Sharp VC-A480NZ-X, VC-A280NZ-X, VC-A230NZ-X Service Manual

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Page 1

(VC-A230NZ/X)

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

SERVICE MANUAL

S99N9VC-A230N

VIDEO CASSETTE RECORDER

(VC-A280NZ/X,A480NZ/X)

VC-A230NZ/X VC-A280NZ/X

MODEL

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used.

CONTENTS

1. SPECIFICATIONS................................................................................................................. 3

2. DISASSEMBLY AND REASSEMBLY ................................................................................... 4

3. FUNCTION OF MAJOR MECHANICAL PARTS................................................................... 7

4. ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS.................. 9

5. ELECTRICAL ADJUSTMENT ............................................................................................. 28

6. MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE .............. 32

7. ELECTRICAL TROUBLESHOOTING ................................................................................. 38

8. BLOCK DIAGRAM............................................................................................................... 49

9. SCHEMATIC DIAGRAM AND PWB FOIL PATTERN......................................................... 57

10. REPLACEMENT PARTS LIST............................................................................................ 71

11. EXPLODED VIEW OF MECHANISM PARTS..................................................................... 78

12. PACKING OF THE SET ...................................................................................................... 82

VC-A480NZ/X

Page

SHARP CORPORATION

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

PRECAUTIONS IN PART REPLACEMENT

When servicing the unit with power on, be careful to the section marked white all over. This is the primary power circuit which is live.

When checking the soldering side in the tape travel mode, make sure first that the tape has been loaded and then turn over the PWB with due care to the primary power circuit. Make readjustment, if needed after replacement of part, with the mechanism and its PWB in position in the main frame.

(1) Start and end sensors: Q701 and Q702

Insert the sensor’s projection deep into the upper hole of the holder. Referring to the PWB, fix the sensors tight enough.

(2) Photocoupler: IC901

Refer to the symbol on the PWB and the anode marking of the part.

(3) Cam switches A and B: D708 and D705.

Adjust the notch of the part to the white marker of the symbol on the PWB. Do not allow any looseness.

(4) Take-up and supply sensors: D711 and D712.

Be careful not to confuse the setting direction of the parts in reference to the symbols on the PWB. Do not allow any looseness.

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1. SPECIFICATIONS

Format: VHS PAL/NTSC standard

Video recording system: Rotary, slant azimuth two heads helical scan system

Video signal: PAL colour or monochrome (CCiR system B/G) signals

Recording/playing time: 240 min max. with SHARP E-240 tape (PAL: SP mode)

Tape width: 12.7mm

Tape speed: 23.39 mm/s (PAL: SP mode)

Antenna: 75 ohm unbalanced

Receiving channel: VHF Channel NZ1 - NZ11, UHF Channel E21 - E69(VC-A230NZ/A280NZ/A480NZ)

RF converter output signal: UHF Channel E21 - E69 Adjustable preset to E3(VC-A230NZ/A280NZ/A480NZ)

Power requirement: AC230V ± 15%(NZ) ,AC240V ± 10%(X) , 50Hz

Power consumption: Approx. 16W

Operating temperature: 5°C to 40°C

Storage temperature: –20°C to 55°C

Weight: Approx. 2.9 kg

Dimensions: 360 mm (W) x 256 mm (D) x 92 mm (H)

Output: 1.0 Vp-p, 75 ohm

S/N ratio: 45 dB (PAL-SP)

Horizontal resolution: 250 lines (PAL-SP)

Output: Line -8 dBs/1k ohm

S/N ratio: 43 dB (SP mode)

Frequency responce: 80 Hz ~ 10 kHz (SP mode)

Accessories included: 75 ohm coaxial cable

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

480 min max. with SHARP E-240 tape (PAL: LP mode) 160 min max. with SHARP T-160 tape (NTSC: SP mode) 480 min max. with SHARP T-160 tape (NTSC: EP mode)

11.70 mm/s (PAL: LP mode)

33.35 mm/s (NTSC: SP mode)

16.67 mm/s (NTSC: LP mode) (Playback only)

11.12 mm/s (NTSC: EP mode)

VHF Channel AU0 - AU12, UHF Channel AU28 - AU69(VC-A230X/A280X/A480X) UHF Channel AU28 - AU69 Adjustable preset to AU37(VC-A230X/A280X/A480X)

VIDEO

Input: 1.0 Vp-p, 75 ohm

AUDIO 0 dBs = 0.775 Vrms

Input: Line -8 dBs/47k ohm

80Hz ~ 5Hz (LP/EP mode) Operation manual

Infrared remote control Guarantee Card Battery

As part of our policy of continuous improvement, we reserve the right to alter design and specifications without notice.

Note: The antenna must correspond to the new standard DIN 45325

(IEC 169 - 2) for combined UHF/VHF antenna with 75 ohm connector.

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

2. DISASSEMBLY AND REASSEMBLY

2-1 DISASSEMBLY OF MAJOR BLOCKS

TOP CABINET : Remove 2 screws 1. FRONT PANEL : Remove button and knob 2.

Remove 2 screws 3 and 7 clips 4.

PWB HOLDER : Remove 2 screws 5. OPERATION : Remove 1 screw 6. PWB SHIELD ANGLE : Remove 1 screws 7 with shield angle. MECHANISM/ : Remove 1 screw 8, 1 screw 9, 2 MAIN PWB screws 0, 2 screws q. Remove 1

screw w with antenna terminal cover. Remove 1 screw e with top cabinet fix angle.

ANTENNA TERMINAL COVER

MECHANISM/ MAIN PWB ASSEMBLY

TOP CABINET

SHIELD ANGLE

H/A SHIELD TOP

PWB HOLDER

FRONT PANEL

TOP CABINET FIX ANGLE

MAIN FRAME

OPERATION PWB

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2-2 DISASSEMBLING THE MECHANISM/MAIN PWB ASSEMBLY

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

1. When removing the mechanism from the main PWB, remove the antenna cover 1 screw 1, and remove the antenna cover. Remove the PWB bottom plate 1 screw 2. Remove the FFC cable (AA, AD, AH) 3 which connecting the PWB and the mechanism. Take out vertically the mechanism so that it does not damage the adjacent parts.

CASSETTE HOUSING

2. Removing the mechanism and cassette housing. Remove 2 screws 4 fixing the cassette housing to the mechanism, and remove the cassette housing.

MECHANISM CHASSIS

MAIN PWB

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

2-3 CARES WHEN REASSEMBLING

INSTALLING THE CASSETTE HOUSING

When the cassette housing is installed on the mechanism, the initial setting is essential condition. There are two initial setting methods, namely electrical and mechanical.

1. Electrical initial setting

So as to perform initial setting of mechanism execute the Step 1 of Installation of cassette housing. After ascertaining the return to the initial setting position (*1) install the

Pulley feed gear

Screwdriver

Tilt mark (*1)

cassette housing. (Conditions: When mechanism and PWB have been installed)

2. Mechanical initial setting

Feed the pulley feed gear of loading motor with screw driver. After ascertaining the return to the initial set position (*1) install the cassette housing in the specified position. (This method is applied only for the mechanism.)

Casecon drive gear

Drive angle of cassette housing

INSTALLING THE MECHANISM ON PWB

Lower vertically the mechanism, paying attention to the mechanism edge, and install the mechanism with due care so that the parts are not damaged. So as to fix the mechanism to the main PWB install two housings. (Fit the antenna cover to one of them. For other, fix the vicinity of loading motor and solder joint side of main PWB.) Connect again the FFC cable (AA-MH, AD-ME, AH-MH) between the mechanism and the main PWB.

END SENSOR

REC TIP SW

PARTS WHICH NEED PARTICULAR CARE

When installing the mechanism chassis on the PWB unit, take care so as to prevent deformation due to contact of mechanism chassis with REC TIP SW.

AE CONNECTOR

AC CONNECTOR

START SENSOR

AL CONNECTOR

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3. FUNCTION OF MAJOR MECHANICAL PARTS (TOP VIEW)

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

1715

No. Function

1 Full erase head 2 Supply pole base ass’y 3 Tension arm ass’y 4 Idler wheel ass’y 5 Pinch drive lever ass’y 6 Supply reel disk 7 Supply main brake ass’y 8 Take-up main brake ass’y 9 Pinch drive cam

10 A/C Head ass’y

No. Function

11 Reverse guide lever ass’y 12 Casecon drive gear 13 Take-up reel disk 14 Pinch roller lever ass’y 15 Drum ass’y 16 Loading motor 17 Drum motor 18 Take-up pole base ass’y

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

FUNCTION OF MAJOR MECHANICAL PARTS (BOTTOM VIEW)

19 20

No. Function

19 Slow brake 20 Master cam 21 Capstan D.D. motor 22 Reel belt

No. Function

23 Clutch lever 24 Limiter pulley ass'y 12 Casecon drive gear 26 Shifter

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

4. ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS

The explanation given below relates to the on-site general service (field service) but it does not relates to the adjustment and replacement which need high-grade equipment, jigs and skill. For example, the drum assembling, replacement and adjustment service must be performed by the person who have finished the technical courses.

4-1 MECHANISM CONFIRMATION ADJUSTMENT JIG

So as to perform completely the mechanism adjustment prepare the following special jigs. So as to maintain the initial performance of the machine the maintenance and check are necessary. Utmost care must be taken so that the tape is not damaged. If adjustment needs any jig, be sure to use the required jig.

No. Jig ltem Part No. Code Configuration Remarks

This cassette torque meter is used for check-

1. Torque Cassette Meter JiGVHT-063 CZ

JiGTG0090 CM

Torque Gauge

JiGTG1200 CN

3. Torque Gauge Head JiGTH0006 AW

ing and adjusting the torque of take-up for measuring tape back tension.

These Jigs are used for checking and adjusting the torque of take-up and supply reel disks.

4. Torque Driver JiGTD1200 CB

Master Plane Jig and Reel Disk Height

5. Adjusting Jig

JiGRH0002 BR JiGMP0001 BY JiGSG2000 BS

Tension Gauge

JiGSG0300 BF

Pinch pressing force

7. JiGADP003 BK

measuring jig Reverse guide height

adjusting box driver

JiGDRiVER11055

VROCPSV CK

10. Alignment Tape VROUBZFS (VC-A230NZ/X,

A280NZ/X)

Guide roller height

11. JiGDRiVERH-4 AP

adjustment drive

X value adjustment

12. JiGDRiVER-6 BM

gear type screw driver Reverse Guide Height

13. JiGRVGH-F18 BU

Adjusting Jig

When fixing any part to the threaded hole using resin with screw, use the jig. (Specified torque 5 kg)

These Jigs are used for checking and adjusting the reel disk height.

There are two gauges used for the tension measurements, 300 g and

2.0kg. This Jig is used with the tension

gauge. Rotary transformer clearance adjusting jig.

This Jig is used for height adjustment of the reverse guide (for reverse guide height adjustment).

This screwdriver is used for adjusting the guide roller height.

For X value adjustment

This Jig is used for height adjustment of the reverse guide.

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Maintained

Parts

Guide roller ass’y Sup guide shaft Reverse guide Slant pole on pole base Full erase head A/C head

Upper and lower drum ass’y

Capstan D.D. motor Pinch roller

Reel belt

500 hrs.

1000 hrs.

1500 hrs.

2000 hrs.

Possible symptom

encountered

Lateral noises Head occasionally blocked

color and beating Small sound or sound

distortion Poor S/N ratio, no color

Poor flatness of the envelope with alignment tape

No tape running, uneven color

No tape running, tape slack

No tape running, tape slack, no fast forward/ rewind motion

Remarks

Abnormal rotation or significant vibration requires replacement.

Clean tape contact part with the specified cleaning liquid.

Clean tape contact area with the specified cleaning liquid.

Clean rubber and rubber contact area with the specified cleaning liquid.

Tension band ass’y Loading motor

Idler ass’y Limiter pulley Supply/take-up main brake levers

Screen swaying Cassette not loaded or

unloaded No tape running, tape

slack

Tape slack

Replace the roller of the cleaner

AHC (Automatic Head Cleaner)

when it wears down. Just change the AHC roller assembly for new one.

NOTE : Part replacement. : Cleaning : Apply grease <Specified> Cleaning liquid Industrial ethyl alcohol

* This mechanism does not need electric adjustment with variable resistor. Check parts. If any deviation is found,

clean or replace parts.

Video head cleaning procedure

1. Apply one drop of cleaning liquid to the cleaning paper with the baby oiler.

2. Gently press the cleaning paper against the video head to fix your finger, and move the upper drum so that each head is passed to and from 5 times (do not move the cleaning paper).

3. Wipe with the dry cleaning paper.

Notes :

• Use the commercially available ethanol of Class 1 as cleaning liquid.

• Since the video head may be damaged, do not move up

Gently press the cleaning paper to fix with your finger, and rotate the upper drum to clean. Move to and from 5 times for each head. (Do not move the cleaning paper.)

Rotate the upper drum with one hand.

and down the cleaning paper.

• Whenever the video head is cleaned, replace the cleaning paper.

• Do not apply this procedure for the parts other than the video head.

Parts Code Description Code ZPAPRA56-001E Cleaning Paper AW ZOiLR-02-24TE Babe Oiler (Spoit) AH

Page 11

REMOVING AND INSTALLING THE CASSETTE HOUSING

• Removal

1. In the cassette removing mode, remove the cassette.

2. Unplug the power cord.

3. Remove in the following numerical order. a) Remove two screws 1. b) Slide and pull up the cassette housing control.

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Notes:

1. When fitting the S/E sensor holder to the cassette controller frame L/R, take care.

2. Misengagement of teeth of casecon drive gear and drive angle gear causes malfunction. (The cassette cannot be set, load and ejection are repeated).

3. In the case when you use the magnet screw driver, never approach the magnet driver to the A/C head, FE head, and drum.

4. When installing or removing, take care so that the cassette housing control and tool do not contact the guide pin or drum.

5. After installing the cassette housing control once perform cassette loading operation.

TO RUN A TAPE WITHOUT THE CASSETTE HOUSING CONTROL ASSEMBLY

1. Remove the full-surface panel.

2. Short-circuit TP801.

3. Plug in the power cord.

4. Turn off the power switch.

(The pole bases move into U.L.position.)

5. Open the lid of a cassette tape by hand.

6. Hold the lid with two pieces of vinyl tape.

7. Set the cassette tape in the mechanism chassis.

8. Stabilize the cassette tape with a weight (500g) to

prevent floating.

9. Turn on the power switch.

10. Perform running test.

Figure 4-1.

• Reassembly

1. Before installing the cassette housing control, shortcircuit TP801 provided at the center (when facing to the main PWB), press the eject button. The casecon drive gear turns and stops when the positioning mark appears. Engage two teeth of casecon drive gear with the three teeth of casecon drive angle gear, and set on the mechanism chassis as shown below.

Casecon drive gear

Casecon drive angle gear

500g

Weight to prevent float (500g)

Mechanism chassis

Figure 4-3.

Note:

The weight should not be more than 500g. To take out the cassette tape.

1. Turn off the power switch.

2. Take out the cassette tape.

Figure 4-2.

2. Install in the reverse order of removal.

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

REEL DISK REPLACEMENT AND HEIGHT CHECK

• Removal

1. Remove the cassette housing control assembly.

2. Pull the tension band out of the tension arm ass'y.

3. Remove the Supply/Take-up main brake ass'y.

4. Open the hook at the top of the reel disk, and remove the reel disk.

Note:

Take care so that the tension band ass'y and main brake ass'y (especially soft brake) are not deformed.

Tension arm ass'y

Supply main brake ass'y

Tension band ass'y

Take-up main brake

4. Assemble the Supply main brake ass'y.

Notes:

1. When installing the reel disk, take due care so that the tension band ass'y is not deformed and grease does no adhere.

2. Do not damage the Supply main brake ass'y. Be careful so that grease does not adhere to the brake surface.

• Reassembly (Take-up reel disk)

1. Clean the reel disk shaft and apply grease (SC-141) to it.

2. Align the phase of the reel disk to that of the reel relay gear and to install a new take-up reel disk onto the shaft.

3. Check the reel disk height and reassemble the take-up main brake ass'y.

Note:

1. Take care so that the Take-up main brake ass'y is not damaged. Take care so that grease does not adhere the brake surface.

2. After reassembly, check the video search rewind back tension (see page 15), and check the brake torque (see page 17).

ass'y

Supply reel disk

Figure 4-4.

Note:

When the tension band ass'y is pressed in the direction of the arrow for removal, the catch is hard to be deformed.

• Height checking and adjustment Note:

1. Set the master plane with due care so that it does not contact the drum.

2. When putting the master plane, shift the reverse guide a little in the loading direction. Care must be taken since excessive shift results in damage.

Take-up reel disk

Master plane Reverse

Take-up reel disk

Supply reel disk Cassette lock

release shaft

guide Position pin

Figure 4-6.

Figure 4-5.

• Reassembly (Supply reel disk)

1. Clean the reel disk shaft and apply grease (SC-141) to it.

2. Match the phases of reel disk and reel relay gear, and set the new reel disk.

3. After checking the reel disk height, wind the tension band ass'y around the reel disk, and insert into the hole of tension arm ass'y.

Note:

• Check that the reel disk is lower than part A but higher than part B. If the height is not correct, readjust the reel disk height by changing the poly-slider washer under the reel disk.

Page 13

Note:

Whenever replacing the reel disk, perform the height checking and adjustment.

Master plane

10 ± 0.2mm

Reel disk

Reel disk height adjusting jig

Mechanism chassis

Figure 4-7.

CHECKING AND ADJUSTMENT OF TAKE-UP TORQUE IN FAST FORWARD MODE

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Setting

1. Set a torque gauge to zero on the scale. Place it on the take-up reel disk.

2. Press the FF button.

3. To calculate the remaining capacity of the play back mode, slowly rotate the supply reel disk, and then shift it into the forward mode.

• Checking

1. Turn the torque gauge slowly (one rotation every 2 to 3 seconds) by hand in the CW direction.

2. Make sure that the indication of torque gauge is not less than 30mN·m (306gf·cm).

Torque gauge

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Notes:

1. Hold the torque gauge by hand so that it is not moved.

2. Do not keep the reel disk in lock state. Do not allow longtime measurement.

CHECKING AND ADJUSTMENT OF TAKE-UP TORQUE IN REWIND MODE

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Setting

1. Set a torque gauge to zero on the scale. Place it on the supply reel disk.

2. Press the rewind button.

3. To calculate the remaining capacity, slowly rotate the take-up reel disk, and then shift it into the rewind mode.

• Checking

1. Turn the torque gauge slowly (one rotation every 2 to 3 seconds) by hand in the CCW direction.

2. Make sure that the indication of torque gauge is not less than 30mN·m (306gf·cm).

Torque gauge

30mN·m (306gf·cm) or more

CCW

The gauge is held at its maximum value. (Red mark)

30mN·m (306gf·cm) or more

Idler ass'y

The gauge is held at its maximum value. (Red mark)

Figure 4-8.

