotates normally but the FG pulse is not generated due to a supply reel sensor failure.

Power(SW5V) is not supplied to the reel sensor on the tape winding side.

The drum could not start or the drum rotation has stopped due to too large a load on the tape, because;

1) The tape tension is abnormally high;

The tape is damaged or a foreign object (grease, etc.) adheres to the tape.

The drum FG pulse did not reach the System controller CPU because;

1) The signal circuit is disconnected in the middle;

2) The FG pulse generator (hall device) of the drum is faulty.

The drum control voltage (DRUM CTL V) is not supplied to the MDA.

Power (M12V) is not supplied to the drum MDA.

The cassette cannot be ejected due to a failure in the drive mechanism of the housing.

When the housing load increases during ejection, the loading motor is stopped because of lack of headroom in its drive torque.

Housing load increasing factors: Temperature environment (low temperature, etc.), mechanism wear or failure.

The sensor/switch for detecting the end of ejection are not functioning normally.

The loading motor drive voltage is lower than specified or power (M12V) is not supplied to the motor (MDA).

When the user attempted to eject a cassette, a foreign object (or perhaps the user's hand) was caught in the opening of the housing.

The capstan could not start or the capstan rotation has stopped due to too large a load on the tape, because;

1) The tape tension is abnormally high (mechanical lock);

2) The tape is damaged or a foreign object (grease, etc.) is adhered to the tape (occur-

rence of tape entangling, etc.).

The capstan FG pulse did not reach the System controller CPU because;

1) The signal circuit is disconnected in the middle;

2) The FG pulse generator (MR device) of the capstans is faulty.

The capstan control voltage (CAPSTAN CTL V) is not supplied to the MDA.

Power (M12V, SW5V) are not supplied to the capstan MDA.

The SW 5 V power supply circuit is shorted with GND.

The SW 12 V power supply circuit is shorted with GND.

1. The absolute value sensor is defective. (The soldered parts have separated.)

2. The pull-up resistor at the absolute sensor output is defective. (The soldered parts have separated.)

3. Contact failure or soldering failure of the pins of the connector (board-to-board) to the absolute value sensor.

The absolute value sensor data is not sent to the System Controller CPU.

1. The FG sensor is defective. (The soldered parts have separated.)

2. The pull-up resistor at the FG sensor output is defective. (The soldered parts have separated.)

3. Contact failure or soldering failure of the pins of the connector (board-to-board) to the FG sensor.

4. The power (5V) to the sensor is not supplied. (Connection failure/soldering failure)

5. The FG pulse is not sent to the System Controller CPU.

The tilt motor is defective. (The soldered parts have separated.)

7. The drive power to the tilt motor is not supplied. (Connection failure/soldering failure)

8. The tilt motor drive MDA - IC is defective.

9. Auto-recovery of the DD tilting cannot take place due to overrun.

The supply reel pulse is not generated in the FWD transport mode (PLAY/FWD SEARCH/FF, etc.) because;

1) PLAY/FWD or SEARCH/FF is started while the tape in the inserted cassette is cut in

the middle;

2) A mechanical factor caused tape slack inside and outside the supply reel side of the

cassette shell. In this case, the supply reel will not rotate until the tape slack is removed by the FWD transport, so the pulse is not generated until then;

3) The reel is rotating normally but the FG pulse is not generated due to a supply reel

sensor failure.

The take-up reel pulse is not generated in the REV transport mode (REV SEARCH/ REW, etc.).

1) REV SEARCH/REW is started when the tape in the inserted cassette has been cut

in the middle;

2) A mechanical factor caused tape slack inside and outside the take-up reel side of

the cassette shell. In this case, the supply reel will not rotate until the tape slack is removed by the REV transport, so the pulse will not be generated until that time;

3) The reel is rotating normally but the FG pulse is not generated due to a take-up reel

sensor failure.

The power (SW 5V) to a reel sensor is not supplied.

Table 1-3-4a

Page 13

1.3.5 EMG detail information <1>

The status (electrical operation mode) of the VCR and the status (mechanism operation mode/sensor information) of the mechanism in the latest EMG can be confirmed based on the figure in EMG detail information <1> .

[FDP/OSD display]

*1 : *2 : 34

*1 : Deck operation mode at the moment of EMG *2 : Mechanism operation mode at the moment of EMG 3– : Mechanism sensor information at the moment of EMG –4 : Mechanism mod

e position at the moment of EMG

Note:

For EMG detailed information <1>, the content of the code

•

that is shown on the display (or OSD) differs depending on the parts number of the system control microprocessor (IC3001) of the VCR. The system control microprocessor parts number starts with two letters, refer these to the corresponding table.

*2 : Mechanism operation mode [Table of MN*]

Display

00 Command standby (No command to be executed) 01 Immediate Power OFF after EMG occurrence 02 Loading from an intermediate position during mechanism initialization 03 Unloading due to EMG occurrence during mechanism initialization 04 Ejecting cassette (ULSTOP to EJECT) 05 Inserting cassette (EJECT to ULSTOP) 06 Loading tape (ULSTOP to PLAY) 07 Unloading tape (PLAY to ULSTOP) 08 Transition from pinch roller ON to STOP 09 Transition from pinch roller OFF to STOP (PLAY to OFFSTOP) 0A Transition from pinch roller OFF to STOP at power OFF 0B Transition from pinch roller ON to STOP at power ON 0C Transition to PLAY 0D Transition to Search FF 0E Transition to REC 0F Transition to FWD STILL/SLOW 10 Transition to REV STILL/SLOW 11 Transition to Search REV 12 Transition from FF/REW to STOP 13 Transition to FF 14 Transition to REW 15 Tape end detection processing during loading 16 Short FWD/REV at tape sensor ON during unloading 17 Transition to FF/REW brake mode

Mechanism operation mode

*1 : Deck operation mode [Common table of MN* and HD]

Display

MN* HD*

00 - Mechanism being initialized 01 00 STOP with pinch roller pressure off (or tape present with P.OFF) 02 01 STOP with pinch roller pressure on 03 - POWER OFF as a result of EMG 04 04 PLAY (Normal playback) 0C 0E REC 10 11 Cassette ejected 20 22 FF 21 - Tape fully loaded, START sensor ON, short FF 22 - Cassette identification FWD SEARCH before transition to FF (SP

24 26 FWD SEARCH (variable speed) including x2-speed 2C 2E INSERT REC 40 43 REW 42 - Cassette identification REV SEARCH before transition to REW (SP

44 47 REV SEARCH (variable speed) 4C 4C AUDIO DUB 6C 6E INSERT REC (VIDEO + AUDIO) 84 84 FWD STILL / SLOW 85 85 REV STILL / SLOW 8C 8F REC PAUSE 8D - Back spacing 8E - Forward spacing (FWD transport mode with BEST function) AC AF INSERT REC PAUSE

AD - INSERT REC back spacing CC CD AUDIO DUB PAUSE CD - AUDIO DUB back spacing EC EF INSERT REC (VIDEO + AUDIO) PAUSE ED - INSERT REC (VIDEO + AUDIO) back spacing

x7-speed)

Deck operation mode

[Table of HD*]