• Adjustment

1. If the FF winding-up torque is less than the specified value, clean the capstan D.D. motor pulley, reel belt, and limiter pulley with cleaning liquid, and check again.

2. If the torque is less than the set value, replace the reel belt.

Supply reel disk

Idler ass'y

Figure 4-9.

• Adjustment

1. If the rewind winding-up torque is less than the specified value, clean the capstan D.D. motor pulley, drive belt, and limiter pulley with cleaning liquid, rewind again, and check the winding-up torque.

2. If the winding-up torque is still out of range, replace the drive belt.

Page 14

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Notes:

1. Hold the torque gauge by hand so that it is not moved.

2. Do not keep the reel disk in lock state. Do not allow longtime measurement.

CHECKING AND ADJUSTMENT OF TAKE-UP TORQUE IN RECORD/PLAYBACK MODE

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Turn off the power switch.

• Open the cassette torque meter lid, and fix it with tape.

• Load the cassette torque meter into the unit.

• Put the weight (500g) on the cassette torque meter.

• Turn on the power switch.

• Press the REC button, and set LP picture record mode.

Set value LP6.9 ± 2.5mN⋅m (70 ± 25gf⋅cm)

CHECKING AND ADJUSTMENT OF TAKE-UP TORQUE IN VIDEO SEARCH REWIND MODE

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Setting

Press the playback button and rewind button to set the video search rewinding mode.

• Checking

Place the torque gauge on the supply reel disk, and turn it counterclockwise very slowly (one rotation every 1 to 2 seconds) and check that the torque is within the set value

14.0 ± 3.9mN⋅m. (144 ± 40gf⋅cm)

Torque gauge

CCW

500g

Cassette torque meter

Figure 4-10.

• Checking

1. Make sure that value is within the setting 6.9±2.5mN·m (70±25gf·cm).

2. The winding-up torque fluctuates due to variation of rotation torque of limiter pulley ass'y. Read the center value of fluctuation as setting.

3. Set the LP record mode and make sure that the windingup torque is within setting.

• Adjustment

If the playback winding-up torque is not within the setting, replace the limiter pulley assembly.

Note:

When the torque cassette is set, put a weight (500g) to prevent rise. When the cassette torque meter is taken out. Turn off the power switch.

Supply reel disk

Figure 4-11.

Note:

Surely put the torque gauge on the reel disk to measure. If the torque gauge is raised, accurate measurement is impossible.

• Adjustment

If the rewinding playback winding-up torque is not within the setting, replace the limiter pulley assembly.

Note:

The winding-up torque fluctuates due to variation of rotation torque of supply reel disk. Read the center value of fluctuation as setting.

Page 15

CHECKING THE VIDEO SEARCH REWIND BACK TENSION

• Remove the cassette housing control assembly.

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Checking

1. After pressing the play button, press the rewind button, and set the video search rewind mode.

2. Place the torque gauge on the take-up reel disk, and turn it counterclockwise very slowly (one rotation every 2 to 3 seconds) and check that the torque is within the set value 3.4±1.5mN⋅m (35±15gf⋅cm).

Torque gauge

CCW

Take-up reel disk

Pinch roller

Capstan shaft

Tension gauge adapter

Tension gauge

8.8 ~ 11.8 N (900 - 1,200gf)

Figure 4-13.

1. Detach the pinch roller from the capstan shaft. Do not separate excessively. Or the pinch lever and pinch double action lever may disengage.

2. Engage the tension gauge adapter with the pinch roller shaft, and pull in the arrow direction.

3. Gradually return the pinch roller, and measure the pulling force when the pinch roller contacts the capstan shaft.

4. Make sure that the measured value is within setting 8.8 to 11.8 N (900 to 1,200gf).

Figure 4-12.

Notes:

Set the torque gauge securely on the take-up reel disk. If it is not secure, the measurement will be incorrect.

CHECKING THE PINCH ROLLER PRESSURE

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Checking

Press the play button to set the playback mode.

CHECKING AND ADJUSTMENT OF TENSION POLE POSITION

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Setting

1. Turn off the power switch.

2. Open the cassette tape (E-180), and fix with tape.

3. Set the cassette tape in loading state.

4. Put the weight (500g) on the cassette tape.

5. Turn on the power switch.

6. Make the adjustment with the beginning of a E-180 tape.

(E-180)

500g

Weight to prevent float (500g)

Figure 4-14.

• Checking

1. Set a cassette tape, push the REC button to place the unit in the SP record mode. Now check the tension pole position.

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

2. Visually check to see if the right edge of the tension pole is within the 2.3 ± 0.25 mm from the right edge of the Sup guide shaft.

Tension pole adjuster adjusting range

Tension pole adjuster

Sup guide shaft

Tension pole

2.3 ± 0.25

Make the adjustment with the beginning of a E-180 tape.

Figure 4-15.

At left side from the center line

2.3 ± 0.25

Figure 4-16.

Insert the slotted screwdriver in the tension pole adjuster, and rotate counterclockwise.

90°

Figure 4-18.

Adjust so that the delta mark of tension pole adjuster is within 90° range (left, right).

CHECKING AND ADJUSTMENT OF RECORD/ PLAYBACK BACK TENSION

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Setting

1. Turn off the power switch.

2. Open the torque cassette meter and fix with tape.

3. Set the cassette tape in loading state.

4. Put the weight (500g) on the cassette torque meter.

5. Turn on the power switch.

At right side from the center line

2.3 ± 0.25

Figure 4-17.

Insert the slotted screwdriver in the tension pole adjuster, and rotate clockwise.

500g

Weight to prevent float (500g)

Cassette torque meter

Figure 4-19.

• Checking

1. Push the REC button to place the unit in the SP record mode.

2. At this time ascertain that the back tension is within the setting (36.5 to 52g·cm) by seeing the indication of torque cassette meter.

Page 17

• Adjustment

1. If the indication of torque cassette meter is lower than the setting, shift the tension spring engagement to the part A.

2. If the indication of torque cassette meter is higher than the setting, shift the tension spring engagement to the part B.

Tension arm

Tension spring

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

• Checking the brake torque at the take-up side

Torque gauge

Take-up reel disk

CCW

Figure 4-20.

CHECKING THE BRAKE TORQUE

• Checking the brake torque at the supply side

Torque gauge

CCW CW

Supply reel disk

CCW: 2.9~9.8mN⋅m (30~100gf⋅cm) CW: 4.9~13.7mN ⋅m (50~140gf⋅cm)

Figure 4-21.

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Setting

1. Set a torque gauge to zero on the scale. Place it on the supply reel disk.

2. Switch from the FF mode to the STOP mode.

3. Disconnect the power cord.

• Checking

Turn the torque gauge at a rate of about one turn/2 sec in the CW direction/CCW direction with respect to the supply reel disk so that the reel disk and torque gauge pointer rotate at equal speed, and make sure that the value is within the setting (CW direction: 4.9 to 13.7mN·m (50 to 140gf·cm); CCW direction: 2.9 to 9.8mN·m (30 to 100gf·cm).

CCW: 4.9~13.7mN⋅m (50~140gf⋅cm) CW: 3.9~10.8mN⋅m (40~110gf ⋅cm)

Figure 4-22.

• Remove the cassette housing control assembly.

• After short-circuiting TP801 provided at the center (facing to the main PWB), plug in the power cord.

• Setting

1. Switch from the FF mode to the STOP mode.

2. Disconnect the power cord.

3. Set a torque gauge to zero on the scale. Place it on the take-up reel disk.

• Checking

1. Turn the torque gauge at a rate of about one turn/2 sec in the CCW direction/CW direction so that the reel disk and torque gauge pointer rotates at equal speed and make sure that the value is within the setting (CCW direction: 4.9 to 13.7mN·m (50 to 140gf·cm), CW direction: 3.9 to 10.8 mN·m (40 to 110gf·cm).

2. Adjustment of the brake torque at the supply side and the take-up side

• Unless the supply side brake torque or take-up side brake torque is within the setting, clean the felt surface of reel disk (supply, take-up) brake lever, check again the brake torque.

• If value cannot be set within the setting yet, replace the main brake ass'y or main brake spring.

Page 18

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

REPLACEMENT OF A/C (Audio/Control) HEAD

1. Remove the cassette housing control assembly.

2. In unloading state unplug the power cord.

• Removal

1. Remove the screws 123, Azimuth screw, Tilt screw.

2. Unsolder the PWB fitted to the A/C head.

Notes:

1. When replacing, never touch the head. If you touched, clean with the cleaning liquid.

2. When removing the screw 3, take care so that the spring may out.

Tilt screw

Azimuth screw

Height screw

Spring

3. Align the left end of gear of A/C head plate with the punched mark of chassis, tentatively tighten the screws 1 and 2 so as to ensure smooth motion of A/C head plate. Tentative tightening torque must be 0.15 to 0.20 N·m (1.5 to 2.0kgf·cm).

Height screw

Left end of A/C head plate gear

Punched line mark on chassis

Figure 4-25.

Note:

1. If the screws 1 and 2 are tighten tentatively too loose, the azimuth and height of A/C head may change when they are finally tightened. Therefore care must be taken.

2. After completion of A/C head be sure to adjust tape running. (Execute the running adjustment by the method described in Page 20, 21.)

Figure 4-23.

• Replacement

1. Solder the removed PWB to the new head assembly.

2. Adjust the height from the A/C head plate (lower surface) to the A/C head base to 10.8mm with slide calipers. (3 places of azimuth screw section, tilt screw section and hight screw section) (See the figure below.)

Solder

New A/C head ass'y

A/C head PWB

❈Never touch the head

A/C head base

Figure 4-24.

10.8mm10.8mm

Page 19

A/C HEAD HEIGHT ROUGH ADJUSTMENT

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

HEIGHT ADJUSTMENT OF REVERSE GUIDE

• Setting

Azimuth screw

Height screw

500g

Weight to prevent float (500g)

Tilt screw

Cassette tape

Mechanism chassis

Figure 4-26.

1. Set the cassette tape in the unit.

2. Press the PLAY button to put the unit in the playback mode.

3. Roughly adjust the height of the A/C head by turning the height screw until the tape is in the position shown below.

A/C head

1. Adjust the height from the mechanism chassis to the reverse guide lower flange to 13.38 mm, using the reverse guide height adjustment jig, in tape loading state. (Refer to Figure 4-28 (a) (b).)

Reverse guide Reverse guide height adjusting jig

Mechanism chassis

(a)

Reverse guide height adjusting jig

13.38mm

(b)

Figure 4-28.

2. Rotate counterclockwise the reverse guide height adjustment nut 1/10 turn. (For height adjustment use the reverse guide height adjustment box driver (JiGDRiVER

11055)).

Box driver

CCW

Height adjusting nut

Tape

0.3mm

Figure 4-27.

• Adjustment

Adjust the height screw visually so that the control head is visible 0.3mm below the bottom of the tape.

Figure 4-29.

3. Set the tape, and check for tape crease near the reverse guide in the playback mode. If crease is found, turn the reverse guide adjustment nut to remove crease. (As for crease check refer to Figure 4-

30.)

500g

Weight to prevent float (500g)

Mechanism chassis

Reverse guide

Capstan motor shaft

Fixing guide

An example of crease near the reverse guide

* Check for crease from the A direction.

Figure 4-30.

Page 20

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

ADJUSTMENT OF TAPE DRIVE TRAIN

1. Tape run rough adjustment

1 Remove the cassette housing control assembly. 2 After shortcircuiting TP801 provided at the center

(facing to the main PWB), plug in the power cord.

3 Check and adjust the position of the tension pole.

(See page 15.)

4 Check and adjust the video search rewind back

tension. (See page 15.)

5 Connect the oscilloscope to the test point for PB

CHROMA envelope output (TP201). Set the synchronism of the oscilloscope to EXT. The PB CHROMA signal is to be triggered by the head switching pulse (TP202).

6 Set the alignment tape (VROCPSV) to play. (Put a

500g weight on the cassette tape to prevent lift of cassette tape.)

Guide roller

500g

Weight of 500g

Figure 4-31.

Cassette Tape

Notes:

1. Previously set the tracking control in the center position, and adjust the envelop waveform to maximum with X value adjustment nut. Thereby the tape run rough adjustment is facilitated.

2. Especially the outlet side envelope waveform must have higher flatness.

Figure 4-32.

2. Adjustment of A/C head height and azimuth

1 Perform the initial setting of A/C head position by the

method stated in "Page 18 Replacement 3".

2 Connect the oscilloscope to the audio output termi-

nal.

3 Using the alignment tape in which 1 kHz linear audio

signal has been recorded, adjust the height screw so as to get max audio output.

4 Using the alignment tape in which 6 kHz linear audio

signal has been recorded, adjust the azimuth screw so as to get max audio output.

5 Repeat the above adjustment steps 3 and 4 a

couple of times. Finally take the step 4 again.

7 Press the tracking button (+), (–) and change the

envelope waveform from max to min and from min to max. At this time make sure that the envelope waveform changes nearly parallel.

8 Unless the envelope waveform changes nearly par-

allel, adjust the height of supply side and take-up side guide roller so that the envelope waveform changes nearly parallel. (For envelop adjustment procedure refer to Figure 4-35.)

9 Turn the tilt screw to remove the tape crease at the

fixing guide flange. Playback the tape and check for tape crease at the fixing guide flange. (1)If there is no tape crease

Turn the tilt screw clockwise so that tape crease appears once at the flange, and then return the tilt screw so that the crease disappears.

(2)If there is tape crease

Turn counterclockwise the tilt screw so that the tape crease disappears. (Reference) If the tilt screw is turned clockwise crease appears at the lower flange.

For X value adjustment Adjust the X value, turning the geartype screwdriver.

Figure 4-33.

3. Tape run adjustment 1 Connect the oscilloscope to PB CHROMA envelope

output test point, set oscilloscope sync to EXT, trigger-input the PB CHROMA signal (head switching pulse).

2 Rough adjustment of X value

Tentatively fix A/C head arm screws 1 and 2 by the method described in Page 18 "Replacement 3". Playback the alignment tape (Use VROUBZFS for VC-A230NZ/X,A280NZ/X) and shortcircuit TP802. As a result the auto-tracking is automatically cancelled, so that the X value adjustment mode is set. Move the A/C head with the X value adjustment gear driver (JiGDRiVER-6) by the method shown in Figure 4-33, and adjust the A/C head so as to get the maximum envelope waveform. (Note: When the A/ C head is adjusted, adjust so that the maximum envelop waveform is obtained nearest the position of initial setting made in Page 18.)

Page 21

3 Next, press the tracking button (+), (–) and change

CH-1 CH-2

the envelope waveform from max to min and from min to max. At this time adjust the height of supply and take-up side guide roller with the adjustment driver (JiGDRiVERH-4) so that the envelope waveform changes nearly parallel.

4 If the tape is lifted or sunk from the helical lead

surface, the PB CHROMA envelope waveform appears as shown in Figure 4-35.

5 Press the tracking button (+), (–) and make sure that

the envelope waveform changes nearly parallel.

6 Finally check tape crease near the reverse guide. If

tape crease is found, remove it as stated in Page 19 "HEIGHT ADJUSTMENT OF REVERSE GUIDE" item 3.

Supply side

Take-up side Supply side Take-up side

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

PB CHROMA Envelope

Head switching pulse

Figure 4-34.

4. A/C head X value adjustment 1 Tentatively fix A/C head arm screws 1 and 2 by the

method described in Page 18 "Replacement 3".

2 Playback the alignment tape (Use the VROUBZFS

for VC-A230NZ/X,A280NZ/X) and shortcircuit TP802. As a result the auto-tracking is automatically cancelled, so that the X value adjustment mode is set.

3 Move the A/C head with the X value adjustment gear

When the tape is below the helical lead.When the tape is above the helical lead.

Adjustment

Supply side guide roller rotated in clockwise direction (lowers guide roller) to flatten envelope.

Take-up side guide roller rotated in clockwise direction (lowers guide roller) to flatten envelope.

Figure 4-35.

driver by the method shown in Figure 4-33, and adjust the A/C head so as to get the maximum envelope waveform. (Note: At this time adjust so as to get the maximum envelope waveform nearest the A/C head position which has been set in case of X value rough adjustment as stated in Page 20, 3- 2.)

4 Tighten finally the screws 1 and 2. Be sure to

tighten at first the screw 1 and then the screw 2. Final tightening torque is 0.6N·m (If the screw 2 is tightened first, the X value may deviate.)

5 Adjust the playback switching point (Refer to the

electric adjustment method.)

6 Playback the self-picture-recorded tape, and check

the flatness of envelope waveform and sound.

Supply side guide roller rotated in counterclockwise direction (raises guide roller) to make the tape float above the helical lead. The supply side guide roller is then rotated in the clockwise direction to flatten the envelope.

Take-up side guide roller rotated in counterclockwise direction (raises guide roller) to make the tape float above the helical lead. The take-up side guide roller is then rotated in the clockwise direction to flatten the envelope.

Notes:

When the A/C head X value adjustment is performed, be sure to perform at first X value rough adjustment (refer to Page 20, 3-2).

Figure 4-36.

Page 22

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

REPLACEMENT OF THE CAPSTAN D.D. (DIRECT DRIVE) MOTOR

• Remove the mechanism from the main PWB (refer to Page 5 item 1. When removing the mechanism from the main PWB").

• Removal (Follow the order of indicated numbers.)

1. Remove the reel belt 1.

2. Remove the three screws 2.

REPLACEMENT OF DRUM D.D. MOTOR

1. Set the ejection mode.

2. Withdraw the main power plug from the socket.

• Removal (Perform in numerical order.)

1. Disconnect the FFC cable 1.

2. Unscrew the D.D. stator assembly fixing screws 2.

3. Take out the D.D. stator assembly 3.

4. Unscrew the D.D. rotor assembly fixing screws 4.

5. Take out the D.D. rotor assembly 5.

Capstan D.D. motor

control PWB

Reel belt

Capstan D.D. motor

Figure 4-37.

• Reassembly

1. Taking care so that the capstan shaft does not contact the mechanism chassis, set its position on the mechanism chassis, and then install with the three screws.

2. Install the reel belt.

Notes:

1. After installing the capstan D.D. motor, be sure to rotate the capstan D.D. motor and check the movement.

2. Set the tape, and check for the tape crease near the reverse guide in the playback mode. Adjust the A/C head and azimuth as stated in Page 20 Replacement 2. If crease is found, adjust as stated in Page 19 "HEIGHT ADJUSTMENT OF REVERSE GUIDE".

Notes:

1. In removing the D.D. stator assembly, part of the drum earth spring pops out of the pre-load collar. Be careful not to lose it.

2. Install, so that the D.D. rotor ass'y and upper drum ass'y mounting direction check holes align. (Align the upper drum dent with the rotor hole.)

3. Be careful not to damage the upper drum or the video head.

4. Protect the hole elements from shock due to contact with D.D. stator or D.D. rotor ass'y.

5. After installation adjust the playback switching point for adjustment of servo circuit.

D.D. stator ass'y

D.D. rotor ass'y

FFC

Upper drum

Figure 4-38.

Page 23

REPLACING THE UPPER AND LOWER DRUM ASSEMBLY

• Replacement (Perform in the numerical order) 1 Remove the motor as stated in Page 22 D.D. motor

replacement.

2 Remove the drum earth brush ass’y 2. 3 Remove the drum base 3 from the upper and lower

drum assembly 1.

[Cares when replacing the drum]

1. Be careful so that the drum earth brush is not lost.

2. Do not touch directly the drum surface.

3. Fit gently the screwdriver to the screws.

4. Since the drum assembly is an extremely precise assembly, it must be handled with utmost care.

5. Make sure that the drum surface is free from dust, dirt and foreign substances.

6. After replacing the drum be sure to perform the tape running adjustment. After that, perform also the electrical adjustment.

• Playback switching point adjustment

• X-position adjustment and check

• Standard and x-3 slow tracking adjustment

7. After replacing the drum clean the drum.

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

ASSEMBLING OF PHASE MATCHING MECHANISM COMPONENTS

• Assemble the phase matching mechanism components in the following order.

1. Assemble the pinch roller assembly and pinch drive cam.

2. Mounting the shifter (on the back of the mechanism chassis).

3. Mounting the master cam (on the back of the mechanism chassis).

4. Assemble the connection gear, slow brake and loading motor parts.

• Pinch drive cam and pinch roller assembling

method.

(Place the following parts in position in numerical order.)

(1)Reverse drive lever 1 (2)Reverse guide spring 2 (3)Reverse guide lever ass’y 3 (4)Reverse guide height adjusting nut 4 (5)Pinch drive cam 5 (6)Pinch roller ass’y 6 (7)Open lever 7

Figure 4-40.

Figure 4-39.

Page 24

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

1Insert Reverse Guide Lever Ass’y

Insert reverse guide lever ass'y

2 Insert pinch drive cam

Turn the reverse guide lever assembly counterclockwise to the stopper.

Fit the pinch drive cam so that the notch of pinch drive lever assembly aligns with the half-round notch of chassis.

Pinch drive lever ass'y

Figure 4-41-1.

2Insert Pinch Roller/Pinch Double Action Lever Ass’y.

Pinch Roller Double Action Lever Ass'y

Phase Matching Point 2

Align here.

Fit the pinch drive cam so that the notch of pinch drive cam aligns with the dent of pinch drive lever assembly.

3Insert Open Lever.

Open lever

Figure 4-41-2.

Figure 4-41-3.

Page 25

INSTALLING THE SHIFTER

Capstan D.D. motor

Reel pulley

Drum

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

1. Make sure that the loading gear is at the PHASEMATCHING point 1 as shown below.

2. Install, paying attention to insert point 5 and release point 3.

3. For the phase matching at the insert point 1, see the PHASE-MATCHING point 2 as shown below.

4. Finally fix the inserts 1 and 4.

(Bottom side of mechanism chassis)

Figure 4-42.

Insert point 3

Insert point 2

Shaft 1

Phase-Matching point 2

Round mark

Sifter

Loading gear (T)

Insert point 1

Shaft 1

Half round notch

Insert point 4

Phase-matching point 1

Rotation point 2

Shaft 1

Figure 4-43.

Shaft 2

Release point 3

Insert point 5

Page 26

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

INSTALLING THE MASTER CAM (AT REAR SIDE OF MECHANISM CHASSIS)

1. Make sure beforehand that the shifter is at the point as shown below.

2. Place the master cam in the position as shown below.

E ring (XRESJ30-06000)

Master cam

Fully turn clockwise

Fully turn counterclockwise

REPLACEMENT OF LOADING MOTOR

• Removal

Apply grease

Face the wide tooth side ward

Figure 4-44-1.

Note:

See the figure below for the phase matching between the master cam and the casecon drive gear.

3. Finally fix with the E ring.

Master cam

Casecon drive gear

Half-round notch

Round mark

When installing the master cam, align the casecon drive gear round mark with the half-round notch of master cam.

No grease

Figure 4-45.

• Replacement

Remove the loading motor, and install the replacement loading motor as shown below.

+0.2

10.2 mm

–0.2

Figure 4-44-2.

Figure 4-46.

The loading motor pressing-in must be less than 147 N (15 kgf). Adjust the distance between motor and pulley to 10.2

+0.2

mm).

–0.2

Page 27

ASSEMBLY OF CASSETTE HOUSING

1. Drive Gear and R Drive angle ass’y

Apply grease

2. Synchro Gear, Drive Gear L and Drive Gear R

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

MSPRT0381AJFJ

Apply grease

Figure 4-47.

Top surface should be free from scratches or soil.

Drive angle

LANGF9592AJFW

Drive gear R

Frame

Figure 4-48.

Page 28

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

5. ELECTRICAL ADJUSTMENT

Notes:

• Before the adjustment:

Electrical adjustments discussed here are often required after replacement of electronic components and mechanical parts such as video heads. Check that the mechanism and all electric components are in good working condition prior to the adjustments, otherwise adjustments can not be completed.

• Instruments required:

Colour TV monitor Dual-trace oscilloscope

Alignment tape (VROCPSV), (VROATSV)

Blank video cassette tape DC voltmeter Screwdriver for adjustment

Servicing precautions When the IC710 (E2PROM) has been replaced, make the following reprogramming. Depending on models, the IC710 (E2PROM) has been factory-adjusted for it’s memory function. It’s therefore necessary to reprogram the memory function for the model in question. Note that the servo circuit requires readjustments for the head switching point, slow and still modes.

• Location of controls and test points

TP101

P201

R1626

T1601

MAIN

TP802

TP801

Figure 5-1.

Page 29

SERVO CIRCUIT ADJUSTMENT

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

ADJUSTMENT OF HEAD SWITCHING POINT

Measuring instrument

Mode Cassette Test point Pin(2) of P201 (H.SW.P.) to CH-1,

Specification 6.5 ± 0.5H (lines)

1. Remove the front panel and play the alignment tape. (VROCPSV)

2. Press the PLAY button. (Playback picture on the monitor screen.)

3. Make for a moment short-circuit P802, located at the front side on the main PWB. Press the PLAY button again. Be sure that all the fluorescent display tubes light up into the TEST mode.(See Note below) Be sure the " > " appears in the fluorescent display tubes flashing (about 1Hz) into the auto PG adjustment operating.

Note:

When the manual PG adjustment, observe the waveform with an oscilloscope and make adjustment FF or REW button so that the specification.

4. Stop the " > " appears in the flashing of fluorescent display tubes at adjusted.

5. Press the STOP button in the return to manual mode.

6. Make this checking of waveform on the oscilloscope screen be as shown inFigure 5-2. just after the head switching point have been adjusted.

Note:

1 Set-up of TEST mode.

When the adjustment of HEAD SWITCHING POINT, AUTO TRACKING function is invalid.

2 When the cassette housing control ass’y is removed,

set-up of mechanism operating mode.

1) Replug the AC power cord it a few minutes later.

2) Make a short-circuit P801 located at the front side on the main PWB, and press both ([) and (]) tracking control button at the same time to set the tracking in center.

3) AC power cord is plugged in.

4) Then set-up of mechanism operating mode is completed, replug the AC power cord a few minutes later.

Dual-trace oscilloscope Colour TV monitor

Playback Alignment tape (VROCPSV)

VIDEO OUT jack to CH-2 (CH-1 trigger slope switch at (+), Internal trigger at CH-1 side.)

CH-1: 1V/div 50µs/div CH-2 VIDEO OUT

CH-1 HEAD SWITCHING PULSE

6.5 ± 0.5H (lines)

Figure 5-2.

CH-2: 2V/div 50µs/div

V-sync.

ADJUSTMENT OF PAL SYSTEM SP/LP SLOW TRACKING PRESET

Measuring instrument

Mode Cassette

Control Tracking control buttons (]) or ([) Specification Minimized noise on

1. Have the unit to receive a good TV broadcast or feed a video signal to the VIDEO IN jack. (See note 2 below)

2. Set the tape speed in SP mode by using the remote control and record the signal on tape.

3. Rewind and play the tape where signal was recorded in above step.

4. Press the SLOW button on the remote control, and playback the recorded portion in the slow mode.

5. Make for a moment short-ciucuit P802, located at the front side on the main PWB. Be sure that all the fluorescent display tubes light up into the TEST mode.

6. Look at the monitor screen and adjust the (]) or ([) TRACKING buttons so that the there is noise disappears from the screen.

7. Press the STOP button to return to normal mode.

8. Play the tape a few seconds then press the SLOW button again and make sure there is on noise in the screen.(For the LP mode put adjustment at the same adjustmet way as SP mode.)

Notes:

1 Self-recorded tape means a cassette whose program

was recorded by the unit being adjusted.

2 The TV program will not be recoded if RCA or 21pin

plugs are pluged in the AUDIO/VIDEO input terminals.

3 The tracking control is enabled with the (])/([)

button.

Colour TV monitor

Playback Self-recorded tape

(SP/LP mode)(See Note below)

monitor screen

Page 30

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

ADJUSTMENT OF PAL SYSTEM FV (False Vertical Sync) OF STILL PICTURE

Measuring instrument

Mode Cassette

Control Tracking control buttons (]) or ([) Specification No vertical jitter of picture

1. Play a cassette which was recorded by the unit in SP mode.

2. Press the PAUSE/STILL button to freeze the picture.

3. Look at the monitor screen and adjust (]) or ([) TRACKING buttons so that the vertical jitter of the picture to be minimized.

4. Play and freeze the self-recorded tape in SP mode and make sure vertical jitter of the picture is not noticeable.(For the LP mode put adjustment at the same adjustment way as SP mode.)

Note:

1 Self-recorded tape is a cassette whose program was

recorded by the unit being adjusted.

2 The tracking control is enabled with the (])/([)

button.

Colour TV monitor

Playback still Self-recorded tape (SP mode)

(See Note below 1)

6. Look at the monitor screen and adjust the (]) or ([) TRACKING buttons so that the there is noise disappears from the screen.

7. Press the STOP button to return to normal mode.

8. Play the tape a few seconds then press the SLOW button again and make sure there is on noise in the screen.(For the E P mode put adjustment at the same adjustmet way as SP mode.)

Notes:

1 Self-recorded tape means a cassette whose program

was recorded by the unit being adjusted.

2 The TV program will not be recoded if RCA or 21pin

plugs are pluged in the AUDIO/VIDEO input terminals.

3 The tracking control is enabled with the (])/([)

button.

ADJUSTMENT OF NTSC SYSTEM FV (False Vertical Sync) OF STILL PICTURE

Measuring instrument

Mode Cassette

Colour TV monitor

Playback still Self-recorded tape (SP mode)

(See Note below 1)

ADJUSTMENT OF NTSC SYSTEM SP/EP SLOW TRACKING PRESET

Measuring instrument

Mode Cassette

Control Tracking control buttons (]) or ([) Specification Minimized noise on

1. Have the unit to receive a good TV broadcast or feed a video signal to the VIDEO IN jack. (See note 2 below)

2. Set the tape speed in SP mode by using the remote control and record the signal on tape.

3. Rewind and play the tape where signal was recorded in above step.

4. Press the SLOW button on the remote control, and playback the recorded portion in the slow mode.

5. Make for a moment short-ciucuit P802, located at the front side on the main PWB.

Be sure that all the fluorescent display tubes light up

into the TEST mode.

Colour TV monitor

Playback Self-recorded tape

(SP/EP mode)(See Note below)

monitor screen

Control Tracking control buttons (]) or ([) Specification

1. Play a cassette which was recorded by the unit in SP mode.

2. Press the PAUSE/STILL button to freeze the picture.

3. Look at the monitor screen and adjust (]) or ([) TRACKING buttons so that the vertical jitter of the picture to be minimized.

4. Play and freeze the self-recorded tape in SP mode and make sure vertical jitter of the picture is not noticeable.(For the EP mode put adjustment at the same adjustment way as SP mode.)

Note:

1 Self-recorded tape is a cassette whose program was

recorded by the unit being adjusted.

2 The tracking control is enabled with the (])/([)

button.

No vertical jitter of picture

Page 31

ADJUSTMENT OF VCO CIRCUIT

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Measuring instrument

Mode

Test point

Control T1601 VCO control Specification 2.5±0.5V

1.Set VCR to Power On mode.

2.Press "Test key" mode.

3.Press channel E12 of R/C at 87.5% mod. and 70dBµ of antenna terminal (Caution: Do not press SW button on set. Use R/C.)

4.Connect a DC voltmeter to test point shown in table.

5.Look at the voltmeter and adjust T1601 at voltage specified.

Colour TV monitor DC voltmeter

RF signal at E12-CH (by VHF signal generator)

Pin(1)(AF1) of TP101. Pin(4)(GND.) of TP101.

ADJUSTMENT OF RF AGC

Measuring instrument

Colour TV monitor Oscilloscope

Mode

Test point

Control R1626 RF AGC control Specification ——————————————

1.Receive E12 channel signal at 87.5% mod. and 70dBµ of antenna signal.

2.Connect an oscilloscope to test point shown in table.

3.Look at the oscilloscope and adjust R1626 counterclockwise until sync-tip becomes from noisy to clear just before shrink position.

4.Press "Test key " mode and auto tune to receive signal.

RF signal at E12-CH (by VHF signal generator)

Pin(3) Signal of TP101. Pin(4) GND of TP101.

Page 32

VC-A230NZ/X

S sensor

Open

Mode detection inside

sensor A

111000000

Mode detection inside

sensor B

011110110

CS/EJ

ULD

PU1

PU2

VSRPBSLOWFFSTOP

Cam graph E

60 120 180 240 300 380

G mechanical timing

Mode check

Cam mark

Mode detection outside

(D709 SW B)

Mode detection inside

(D708 SW A)

0 19.812 81 179 233200 265 282 316 334

10.354 12.812

CA/END

CS/EJ

PU1

PU2

VSR

PB SLOW

STOP

Mode detection outside

Mode detection inside

S sensor

EJ UL PU PU2 VSR PB SLW FF STP

011

000

001

1 or 0

Loading motor turns in reverse

direction and master cam

counterclockwise.

CASSETTE INSERTION STOP

Cassette

inserting

Full-

YES

Unloading

Loading motor starts in normal

direction and master cam counter

clockwise.

Does mechanism position sw.

come off within 2.5 sec.?

Are start/end sensors at low level

before cassette insertion ?

Insert cassette.

Double action rack slides.

Drum motor starts.

Tape loading.

Pinch roller comes into contact.

Cam switch is at PB position.

Loading motor stop.

Is drum FG pulse outputted ?

End

Cassette is ejected and loading

motor stops.

Start sensor close.

(Cassette is judged

caught halfway.)

(Cassette LED or some other part

is judged defective.)

VC-A280NZ/X VC-A480NZ/X

MECHANISM OPERATION FLOWCHART

6. MECHANISM OPERA TION FLOWCHART AND TROUBLESHOOTING GUIDE

Page 33

STOP REC/PLAY

PLAY STILL

PLAY VSR

VSR PLAY

Capstan motor turns

counterclockwise.

Is take-up reel sensor signal

outputted ?

End

Press REC/PLAY key.

Picture appears.

Unloading

Set capstan motor to search

speed.

End

Press FF key.

PLAY VSF

REC/PLAY STOP

Capstan motor turns in

reverse direction.

Loading motor turns in

counterclockwise direction

and master cam clockwise.

Slow brake comes into

contact with capstan motor.

Slow brake

pressing

Cam switch is at STILL

position.

End

Capstan motor stops.

Press STOP key.

Loading motor stops.

End

Stop capstan motor.

YES

Press STILL key.

Pinch

roller

releasing

Idler

swinging

Pinch

roller

pressing

Loading motor turns

clockwise and master

cam counterclockwise.

Turn capstan motor in

reverse direction.

Turn loading motor

counterclockwise.

Cam switch is at VSR

position.

Set capstan motor to search

speed.

Is take-up reel sensor signal

outputted ?

Press REW key.

Release pinch roller.

Cam switch is at PU2 position.

Cam switch is at PU1 position.

Stop loading motor.

Press pinch roller.

Loading motor turns clockwise.

Release the supply auxiliary

brake.

Stop loading motor.

End

Unloading

Cam switch is at PB position.

End

Press PLAY Key.

Loading motor turns counter-

clockwise and master cam

clockwise.

Capstan motor turns

counterclockwise. PB speed.

YES

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Page 34

VC-A230NZ/X

STOP FF/REW

STOP CASSETTE EJECT

FF/REW STOP

FF/REW

operation

Brake

function

Turn capstan motor in

normal or reverse direction,

after the remaining tape has

been detected.

Loading motor turns counter-

clockwise.

Cam switcn is at Stop

position.

End

Press STOP key.

Press FF/REW key.

Stop capstan motor.

Loading motor stops.

End

Loading motor turns in clockwise and master cam

counterclockwise.

4 supply reel pulses

outputted ?

Does the take-up

reel pulse output

two edges?

Capstan motor turns

clockwise.

Loading motor turns

clockwise.

Cam switch is at

Eject position.

Loading motor

stops.

Capstan motor

stops.

Press EJECT key.

Tape

unloading

Cassette

eject

End

Capstan motor turns

clockwise.

Capstan motor turns

counterclockwise in about

2 seconds.

Stop loading motor.

Capstan motor turns in reverse direction.

Cam switch is at UL position.

YES

VC-A280NZ/X VC-A480NZ/X

Page 35

MECHANISM TROUBLESHOOTING

1. FF/REW FAILURE (NO TAPE WINDING)

Press FF key.

NO NO NO

YES

YES YES

Is master cam at

FF position ?

Does loading

motor operate?

Modes changing

smoothly through

cam switch ?

Loading motor

control system

in trouble.

Are Vco 12V and

Vcc 5V applied ?

Replace the

capstan motor.

Replace the idler

ass’y.

Replace the reel

sensor.

Is voltage applied

to loading motor ?

Loading motor is

damaged. Replace

it.

Voltage supply

system in trouble.

Mode sensor

system in trouble

or master cam

malpositioned.

Voltage supply

system in trouble.

Does capstan

motor turn in FF (or

REW) direction ?

Are idler wheel

ass’y and reel disk

in mesh ?

Is the pulse

outputted from reel

sensor ?

The cassette tape

is presumably

damaged.

2. REC/PLAY FAILURE (MODE RELEASE)

NO NO NO

YES

YES YES

Is the master cam

at PB position ?

Does loading

motor operate ?

Modes changing

smoothly through

cam switch ?

Loading motor

control system

in trouble.

Are Vco 12V and

Vcc 5V applied ?

Replace the

capstan motor.

Replace the idler

ass’y.

Replace the reel

sensor.