Display

00 STOP with pinch roller pressure off 01 STOP with pinch roller pressure on 02 U/L STOP (or tape being loaded) 04 PLAY (Normal playback) 05 PLAY (x1-speed playback using JOG) 0E REC 11 Cassette ejected 22 FF 26 FWD SEARCH (variable speed) including x2-speed 2E INSERT REC 43 REW 47 REV SEARCH 4C AUDIO DUB 6E INSERT REC (VIDEO + AUDIO) 84 FWD STILL/SLOW 85 REV STILL/SLOW 8F REC PAUSE AF INSERT REC PAUSE C7 REV SEARCH (x1-speed reverse playback using JOG) CD AUDIO DUB PAUSE EF INSERT REC (VIDEO + AUDIO) PAUSE F0 Mechanism being initialized F1 POWER OFF as a result of EMG F2 Cassette being inserted F3 Cassette being ejected F4 Transition from STOP with pinch roller pressure on to STOP with pinch roller

pressure off F5 Transition from STOP with pinch roller pressure on to PLAY F6 Transition from STOP with pinch roller pressure on to REC F7 Cassette type detection SEARCH before FF/REW is being executed F8 Tape being unloaded F9 Transition from STOP with pinch roller pressure off to STOP with pinch roller

pressure on FA Transition from STOP with pinch roller pressure off to FF/REW FB Transition from STOP with pinch roller pressure off to REC.P (T.REC,etc.) FC Transition from STOP with pinch roller pressure off to cassette type detec-

tion SEARCH FD Short REV being executed after END sensor on during unloading FE Tension loosening being executed after tape loading (STOP with pinch roller

pressure on) FF Tape being unloaded

Mechanism operation mode

1-7

Page 14

3– : Mechanism sensor information [Common table of MN* and HD*]

Display

0- Tab broken ON ON ON 1- Tab broken ON 2- Tab broken ON 3- Tab broken ON OFF 4- Tab present ON 5- Tab present 6- Tab present OFF 7- Tab present OFF 8- Tab broken ON ON 9- Tab broken ON A- Tab broken B- Tab broken OFF C- Tab present ON D- Tab present E- Tab present OFF F- Tab present OFF

REC safety SW

Tab broken = 0 Sensor ON = 0 Sensor ON = 0 Tab present = 1 sensor OFF = 1 Sensor OFF = 1

Mechanism sensor information

Start sensor End sensor

OFF

OFF OFF

ON OFF OFF

OFF OFF

OFF

OFF OFF OFF

Mechansim

position sensor

OFF

*5 : Cassette tape type <1>

Display Cassette tape type <1>

00 Cassette type not identified 16

Large reel/small reel (T-0 to T-15/T-130 to T-210) not classified 82 Small reel, thick tape (T-120) identified/thin tape (T-140) identified 84 Large reel (T-0 to T-60) identified 92

Small reel, thick tape (T-130) identified/thin tape (T-160 to T-210) identified 93

Small reel, thick tape/C cassette (T-0 to T-100/C cassette) not classified C3

Small reel, thick tape/C cassette (T-0 to T-100/C cassette) being classified D3

Small reel, thick tape/C cassette (T-0 to T-100/C cassette) being classified E1 C cassette, thick tape (TC-10 to TC-20) identified E2 Small reel, thick tape (T-0 to T-100) identified E9 C cassette, thin tape (TC-30 to TC-40) identified F1

C cassette, thick tape/thin tape (TC-10 to TC-40) not classified

Notes:

Cassette tape type

•

<1>

is identified a few times during mode transition and the identification count is variable depending on the cassette tape type. If an EMG occurs in the middle of identification, the cassette tape type may not be able to be identified.

•

If other value than those listed in the above table is displayed, the cassette tape type is not identified.

–4 : Mechanism mode position [Common table of MN* and HD*]

Mechanism

sensor

information

Display

Deck operation mode

-0 Not established

-1 EJECT EJECT position

-2 EJECT-EJECT1 Intermodal position

-3 EJECT1 EJECT1 position

-4 EJECT1-EJECT2 Intermodal position

-5 EJECT2 EJECT2 position

-6 EJECT2-ULSTOP Intermodal position

Even number (0, 2, 4, 6, 8, A, C, E)

-7 ULSTOP ULSTOP position

-8 ULSTOP-UPPER Intermodal position

-9 UPPER Loading (unloading) tape

-A UPPER-ONSTOP Intermodal position

-B ONSTOP PLAY position

-C PLAY-FWD/SS Intermodal position

-D FWD/SS

FWD (FWD Still/Slow) position

-E FWD/SS-REV Intermodal position

-F REV

REV (REV Still/Slow) position

-0 REV-OFFSTOP Intermodal position

-1 OFFSTOP Pinch roller OFF position Odd number (1, 3, 5, 7, 9, B, D, F)

-2

OFFSTOP-FFREWB

Intermodal position

-3 FFREWB FF/REW Brake position

-4 FFREWB-FFREW Intermodal position

-5 FFREW FF/REW position

1.3.6 EMG detail information <2>

The type of the cassette tape and the cassette tape winding position can be confirmed based on the figure in EMG detail information <2> .

[FDP/OSD display]

*5 : *6 : *7

*5 : Type of the cassette tape in use <1> *6 : Winding position of the cassette tape in use *7 : Type of th

e cassette tape in use

<2>

(Winding area)

Note:

EMG detail information <2> is the reference information

•

stored using the remaining tape detection function of the cassette tape. As a result, it may not identify cassette correctly when a special cassette tape is used or when the tape has variable thickness.

*6 : Cassette tape winding position

The cassette tape winding position at the moment of EMG is displayed by dividing the entire tape (from the beginning to the end) in 21 sections using a hex number from “00” to “14”.

“00” : End of winding “14” : Beginning of winding “FF” : Tape position not identified

*7 : Cassette tape type <2> (Winding area)

Display

00 04 - 08 05 - 06 05 - 0C 06 - 0C 06 - 0C 07 - 08 09 - 0B 0C - 0D 0D - 0F 0E - 10 10 - 12 10 - 13 11 - 14 12 - 14 13 - 14 13 - 14 13 - 14 13 - 14 15 - 16 16 - 17 17 - 18 19 - 1B

Cassette tape type <2>

Cassette type not identified C cassette, thick tape TC-10 Small reel, thick tape T-20 C cassette, thick tape TC-20P C cassette, thin tape TC-40 C cassette, thin tape TC-30 Small reel, thick tape T-40 Small reel, thick tape T-60 Small reel, thick tape T-80(DF-160) Small reel, thick tape T-90(DF-180) Small reel, thick tape T-100 Small reel, thin tape T-140 Small reel, thick tape T-120(DF-240) Small reel, thick tape T-130 Small reel, thin tape T-160 Small reel, thin tape T-210(DF-420) Small reel, thin tape T-180(DF-360) Small reel, thin tape T-168 Small reel, thick tape DF-300 Large reel T-20 Large reel T-30 Large reel T-40 Large reel T-60

(Reference) Word data (Beginning) (End)

(0497 - 0506) (0732 - 0858)

(05A9 - 0661)

(0599 - 05FF) (0AA1 - 0C07)

(0623 - 063D) (0C41 - 0CC3)

(0611 - 0638) (0C0C - 0CB2)

(07CC - 08E5)

(09FD - 0B78)

(0C20 - 0DFC)

(0D31 - 0F3E) (0E43 - 107F) (10E1 - 120C)

(1073 - 1313)

(1185 - 1429) (12D3 - 141F) (1373 - 14C3) (1357 - 14C0) (1395 - 14EE) (13A8 - 14CE)

(1536 - 1618)

(1647 - 175A) (1759 - 189C) (1989 - 1B2F)

Note:

The values of cassette tape type <2> in the above table are

•

typical values with representative cassette tapes.