Is voltage applied

to loading motor ?

Loading motor is

damaged. Replace

it.

Voltage supply

system in trouble.

Voltage supply

system in trouble.

Does capstan

motor turn ?

Are idler wheel

ass'y and reel disk

in mesh ?

Is the pulse

outputted from reel

sensor ?

Check main PWB.

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Page 36

VC-A230NZ/X

Replace loading motor block.

3. WINDING FAILURE AT VSR 4. UNUSUAL SOUND IN EACH MODE

Is Playback

function normal ?

Master cam

shifting to VSR

position ?

Go to 2. REC/

PLAY FAILURE

routine.

Replace idler

gear ass’y.

Replace limiter

pulley ass’y.

Replace reel

sensor.

Go to 2. REC/

PLAY FAILURE

routine.

Are idler wheel

ass’y and supply

reel disk in mesh ?

Is supply reel disk

winding torque

normal ?

Is pulse outputted

from reel sensor?

Check main PWB.

YES

Press REW key.

4-i) Unusual sound in cassette

insertion and ejection mode

Is unusal sound heard during

cassette coutrol running ?

Unusual sound heard with pinch

roller lever going up or down ?

Is unusual sound heard during

loading/unloading ?

Check pinch roller drive cam, pinch roller

drive lever and reverse guide for their actions.

Replace damaged one with new one.

Replace cassette control ass’y.

VC-A280NZ/X VC-A480NZ/X

Page 37

VC-A230NZ/X

YES

Replace capstan motor.

4-ii) Unusual sound in FF/REW mode

Is reel disk height as specified ?

Thrust gap found at reel disk ?

Drive system out of contact with any

part on main PWB ?

Turn capstan motor by hand.

Unusual sound heard ?

Check drive system’s gears for

damage. Replace damaged gear

with new one.

• Reel disk

• Limiter pulley ass’y

• Idler wheel ass’y

Check reel disk and main chassis.

And replace defective parts.

Adjust reel disk height.

Rearrange the parts on main PWB.

VC-A280NZ/X VC-A480NZ/X

Page 38

VC-A230NZ/X

FLOW CHART NO.1 POWER TROUBLESHOOTING(1)

No power

Unplug the AC power cord.

Replug it a few minutes later.

See FLOW CHART NO.2 POWER

TROUBLESHOOTING(2)

YES

Is the fuse good?

Replace fuse.

Is AT 5V voltage line normal?

Check primary circuit.

Are AT 42V, AT 23V, AT 12.6V, AT -25V

and filament voltage lines normal?

Check each rectifier circuits and

short-circuit of secondary circuit.

Is "H" level applied at pin(1) of

IC701?

Check peripheral circuits of Q706

and P-FAIL (L) signal line etc.

Check system control circuit(IC701).

FLOW CHART NO.2 POWER TROUBLESHOOTING(2)

In case of Fuse(F901) blown out.

Replace F901, Q901, IC902 and

R904, check D901, D902, D903 and

D904 as a result of check, if poor,

replace at the same time.

Check short-circuit or leak of D921,

D922, D923, D903, D924, D925,

D926 and secondary circuit.

FLOW CHART NO.3 POWER TROUBLESHOOTING(3)

In case of abnormal noise(sound)

Check D921, D922, D923, D924,

D925 and D926.

The Check D921, D922, D923,

D924, D925 and D926 as a result

of check, if poor replace.

FLOW CHART NO.4 POWER TROUBLESHOOTING(4)

No power is turned on

Does power control (H) signal at pin

(4) of IC701 change from "L" to "H"

level?

Check IC701.

YES

Does the base of Q951 change from

about 5.0V to 4.5V?

Check IC701 and all the way up

thru to Q951.

Is voltage of 5V sent out the

collector of Q951.

Check peripheral circuit of Q951

and PC 5V line.

Check peripheral circuit for poor

soldering.

FLOW CHART NO.5 POWER TROUBLESHOOTING(5)

No power is turned on from STANDBY mode.

Is AT 5V voltage line normal?

Check rectifier circuit of AT 5V and

short-circuit of secondary circuit.

YES

Does STBY CTL signal at pin(94) of

IC701 change from "L" to "H" level?

Check the operation of IC701.

Does the filament STBY SW. circuit

Q947 is turn on?

Check peripheral circuit of Q947,

Q948, Q949, D940.

Does the STBY -25V SW. circuit Q944 is

turn on?

Check peripheral circuit of Q944.

Does the STBY 5V SW. circuit Q945

is turn on?

Check peripheral circuit of Q945,

Q946, Q950.

VC-A280NZ/X VC-A480NZ/X

7. TROUBLESHOOTING

Page 39

VC-A230NZ/X

YES

FLOW CHART NO.6 POWER TROUBLESHOOTING(6)

In case of output voltage at low level.

Check peripheral circuits IC902, IC921,

C933, R932, R929, R930 and R931.

The IC901, C913, R908, R909, R910 and R911 as

a result of check, if poor replace.

Check IC902 and peripheral circuits

pin(9) of IC901.

Replace IC901.

Check short-circuit or leak of T901.

Replace T901.

Check primary circuit and peripheral

circuit of Q901.

FLOW CHART NO.7 TIMER TROUBLESHOOTING

The flourescent display tube fails light up.

Is the supply voltage of 5V fed to pin(8)

of IC801?

Check STBY 5V line.

Is the supply negative voltage of -25V

fed to pin(1) of IC801?

Check negative voltage line(STBY

-25V) and power circuit.

Is the filament voltage applied

between (1)/(2) and (31)/(32) of the

fluorescent display tube?

Also negative voltage applied

between these pins and GND.

Check power circuit and peripheral

circuit of D952.

Does the fluorescent display tube

function?

Replace IC801.

Check for cracks on the fluorescent

display tube.

YES

FLOW CHART NO.8 KEY CONTROL TROUBLESHOOTING(1)

Does the key switch make good

contact, when the cassette tape is

inserted?

Check switch contact.

Is there the function control voltage

inputted at pins (96),(97) and (98)

of IC701, when the jog shuttle ring

are activated?

Check peripheral circuit of pins(96),

(97) and (98) of IC701, and the jog

shuttle ring.

Replace IC701.

YES

Key-in input is not received

SW1(Pin96)

SW3(Pin97)

SW4(Pin98)

SW2(GND)

TERMINAL

ANGLE

0-10-20-30-40-50-60 10 20 30 40 50 60

-52 -38 -15 15 38 52

TEST

P802

CASSETTE

P801

CASSETTE

KEY OFF

P801

TEST

P802

S809

S810

CH(+)

S811

EJECT

S813

3.8V

4.4V

5.0V

SW 1/SW 2 INPUT VOLTAGE(V)

3.1V

2.5V

1.9V

1.2V

0.6V

POWER

S885

STOP

S886FFS887

REW

S884

PLAY

S883

PAUSE/STILL

S882

REC

S807

CH(-)

S810

KEY 0 IN

KEY 1 IN

FLOW CHART NO.9 KEY CONTROL TROUBLESHOOTING(2)

Does the key switch make good

contact, when the cassette tape is

inserted?

Check switch contact.

Is there the function control voltage

inputted at the pins(87) and (88) of

IC701, when the keys are activated?

Replace IC701.

Check peripheral circuit of pins(87)

and (88) of IC701, and the function

keys.

YES

Key-in input is not received

VC-A280NZ/X VC-A480NZ/X

Page 40

VC-A230NZ/X

FLOW CHART NO.10 INFRARED R/C TROUBLESHOOTING

No operation is possible from the infrared remote control.

Does the infrared remote control

function?

Replace infrared remote control as

required.

Is the supply voltage of 5V fed to C804

of (+) side?

Check AT 5V and GND lines.

Is "L" pulse sent out from pin(1) of the

receiver when the infrared remote

control is activated?

Replace receiver.

Check between at pin(1) of receiver and

all the way up thru to pin (5) of IC701.

Replace IC701.

YES

Is the cassette housing distorted?

Fix or replace the cassette housing.

YES

FLOW CHART NO.11 CASSETTE CONTROL TROUBLESHOOTING(1)

A cassette tape is not take in.

Check start sensor cover.

Check line between start sensor and

pin (79) of IC701

Check line between pin (91) of IC701

and pin(11) of IC706.

Is the supply voltage of 12V fed to pin

(9) of IC706?

Check M 12V lines.

Check IC706.

Check line between IC706 and loading

motor.

Replace loading motor.

Is the specified voltage applied at the

loading motor terminal when the

cassette tape is inserted?

Does pin(12) of IC706 change to about

10V when the cassette tape in inserted?

Does pin(13) of IC706 go to a "H" level

when the cassette tape is inserted?

Does pin(79) of IC701 change from"H"

to "L" level when the cassette tape is

inserted?

Does the start sensor cover go to open

when the cassette tape is inserted?

FLOW CHART NO.12 CASSETTE CONTROL TROUBLESHOOTING(2)

A cassette tape is taken in, but ejected at once.

Does the start sensor pulse at pin (79)

of IC701 change from "L" to "H" level

when the cassette tape is loaded?

Check line between start sensor and pin

(79) of IC701.

Does the end sensor pulse at pin (85)

of IC701 change from "L" to "H" level

when the cassette tape is loaded?

Check line between end sensor and pin

(85) of IC701.

Does the master cam mode shifter

operate normally when the cassette

tape is loaded?

Check line between cam switch and

IC701.

Replace IC701.

YES

FLOW CHART NO.13 LOADING MOTOR AND EJECT TROUBLESHOOTING

The cassette tape fails to come out.

Does the capstan motor start when the

EJECT button is pressed?

See FLOW CHART NO.14 CAPSTAN

MOTOR TROUBLESHOOTING

Does the take-up reel disk turn when the

capstan motor is running?

Check line between take-up reel

sensor and pin(2) of IC701.

Is a "H" level applied at pin(12) of IC706

when a reel pulse has been inputted?

Check line between pin(90) of IC701

and pin(12) of IC706.

Is the supply voltage of 12V fed to

pin(9) of IC706?

Is the voltage about 10V sent out from

pin(15) of IC706?

Check IC706.

Is the specified voltage applied at the

loading motor terminal?

Check line between IC706 and

loading motor.

Does the loading motor run? Replace loading motor.

Replace cassette cam, gear, etc.

YES

Check M 12V lines.

YES

VC-A280NZ/X VC-A480NZ/X

Page 41

VC-A230NZ/X

FLOW CHART NO.15 DRUM MOTOR TROUBLESHOOTING(1)

The drum motor fails to run.

Is the voltage more than about 2.6V

DC given out of pin(46) of IC701?

Check IC701.

YES

Check PC 5V line.

Is the supply voltage of 5V fed to pin

(3) of IC706?

Is the voltage more than about 2.6V

DC given out of pin(2) of IC706?

Check line between pin(46) of IC701

and pin(2) of IC706.

YES

Is the supply voltage of 12V fed to

pin(21) of IC706?

Replace drum motor.

Check M 12V line.

FLOW CHART NO.14 CAPSTAN MOTOR TROUBLESHOOTING

The capstan motor fails to run.

Is the voltage more than about 2.6V

DC given out of pin(29) of IC701?

Check IC701.

YES

Is the supply voltage of 5V fed to

pin(8) of AC connector?

Check PC 5V line.

Is the voltage more than 2.6V DC

sent in pin(4) of AC connector?

Check line between the AC connector

and pin(29) of IC701?

Is the voltage of pin(3) of AC

connector 1.6~2.7V?

Check line between the pin(92) of

IC701 and pin(3) of AC connector.

Is the supply voltage of 12V/20V fed

to pin(5) of AC connector?

YES

Replace capstan motor.

Check MOTOR Vcc line and motor

voltage selector circuit.

(Q995, 996)

FLOW CHART NO.16 DRUM MOTOR TROUBLESHOOTING(2)

The drum motor runs only for a few seconds.

Replace IC706.

Check peripheral circuit of pins (4), (5)

and (6) of IC706.

Is drum PG signal given out from the

pin (7) of IC706?

Is drum PG signal fed to pin(66) of

IC701?

Check line between pin(7) of IC706

and pin(66) of IC701.

Is head switching pulse sent out from

the pin(23) of IC701?

Check IC701.

Replace IC701.

Check drum motor.

YES

D-FG

about 5Vp-p

D-PG

about 5Vp-p

YES

FLOW CHART NO.17 HEAD SWITCHING PULSE TROUBLESHOOTING.

No head switching pulse.

See FLOW CHART NO.15, 16 (DRUM

MOTOR TROUBLESHOOTING(1), (2))

Is the drum motor rotating?

Is the drum PG signal and drum FG

signal present on pins(66) and (65) of

IC701, respectively?

Replace IC701.

Check line between IC706 and

IC701.

Check peripheral circuit of IC706.

Are the drum PG signal and drum

FG signal present on pins (7), (8)

of IC706?

VC-A280NZ/X VC-A480NZ/X

Page 42

VC-A230NZ/X

FLOW CHART NO.18 DRUM SERVO TROUBLESHOOTING

Drum servo does not function.

Check peripheral circuit of X701.

Is there 14.318MHz oscillation at

pins(37) and (38) of IC701?

In PB mode

YES

In REC mode

Is there drum FG signal at pin(65) of

IC701 present?

Is the V-SYNC signal(reference) at pin

(50) of IC701?

YES

Check peripheral circuit of pin(50) of

IC701, C770, C771 and R770.

Check drum FG signal line.

Is the head switching pulse at pin (23) of

IC701 present?

See FLOW CHART NO.17

(HEAD SWITCHING PULSE TROUBLE-

SHOOTING.)

YES

Is the drum APC output at pin (34) of

IC701 and drum AFC output at pin (32)

of IC701 present?

Replace IC701.

YES

Is the drum control voltage applied to

pin(2) of IC706?

YES

Is pin(46) of IC701 in high impedance?

YES

Check line between pins(34) and (32)

of IC701 and pin(2) of IC706.

Does the IC706 operate normally?

Replace IC701.

Replace drum motor.

FLOW CHART NO.19 CAPSTAN SERVO TROUBLESHOOTING

Capstan servo does not function.

Only PB mode inoperative

YES

Check "1"

Check capstan motor unit and/or replace.

Is there capstan AFC and APC at pins(31)

and (33) of IC701?

Replace A/C head.

YES

Is there capstan AFC signal at pin (31) of

IC701?

Replace IC701.

Is there REC CTL signal output at pins

(75) and (74) of IC701?

Does PB CTL signal appear at pin (76) of

IC701?

Does A/C head operate normally?

Adjust the height of the A/C head.

Check the capstan FG signal line between

pin(6) of AC connector and pin(67) of

IC701.

Check peripheral circuit of AC connector.

Are REC and/or PB mode inoperative?

Check "2"

YES

Does pin(29) of IC701 operate normally?

Is there capstan APC signal at pin (33) of

IC701?

Does PB CTL signal appear at pin (76) of

IC701?

Replace IC701.

Only REC mode inoperative

Check peripheral circuit of pin(50) of

IC701, C770, C771 and R770.

Is the V-SYNC signal(reference) at pin(50)

of IC701?

Replace IC701.

YES

Does the capstan FG signal appear at pin

(67) of IC701?

YES

Check peripheral circuit of X701.

Is there 14.318MHz oscillation at pins(37)

and (38) of IC701?

VC-A280NZ/X VC-A480NZ/X

Page 43

VC-A230NZ/X

FLOW CHART NO.20 E-E MODE TROUBLESHOOTING

No picture E-E signal.

YES

Is there picture signal inputted

in the pins(28), (30) and (31)

of IC201?

1For ext. input mode.

■Check line between rear video input terminal and pin(30) of IC201.

■Check line between front video input terminal and pin(28) of IC201.

2For U/V tuner mode.

■Check line between video output (TP101) of IF circuit and pin(31)

of IC201.

Is the supply voltage of 5V

(Y-Vcc) fed to pin(12) of

IC201?

Check Y/C 5V line.

Check line between pin(52) of

IC201, and pin(49) of IC701.

YES

Is there a picture signal

outputted in the emitter of

Q251?

Check peripheral circuit of

Q251

Is there Y/C serial data and

Y/C clock signal applied to

pins(63) and (62) of IC201?

Check line between pins(63),

(62) of IC201 and pins(56),

(57) of IC701.

Is the supply voltage of 5V

(OSD-Vcc) fed to pin(51) of

IC701?

Replace IC201.

Check PC 5V line.

1Line output : Check the line between Q251 peripheral and output

terminal periphery.

2RF output : Check the line between Q251 peripheral and RF

video input terminal of tuner periphery.

Is there a picture signal

outputted in the pin(52) of

IC201?

Is there a picture signal

inputted in the pin(49) of

IC701?

Is there a picture signal

outputted in the pin(47) of

IC701?

VC-A280NZ/X VC-A480NZ/X

Page 44

VC-A230NZ/X

FLOW CHART NO.21 RECORDING MODE TROUBLESHOOTING

Picture (Luminance) record is impossible (E-E mode is possible).

YES

Is there luminance signal (approx. 0.5Vp-p)

input in the pin (19) of IC201?

Check line between pins (18) and (19) of IC

201.

YES

Is there luminance signal (approx. 0.3Vp-p)

input in the pin (42) of IC201?

Check line between pins (21) and (42) of

IC201 (C208).

YES

Is there luminance signal (approx. 0.5Vp-p)

input in the pin (23) of IC201?

Check line between pins (24) and (23) of

IC201 (C210).

YES

Is there luminance signal (approx. 0.5Vp-p)

input and output in the pins (13) and (14) of

IC201, respectively?

Check peripheral circuit of pins (13) and (14)

of IC201 (R201,R202, C203).

YES

Is there luminance signal (approx. 0.5Vp-p)

input in the pin (26) of IC201?

Check line between pins (39) and (26) of

IC201 (C212).

Is there luminance signal (aprox. 0.5Vp-p)

input in the pin (39) of IC201?

YES

Is voltage 5V applied to the CCD section

power terminal at pin (36) of IC201?

Is CCD control voltage approx. 5V applied

normally to the pin (37) from pin (57) of IC201?

Is clock signal (approx.

8.86MHz<PAL mode> or

7.16MHz<NTSC mode>/0.5Vp-p)

for CCD applied normally to the pin (44) from

(69) of IC201?

Although picture record is possible, colour does not appear in

PAL or NTSC mode (E-E mode is possible).

YES

Is voltage of 5V applied to the chroma power

terminal at pin (61) of IC201?

Check peripheral circuit pin (61) of IC201 and

Y/C 5V line.

Is there chroma signal

(approx. 156mVp-p <PAL mode> or

298mVp-p<NTSC mode>/burst)

input in the pin (46) of IC201?

Check line between pins (60) and (46) of

IC201 (C512).

Is there chroma signal (approx.

197mVp-p <PAL mode> or

375mVp-p<NTSC mode>/burst) input in

the pin (58) of IC201?

Check line between pins (58) and (35) of

IC201 (R505, C515).

YES

For PAL/SECAM mode.

Check whether the pins(73) and (75) of IC201 oscillate 4.43MHz.

For NTSC mode.

Check whether the pins(73) and (71) of IC201 oscillate 3.58NHz.

YES

For PAL/SECAM mode.

Check parts arround of X501.

For NTSC mode.

Check parts arround of X502.

Is there chroma signal (approx.

197mVp-p <PAL mode> or

375mVp-p<NTSC mode>/burst) input in

the pin (35) of IC201?

YES

SP mode:

Is there record FM signal (approx. 20mVp-p) output at pins (88), (89)

<<SP1>> and pins (86), (87) <<SP2>>of IC201?

LP(PAL, SECAM)/EP(NTSC) mode:

Is there record FM signal (approx. 20mVp-p) output at pins (93), (94)

<<EP1>> and pins (92), (91)<<EP2>>of IC201?

SP mode:

Is there chroma ingredient included signal (approx. 20mVp-p) output at

pins (88), (89)<<SP1>> and pins (86), (87)<<SP 2>> of IC201?

LP(PAL, SECAM)/EP(NTSC) mode:

Is there chroma ingredient included signal (approx. 20mVp-p) output at

pins (93), (94)<<SP1>> and pins (92), (91)<<SP 2>> of IC201?

YES

Check or replace the cylinder.

YES

Is the supply voltage of 5V (PRE/REV Vcc)

fed to pin (90) of IC201?

Replace IC201.

VC-A280NZ/X VC-A480NZ/X

Page 45

VC-A230NZ/X

FLOW CHART NO.22 PLAYBACK MODE TROUBLESHOOTING

Playback picture does not appear (E-E mode is possible).

YES

Is there FM signal (approx. 0.4Vp-p) input in

the pin (78) of IC201?

YES

Check line between pins (79) and (78) of

IC201.

YES

Is there luminance signal (approx. 0.25Vp-p)

input and output in the pins (13), (14) and

(17) of IC201?

Check peripheral circuit of pins (13), (14) and

(17) of IC201.

YES

Is there luminance signal (approx. 0.5Vp-p)

inputted at pin (19) of IC201?

Check line between pins (18) and (19) of

IC201 (C206).

YES

Is there luminance signal (approx. 0.3Vp-p)

inputted at pin (42) of IC201?

Check line between pins (21) and (24) of

IC201 (C208).

YES

Is there luminance signal (approx. 0.5Vp-p)

inputted at pin (26) of IC201?

YES

Is there luminance signal (approx. 0.5Vp-p)

inputted at pin (23) of IC201?

Check line between pins (39) and (26) of

IC201 (C212).

Is there luminance signal (approx. 0.4Vp-p)

output in the pin (79) of IC201?

Is the supply V-H.SW.P signal fed to pin

(81) of IC201?

YES

Check V-H.SW.P line.

YES

Is there luminance signal (approx. 0.5Vp-p)

output in the pin (39) of IC201?

Although picture playback is possible, colour does not appear

in PAL or NTSC mode (E-E mode is possible).

YES

Is voltage 5V applied to the chroma power

terminal at pin (61) of IC201?

YES

Check peripheral circuit of pins (61) of IC201

and Y/C 5V line.

Is there chroma signal (approx.

156mVp-p <PAL mode> or

298mVp-p<NTSC mode> /burst)

input in the pin (46) of IC201?

YES

Is there chroma signal (approx.

197mVp-p <PAL mode> or

375mVp-p<NTSC mode>/ burst)

input in the pin (58) of IC201?

Check line between pins (58) and (35) of

IC201 (R505, C515).

YES

Is there chroma signal (approx.

300mVp-p <PAL mode> or

286mVp-p<NTSC mode>/burst)

input in the pin (55) of IC201?

Replace IC201.

Is there chroma signal input at pin (54)

of IC201?

Check line between pins (55) and (54) of

IC201 (C514).

Check line between pins (60) and (46) of

IC201 (C512).

YES

For PAL/SECAM mode.

Check whether the pins(73) and (75) of

IC201 oscillate 4.43MHz.

For NTSC mode.

Check whether the pins(73) and (71) of

IC201 oscillate 3.58NHz.

For PAL/SECAM mode.

Check parts arround of X501.

For NTSC mode.

Check parts arround of X502.

Is there chroma signal (approx.

197mVp-p <PAL mode> or

375mVp-p<NTSC mode>/ burst)

input in the pin (35) of IC201?

YES

Is voltage 5V applied to the CCD section power terminal at pin (36) of IC201?

Check line between pins (24) and (23) of IC201 (C210).

Is there video signal (approx. 2.0Vp-p)

outputted at pin (52) of IC201?

Replace IC201.

Is CCD control voltage approx. 5V normally to the pin (37) from pin (57) of IC201?

Is clock signal (approx. 8.86MHz<PAL mode> or 7.16MHz<NTSC mode>/0.5Vp-p) for CCD applied normally to the pin (44) from (69) of IC201?

VC-A280NZ/X VC-A480NZ/X

Page 46

VC-A230NZ/X

YES

FLOW CHART NO.23 LINEAR SOUND MODE TROUBLESHOOTING(1)

Check line between pin(99) of IC201 and

pin(21) of IC701.

Is there audio signal outputted at pin(11) of

IC201?

Check fh trap circuit.(Q604)

Does the fh trap circuit operate normally?

Line output terminal :

Check line ranging from fh trap circuit to the audio output terminal.

RF output terminal :

Check line ranging from fh trap circuit to the to the audio input terminal of tuner(TU101).

Is there audio signal inputted at each input

terminal of IC201 as shown in table?

U/V tuner audio input terminal.

Normal audio input terminal.

pin(8)

pin(9)

Check line ranging from IF circuit.

Check line ranging from EXT. input terminal.

Replace IC201.

Is there "L" level at pin(99) of IC201?

No E-E sound heard.

FLOW CHART NO.24 LINEAR SOUND MODE TROUBLESHOOTING (1)

Is there "L" level at pin (99) of IC201?

Is there a signal at pin(4) of IC201?

YES

No linear sound recording

Is the supply voltage of 12V fed to pin(2) of

T601?

Check the AUDIO MUTE (H) line between pin

(99) of IC201 and pin (21) of IC701.

Replace IC201.

Check PC 12V line.

YES

Is there signal (Bias) at pin (5) of T601?

Check the Bias oscillation circuit(T601,Q602,

Q603) and FE BIAS CTL line.

Is there signal (Bias + Audio sig.) at pin (6)

of T601?

YES

Check the MH-AM harness and A/C head.

Check peripheral circuits of T601.

YES

FLOW CHART NO.25 LINEAR SOUND MODE TROUBLESHOOTING (2)

YES

Clean A/C Head.

Is the azimuth hight of A/C head properly

adjusted?

Replace A/C head.

Is there "L" level at pin (99) of IC201?

Is there a signal at pin(11) of IC201?

YES

Are the MH-AA harness and the PB AMP.

peripheral parts normal?

Readjust azimuth hight.

YES

No linear sound playback

Is there a signal at pin(100) of IC201?

Does the fh trap circuit operate normally?

(Q604)

YES

Check the AUDIO MUTE (H) line between pin

(99) of IC201 and pin (21) of IC701.

Replace IC201.

Check fh trap circuit.(Q604)

Check line ranging from EXT. terminal to

audio output terminal.

VC-A280NZ/X VC-A480NZ/X

Page 47

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

REPLACEMENT OF IC710(E2PROM)

Servicing precautions When the IC710(E2PROM) has been replaced, make the following reprogramming. Depending on models, the IC710(E2PROM) has been factory adjusted for it’s memory function. It’s therefor necessary to reprogram the memory function for the model in question. Note that the servo circuit requires readjustments for the slow and still modes.

1. Memory function reprogramming.

1. Check the power off.(Power is standby mode)

2. Make for moment short-circuit test point(P802), located at the front side on the main PWB.” Be sure that all the fluorescent display tube light up into the TEST mode.

3. Using the CHANNEL(+) AND (-) buttons, select the right function numbers from JP0ü`J39, which appear in the fluorescent display tube, referring to the E2PROM map. Press the DISPLAY button to pickup the functions (ON) and the CLEAR button to discard the functions(OFF). DISPLAY and CLEAR buttons, are located on the remote control unit.

∗ when the DISPLAY button has been pressed (ON), the memory function number starts flashing. ∗ when the CLEAR button has been pressed (OFF), the memory function number lights up.

4. Press the FF button on the remote control unit. By doing, lower 5 of the 10 digits are displayed in hexadecimal notation. Example : "ON" and "OFF" are taken as "1" and "0" respectively.

JP19 JP18 JP17 JP16 JP15 JP14 JP13 JP12 JP11 JP10 JP9 JP8 JP7 JP6 JP5 JP4 JP3 JP2 JP1 JP0

01100110001000010011

↓↓ ↓↓↓

66 213

5. Press the STOP button on the remote control unit. By doing, upper 5 in the 10 digits are displayed in hexadecimal notation from the feature function.” Example : "ON" and "OFF" are taken as "1" and "0" respectively.

JP39 JP38 JP37 JP36 JP35 JP34 JP33 JP32 JP31 JP30 JP29 JP28 JP27 JP26 JP25 JP24 JP23 JP22 JP21 JP20

00110110000000001000

↓↓ ↓↓↓

36 008

2. Memory recording preset level reprogramming.

1. Similarly to the above step 1-1 and 2 the same operate.

2. Using the CHANNEL (+) AND (-) buttons, select the right function numbers continued from recording preset number as has been <LP p ∗ ∗ to SP p ∗ ∗>, which appear in the fluorescent display tube, referring to the E2PROM map.

3. Recording level preset number selected from the ten keys on the remote control unit, which appear in the fluorescent display tube, referring to the E2PROM map.

4. Example : SP or LP p ∗ ∗

↑↑↑↑

Tape speed Chrominance preset number. (from "0" to "7")

Luminance preset number. (from "0" to "7") System (p : PAL)

5. When the press the REW button on the remote control unit. By doing, PAL system recording level preset number selected from the ten keys on the remote control unit which appear in the fluorescent display tube, referring to the E2PROM map.

LP p ∗∗LP p ∗ ∗ SP p ∗∗SP p ∗ ∗

selection from the selection from the selection from the selection from the ten keys. ten keys. ten keys. ten keys. (from "0" to "7") (from "0" to "7") (from "0" to "7") (from "0" to "7")

↑↑↑↑

3. Finally make for a moment short-circuit test point(P802), located at the front side on the main PWB to clear the TEST mode.

Page 48

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

ROM MAP

MODEL VC-A230NZ VC-A230X VC-A280NZ VC-A280X VC-A480NZ VC-A480X EP n ∗ ∗ NTSC Luminance level 0 0 0 0 0 0 EP n ∗ ∗ NTSC Chrominance level 7 7 7 7 7 7 SP n ∗ ∗ NTSC Luminance level 0 0 0 0 0 0 SP n ∗ ∗ NTSC Chrominance level 7 7 7 7 7 7 LP p ∗ ∗ PAL Luminance level 3 3 3 3 3 3 LP p ∗ ∗ PAL Chrominance level 3 3 3 3 4 4 SP p ∗ ∗ PAL Luminance level 3 3 3 3 4 4 SP p ∗ ∗ PAL Chrominance level 3 3 3 3 4 4 JP39 A.DUB 0 0 0 0 0 0 JP38 NOT SLOW ATR 1 1 1 1 0 0 JP37 INSTANT REPLAY 0 0 1 1 1 1 JP36 NTPB 1 1 1 1 1 1 JP35 NTSC SKEW 0 0 0 0 0 0 JP34 HEAD2 0 0 0 0 0 0 JP33 HEAD1 0 0 0 0 1 1 JP32 HEAD0 1 1 1 1 0 0 JP31 GAMMA 0 0 0 0 0 0 JP30 L.P 5MIN. 0 0 0 0 0 0 JP29 POSI89 0 0 0 0 0 0 JP28 R/C CODE 1/2 0 0 0 0 0 0 JP27 DNR 0 0 0 0 0 0 JP26 POST CODE 0 0 0 0 0 0 JP25 SAT CTL 0 0 0 0 0 0 JP24 AV LINK 0 0 0 0 0 0 JP23 Hi-Fi 0 0 0 0 0 0 JP22 SORT/AUTO CLOCK 0 0 0 0 0 0 JP21 DECODER 0 0 0 0 0 0 JP20 DOLBY SURROUND 0 0 0 0 0 0 JP19 NICAM 1 0 0 0 0 0 0 JP18 NICAM 0 0 0 0 0 0 0 JP17 G-CODE 1 0 0 1 1 1 1 JP16 G-CODE 0 0 0 0 0 0 0 JP15 OEM 0 0 0 0 0 0 JP14 LP 1 1 1 1 1 1 JP13 FRONT AV 0 0 1 1 1 1 JP12 DUBLE SCART 0 0 0 0 0 0 JP11 RF OUT 0 0 0 0 0 0 JP10 TUNER 2 0 0 0 0 0 0 JP 9 TUNER 1 1 0 1 0 1 0 JP 8 TUNER 0 0 1 0 1 0 1 JP 7 SYSTEM 1 0 0 0 0 0 0 JP 6 SYSTEM 0 0 0 0 0 0 0 JP 5 SAT CH VPS OFF 0 0 0 0 0 0 JP 4 LOW POWER 1 1 1 1 1 1 JP 3 SPATIALIZER 0 0 0 0 0 0 JP 2 VPS/PDC 0 0 0 0 0 0 JP 1 COLOR 1 1 1 1 1 1 1 JP 0 COLOR 0 0 0 0 0 0 0

DISPLAY IN HEXADECIMAL NOTATION

5100004212 5100004112 7100026212 7100026112 3200026212 3200026112

0:LIGHT UP 1:FLASHING

Page 49

8.BLOCK DIAGRAM

POWER CIRCUIT BLOCK DIAGRAM

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Page 50

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

SYSTEM SERVO BLOCK DIAGRAM

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Page 51

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

SIGNAL FLOW BLOCK DIAGRAM

PB Chrominance Signal PB Luminance Signal

REC Chrominance Signal REC Luminance Signal

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

E-E Signal

Page 52

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

AUDIO BLOCK DIAGRAM

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

PB Audio Signal

EE Signal

REC Audio Signal

Page 53

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

SCHEMATIC DIAGRAM

IMPORTANT SAFETY NOTICE: BE SURE TO USE GENUINE PARTS FOR SECURING THE SAFETY AND RELIABILITY OF THE SET. PARTS MARKED WITH " å " AND PARTS SHADED (IN BLACK) ARE ESPECIALLY IMPORTANT FOR MAINTAINING THE SAFETY AND

PROTECTING ABILITY OF THE SET. BE SURE TO REPLACE THEM WITH PARTS OF SPECIFIED PART NUMBER.

SAFETY NOTES:

1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS.

2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIOL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.

NOTES:

1. The unit of resistance "ohm" is omitted (k=1000 ohm, M=1 Meg ohm).

2. All resistors are 1/8 watt, unless otherwise noted.

3. The unit of capacitance "F" is omitted (µ=µF, p=µµF).

4. The values in parentheses are the ones in the PB

mode; the values without parentheses are the ones in the REC mode.

VOLTAGE MEASUREMENT CONDITIONS:

1. DC voltages are measured between points indicated and chassis ground by VTVM, with AC110~240V, 50/60Hz supplied to unit and all

controls are set to normal viewing picture unless otherwise noted.

2. Voltages are measured with 10000µV B & W or colour noted.

WAVEFORM MEASUREMENT CONDITIONS: 10000µV 87.5 percent modulated colour bar signal is

fed into tuner.

CAUTION: This circuit diagram is original one. Therefore there

may be a slight difference from yours.

7654321

Page 54

13121110987

VC-A230NZ/X

7654321

VC-A280NZ/X VC-A480NZ/X

9.SCHEMATIC DIAGRAM AND PWB FOIL PATTERN

OPERATION CIRCUIT

Page 55

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

MAIN CIRCUIT(1)

* VOLTAGE MEASUREMENT MODE

PB ......Parentheses ( )

REC ... Without Parentheses

654321

58 59

13121110987

Page 56

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

MAIN CIRCUIT(2)

* VOLTAGE MEASUREMENT MODE

PB ......Parentheses ( )

REC ... Without Parentheses

654321

60 61

13121110987

Page 57

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

MAIN CIRCUIT(3)

* VOLTAGE MEASUREMENT MODE

PB ......Parentheses ( )

REC ... Without Parentheses

654321

62 63

13121110987

Page 58

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

MAIN CIRCUIT(4)

* VOLTAGE MEASUREMENT MODE

PB ......Parentheses ( )

REC ...Without Parentheses

654321

64 65

13121110987

Page 59

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

IF CIRCUIT

* VOLTAGE MEASUREMENT MODE

PB ......Parentheses ( )

REC ...Without Parentheses

654321

66 67

13121110987

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

PWB FOIL PATTERN

MAIN PWB

654321

13121110987

68 69

Page 61

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

OPERATION PWB

IF PWB

7654321

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

10. REPLACEMENT PARTS LIST

PARTS REPLACEMENT

Parts marked with " å " are important for maintaining the safety of the set.Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

"HOW TO ORDER REPLACEMENT PARTS"

To have your order filled promptly and correctly, please furnish the following informations.

1. MODEL NUMBER 2. REF. NO.

3. PART NO. 4. DESCRIPTION

5. PRICE CODE

HOW TO IDENTIFY CHIP

TRANSISTORS AND

DIODES BY ITS MARKING

(1)

(3)

(2)

Fig. 1

Package Marking Parts No.

Fig. 1 FQ VS2SA1037KQ-1 Fig. 1 BQ VS2SC2412KQ-1

Marking

MARK ★: SPARE PARTS-DELIVERY SECTION

Ref. No. Part No. ★ Description Code

(1) Base/Input (2) Emitter/Ground (3) Collector/Output

PRINTED WIRING BOARD ASSEMBLIES

(NOT REPLACEMENT ITEM)

DUNTK5757TEV4 - Main Unit (VC-A230NZ) — DUNTK5757TEV3 - Main Unit (VC-A230X) — DUNTK5757TEVA - Main Unit (VC-A280NZ) — DUNTK5757TEV8 - Main Unit (VC-A280X) — DUNTK5757TEV6 - Main Unit (VC-A480NZ) — DUNTK5757TEV5 - Main Unit (VC-A480X) — DUNTK5758TEV1 - Operation Unit — DUNTK5767TEV1 - IF Unit —

DUNTK5757TEV4 (VC-A230NZ) DUNTK5757TEV3 (VC-A230X) DUNTK5757TEVA (VC-A280NZ) DUNTK5757TEV8 (VC-A280X) DUNTK5757TEV6 (VC-A480NZ) DUNTK5757TEV5 (VC-A480X)

Main Unit

TUNER

NOTE: THE PARTSHERE SHOWN ARE SUPPLIED ASAN

TU101 VTUATMCG1-201 V Tuner BH

ASSEMBLY BUT NOT INDEPENDENTLY.