1.3.7 EMG detail information <3>

Three deck operation modes preceding the deck operation mode in which the EMG occurs may be confirmed based on the figures in the EMG information detail <3>. For the contents of the displayed information, see the table "Deck operation mode" in section "1.3.5 EMG detail information <1>".

1-8

Page 15

1.4 Service position

This unit has been designed so that the Mechanism and Main board assemblies can be removed together from the chassis assembly. Before diagnosing or servicing the circuit boards, take out the major parts from the chassis assembly.

1.4.1 How to set the “Service position”

(1) Refer to the disassembly procedure and perform the dis-

assembly of the major parts before removing the Mechanism assembly.

(2) Remove the screws that fix the Mechanism assembly to the

Chassis assembly. If any other screws are used to fix the boards, remove them also.

(3) Remove the combined Mechanism and Main board assem-

blies. (4) If any other major parts are used, remove them also. (5) Connect the wires and connectors of the major parts that

have been removed in steps (1) to (4). (Refer to Fig. 1-2-2d.) (6) Place the combined Mechanism, Main board and other

board assemblies upside down. (7) Insert the power cord plug into the power outlet and then

proceed with the diagnostics and servicing of the board as-

sembly.

Notes:

Before inserting the power cord plug into the power out-

•

let, make sure that none of the electrical parts are able to short-circuit between the workbench and the board assembly.

•

For the disassembly procedure of the major parts and details of the precautions to be taken, see “1.2 Removing the major parts”.

•

If there are wire connections from the Main board and Mechanism assemblies to the other major parts, be sure to remove them (including wires connected to the major parts) first before performing step (2).

•

When carrying out diagnosis and repair of the Main board assembly in the “Service position”, be sure to ground both the Main board and Mechanism assemblies. If they are improperly grounded, there may be noise on the playback picture or FDP counter display may move even when the mechanism is kept in an inoperative status.

•

In order to diagnose the playback or recording of the cassette tape, set the Mechanism assembly to the required mode before placing it upside down. If the mechanism mode is changed (including ejection) while it is in an upside down position the tape inside may be damaged.

•

For some models, the mechanism and board assemblies are attached by connectors only. When carrying out a diagnosis or repair of the boards in the “Service position”, make sure that the connectors are not disconnected.

1.5 Jig RCU mode

This unit uses the following two modes for receiving remote control codes.

1) User RCU mode : Ordinary mode for use by the user.

2) Jig RCU mode : Mode for use in production and servicing.

When using the Jig RCU, it is required to set the VCR to the Jig RCU mode (the mode in which codes from the Jig RCU can be received). As both of the above two modes are stored in the EEPROM, it is required to set the VCR back to the User RCU mode each time that an adjustment is made or to check that the necessary operations have been completed. These modes can be set by the operations described below.

1.5.1 Setting the Jig RCU mode

(1) Unplug the power cord plug from the power outlet. (2) Press and hold the “REC” and “PAUSE” buttons on the VCR

simultaneously, while plugging the power cord plug into the power outlet. When the VCR is set to the Jig RCU mode, the symbols ( “ : ” ) in the time display of the FDP are turned off.

1.5.2 Setting the User RCU mode

(1) Turn off the power. (2) Press the “REC” and “PAUSE” buttons of the VCR simulta-

neously. Alternatively, transmit the code “80” from the Jig RCU.

1.6 Mechanism service mode

This model has a unique function to enter the mechanism into every operation mode without loading of any cassette tape. This function is called the “Mechanism service mode”.

1.6.1 How to set the “Mechanism service mode”

(1) Set the VCR to the Jig RCU mode (the mode in which codes

from the Jig RCU can be received). (2) Transmit the code “E5” from the Jig RCU. (3) Release the lug of the Cassette holder and then slide the

Cassette holder toward the direction where the Cassette

holder is loaded by manually. (4) The cassette holder lowers and, when the loading has com-

pleted, the mechanism enters the desired mode. When the VCR is set to the Mechanism service mode, the

symbols (“Timer”) in the FDP (LED) are blinked.

1.6.2 How to exit from the "Mechanism service mode"

(1) Unplug the power cord plug from the power outlet.

To Rear S Jack

board assembly

CN7103

TP106 PB.FM

To Front S Jack

board assembly

TP2254 A.REC.FM

VR2251 REC FM ADJ.

TP4001 CTL.P

TP2253 A.PB.FM

TP111 D.FF

Fig. 1-4-1a

Main board assembly

CP3001

CP4001

CN7001

To Adv. Jog/SW board assembly

1-9

Page 16

1.7 Maintenance and inspection

1.7.1 Cleaning

Regular cleaning of the transport system parts is desirable but practically impossible. So make it a rule to carry out cleaning of the tape transport system whenever the machine is serviced. When the video head, tape guide and/or brush get soiled, the playback picture may appear inferior or at worst disappear, resulting in possible tape damage.

Note:

Absolutely avoid sweeping the upper drum vertically as

•

this will cause damage to the video head.

(1) When cleaning the upper drum (especially the video head),

soak a piece of closely woven cloth with alcohol and while holding the cloth onto the upper drum by the fingers, turn the upper drum counterclockwise.

(2) To clean the parts of the tape transport system other than

the upper drum, use a piece of closely woven cloth or a cotton swab soaked with alcohol.

(3) After cleaning, make sure that the cleaned parts are com-

pletely dry before using the cassette tape.

A/C head

Video heads

Fig. 1-7-1a

1.7.2 Lubrication

With no need for periodical lubrication, you have only to lubricate new parts after replacement. If any oil or grease on contact parts is soiled, wipe it off and newly lubricate the parts.

Note:

See the “mechanism assembly” diagram of the “parts list”

•

for the lubricating or greasing spots, and for the types of oil or grease to be used.

1.7.3 Suggested servicing schedule for main components

The following table indicates the suggested period for such service measures as cleaning, lubrication and replacement. In practice, the indicated periods will vary widely according to environmental and usage conditions. However, the indicated components should be inspected when a set is brought for service and the maintenance work performed if necessary. Also note that rubber parts may deform in time, even if the set is not used.

System Parts name

Drum assembly A/C head Pinch roller arm assembly

Tape transport

Drive

Other

Full erase head Tension arm assembly Capstan motor (Shaft) Guide arm assembly Capstan motor Capstan brake assembly Main brake assembly Belt (Capstan) Loading motor Clutch unit Worm gear Control plate Rotary encoder

Operation hours

1000H

C,X C,X

C C C C C

2000H

C,X

C C C C C X X X X X X X X X

C : Cleaning X : Inspection or Replacement if necessary

1-10

Page 17

SECTION 2

MECHANISM

2.1 Before disassembling

2.1.1 Notes

This model’s mechanism relates closely to the rotary encoder and system control circuit (the rotary encoder is meshed with the control cam). The system control circuit detects the mechanism condition using the rotary encoder’s phase (internal switch phase). Therefore, the parts such as the rotary encoder, control plate, loading gear and control cam need to be installed correctly in order for the mechanism to operate properly. (For the mechanism phase adjustment, refer to the installation of each part.)

• For the disassembly procedure of the major parts of the main unit and notes, refer to the “section 1 disassembly”.

• Before using a soldering iron, be sure to disconnect the power plug from the AC outlet.

• Do not touch any of the adjustment points until a defect position is specified.

• When plugging or unplugging the connector, be sure not to damage the wire.

• Be sure the springs are hooked all the way around and in the correct direction.

• When performing repairs, take care not to damage a catch, etc.

2.1.3 Setting the mechanism assembling mode

The mechanism-assembling mode is provided with this mechanism. When disassembling and assembling, it is required to engage this mode. Set the mode by adopting the following procedures. (1) Remove the mechanism assembly using the disassembling

procedure.

(2) Turn gear (a) of the loading motor manually to set the mecha-

nism assembly to the eject end mode. Make sure that the main deck is connected to the guide hole (a) of the drive lever and the seal (a) of the main deck is connected to the mark “E” of the control plate. This condition is called the mechanism-assembling mode.

Seal (a)

“E” mark

CONTROL PLATE

Guide hole (a)

DRIVE LEVER

OK NG

not hooked all the

()

way around

Fig. 2-1-1a

2.1.2 Mechanism operation check

When the mechanism is operated without a cassette loaded, operate the mechanism in the mechanism service mode. (Refer to the "section 1 disassembly".)

LOADING MOTOR

Gear (a)

Unloading

Fig. 2-1-3a

2-1

Page 18

2.1.4 Layout of the main mechanism parts

Full erase head

Pole base assy

(supply side)

Tension arm assy

Tension arm base

Rec safety lever

T17

T16

T15

T14

Reel disk

(supply side)

Pole base assy

(take-up Side)

T13

Load gear assy

(take-up side)

T12

Idler arm

A/C head

B15

Fig. 2-1-4a

Direct gear

Fixing plate

Main brake assy

(take-up side)

T11

Ider gear 1/2

T10

Load gear assy

(supply side)

Pinch roller arm assy

Lid guide

Guide arm assy

Brake lever

Drive lever

Reel disk (take-up side)

Side frame(L)

Capstan motor

Capstan brake

Press lever

Control cam

B11

Belt

B14

B13

B12

B10

Loading motor assy

Fig. 2-1-4b

Clutch unit assy

Change lever

Load gear

Control plate

Tension arm lever

Side frame(R)

2-2

Earth spring(1)

Fig. 2-1-4c

Fig. 2-1-4d

Page 19

2.1.5 Disassembling procedure table

This table shows the order of parts removal when replacing each part. For replacement, remove the parts in the order of 1 to 13 shown in the table and install the parts in the reverse order. The symbol number before each part name shows the number in the figure “Layout of the main mechanism parts”. T and B on the right of each part name show the side from which the part should be removed (T: From the front of the mechanism, B: From the rear of the mechanism, T/B: From both sides).

Symbols and numbers

Removal parts

(Reference items)

Symbols and numbers

Replacement parts

2.1 Earth spring (1) T 1

2.1 Top frame T 2 1

2.1 Cassette holder T 3 1 2

2.1 Side frame (L) T 3 1 2

2.1Drive arm T51234

2.1 Side frame (R) T 3 1 2

2.2 A/C head T 1

T17

- FE head T/B 1

2.3 Guide arm assy T 1

2.3 Lid guide T 1

2.3

Pinch roller arm assy

T12

2.4Idler arm T4123

T11

2.4 Idler gear 1/2 T 5123 4

2.5 Main brake assy (T) T 6123 45

T10

2.5 Reel disk (T) T 7123 456

T16

2.5Tension arm T6123 45

T13

2.5 Reel disk (S) T 7123 45

T15

2.5Tension arm base T7123 45

-T-up head T 8123 45

-T-up lever T8123 45

2.5Brake lever T8123

T14

2.5Rec safety lever T7123456

B12

2.6 Press lever B 1

B11

2.6 Control cam B 2

B13

2.6 Capstan brake assy B 3

2.6 Loading motor assy B 4

B10

2.7 Belt B 1

B14

2.7 Capstan motor T/B 2

- Wire holder T/B 1

2.7 Fixing plate B 1

2.7 Load gear B 2

2.7

Loading gear assy(S)

B1 T1 T2

B5 T9 B8

B15

B7 B6

Loading gear assy(T)

2.7

- Pole base assy(S) T/B 4

- Pole base assy(T) T/B 5

- Load gear base B 5

2.7 Control plate B 6

-Drive lever T/B10123456

2.8 Clutch unit B 2

2.8 Direct gear B 3

- Change lever T/B 6 1 2

- Tension arm lever T/B 14 1 2 3 4 5

L1 - - L2 - R1 T6 T12 T11 T4 T10 T16 T15 B12B11B13 B9 B10 B2 B4 B3 B1 B5 B8 B15

Front(T)/Back(B) of mechanism

Number of removal steps

Earth spring (1)

Top frame

Cassette holder

Side frame (L)

Drive arm

Side frame (R)

Lid guide

Idler arm

Idler gear 1/2

Main brake (T)

Reel disk (T)

Tension arm

Tension arm base

Press lever

Control cam

Capstan brake assy

Loading motor assy

Belt

Fixing plate

Load gear

Loading gear assy (S)

T2 1

6 6 67 67

456

1 12 123

1 B3 B4

123

1234

12 345 78 9

1 12 345

6789 101112 13

Loading gear assy (T)

Control plate

Clutch unit

Direct gear

2-3

Page 20

2.2 Replacement of the main mechanism parts

2.2.1 Cassette holder

2.2.1.1 Removal

(1) Remove the screws (a) and (b). (2) Hold up the top frame, cassette holder assembly, drive arm

assembly and side frames (L/R) all together and remove them by releasing the hooks (a) and (b).

Screw (a)

Screw (b)

2.2.1.3 Disassembling

(1) Release hook (a) to remove the earth spring (1) from the

top frame.

(2) Release the catches (a) and (b) and pull the top frame in

the direction shown by the arrow (a) to remove it. (3) Pull out the side frame (R). (4) Pull out the cassette holder assembly and drive arm assem-

bly from the side frame (L).

Hook (a)

Catch (a)

Catch (b)

Hook (a)

Hook (b)

Fig. 2-2-1a

2.2.1.2 Installation (phase adjustment)

(1) Turn gear (a) of the loading motor assembly so that the main

deck connects to the guide hole (a) of the drive lever. (2) Hook the main deck to hooks (a) and (b). (3) Place the projection of the drive lever to section (a) of the

side frame (R) and install the cassette holder to the main

deck. Make sure that the bosses of the side frame (L/R) con-

nect with the holes (a) and (b) of the main deck. (4) Secure screws (a) and (b).

Screw (a)

Screw (b)

Hook (a)

Hook (b)

Hole

(a)

Section (a)

Hole (b)

Guide hole (a)

DRIVE LEVER

EARTH SPRING(1)

Arrow (a)

TOP FRAME

SIDE FRAME(L)

CASSETTE HOLDER Assembly

DRIVE ARM Assembly

SIDE FRAME(R)

Fig. 2-2-1c

2.2.1.4 Assembling (installation and phase adjustment)

(1) Turn gear (a) of the loading motor assembly so that the main

deck connects to the guide hole (a) of the drive lever.