IC201 VHiHA8317F/-1 V HA118317F BA IC601 VHiBA7755A/-1 V BA7755A AE IC701 RH-iX1583GEZZ J I.C. AZ IC702 VHiPST600H/-1 V IC-PST600H-2 AE IC706 VHiLB1988//-1 V LB1988 AQ IC710 VHiS24C01A/-1 V S-24C02AFJ-TB AF

IC710 VHiS24C02A/-1 V S-24C02AFJ-TB AK IC801 VHiMN12511/-1 V MN12511 AQ

å IC901 VHiAN8037//-1 V I.C. AP

IC921 VHiKIA431//-1 V KIA431 AE

Q251 VS2SA1530ARS1 V 2SA1530AR AC Q304 VS2SC3052EF-1 V 2SC3052EF AC Q305 VSKRC103S//-1 V KRC103S AA

Q306 VS2SA1530ARS1 V 2SA1530AR AC Q602 VS2C3939SQR-1 V 2SC3939SQR AC Q603 VS2SC3052EF-1 V 2SC3052EF AC Q604 VSiMX9/////-1 V IMX9 AC Q704 VS2SA1530ARS1 V 2SA1530AR AC Q705 VSKRC102S//-1 V KRC102S AA Q706 VS2SA1530ARS1 V 2SA1530AR AC Q710 VS2SC3052EF-1 V 2SC3052EF AC Q711 VS2SC3052EF-1 V 2SC3052EF AC Q712 VS2SA1530ARS1 V 2SA1530AR AC

å Q901 VS2SK2848//-1 V 2SK2848 AH

Q940 VS2SA1530ARS1 V 2SA1530AR AC Q941 VSKRC103S//-1 V KRC103S AA Q942 VS2SB1117KU1E V 2SB1117KU AE Q943 VSKRC102S//-1 V KRC102S AA Q944 VSKRC102S//-1 V KRC102S AA Q945 VS2SA1271-Y-1 V 2SA1271-Y AB Q946 VSKRC103S//-1 V KRC103S AA Q947 VS2SC3203Y/-1 V 2SC3203Y AB Q948 VSKRA103S//-1 V KRA103S AA Q949 VSKRC103S//-1 V KRC103S AA Q950 VSKRC103S//-1 V KRC103S AA Q951 VS2SA1271-Y-1 V 2SA1271-Y AB Q952 VSKRC103S//-1 V KRC103S AA Q953 VSKRC102S//-1 V KRC102S AA Q955 VS2SB1117KU1E V 2SB1117KU AE Q956 VSKRC103S//-1 V KRC103S AA Q963 VS2SA1530ARS1 V 2SA1530AR AC Q981 VS2SA1271-Y-1 V 2SA1271-Y AB Q982 VSKRC103S//-1 V KRC103S AA Q985 VSKRC103S//-1 V KRC103S AA Q991 VS2SD471-KL1E V 2SD471-KL AC Q992 VS2SA1530ARS1 V 2SA1530AR AC Q993 VSKRC103S//-1 V KRC103S AA Q995 VSKRC102S//-1 V KRC102S AA

D701 RH-PX0270GEZZ J Photodiode AC D702 VHD1SS119//-1 V 1SS119 AB D706 RH-PX0252GEZZ J GP1S563 AF D707 RH-PX0252GEZZ J GP1S563 AF D708 RH-PX0253GEZZ J GP1S94 AF D709 RH-PX0253GEZZ J GP1S94 AF D710 VHD1SS119//-1 V 1SS119 AB D712 VHD1SS119//-1 V 1SS119 AB D715 VHD1SS119//-1 V 1SS119 AB D716 VHD1SS119//-1 V 1SS119 AB

å D901 RH-DX0220CEZZ V Diode AB å D902 RH-DX0220CEZZ V Diode AB å D903 RH-DX0220CEZZ V Diode AB å D904 RH-DX0220CEZZ V Diode AB å D906 VHD1SS119//-1 V 1SS119 AB å D907 RH-EX0639GEZZ J Zener Diode AA å D908 VHDRB441Q40-1 V Diode AC å D909 VHD1SS119//-1 V Diode AB å D910 VHDRB441Q40-1 V Diode AC

INTEGRATED CIRCUITS

(VC-A230NZ/X) (VC-A280NZ/X,A480NZ/X)

TRANSITORS

(VC-A230NZ/X,A280NZ/X)

DIODES

Page 63

VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

å D911 RH-EX0654GEZZ J Zener Diode AB

D921 VHD10ELS4//-1 V 10ELS4 AD D922 VHD10ELS4//-1 V 10ELS4 AD D923 VHD10ELS4//-1 V 10ELS4 AD D924 VHD15DF1FC/1E V 15DF1FC AD D925 VHDRK34////-1 V RK34 AE D926 VHD1SS147//-1 V 1SS147 AA D940 VHD1SS119//-1 V 1SS119 AB D941 RH-EX0613GEZZ J Zener Diode AA D951 RH-EX0677GEZZ J Zener Diode AB D952 RH-EX0601GEZZ J Zener Diode AA D957 VHD1S40////-1 V 1S40 AF D991 RH-EX0631GEZZ J Zener Diode AA D992 VHD1SS119//-1 V 1SS119 AB D993 VHDRL1N4004-1 V RL1N4004 AD D994 VHDRL1N4004-1 V RL1N4004 AD DG801 VVKSTV6SS50-1 V Display

å IC902 RH-FX0001AJZZ V TCET1103G AE

Q701 RH-PX0233GEZZ J PT493FL2 AD Q702 RH-PX0233GEZZ J PT493FL2 AD

PACKAGED CIRCUITS

å VA901 RH-VX0048CEZZ V Varistor AE

X502 RCRSB0232GEZZ J Crystal AG X701 RCRSB0205GEZZ J Crystal AM X702 RCRSB0138GEZZ J Crystal AD X770 RCRSB0184GEZZ J Crystal AM

COILS

L101 VP-CF101K0000 V Peaking 100µHAB L102 VP-XF100K0000 V Peaking 10µHAB L103 VP-XF120K0000 V Peaking 12µHAB L104 VP-MK101K0000 V Peaking 100µHAB L105 VP-XF100K0000 V Peaking 10µHAB L112 VP-XF100K0000 V Peaking 10µHAB L113 VP-XF2R7K0000 V Peaking 2.7µHAB L201 VP-XF221J0000 V Peaking 220µHAB L301 VP-MK101K0000 V Peaking 100µHAB L302 VP-XF180K0000 V Peaking 18µHAB L303 VP-MK102K0000 V Peaking 1000µHAB L502 VP-XF560K0000 V Peaking 56µHAB L503 VP-XF120K0000 V Peaking 12µHAB L602 VP-DF221K0000 V Peaking 220µHAB

å L901 RCILF0009AJZZ V Coil AK

L922 RCILP0171CEZZ V Coil AD L923 RCILP0175CEZZ V Coil AD

TRANSFORMERS

T601 RTRNH0086GEZZ J OSC. Transformer AD T901 RTRNZ0061AJZZ V Transformer AS

CAPACITORS

C101 VCKYD41HB681K V 680p 50V Ceramic AA C102 VCKYCY1HB562K V 5600p 50V Ceramic AA C103 VCEA9M0JW107M V 100 6.3V Electrolytic AB C105 VCEA0A0JW108M V 1000 6.3V Electrolytic AC C106 VCKYCY1HF103Z V 0.01 50V Ceramic AA C107 VCEA9M0JW227M V 220 6.3V Electrolytic AB C108 VCCCCY1HH470J V 47p 50V Ceramic AA C109 VCCCCY1HH470J V 47p 50V Ceramic AA C112 VCKYCY1HF103Z V 0.01 50V Ceramic AA C113 VCEA9M1CW106M V 10 16V Electrolytic AB C114 VCKYCY1CF104Z V 0.1 16V Ceramic AA C115 VCEA9M1HW105M V 1 50V Electrolytic AB C116 VCEA9M0JW476M V 47 6.3V Electrolytic AB C117 VCCSD41HL470J V 47p 50V Ceramic AA C118 VCCCCY1HH271J V 270p 50V Ceramic AA C201 VCEA9M0JW107M V 100 6.3V Electrolytic AB C202 VCKYCY0JF105Z V 1 6.3V Ceramic AB C203 VCCCCY1HH151J V 150p 50V Ceramic AA C204 VCKYCY1CB104K V 0.1 16V Ceramic AB C205 VCCCCY1HH270J V 27p 50V Ceramic AA C206 VCKYCY1CF104Z V 0.1 16V Ceramic AA C207 VCKYCY1CF104Z V 0.1 16V Ceramic AA C208 VCEA9M1CW106M V 10 16V Electrolytic AB

C209 VCKYCY1CF104Z V 0.1 16V Ceramic AA C210 VCKYCY1CF104Z V 0.1 16V Ceramic AA C211 VCEA9M1HW335M V 3.3 50V Electrolytic AB C212 VCEA9M1CW106M V 10 16V Electrolytic AB C213 VCEA9M1HW225M V 2.2 50V Electrolytic AB C214 VCKYCY0JF105Z V 1 6.3V Ceramic AB C215 VCKYCY0JF105Z V 1 6.3V Ceramic AB C216 VCKYCY0JF105Z V 1 6.3V Ceramic AB

(VC-A280NZ/X,A480NZ/X) C217 VCEA9M0JW107M V 100 6.3V Electrolytic AB C218 VCKYCY0JF105Z V 1 6.3V Ceramic AB C219 VCKYCY1CF104Z V 0.1 16V Ceramic AA C220 VCKYCY1CF104Z V 0.1 16V Ceramic AA C221 VCEA9M1CW106M V 10 16V Electrolytic AB C223 VCKYCY1CF104Z V 0.1 16V Ceramic AA C226 VCEA9M0JW107M V 100 6.3V Electrolytic AB C227 VCKYCY0JF105Z V 1 6.3V Ceramic AB C228 VCEA9A0JW476M V 47 6.3V Electrolytic AB C251 VCEA9M1CW476M V 47 16V Electrolytic AB C252 VCEA0A0JW337M V 330 6.3V Electrolytic AC C256 VCKYCY1CF104Z V 0.1 16V Ceramic AA C301 VCEA9M0JW107M V 100 6.3V Electrolytic AB C302 VCKYCY0JF105Z V 1 6.3V Ceramic AB C303 VCKYCY1HB102K V 1000p 50V Ceramic AA C304 VCKYCY1HB102K V 1000p 50V Ceramic AA C305 VCKYCY1HB102K V 1000p 50V Ceramic AA C306 VCKYCY1HB102K V 1000p 50V Ceramic AA C307 VCKYCY1HB102K V 1000p 50V Ceramic AA

(VC-A480NZ/X) C308 VCKYCY1HB102K V 1000p 50V Ceramic AA

(VC-A480NZ/X) C309 VCKYCY1HB102K V 1000p 50V Ceramic AA

(VC-A480NZ/X) C310 VCKYCY1HB102K V 1000p 50V Ceramic AA

(VC-A480NZ/X) C311 VCKYCY1HF103Z V 0.01 50V Ceramic AA C312 VCKYCY1HF103Z V 0.01 50V Ceramic AA C315 VCKYCY1HB222K V 2200p 50V Ceramic AA C316 VCCCCY1HH180J V 18p 50V Ceramic AA C317 VCCCCY1HH120J V 12p 50V Ceramic AA C318 VCCCCY1HH120J V 12p 50V Ceramic AA C319 VCCCCY1HH100D V 10p 50V Ceramic AA C320 VCCCCY1HH100D V 10p 50V Ceramic AA

(VC-A480NZ/X) C324 VCKYCY1EB103K V 0.01 25V Ceramic AA

(VC-A480NZ/X) C325 VCKYCY1EB103K V 0.01 25V Ceramic AA

(VC-A230NZ/X,A280NZ/X) C501 VCEA9M0JW107M V 100 6.3V Electrolytic AB C502 VCKYCY0JF105Z V 1 6.3V Ceramic AB C503 VCKYCY1CB104K V 0.1 16V Ceramic AB C504 VCEA9A1HW225M V 2.2 50V Electrolytic AB C505 VCKYCY1EB223K V 0.022 25V Ceramic AA C506 VCEA9M1HW474M V 0.47 50V Electrolytic AB C507 VCKYCY1CF104Z V 0.1 16V Ceramic AA C508 VCEA9M1HW475M V 4.7 50V Electrolytic AB C509 VCKYD41CY103N V 0.01 16V Ceramic AA C512 VCKYD41CY103N V 0.01 16V Ceramic AA C513 VCKYCY1HF103Z V 0.01 50V Ceramic AA C514 VCKYCY1HF103Z V 0.01 50V Ceramic AA C515 VCKYCY1HB331K V 330p 50V Ceramic AA C516 VCCCCY1HH120J V 12p 50V Ceramic AA C517 VCEA9M1HW335M V 3.3 50V Electrolytic AB C518 VCKYCY1HF333Z V 0.033 50V Ceramic AA C519 VCEA9M1HW105M V 1 50V Electrolytic AB C521 VCCCCY1HH5R0C V 5p 50V Ceramic AA C523 VCKYCY1HF103Z V 0.01 50V Ceramic AA C601 VCEA9M0JW107M V 100 6.3V Electrolytic AB C602 VCKYCY1EB103K V 0.01 25V Ceramic AA C603 VCEA9M1CW106M V 10 16V Electrolytic AB C604 VCKYCY1HB821K V 820p 50V Ceramic AA C605 VCEA9M1CW106M V 10 16V Electrolytic AB C606 VCEA9M1HW475M V 4.7 50V Electrolytic AB C607 VCEA9M1HW475M V 4.7 50V Electrolytic AB C608 VCEA9M0JW226M V 22 6.3V Electrolytic AB

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Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

C609 VCEA9M1HW475M V 4.7 50V Electrolytic AB C610 VCKYCY1CF104Z V 0.1 16V Ceramic AA C611 VCKYCY1CF104Z V 0.1 16V Ceramic AA C612 VCKYCY1CF104Z V 0.1 16V Ceramic AA

(VC-A280NZ/X,A480NZ/X) C617 VCEA9M0JW476M V 47 6.3V Electrolytic AB C618 VCKYCY1EB103K V 0.01 25V Ceramic AA C619 VCKYCY1EB103K V 0.01 25V Ceramic AA C620 VCEA9M1CW106M V 10 16V Electrolytic AB C621 VCQPSA2AA562J V 5600p 100V Mylar AC C622 VCKYCY1HB222K V 2200p 50V Ceramic AA C623 VCEA9M1CW106M V 10 16V Electrolytic AB C629 VCKYCY0JF105Z V 1 6.3V Ceramic AB C630 VCKYCY0JF105Z V 1 6.3V Ceramic AB C631 VCCCCY1HH101J V 100p 50V Ceramic AA C632 VCCCCY1HH101J V 100p 50V Ceramic AA C633 VCCCCY1HH221J V 220p 50V Ceramic AA C701 VCKYCY1HF103Z V 0.01 50V Ceramic AA C702 VCKYCY1HF103Z V 0.01 50V Ceramic AA C703 VCEA9M1HW105M V 1 50V Electrolytic AB C704 VCKYCY0JF105Z V 1 6.3V Ceramic AB C705 VCKYCY1HF103Z V 0.01 50V Ceramic AA C706 VCKYCY1HF103Z V 0.01 50V Ceramic AA C707 VCCCCY1HH150J V 15p 50V Ceramic AA C708 VCCCCY1HH150J V 15p 50V Ceramic AA C709 VCCCCY1HH180J V 18p 50V Ceramic AA C710 VCCCCY1HH180J V 18p 50V Ceramic AA C711 VCKYCY1HB102K V 1000p 50V Ceramic AA C712 VCKYCY1HB102K V 1000p 50V Ceramic AA C713 VCKYCY1HB102K V 1000p 50V Ceramic AA C714 VCKYCY1CF104Z V 0.1 16V Ceramic AA C715 VCEA9M0JW226M V 22 6.3V Electrolytic AB C716 VCCCCY1HH221J V 220p 50V Ceramic AA C717 VCCCCY1HH221J V 220p 50V Ceramic AA C718 VCKYCY1CF104Z V 0.1 16V Ceramic AA C719 VCKYCY1EB103K V 0.01 25V Ceramic AA C722 VCKYCY1HF103Z V 0.01 50V Ceramic AA C724 VCKYCY1HF103Z V 0.01 50V Ceramic AA C727 VCKYCY1HF103Z V 0.01 50V Ceramic AA C729 VCKYCY1HF103Z V 0.01 50V Ceramic AA C730 VCKYCY1HF103Z V 0.01 50V Ceramic AA C736 VCKYCY1HF103Z V 0.01 50V Ceramic AA C737 VCKYCY1HF103Z V 0.01 50V Ceramic AA C738 VCKYCY1HB102K V 1000p 50V Ceramic AA C739 VCKYCY1HB102K V 1000p 50V Ceramic AA C743 VCKYCY1CF104Z V 0.1 16V Ceramic AA C744 VCEA2A0JW108M V 1000 6.3V Electrolytic AB C745 RC-EZ0111GEZZ J 0.1F 6.2V Electrolytic AH C746 VCKYD41CY103N V 0.01 16V Ceramic AA C748 VCKYCY1HF103Z V 0.01 50V Ceramic AA C751 VCKYCY1HF103Z V 0.01 50V Ceramic AA C752 VCEA2A1VW337M V 330 35V Electrolytic AD C754 VCKYCY1HF103Z V 0.01 50V Ceramic AA C755 VCKYCY1HF473K V 0.047 50V Ceramic AA C756 VCKYCY1HF473K V 0.047 50V Ceramic AA C759 VCEA9M0JW226M V 22 6.3V Electrolytic AB C760 VCEA9M0JW107M V 100 6.3V Electrolytic AB C763 VCEA9M0JW476M V 47 6.3V Electrolytic AB C764 VCKYCY1HF103Z V 0.01 50V Ceramic AA C770 VCCCCY1HH101J V 100p 50V Ceramic AA C771 VCE9EM1HW105M V 1 50V Elect.(N.P) AB C772 VCCCCY1HH120J V 12p 50V Ceramic AA C773 VCCCCY1HH120J V 12p 50V Ceramic AA C774 VCKYCY1CF104Z V 0.1 16V Ceramic AA C775 VCEA9M0JW107M V 100 6.3V Electrolytic AB C776 VCKYCY0JF105Z V 1 6.3V Ceramic AB C783 VCKYCY0JF105Z V 1 6.3V Ceramic AB C784 VCKYCY1HB102K V 1000p 50V Ceramic AA C785 VCEA9M0JW476M V 47 6.3V Electrolytic AB C786 VCKYCY1CF334Z V 0.33 16V Ceramic AA C787 VCFYHA1HA474J V 0.47 50V M.Polypro AD C789 VCKYCY1EB103K V 0.01 25V Ceramic AA C790 VCKYCY1HB392K V 3900p 50V Ceramic AA C791 VCKYCY1HB392K V 3900p 50V Ceramic AA C792 VCEA9M1CW476M V 47 16V Electrolytic AB