(2) Place the projection of the drive lever on section (a) of the

side frame (R) and install the side frame (R) to the main deck. (3) Secure screw (b). (4) Place section (b) of the drive arm on the gear of the side

frame (R). Make sure that the pin of the door opener con-

nects with section (c) of the drive arm. (5) Place the drive arm on section (d) of the side frame (L) and

install the side frame (L) on the main deck. Be sure to con-

nect the earth spring (1) to the side frame (L). (6) Secure screw (a). (7) Turn gear (a) of the loading motor assembly until the drive

arm is vertical. (8) Place the slit of the side frame (L/R) at the foot of the cas-

sette holder assembly and install the cassette holder. (9) Place the top frame on the position guide (a) of the side

frame (L/R) and push it in the direction shown by the arrow

(a) for installation. (10) Hook the earth spring (1) to the hook (a) of the top frame.

2-4

Gear (a)

Fig. 2-2-1b

Page 21

SIDE FRAME(R)

Screw (b)

2.2.2 A/C head

2.2.2.1 Removal

(1) Remove screws (a) and (b). (2) Remove the A/C head together with the head base. (3) Remove the screws (c), (d) and (e) to remove the spring (a)

and the A/C head from the head base.

Section (a)

DRIVE LEVER

Cassette Holder Assembly

Screw (a)

Guide hole (a)

Gear (a)

Section (c)

Section

(b)

Screw (e)

Screw (c)

Spring (a)

Screw (a)

HEAD BASE

Screw (d)

A/C HEAD

Screw (b)

Fig. 2-2-2a

2.2.2.2 Installation (initial setting)

To install the A/C head to the head base, secure the screws in the order of (c), (d) and (e). To make the adjustment easy, temporarily elevate the A/C head.

SIDE FRAME(R)

DRIVE ARM(L)

Section (d)

Hook (a)

EARTH SPRING(1)

SIDE FRAME(L)

TOP FRAME

Fig. 2-2-1d

DRIVE ARM(R)

Position guide (a)

Arrow (a)

(Temporary height)

11mm

A/C HEAD

HEAD BASE

Fig. 2-2-2b

2-5

Page 22

2.2.3 Guide arm, pinch roller arm

2.2.3.1 Removal

(1) Remove the spring (a) from the hook (a) and detach the

guide arm assembly. (2) Release the catch (a) to remove the lid guide. (3) Remove the spring (b) from the hook (b) and detach the

pinch roller arm assembly.

2.2.4 Idler arm, idler gear 1/2

2.2.4.1 Removal

(1) Release the catches (a) and (b) to detach the idler arm. (2) Detach the idler gear 1/2.

IDLER ARM

Catch (b)

Pinch roller arm assembly

Hook (a)Guide arm assembly Spring (a)

Catch (a)

Spring (b)

PRESS LEVER

Hook (b)

LID GUIDE

Catch

(a)

IDLER GEAR 1/2

IDLER ARM

IDLER GEAR 2

IDLER GEAR 1

LID GUIDE

Guide arm assembly

2-6

Fig. 2-2-3a

Pinch roller arm assembly

PRESS LEVER

Fig. 2-2-4a

2.2.5 Main brake (T), brake lever, tension arm, reel disk (S/T), Rec safety lever

2.2.5.1 Removal

(1) Remove the spring (a). (Detach section (b) of the spring (a).) (2) Release the catch (a) to detach the main brake (T). (3) Release the catch (b) to detach the reel disk (T) and the

spacer. Lift up and turn section (b) of the brake lever counterclockwise

(4)

to remove the brake lever. (5) Remove the spring (b) from the hook (a). (6) Release the catch (c) to detach the tension arm. (7) Release the catch (d) to detach the reel disk (S) and the

spacer. (8) Remove the spring (c) from the hook (b). (9) Turn the tension arm base in the direction shown by arrow

(a) to release catch (e). Place the projections of the tension

arm base to the holes (a) to detach the tension arm base. (10) While releasing the catch (f), turn the Rec safety lever

counterclockwise to remove it.

Page 23

Tension arm assembly

Catch (d)

Catch (c)

Screw (a)

Loading motor assembly

Solder (a)

Slit washer (a)

Slit washer (b)

Catch (b)

Capstan brake assembly

CONTROL CAM

Slit washer (b)

PRESS LEVER

Capstan brake assembly

CONTROL CAM

Loading motor assembly

Spring (b)

Catch (c)

Hook (a)

Catch (d)

REEL DISK(S)

Main brake (T) assembly

Section (b)

Spring (a)

BRAKE LEVER

2.2.6 Press lever, control cam, capstan brake assembly, loading motor assembly

2.2.6.1 Removal

(1) Remove the slit washer (a) to detach the press lever. (2) Release the slit washer (b) to detach the control cam. (3) Release the catch (b) to detach the capstan brake assem-

bly. (4) Remove the solder (a). (5) Remove the screw (a). (6) Release the catches (c) and (d) to detach the loading motor

assembly.

Tension arm base assembly

REC SAFETY LEVER

Tension arm base assembly

Arrow (a)

Hole (a)

Catch (e)

Hole (a)

Hook (b)

Catch (a)

Tension arm assembly

Main brake (T) assembly

REEL DISK(T)

REEL DISK(S)

SPACER

REEL DISK(T)

Catch (b)

BRAKE LEVER

Spring (c) REC

SAFETY LEVER

Catch (f)

Fig. 2-2-5a

Fig. 2-2-6a

2-7

Page 24

2.2.6.2 Installation (phase adjustment)

(1) Attach the loading motor assembly to the main deck. (2) Secure the screw (a). (3) Solder the wire to section (a). (4) Arrange the wire along with the position guide (b). (5) Attach the capstan brake assembly to the main deck. (6) Place the main deck on the guide hole (a) of the control plate. (7) Place the main deck on the guide hole (b) of the drive lever. (8) Place the main deck no guide hole (c) of the control cam to

install the control cam.

(9) Move the capstan brake in the direction shown by the arrow

(a) to attach the press lever to the shaft (a). Make sure that the boss of the press lever fits in the control cam, and that the shaft (b) of the pinch roller arm assembly connects with the hole of the press lever.

(10) Attach slit washer (a) to shaft (a).

Wire (black)Wire (red)

Section (a)

Capstan brake assembly

Note:

• When replacing the worm bearing of the loading motor as-

sembly, attach it according to the following specification. If worm bearing is not attached correctly, a mechanism noise may occur. (See Fig. 2-2-6c)

LOADING MOTOR

WORM BEARING

6.8 ± 0.2 mm

Fig. 2-2-6c

2.2.7 Capstan motor, load gear, control plate

2.2.7.1 Removal

(1) Detach the belt. (2) Check that the FFC connector on the drum is disconnected. (3) Release the catch (a) to remove the FFC wire. (4) Remove the screws (a) to detach the capstan motor. (5) Remove the screws (b) to detach the fixing plate. (6) Release the catch (b) to detach the load gear. (7) Turn the load gear (S/T) in the loading direction to detach it. (8) Remove the control plate.

Screws (a)

Position guide (b)

DRIVE LEVER

Guide hole (b)

Arrow (a)

Screw (a)

CONTROL CAM

Shaft (a)

Guide hole (a)

Guide hole (c) Loading motor assembly

Shaft (a)

Shaft (b)

CONTROL PLATE

Catch (b)

Load gear (T) assembly

Load gear (S) assembly

LOAD GEAR FIXING PLATE

Capstan motor assembly

Screws (b)

BELT

2-8

PRESS LEVER

Fig. 2-2-6b

Slit washer (a)

LOAD GEAR

Catch (a)

Fig. 2-2-7a

FFC

Page 25

2.2.7.2 Installation (phase adjustment)

DIRECT GEAR

Spring (a)

CLUTCH UNIT

Slit washer (a)

(1) Place the main deck on the guide hole (a) of the tension arm

lever.