C794 VCKYCY1EF223K V 0.022 25V Ceramic AA C795 VCKYCY1EF223K V 0.022 25V Ceramic AA C797 VCKYCY1CF104Z V 0.1 16V Ceramic AA C798 VCKYCY1EF223K V 0.022 25V Ceramic AA C799 VCKYD41CY103N V 0.01 16V Ceramic AA C801 VCKYCY1HF103Z V 0.01 50V Ceramic AA C802 VCEA9M0JW476M V 47 6.3V Electrolytic AB C803 VCKYCY1HF103Z V 0.01 50V Ceramic AA C804 VCEA9M0JW476M V 47 6.3V Electrolytic AB C805 VCKYCY1HF103Z V 0.01 50V Ceramic AA C806 VCKYCY1HF103Z V 0.01 50V Ceramic AA C811 VCEA9A1HW475M V 4.7 50V Electrolytic AB

å C902 RC-FZ029CUMZZ V 0.1 250V M.Polypro AD å C903 RC-KZ0105GEZZ J 2200 250V Ceramic AD å C904 RC-EZ0440GEZZ J 47 400V Electrolytic AH å C905 RC-KZ0375CEZZ V 330 1kV Ceramic AC å C908 VCEA9A1HW226M V 22 50V Electrolytic AB å C909 VCKYCY1HB392K V 3900p 50V Ceramic AA å C911 VCKYCY1HB222K V 2200p 50V Ceramic AA å C912 VCEA9A1HW106M V 10 50V Electrolytic AB å C913 VCKYCY1EF333Z V 0.033 25V Ceramic AB

C917 VCKYD41HF104Z V 0.1 50V Ceramic AA C921 VCEA0A1AW477M V 470 10V Electrolytic AC C923 VCEA0A1JW476M V 47 63V Electrolytic AB C925 VCEA0A1VW477M V 470 35V Electrolytic AB C927 RC-EZ0439GEZZ J 2200 16V Electrolytic AF C928 VCEA0A1EW107M V 100 25V Electrolytic AC C929 RC-EZ0438GEZZ J 2200 10V Electrolytic AF C930 VCEA0A0JW108M V 1000 6.3V Electrolytic AC C931 VCEA0A1HW476M V 47 50V Electrolytic AB C932 VCQYTA1HM103J V 0.01 50V Mylar AA C933 VCEA9A1HW105M V 1 50V Electrolytic AB C941 VCEA9A1CW476M V 47 16V Electrolytic AB C942 VCEA9M0JW476M V 47 6.3V Electrolytic AB C943 VCEA9M0JW226M V 22 6.3V Electrolytic AB C944 VCEA9M1CW476M V 47 16V Electrolytic AB C953 VCEA9M0JW226M V 22 6.3V Electrolytic AB C954 VCEA9M1HW105M V 1 50V Electrolytic AB C956 VCEA9M0JW226M V 22 6.3V Electrolytic AB C971 VCEA9M0JW226M V 22 6.3V Electrolytic AB C981 VCEA9M0JW476M V 47 6.3V Electrolytic AB C982 VCEA9M0JW226M V 22 6.3V Electrolytic AB C985 VCEA9M0JW476M V 47 6.3V Electrolytic AB C991 VCEA9M1CW476M V 47 16V Electrolytic AB C992 VCEA9M1CW226M V 22 16V Electrolytic AB

RESISTORS

R101 VRS-CY1JF470J V 47 1/16W Metal Oxide AA R103 VRS-CY1JF473J V 47k 1/16WMetal Oxide AA R107 VRS-CY1JF822J V 8.2k 1/16W Metal Oxide AA R110 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R111 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R112 VRS-CY1JF224J V 220k 1/16WMetal Oxide AA R113 VRD-RA2BE561J V 560 1/8W Carbon AA R201 VRS-CY1JF682J V 6.8k 1/16W Metal Oxide AA R202 VRS-CY1JF182J V 1.8k 1/16W Metal Oxide AA R203 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R207 VRS-CY1JF101J V 100 1/16W Metal Oxide AA R225 VRD-RA2BE750J V 75 1/8W Carbon AA R226 VRS-CY1JF101J V 100 1/16W Metal Oxide AA R227 VRS-CY1JF750J V 75 1/16W Metal Oxide AA R228 VRS-CY1JF750J V 75 1/16W Metal Oxide AA

(VC-A280NZ/X,A480NZ/X)

R229 VRS-CY1JF101J V 100 1/16W Metal Oxide AA

(VC-A280NZ/X,A480NZ/X) R232 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R233 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R252 VRD-RA2EE331J V 330 1/4W Carbon AA R253 VRS-CY1JF101J V 100 1/16W Metal Oxide AA R254 VRS-CY1JF331J V 330 1/16W Metal Oxide AA R256 VRS-CY1JF472J V 4.7k 1/16W Metal Oxide AA R301 VRS-CY1JF473J V 47k 1/16WMetal Oxide AA

(VC-A480NZ/X) R303 VRS-CY1JF392J V 3.9k 1/16W Metal Oxide AA R305 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA

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Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

R306 VRS-CY1JF561J V 560 1/16W Metal Oxide AA R309 VRS-CY1JF222J V 2.2k 1/16W Metal Oxide AA R311 VRS-CY1JF473J V 47k 1/16WMetal Oxide AA

(VC-A230NZ/X,A280NZ/X) R330 VRS-CY1JF222J V 2.2k 1/16W Metal Oxide AA R331 VRD-RA2BE102J V 1k 1/8W Carbon AA R501 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R502 VRS-CY1JF273J V 27k 1/16WMetal Oxide AA R504 VRS-CY1JF221J V 220 1/16W Metal Oxide AA R513 VRD-RA2BE224J V 220k 1/8W Carbon AA R601 VRS-CY1JF822J V 8.2k 1/16W Metal Oxide AA R602 VRS-CY1JF274J V 270k 1/16WMetal Oxide AA R603 VRS-CY1JF221J V 220 1/16W Metal Oxide AA R604 VRS-CY1JF473J V 47k 1/16WMetal Oxide AA R605 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R606 VRS-CY1JF273J V 27k 1/16WMetal Oxide AA R607 VRS-CY1JF561J V 560 1/16W Metal Oxide AA R608 VRS-CY1JF472J V 4.7k 1/16W Metal Oxide AA R611 VRS-CY1JF393J V 39k 1/16WMetal Oxide AA R612 VRS-CY1JF123J V 12k 1/16WMetal Oxide AA R613 VRS-CY1JF393J V 39k 1/16WMetal Oxide AA

(VC-A280NZ/X,A480NZ/X) R614 VRS-CY1JF123J V 12k 1/16WMetal Oxude AA

(VC-A280NZ/X,A480NZ/X) R616 VRS-CY1JF103J V 10k 1/16WMetal Oxide AA R618 VRS-CY1JF563J V 56k 1/16WMetal Oxide AA R619 VRS-CY1JF470J V 47 1/16W Metal Oxide AA R620 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R621 VRD-RA2EE4R7J V 4.7 1/4W Carbon AA R623 VRS-CY1JF393J V 39k 1/16WMetal Oxide AA R624 VRS-CY1JF224J V 220k 1/16WMetal Oxide AA R627 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R630 VRS-CY1JF104J V 100k 1/16WMetal Oxide AA R631 VRS-CY1JF124J V 120k 1/16WMetal Oxide AA R632 VRS-CY1JF562J V 5.6k 1/16W Metal Oxide AA R633 VRS-CY1JF104J V 100k 1/16WMetal Oxide AA R634 VRS-CY1JF104J V 100k 1/16WMetal Oxide AA R635 VRS-CY1JF473J V 47k 1/16WMetal Oxide AA R636 VRS-CY1JF101J V 100 1/16W Metal Oxide AA R674 VRS-CY1JF473J V 47k 1/16WMetal Oxide AA R675 VRS-CY1JF183J V 18k 1/16WMetal Oxide AA R702 VRD-RA2BE102J V 1k 1/8W Carbon AA R703 VRD-RA2BE102J V 1k 1/8W Carbon AA R704 VRD-RA2BE102J V 1k 1/8W Carbon AA R705 VRD-RA2BE102J V 1k 1/8W Carbon AA R706 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R707 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R708 VRD-RA2BE102J V 1k 1/8W Carbon AA R710 VRS-CY1JF473J V 47k 1/16WMetal Oxide AA R711 VRS-CY1JF473J V 47k 1/16WMetal Oxide AA R712 VRS-CY1JF223J V 22k 1/16WMetal Oxide AA R713 VRS-CY1JF564J V 560k 1/16WMetal Oxide AA R714 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R715 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R716 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R717 VRS-CY1JF331J V 330 1/16W Metal Oxide AA R718 VRS-CY1JF182J V 1.8k 1/16W Metal Oxide AA R719 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R720 VRS-CY1JF822J V 8.2k 1/16W Metal Oxide AA R721 VRS-CY1JF274J V 270k 1/16WMetal Oxide AA R722 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R723 VRS-CY1JF331J V 330 1/16W Metal Oxide AA R727 VRD-RA2EE151J V 150 1/4W Carbon AA R728 VRS-CY1JF182J V 1.8k 1/16W Metal Oxide AA R729 VRD-RA2BE154J V 150k 1/8W Carbon AA R731 VRS-CY1JF103J V 10k 1/16WMetal Oxide AA R732 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R734 VRD-RA2BE223J V 22k 1/8W Carbon AA R735 VRS-CY1JF393J V 39k 1/16WMetal Oxide AA R736 VRS-CY1JF183J V 18k 1/16WMetal Oxide AA R737 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R738 VRD-RA2BE104J V 100k 1/8W Carbon AA R739 VRD-RA2BE271J V 270 1/8W Carbon AA R740 VRD-RA2BE104J V 100k 1/8W Carbon AA R741 VRD-RA2BE271J V 270 1/8W Carbon AA

R742 VRS-CY1JF473J V 47k 1/16W Metal Oxide AA R743 VRD-RA2BE391J V 390 1/8W Carbon AA R744 VRS-CY1JF473J V 47k 1/16W Metal Oxide AA R745 VRD-RA2BE391J V 390 1/8W Carbon AA R746 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R748 VRS-CY1JF1R0J V 1 1/16W Metal Oxide AA R749 VRD-RM2HD271J V 270 1/2W Carbon AA R751 VRD-RA2BE123J V 12k 1/8W Carbon AA R752 VRD-RA2BE123J V 12k 1/8W Carbon AA R753 VRD-RA2BE102J V 1k 1/8W Carbon AA R756 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R758 VRD-RA2BE103J V 10k 1/8W Carbon AA R760 VRS-CY1JF104J V 100k 1/16W Metal Oxide AA R761 VRS-CY1JF104J V 100k 1/16W Metal Oxide AA R762 VRS-CY1JF123J V 12k 1/16W Metal Oxide AA R763 VRS-CY1JF563J V 56k 1/16W Metal Oxide AA R764 VRS-CY1JF183J V 18k 1/16W Metal Oxide AA R765 VRS-CY1JF333J V 33k 1/16W Metal Oxide AA R768 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R770 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R771 VRS-CY1JF104J V 100k 1/16W Metal Oxide AA R773 VRS-CY1JF222J V 2.2k 1/16W Metal Oxide AA R776 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R777 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R779 VRD-RA2BE103J V 10k 1/8W Carbon AA R780 VRD-RA2BE103J V 10k 1/8W Carbon AA R781 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R782 VRS-CY1JF104J V 100k 1/16W Metal Oxide AA R783 VRS-CY1JF392J V 3.9k 1/16W Metal Oxide AA R784 VRS-CY1JF104J V 100k 1/16W Metal Oxide AA R785 VRS-CY1JF105J V 1M 1/16WMetal Oxide AA R786 VRS-CY1JF564J V 560k 1/16W Metal Oxide AA R787 VRD-RM2HD1R0J V 1 1/2W Carbon AA R788 VRD-RM2HD1R0J V 1 1/2W Carbon AA R791 VRS-CY1JF1R0J V 1 1/16W Metal Oxide AA R794 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R795 VRD-RA2BE125J V 1.2M 1/8W Carbon AA R796 VRD-RA2BE103J V 10k 1/8W Carbon AA R798 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R813 VRD-RA2BE183J V 18k 1/8W Carbon AA R814 VRS-CY1JF272J V 2.7k 1/16W Metal Oxide AA R815 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R821 VRS-CY1JF183J V 18k 1/16W Metal Oxide AA R822 VRS-CY1JF272J V 2.7k 1/16W Metal Oxide AA R823 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R824 VRS-CY1JF472J V 4.7k 1/16W Metal Oxide AA R825 VRS-CY1JF822J V 8.2k 1/16W Metal Oxide AA R826 VRS-CY1JF333J V 33k 1/16W Metal Oxide AA R831 VRD-RA2BE101J V 100 1/8W Carbon AB R832 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R833 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R834 VRD-RA2BE103J V 10k 1/8W Carbon AA R843 VRD-RA2BE103J V 10k 1/8W Carbon AA R849 VRD-RA2BE104J V 100k 1/8W Carbon AA R862 VRD-RA2BE102J V 1k 1/8W Carbon AA R863 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R864 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R865 VRS-CY1JF471J V 470 1/16WMetal Oxide AA R866 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA

å R901 VRD-RM2HD105J V 1M 1/2W Carbon AA å R902 RR-HZ0014GEZZ J 1.2M 1W AE å R903 RR-WZ0018GEZZ J 4.7 2W AD å R905 VRD-RM2HD154J V 150k 1/2W Carbon AA å R906 VRD-RM2HD154J V 150k 1/2W Carbon AA å R908 VRS-CY1JF473J V 47k 1/16W Metal Oxide AA å R910 VRN-VV3DBR22J V 0.22 2W Metal Film AB å R911 VRD-RA2EE471J V 470 1/4W Carbon AA å R912 VRD-RA2BE470J V 47 1/8W Carbon AA å R913 VRS-CY1JF183J V 18k 1/16W Metal Oxide AA å R914 VRD-RA2BE471J V 470 1/8W Carbon AA å R915 VRS-CY1JF470J V 47 1/16WMetal Oxide AA å R916 VRS-CY1JF153J V 15k 1/16W Metal Oxide AA

R921 VRS-CY1JF1R0J V 1 1/16W Metal Oxide AA R923 VRS-CY1JF104J V 100k 1/16W Metal Oxide AA R924 VRS-CY1JF273J V 27k 1/16W Metal Oxide AA

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Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

R925 VRS-CY1JF100J V 10 1/16WMetal Oxide AA R926 VRD-RA2BE331J V 330 1/8W Carbon AA R927 VRD-RA2BE102J V 1k 1/8W Carbon AA R929 VRD-RA2BE471J V 470 1/8W Carbon AA R930 VRD-RA2BE122J V 1.2k 1/8W Carbon AA R931 VRD-RA2BE152J V 1.5k 1/8W Carbon AA R932 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R940 VRD-RM2HD471J V 470 1/2W Carbon AA R941 VRS-CY1JF333J V 33k 1/16W Metal Oxide AA R942 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R943 VRD-RM2HD561J V 560 1/2W Carbon AA R944 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R945 VRS-CY1JF473J V 47k 1/16W Metal Oxide AA R946 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R947 VRS-CY1JF821J V 820 1/16WMetal Oxide AA R948 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R949 VRD-RA2BE472J V 4.7k 1/8W Carbon AA R950 VRD-RA2BE223J V 22k 1/8W Carbon AA R951 VRS-CY1JF223J V 22k 1/16W Metal Oxide AA R952 VRS-CY1JF223J V 22k 1/16W Metal Oxide AA R954 VRS-CY1JF561J V 560 1/16WMetal Oxide AA R955 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R956 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R957 VRS-CY1JF152J V 1.5k 1/16W Metal Oxide AA R958 VRD-RM2HD182J V 1.8k 1/2W Carbon AA R959 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R960 VRN-VV3DB1R0J V 1 2W Metal Film AB R963 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R964 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R965 VRS-CY1JF223J V 22k 1/16W Metal Oxide AA R973 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R974 VRS-CY1JF152J V 1.5k 1/16W Metal Oxide AA R981 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R982 VRS-CY1JF561J V 560 1/16WMetal Oxide AA R984 VRS-CY1JF102J V 1k 1/16W Metal Oxide AA R988 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R991 VRS-CY1JF331J V 330 1/16WMetal Oxide AA R992 VRS-CY1JF222J V 2.2k 1/16W Metal Oxide AA R993 VRS-CY1JF103J V 10k 1/16W Metal Oxide AA R7701 VRS-CY1JF223J V 22k 1/16W Metal Oxide AA R7704 VRS-CY1JF473J V 47k 1/16W Metal Oxide AA R7705 VRS-CY1JF154J V 150k 1/16W Metal Oxide AA R7706 VRS-CY1JF822J V 8.2k 1/16WMetal Oxide AA R7707 VRS-CY1JF154J V 150k 1/16W Metal Oxide AA

MISCELLANEOUS PARTS

å ACC901 QACCL3004AJZZ V AC Cord AT å F901 QFS-C2025CEZZ V Fuse, 2A/250V AD

FB201 RBLN-0036CEZZ V Ferrite Bead AB FB202 RBLN-0036CEZZ V Ferrite Bead AB FB203 RBLN-0036CEZZ V Ferrite Bead AB FB701 RBLN-0036CEZZ V Ferrite Bead AB FB702 RBLN-0036CEZZ V Ferrite Bead AB

å FB903 RBLN-0036CEZZ V Ferrite Bead AB

FB904 RBLN-0036CEZZ V Ferrite Bead AB

å FB906 RBLN-0043CEZZ V Ferrite Bead AB å FH901 QFSHD1013CEZZ V Fuse Holder AC å FH902 QFSHD1014CEZZ V Fuse Holder AC

J201 QJAKH0011AJZZ V Jack AK J202 QJAKF0012AJZZ V Jack AL

(VC-A280NZ/X,A480NZ/X) P201 QPLGN0447REZZ V Plug AA P701 QPLGZ0883GEZZ J Plug, 8pin(AC) AD

å P901 QPLGN0269GEZZ J Plug, 2pin(AP) AB

RMC801 RRMCU0002AJZZ V Remote Receiver AH S701 QSW-F0042AJZZ V Rec Tip Switch AG S702 QSW-F0043GEZZ J Switch AD S807 QSW-K0002AJZZ V Switch, CH- AD S808 QSW-K0002AJZZ V Switch, MENU AD S809 QSW-K0002AJZZ V Switch, SET AD S810 QSW-K0002AJZZ V Switch, CH+ AD S811 QSW-K0002AJZZ V Switch, EJECT AD S813 QSW-K0002AJZZ V Switch, POWER AD SC101 QSOCN0263FJ00 V Socket, 14pin AE SC301 QSOCN0464REZZ V Socket, 4pin(AH) AC