(2) Place the main deck on the guide hole (b) of the brake le-

ver. (3) Attach the control plate to align with the position guide (a). (4) Place the hole (c) of the load arm (T) on the pole base (T)

and the load gear (T) on the load gear base. (5) Place the hole (d) of the load arm (S) on the pole base (S)

and the load gear (S) on the load gear base. Be sure to align

the guide mark (e) of the load gear (T) to that of the load

gear (S). (6) Turn the load gear (S/T) in the unloading direction to place

the main deck on the guide hole (f) of the load gear (T). (7) Place the main deck on the guide hole (g) of the control plate. (8) Attach the load gear on the load gear base so that the con-

trol plate is placed on the edge (h) of the load gear. (9) Place the fixing plate on the shaft of the load gear base and

secure the screws (b).

2.2.8 Clutch unit assembly, direct gear

2.2.8.1 Removal

(1) Remove the slit washer (a) to detach the clutch unit assem-

bly.

(2) Remove the spring (a) and the direct gear.

POLE BASE(T)

Hole (c)

Load gear (T) assembly

Insertion direction

Guide hole (g)

Guide marks (e)

LOAD GEAR BASE

Load gear (T) assembly

CONTROL PLATE

Guide hole (f)

(From the top)

Load gear (S) assembly

Edge (h)

Position guide (a)

POLE BASE(S)

Hole (d)

Load gear (S) assembly

Screws (b)

FIXING PLATE

LOAD GEAR

Fig. 2-2-8a

Guide hole (b)

BRAKE LEVER

Fig. 2-2-7b

Guide hole (a)

TENSION ARM LEVER

2-9

Page 26

2.3 Mechanism timing chart

MECHANISM MODE

CONTROL PLATE MARK

POLE BASE

REEL LOCK

TENSION ARM

TENSION ARM LEVER

OFF

LOCK

FREE

OFF

PLAY

STOP

FF/REW

REV

OFF

REV SERCH /SLOW /STILL

STOP

REEL BRAKE

EJECT

PLAY

FOR SLOW /STILL

E P SL R ST B FR

FF /REW

(STOP MODE PRESS UP)

BRAKE LEVER

GUIDE ARM

PINCH ROLLER

CONTACT

CAPSTAN BRAKE

TU LEVER

DIRECT GEAR

Movements of a CONTROL PLATE

OFF

OFF2 OFF1

OFF

DIRECT

CLUTCH

(m/m)

0 5 15 20 25 30 35 40 45 50 5510

2-10

Page 27

SECTION 3

ADJUSTMENT

3.1 Before adjustment

3.1.1 Precaution

• The adjustments of this unit include the mechanism compatibility and electrical adjustments. During the performance of this work, be sure to observe the precautions for each type of adjustment.

• If there is a reference to a signal input method in the signal column of the adjustment chart, “Ext. S-input” means the Y/C separated video signal and “Ext. input” means the composite video signal input.

• Unless otherwise specified, all measuring points and adjustment parts are located on the Main board.

3.1.2 Required test equipments

• Color (colour) television or monitor

• Oscilloscope:

• Signal generator: RF / IF sweep / marker

• Signal generator: stairstep, color (colour) bar [NTSC]

• Recording tape

• Digit-key remote controller(provided)

wide-band, dual-trace, triggered delayed sweep

3.1.4

Color (colour) bar signal, color (colour) bar pattern

Color(colour) bar signal [NTSC]• Color(colour) bar pattern [NTSC]

•

Horizontal sync

White(75%)

100 IRE

40 IRE

White(100%)

Yellow

Cyan

Green

Magenta

Red

Blue

Burst

40 IRE

(75%)

Cyan

White

Q I Black

Yellow

White 100%

Green

Magenta

Red

Blue

3.1.5 Switch settings

When adjusting this unit, set the VCR mode and switches as described below.

• When using the Jig RCU, it is required to set the VCR to the Jig RCU mode (the mode in which codes from the Jig RCU can be received). (See "section 1 disassembly".)

Jig RCU [Data transmitting method]

Depress the “ ” ( 3 ) button after the data code is set.

3.1.3 Required adjustment tools

Roller driver Jig RCU Back tension cassette gauge Alignment tape(MHP) Alignment tape(MHP-L)

Roller driver

PTU94002

Alignment tape

(SP, stairstep, NTSC)

MHP

Jig RCU

PTU94023B

Alignment tape

(EP, stairstep, NTSC)

MHP-L

Mechanism compatibility

adjustment

Back tension cassette gauge

PUJ48076-2

: Used : Not used

Electrical

adjustment

CUSTOM CODE 43: A CODE

DATA CODE

INITIAL MODE

Fig. 3-1-5a Jig RCU [PTU94023B]

•

Set the switches as shown below unless otherwise specified on the relevant adjustment chart. The switches that are not listed below can be set as desired. If the VCR is not equipped with the functions detailed below, setup is not required.

AUTO PICTURE/VIDEO CALIBRATION/ B.E.S.T./D.S.P.C.

PICTURE CONTROL/SMART PICTURE VIDEO STABILIZER OFF TBC ON Digital 3R ON VIDEO NAVIGATION/TAPE MANAGER

BLUE BACK OFF

OFF

NORMAL/NATURAL

OFF

3-1

Page 28

3.1.6

Manual tracking mode (Auto tracking ON/OFF) setting

(1) In order to set to the manual tracking mode during tape

playback, press the “SP/EP(LP)” button on the remote control unit.

• Each press of the button switches the auto tracking ON or OFF.

• When the auto tracking is OFF, the monitor screen displays “AT: OFF”.

• When the manual tracking mode is set, the tracking is placed at the center position.

(2) Press “channel +/-” to adjust the tracking manually.

3.1.7 EVR adjustment

Some of the adjustments require the adjustment performed by the EVR system. The main unit have EEPROMs for storing the EVR adjustment data and user setups.

Notes:

• In the EVR adjustment mode, the value is varied with the channel buttons (+, –). The adjusted data is stored when the setting mode changes (from PB to STOP, when the tape speed is changed, etc.). Take care to identify the current mode of each adjustment item when making an adjustment.

• When changing the address setting in the EVR adjustment mode, use the Jig RCU or the remote controller having numeric keypad with which a numeric code can be directly input. The remote control code of the Jig RCU corresponds to each of the digit keys on the remote controller as follows.

Digit-key 0 1 2 3 4 5 6 7 8 9 Code 20 21 22 23 24 25 26 27 28 29

• As the counter indication and remaining tape indication are not displayed FDP during the EVR adjustment mode, check them on the TV monitor screen.

• When performing the EVR adjustment, confirm that the FDP indication is changed to the EVR mode, as shown below.

FDP

3.2 Mechanism compatibility adjustment Notes:

• Although compatibility adjustment is very important, it is not necessary to perform this as part of the normal servicing work. It will be required when you have replaced the A/C head, drum assembly or any part of the tape transport system.

• To prevent damaging the alignment tape in the compatibility adjustment, prepare a cassette tape (for self-recording/playback), perform a test on it by transporting it and making sure that the tape is not bent by the tape transport mechanisms such as in the guide rollers.(See Fig.3-2-2a.)

3.2.1 Tension pole position

Notes:

•

This adjustment must be performed every time the tension band is replaced.

Signal (A) •Back tension cassette gauge

Mode (B1)

(B2) • Eject end

Adjustment part (F) • Adjust pin [Mechansim assembly] Specified value (G)

[PUJ48076-2]

• PB

• 25 - 51 gf•cm (2.45 – 5 × 10

-3

Nm)

(1) Play back the back tension cassette gauge (A). (2) Check that the indicated value on the left side gauge is

within the specified value (G).

(3) If the indicated value is not within the specified value (G),

perform the adjustment in a following procedure.(See Fig.3-2-1a.)

1) Remove the top frame, cassette holder and side frames (L/R) all together. (See “section 2 mechanism”.)

2) Rotate the loading motor gear to move the control plate so that the triangular stamping to the left of the “P” stamping is aligned with the stamping (a) on the main deck. This positioning is mode (B1).

3) Adjust by turning the adjustment pin so that the tip of the tension arm is aligned with the stamping (b) on the main deck.

4) Rotate the reel disk (S) by about one turn clockwise and make sure that the round hole of the adjustment pin is located in the “OK” range. If it is outside this range, restart the adjustment from the beginning.

After completion of the adjustment, rotate the loading gear motor to return it to the mode (B2) position.

TENSION ARM

3-2

Fig. 3-1-7a EVR mode

Stamping(b)

ADJUST PIN

CONTROL PLATE

Stamping(a)

Fig. 3-2-1a

Page 29

3.2.2 FM waveform linearity

Signal (A1) •

(A2) • Mode (B) • PB Equipment (C) • Oscilloscope Measuring point (D) • TP106 (PB. FM) External trigger (E) • TP111 (D.FF) Adjustment part (F) • Guide roller [Mechanism assembly] Specified value (G) • Flat V.PB FM waveform Adjustment tool (H)

Alignment tape(SP, stairstep, NTSC) [MHP] Alignment tape(EP, stairstep, NTSC) [MHP-L]

• Roller driver [PTU94002]

(1) Play back the alignment tape (A1). (2) Apply the external trigger signal to D.FF (E), to observe

the V.PB FM waveform at the measuring point (D).

(3) Set the VCR to the manual tracking mode.

Make sure that there is no significant level drop of the V.PB

(4)

FM waveform caused by the tracking operation, with its generally parallel and linear variation ensured. Perform the following adjustments when required. (See Fig. 3-2-2b.)

(5) Reduce the V.PB FM waveform by the tracking opera-

tion. If a drop in level is found on the left side, turn the guide roller of the pole base assembly (supply side) with the roller driver to make the V.PB FM waveform linear. If a drop in level is on the right side, likewise turn the guide roller of the pole base assembly (take-up side) with the roller driver to make it linear. (See Fig. 3-2-2b.)

(6) Make sure that the V.PB FM waveform varies in parallel

and linearly with the tracking operation again. When required, perform fine-adjustment of the guide roller of the pole base assembly (supply or take-up side).

(7) Unload the cassette tape once, play back the alignment

tape (A1) again and confirm the V.PB FM waveform. After adjustment, confirm that the tape wrinkling does not

(8)

occur at the roller upper or lower limits. (See Fig. 3-2-2a.)

[Perform adjustment step (9) only for the models

equipped with SP mode and EP (or LP) mode.]

(9) Repeat steps (1) to (8) by using the alignment tape (A2).

Improper

Proper

• Proper waveform variation

• Improper waveform variation

Up Down

Roller driver

Guide roller (supply side)

Fig. 3-2-2b

3.2.3 Height and tilt of the A/C head Note:

• Set a temporary level of the height of the A/C head in advance to make the adjustment easier after the A/C head has been replaced. (See “section 2 mechanism”.)

Signal (A) • Mode (B) • PB Equipment (C) • Oscilloscope Measuring point (D1)

(D2) • TP4001 (CTL. P) External trigger (E) •TP111 (D.FF) Adjustment part (F) • A/C head [Mechanism assembly] Specified value (G)

Alignment tape(SP, stairstep, NTSC) [MHP]

• AUDIO OUT terminal

• Maximum waveform

(a) GUIDE ROLLER

(b) GUIDE POLE

Fig. 3-2-2a

(1) Play back the alignment tape (A). (2) Apply the external trigger signal to D.FF (E), to observe

the AUDIO OUT waveform and Control pulse waveform

at the measuring points (D1) and (D2) in the ALT mode. (3) Set the VCR to the manual tracking mode. (4) Adjust the AUDIO OUT waveform and Control pulse

waveform by turning the screws (1), (2) and (3) little by

little until both waveforms reach maximum. The screw (1)

and (3) are for adjustment of tilt and the screw (2) for azi-

muth.

Head base

(2)

A/C head

(3)

(1)

AUDIO OUT

CTL. P

Fig. 3-2-3a

3-3

Page 30

3.2.4 A/C head phase (X-value)

3.3 Electrical adjustment

Signal (A1) •

(A2) • Mode (B) • PB Equipment (C) • Oscilloscope Measuring point (D) • TP106 (PB. FM) External trigger (E) • TP111 (D.FF) Adjustment part (F) • Specified value (G) • Maximum V.PB FM waveform Adjustment tool (H)

Alignment tape(SP, stairstep, NTSC) [MHP] Alignment tape(EP, stairstep, NTSC) [MHP-L]

A/C head base [Mechanism assembly]

• Roller driver [PTU94002]

(1) Play back the alignment tape (A1). (2) Apply the external trigger signal to D.FF (E), to observe

the V.PB FM waveform at the measuring point (D). (3) Set the VCR to the manual tracking mode. (4) Loosen the screws (4) and (5), then set the Roller driver

to the innermost projected part of the A/C head. (See Fig.

3-2-4a.) (5) Rotate the roller driver so that the A/C head comes clos-

est to the capstan. From there, move the A/C head back

gradually toward the drum until the point where the FM

waveform is maximized for the second time, and then

tighten the screws (4) and (5) temporarily. (6) Play an alignment tape (A2) and set to the manual-track-

ing mode. (7) Fine-adjust A/C head base position to maximize the FM

waveform, and then tighten the screws (4) and (5) firmly. (8) Play alignment tapes (A1) and (A2) and confirm that the

FM waveforms are maximized when the tracking is at the

center position.

To the drum

Toward the capstan

Toward the drum

A/C head

Screw (5)

Roller driver

Screw (4)

Head base

To the capstan

Fig. 3-2-4a

Note:

The following adjustment procedures are not only necessary after replacement of consumable mechanical parts or board assemblies, but are also provided as references to be referred to when servicing the electrical circuitry. In case of trouble with the electrical circuitry, always begin a service by identifying the defective points by using the measuring instruments as described in the following electrical adjustment procedures. After this, proceed to the repair, replacement and/or adjustment. If the required measuring instruments are not available in the field, do not change the adjustment parts (variable resistor, etc.) carelessly.

3.3.1 Servo circuit

3.3.1.1 Switching point

Signal (A1) • Stairstep signal

Mode (B) • PB Equipment (C) • Oscilloscope Measuring point (D1) •

External trigger (E) • TP111 (D.FF) Adjustment part (F) • Jig RCU: Code “5A” Specified value (G) • 7.5 ± 0.5H Adjustment tool (H) • Jig RCU [PTU94023B]

(A2) •

(D2) • TP106 (PB. FM)

Alignment tape (EP,stairstep,NTSC) [MHP-L]

VIDEO OUT terminal (75Ø terminated)

(1) Play back the signal (A1) of the alignment tape (A2). (2) Apply the external trigger signal to D.FF (E) to observe

the VIDEO OUT waveform and V.PB FM waveform at the

measuring points (D1) and (D2). (3) Set the VCR to the manual tracking mode. (4) Adjust tracking so that the V.PB FM waveform becomes

maximum. (5) Set the VCR to the Auto adjust mode by transmitting the

code (F) from the Jig RCU. When the VCR enters the

stop mode, the adjustment is completed. (6) If the VCR enters the eject mode, repeat steps (1) to (5)

again. (7) Play back the alignment tape (A2) again, confirm that the

switching point is the specified value (G).

Trigger point

Switching point

V.sync

Alignment tape [SP, stairstep] played with the SP head

Waveform output

X-value adjustment point

Drum side Control head position Capstan side

Fig. 3-2-4b

3-4

Alignment tape [EP(LP), stairstep] played with the EP(LP) head

Maximum

V. rate

Fig. 3-3-1-1a Switching point

3.3.1.2 Slow tracking preset

Signal (A1) • Ext. input

(A2) • Color (colour) bar signal [NTSC]

Mode (B1) • S-VHS SP

(B2) • S-VHS EP Measuring point (D) • TV-Monitor Adjustment part (F) • Jig RCU: Code “71“ or “72” Specified value (G) • minimum noise Adjustment tool (H) • Jig RCU [PTU94023B]

Page 31

V. rate

Specified value (G1)

Specified value (G2)

(1) Record the signal (A2) in the mode (B1), and play back

the recorded signal. (2) Set the VCR to the manual tracking mode. (3) Set the VCR to the FWD slow (+1/6x) mode. (4) Transmit the code (F) from the Jig RCU to adjust so that

the noise bar becomes the specified value (G) on the TV

monitor in the slow mode. (5) Set the VCR to the Stop mode. (6) Confirm that the noise bar is (G) on the TV monitor in

the slow mode. (7) Repeat steps (3) to (6) in the REV slow (–1/6x) mode. (8) Repeat steps (1) to (7) in the mode (B2).

Note:

• For FWD slow (+1/6x) playback, transmit the code “08”

from the Jig RCU to enter the slow playback mode, and transmit the code “D0” for REV slow (–1/6x) mode.

3.3.2 Video circuit

3.3.2.1 EE Y/PB Y (S-VHS/VHS) level

Signal (A1) • Ext. input Mode (B1) • EE

Equipment (C) • Oscilloscope Measuring point (D) • Y OUT terminal (75Ø terminated) EVR mode (F1) • Jig code “57”

EVR address (F2)

Specified value (G) • 1.00 ± 0.05 Vp-p Adjustment tool (H)

(A2) • Color (colour) bar signal [NTSC]

• S-VHS SP

(B2) (B3) • VHS SP

• A : 11

• Jig code “21” twice

(F3) (F4) • Jig code “18” or “19” (Channel +/-)

• Jig RCU [PTU94023B]

(1) Set the VCR to the mode (B1) (2) Observe the Y OUT waveform at the measuring point (D). (3) Set the VCR to the EVR mode by transmitting the code

(F1) from the Jig RCU. (4) Set the EVR address to (F2) by transmitting the code (F3)

from the Jig RCU. (5) Transmit the code (F4) from the Jig RCU to adjust so that

the Y level of the Y OUT waveform becomes the speci-

fied value (G). (6) Release the EVR mode of the VCR by transmitting the

code (F1) from the Jig RCU again. (When the EVR mode

is released, the adjusted data is memorized.) (7) Record the signal (A2) in the mode (B2), and play back

the recorded signal. (8) Set the VCR to the manual tracking mode. (9) Repeat steps (1) to (5) in the mode (B2).

)Record the signal (A2) in the mode (B3), and play back

(

the recorded signal. (11)

Set the VCR to the manual tracking mode. (12)

Repeat steps (1) to (5) in the mode (B3).

3.3.3 Audio circuit Notes:

• GND (Ground) should be taken from the Tuner shield case.

3.3.3.1 Audio REC FM

Signal (A1) • Ext. input

Mode (B) • S-VHS EP Equipment (C) • Oscilloscope Measuring point (D) • TP2253 (A. PB. FM) External trigger (E) • TP111 (D.FF) Adjustment part (F) • VR2251 Specified value (G1)

• Audio: No signal

(A2) (A3) •

Video: Color (colour) bar signal [NTSC]

• 350 ± 50 mVp-p

(G2)

• More than 200 mVp-p

(1) Apply the external trigger signal to D.FF (E) to observe

the Audio PB FM waveform at the measuring point (D).

(2) Record the signal (A3) with no audio signal input in the

mode (B), and play back the recorded signal. (3) Set the VCR to the manual tracking mode. (4) If the A.PB FM level is not within the specified value (G1),

perform the adjustment in a following procedure. (5) Adjust the adjustment part(F) to become waveform level

of specified value(G1) in a channel with higher A. PB FM

waveform. (Adjust before recording, then confirm it by

playing back.) (6) If specified value(G1) is not obtained in step(5), adjust

the adjustment part(F) to become waveform level of

specified value(G2) in channel with lower A. PB FM

waveform.(Adjust before recording, then confirm it by

playing back.)

Fig. 3-3-3-1a Audio REC FM

H. rate

Fig. 3-3-2-1a EE/PB Y level

Y level

3-5

Page 32

Page 33

Page 34

JVC SERVICE & ENGINEERING COMPANY OF AMERICA

DIVISION OF JVC AMERICAS CORP.

Head office East Coast Midwest West Coast Atlanta Hawaii

Head office Montreal Vancouver

1700 Valley Road Wayne, New Jersey 07470-9976 10 New Maple Avenue Pine Brook, New Jersey 07058-9641

705 Enterprise Street Aurora, Illinois 60504-8149

5665 Corporate Avenue Cypress, California 90630-0024

1500 Lakes Parkway Lawrenceville, Georgia 30043-5857

2969 Mapunapuna Place Honolulu, Hawaii 96819-2040

JVC CANADA INC.

21 Finchdene Square Scarborough, Ontario M1X 1A7

16800 Rte Trans-Canadienne, Kirkland, Quebec H9H 5G7

13040 Worster Court Richmond, B.C. V6V 2B3

(973)317-5000 (973)396-1000 (630)851-7855 (714)229-8011 (770)339-2582 (808)833-5828

(416)293-1311 (514)871-1311 (604)270-1311

S40895-04

Printed in Japan

JVC HR-S5911U, HR-S5901 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

TABLE OF CONTENTS

Important Safety Precautions

SECTION 1

1.1 Manually removing the cassette tape

1.2 Removing the major parts

1.3 Emergency display function

1.4 Service position

1.5 Jig RCU mode

1.6 Mechanism service mode

1.7 Maintenance and inspection

SECTION 2

2.1 Before disassembling

2.2 Replacement of the main mechanism parts

2.3 Mechanism timing chart

SECTION 3

3.1 Before adjustment

3.2 Mechanism compatibility adjustment Notes:

3.3 Electrical adjustment