SC301 QSOCN0611REN1 V Socket, 6pin(AH) AC

(VC-A230NZ/X,A280NZ/X)

(VC-A480NZ/X) SC601 QSOCN0604REN1 V Socket, 6pin(AA) AB SC602 QSOCZ0293GEZZ J Socket, 2pin(AE) AC SC701 QSOCN0704REN1 V Socket, 7pin(AD) AB SC702 QSOCZ0292GEZZ J Socket, 2pin(AL) AC SC801 QSOCZ0625CEZZ V Socket, 6pin(AO) AC TP101 QPLGN0447REZZ V Plug, 4pin AA W851 LHLDZ1962AJ00 V Holder AD W852 LHLDZ1962AJ00 V Holder AD

DUNTK5758TEV1

Operation Unit

RESISTORS

R881 VRS-CY1JF472J V 4.7k 1/16W Metal Oxide AA R882 VRS-CY1JF822J V 8.2k 1/16W Metal Oxide AA R883 VRS-CY1JF103J V 10k 1/16WMetal Oxide AA

MISCELLANEOUS PARTS

P881 QPLGZ0626CEZZ V Plug, 6pin(OA) AF S881 QSW-Z0001AJZZ V Shuttle Switch AQ S882 QSW-K0002AJZZ V Switch, REC AD S883 QSW-K0002AJZZ V Switch, PAUSE/STILL AD S884 QSW-K0002AJZZ V Switch, PLAY AD S885 QSW-K0002AJZZ V Switch, STOP AD

DUNTK5767TEV1

IF Unit

INTEGRATED CIRCUITS

IC1602 VHiM52760SP-1 V M52760SP AK

TRANSISTORS

Q1601 VS2SC2735//1E V 2SC2735 AC Q1611 VS2SA1530ARS1 V 2SA1530AR AA Q1612 VS2SC3052EF-1 V 2SC3052EF AA

DIODE

D1601 VHDDAN202K/1E V DAN202K AB

COILS

CF1601 RFILC0020CEZZ V Filter AE CF1607 RFILC0270CEZZ V Filter AD L1602 VP-XF4R7K0000 V Peaking 4.7µHAB L1606 VP-XF150J0000 V Peaking 15µHAB L1608 VP-XF390J0000 V Peaking 39µHAB L1611 VP-XF220J0000 V Peaking 22µHAB L1612 VP-DF221K0000 V Peaking 220µHAB SF1602 RFILC0203GEZZ J Filter AK

TRANSFORMERS

T1601 RCILD0073GEZZ J Detection Coil AE

CONTROLS

R1626 RVR-M4811GEZZ J Variable Resistor AC

CAPACITORS

C1601 VCKYCY1EB103K V 0.01 25V Ceramic AA C1602 VCKYCY1HF103Z V 0.01 50V Ceramic AA C1604 VCKYCY1HF103Z V 0.01 50V Ceramic AA C1606 VCEAEM1CW476M V 47 16V Electrolytic AB C1608 VCKYCY1EB103K V 0.01 25V Ceramic AA C1613 VCCCCY1HH2R0K V 2p 50V Ceramic AA C1615 VCKYCY1EB103K V 0.01 25V Ceramic AA C1616 VCKYCY1HF103Z V 0.01 50V Ceramic AA C1617 VCEAEM1CW106M V 10 16V Electrolytic AB C1618 VCEAEM1HW334M V 0.33 50V Electrolytic AB C1619 VCKYCY1HF103Z V 0.01 50V Ceramic AA C1622 VCKYCY1CB473K V 0.047 16V Ceramic AA C1623 VCCCCY1HH390J V 39p 50V Ceramic AA C1625 VCKYCY1HF103Z V 0.01 50V Ceramic AA

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Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

C1626 VCEAEA1CW476M V 47 16V Electrolytic AB C1627 VCEAEM1HW474M V 0.47 50V Electrolytic AB C1631 VCKYCY1HF103Z V 0.01 50V Ceramic AA C1632 VCKYCY1EB103K V 0.01 25V Ceramic AA C1633 VCCCCY1HH3R0J V 3 50V Ceramic AA C1634 VCEAEM1CW476M V 47 16V Electrolytic AB C1635 VCKYCY1HF103Z V 0.01 50V Ceramic AA C1636 VCCCCY1HH330J V 33p 50V Ceramic AA C1638 VCCCCY1HH330J V 33p 50V Ceramic AA C1642 VCKYCY1HF103Z V 0.01 50V Ceramic AA

RESISTORS

R1601 VRS-CY1JF680J V 68 1/16W Metal Oxide AA R1603 VRS-CY1JF562J V 5.6k 1/16W Metal Oxide AA R1604 VRS-CY1JF122J V 1.2k 1/16W Metal Oxide AA R1607 VRD-RA2BE221J V 220 1/8W Carbon AA R1608 VRS-CY1JF222J V 2.2k 1/16W Metal Oxide AA R1609 VRS-CY1JF330J V 33 1/16W Metal Oxide AA R1618 VRS-CY1JF222J V 2.2k 1/16W Metal Oxide AA R1619 VRS-CY1JF223J V 22k 1/16WMetal Oxide AA R1620 VRS-CY1JF104J V 100k 1/16WMetal Oxide AA R1621 VRS-CY1JF332J V 3.3k 1/16W Metal Oxide AA R1625 VRS-CY1JF223J V 22k 1/16WMetal Oxide AA R1628 VRD-RA2BE105J V 1M 1/8W Carbon AA R1629 VRS-CY1JF124J V 120k 1/16WMetal Oxide AA R1630 VRS-CY1JF222J V 2.2k 1/16W Metal Oxide AA R1631 VRS-CY1JF682J V 6.8k 1/16W Metal Oxide AA R1632 VRS-CY1JF182J V 1.8k 1/16W Metal Oxide AA R1637 VRS-CY1JF562J V 5.6k 1/16W Metal Oxide AA R1638 VRS-CY1JF680J V 68 1/16W Metal Oxide AA R1639 VRS-CY1JF561J V 560 1/16W Metal Oxide AA R1640 VRS-CY1JF101J V 100 1/16W Metal Oxide AA R1643 VRS-CY1JF561J V 560 1/16W Metal Oxide AA R1644 VRS-CY1JF271J V 270 1/16W Metal Oxide AA R1645 VRS-CY1JF471J V 470 1/16W Metal Oxide AA R1646 VRS-CY1JF222J V 2.2k 1/16W Metal Oxide AA R1647 VRS-CY1JF182J V 1.8k 1/16W Metal Oxide AA R1650 VRS-CY1JF153J V 15k 1/16WMetal Oxide AA R1651 VRS-CY1JF562J V 5.6k 1/16W Metal Oxide AA R1656 VRS-CY1JF471J V 470 1/16W Metal Oxide AA R1660 VRD-RA2BE151J V 150 1/8W Carbon AA R1661 VRS-CY1JF151J V 150 1/16W Metal Oxide AA R1664 VRS-CY1JF681J V 680 1/16W Metal Oxide AA

MISCELLANEOUS PARTS

SC1601 QPLGN0246FJ00 V Plug, 14pin(IA) AD

MECHANISM CHASSIS PARTS

1 LBNDK1011AJZZ V Tension Band Ass’y AH 2 LBOSZ1007AJZZ V Tension Arm boss AD 3 LBOSZ1006AJZZ V Cassette Stay L AD 5 LCHSM0174AJZZ V Main Chassis Ass’y AV 6 LHLDZ2016AJZZ V Loading Motor Block AG 7 LPOLM0070GEZZ J Supply Pole Base Ass’y AK 8 LPOLM0064GEZZ J Take-Up Pole Base Ass’y AM 9 MLEVF0518AJZZ V Take-Up Loading AF

Arm Ass’y

10 MLEVF0519AJZZ V Supply Loading AF

Arm Ass’y 11 MLEVF0499AJZZ V Pinch Drive Lever Ass’y AG 12 MLEVF0500GEZZ J Pinch Roller Lever Ass’y AW 15 MLEVF0523AJZZ V Tension Arm Ass’y AH 16 LANGF9620AJFW V A/C Head Plate AG 17 MLEVP0271AJZZ V Sifter Drive Lever AE 18 MLEVP0272AJZZ V Pinch Double Action LeverAD 19 MLEVP0301AJZZ V Reverse Guide Lever Ass’yAL 20 MLEVP0275AJZZ V Reverse Drive Lever AD 21 MLEVP0292AJZZ V Slow Brake Lever AE 22 MLEVP0290AJZZ V Open Lever AD 23 MLEVP0293AJZZ V Clutch Lever AE

24 MLEVP0324AJZZ V Sup Main Brake Ass’y AF 25 MLEVP0325AJZZ V Take-Up Main Brake AF

Ass’y 26 CLEVP0287GEZZ J Auto Head Cleaner Ass’y AG 27 MSLiP0010AJZZ V Sifter AH 29 MSPRD0175AJFJ V Reverse Guide Spring 2 AE 30 MSPRT0402AJFJ V Loading Double Action AE

Spring 31 MSPRT0403AJFJ V Pinch Double Action AD

Spring 32 MSPRC0213AJFJ V Earth Spring AC 33 MSPRT0416AJFJ V Tension Spring AD 34 NBLTK0067AJ00 V Reel Belt AE 35 NDAiV1078AJ00 V Reel Disk AE 36 NGERH1293AJZZ V Loading Connect Gear AD 37 NGERH1295AJ00 V Master Cam AE 38 NGERH1294AJZZ V Casecon Drive Gear AD 39 NGERH1270AJZZ V Take-Up Loading Gear AF 40 NGERH1271AJZZ V Supply Loading Gear AD 41 NGERH1272AJZZ V Pinch Drive Cam AE 43 NGERH1299AJZZ V Reel Relay Gear AE 44 NGERW1070AJZZ V Worm Gear AD 45 NGERW1066AJZZ V Worm Wheel Gear AD 46 NiDR-0018AJZZ V Idler Wheel Ass’y AK 47 NPLYV0162AJZZ V Motor Pully AD 48 NPLYV0163AJZZ V Limitter Pulley Ass’y AM 49 NROLP0131GEZZ J Guide Roller AL 50 NSFTP0032AJZZ V Tension Pole Adjuster AB 51 MSPRC0217AJFJ V Guide Roller Spring AC 52 PREFL1011AJZZ V Light Guide AE 53 QCNW-8022AJZZ V FFC for Drum Motor AF 55 QCNW-8021AJZZ V FFC for A/C Head AF 56 QPWBF5243AJZZ V A/C Head PWB AE 57 QSOCN0605REN1 V Socket, 6 pin AB 58 RHEDT0036AJZZ V Full Erase Head AM 59 RHEDU0088GEZZ J A/C Head Ass’y AV 60 RMOTM1078GEZZ J Loading Motor AP 61 RMOTN2055GEZZ J Capstan Motor BA 62 RMOTP1141GEZZ J Drum Drive Motor AV 63 DDRMW0028TEX3 V Upper and lower drum BP

Ass’y

(VC-A230NZ/X,A280NZ/X) 63 DDRMW0029TEX2 V Upper and lower drum BP

Ass’y (VC-A480NZ/X) 65 QBRSK0041GEZZ J Drum Earth Brush AD 66 XBPSD26P05J00 V Drum Drive Motor AA

Mounting Screw

(SW2.6P+5S) 67 PGIDC0056GEFW J Drum Base AL 68 QPWBF5468AJZZ V PWB(LDG Motor) AE 69 QPLGZ0292GEZZ J Socket(LDG Motor) AE 70 MSPRC0223AJFJ V Azimuth Spring AC 71 MSPRC0224AJFJ V Height Adjusting spring AC

SCREW, NUTS AND WASHERS

201 XBPSD26P08000 V Screw 2.6P+8S A/C Head AA 202 LX-HZ3082GEZZ J WSW2.6+6 (AC) AD 203 XHPSD26P06000 V Screw, C2.6P+6S” AA

(For Capstan Motor) 207 XHPSD30P08WS0 V Screw, C3.0P+8S” AA

(For Drum Base) 208 XRESJ30-06000 V E-Ring, E-3” AA 209 XWHJZ31-03052 V Washer, W3.1-5.2-0.3” AC 210 XWHJZ31-04052 V Washer, W3.1-5.2-0.4” AC 211 XWHJZ31-05052 V Washer, W3.1-5.2-0.5” AC 212 XWHJZ31-06052 V Washer, W3.1-5.2-0.6” AC 213 XWHJZ31-07052 V Washer, W3.1-5.2-0.7” AC 214 PSPAP0009AJZZ V Reverse Guide AB

Adjusting Nut 216 LX-WZ1041GE00 J CW 2.6-6-0.5 CAM AA 218 XBPSD30P08J00 V Drum Base Mounting AA

Screw (SW 3P+8S)

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Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

219 LX-WZ1098GE00 J CW 2.6-4.7-0.5 RED AB 220 LX-BZ3096GEFD J Tilt Adjusting Screw AA 221 XBPSD26P06000 V Azimuth Adjusting Screw AA

2.6+6S 222 LX-BZ3197GEFD J Screw (A/C Head) AD 223 XWHJZ31-08052 V Washer, W3.1-5.2-0.8” AC 224 LX-RZ3015GEFJ J CS Washer

CASSETTE HOUSING CONTROL PARTS

300 CHLDX3081TEV2 V Cassette Housing AX

Control Ass’y 301 LANGF9592AJFW V Upper Plate AL 302 LHLDX1028AJ00 V Frame (L) AH 303 LHLDX1032AJ00 V Frame (R) AH 304 LHLDX1030AJZZ V Holder (L) AE 305 LHLDX1031AJZZ V Holder (R) AE 306 MLEVF0469AJFW V Proof Lever (R) AE 307 MLEVP0281AJ00 V Door Open Lever AD 308 MSLiF0076AJFW V Slider AK 309 MSPRD0151AJFJ V Proof Lever (R) Spring AB 310 MSPRD0166AJFJ V Drive Gear (R) Spring AE 311 MSPRP0175AJFJ V Cassette Spring AE 312 MSPRT0381AJFJ V Double Action Spring AC 313 NGERH1278AJZZ V Drive Gear L AE 314 NGERH1309AJZZ V Drive Gear R AE 315 NGERR1008AJ00 V Double Action Rack Gear AE 316 NGERR3005AJFW V Drive Angle Gear AG 317 NSFTD0041AJFD V Main Shaft AH

CABINT PARTS

500-4 HDECQ2063AJSA V Window Dec. AK 500-5 JBTN-2979AJSA V Button, REC AC 500-6 JBTN-2939AJSA V Button, SET-UP AF 500-7 MSPRD0103AJFJ V Cassette Spring AB 502 CBTN-2869TEV2 V PLAY Button Ass’y AL 502-1 JBTN-2869AJSA V Button, PLAY AK 502-2 LHLDZ2021AJZZ V Button Holder AE 502-3 JKNBK1106AJSA V Knob AG 503 TLABZ1610AJZZ V Feature Label

SUPPLIED ACCESSORIES

ACCESSORIES

QCNW-0323AJZZ V 75 ohm Coaxial Cable AK TiNS-3627AJZZ V Operation Manual

(VC-A230NZ)

TiNS-3626AJZZ V Operation Manual

(VC-A230X)

TiNS-3631AJZZ V Operation Manual

(VC-A280NZ,A480NZ)

TiNS-3632AJZZ V Operation Manual

(VC-A280X,A480X)

RRMCG1206AJSA V Infrared Remote Control

Unit (VC-A230NZ/X)

RRMCG1196AJSA V Infrared Remote Control AV

Unit (VC-A280NZ/X,A480 NZ/X)

ACCESSORIES

(Not Replacement Item)

TGAN-0068PEZZ - Guarantee Card —

600 GCABA3131AJSA V Top Cabinet AR 601 GCABB1207AJKH V Main Frame AN 602 GCOVA2143AJZZ V Antenna Terminal Cover 603 PSLDM4566AJFW V Shield Angle AD 604 XHPSD26P06WS0 V Screw AA 605 XHPSD30P06WS0 V Screw AA 606 LANGK0197AJFW V Top Cabinet Fixing Angle AG 607 XEPSD30P14XS0 V Screw AB 608 LX-HZ3047GEFF J Screw AA 609 XEBSD30P12000 V Screw AA 610 LX-HZ3087GEFN J Screw AB 611 PSLDM4562AJFW V H/A Shield Top AF 612 LHLDZ1962AJ00 V Sensor LED Cover AD 613 PGUMS0026AJZZ V Foot Cushion AB 614 TLABM4067AJZZ V Model Label 614 TLABM4066AJZZ V Model Label 614 TLABM4069AJZZ V Model Label 614 TLABM4068AJZZ V Model Label 614 TLABM4070AJZZ V Model Label 614 TLABM4064AJZZ V Model Label 615 XJPSD30P10WS0 V Screw AA 616 LHLDZ2074AJZZ V PWB Holder AD 618 QEARP0451AJFW V Earth Plate AG

FRONT PANEL PARTS

500 CPNLC2647TEV1 V Front Panel Ass’y

(VC-A230NZ/X) 500 CPNLC2648TEV1 V Front Panel Ass’y

(VC-A280NZ/X) 500 CPNLC2649TEV1 V Front Panel Ass’y

(VC-A480NZ/X) 500-2 HBDGB1010AJSA V SHARP Badge AG 500-3 HDECQ2100AJSA V Cassette Flap AK

(VC-A230NZ/X,A280NZ/X) 500-3 HDECQ2101AJSA V Cassette Flap AK

(VC-A480NZ/X)

PACKING PARTS

(NOT REPLACEMENT ITEM)

SPAKC4136AJZZ - Packing Case SPAKC4135AJZZ - Packing Case SPAKC4138AJZZ - Packing Case SPAKC4137AJZZ - Packing Case SPAKC4139AJZZ - Packing Case SPAKC4133AJZZ - Packing Case SPAKX1057AJZZ - Packing Foam — SSAKA0001AJZZ - Polyethylene Bag — SPAKP0114AJZZ - Foam Bag — TLABK0005AJZZ - No. Label —

(VC-A230NZ) (VC-A230X) (VC-A280NZ) (VC-A280X) (VC-A480NZ) (VC-A480X)

— — — — — —

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Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

11. EXPLODED VIEW

MECHANISM CHASSIS EXPLODED VIEW

218

222

202

207

221

201

202

220

202

207

209 210 211 212 213

223

46 43

224

219

224

214

203

208

216

7654321

Page 70

VC-A230NZ/X

7654321

VC-A280NZ/X VC-A480NZ/X

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

CASSETTE HOUSING CONTROL EXPLODED VIEW

300

301

304

302

311

305

306

308

309

313

310

317

303

314

307

315

312

316

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

MECHANICAL EXPLODED VIEW

600

602

609

605

607

608

611

604

615

616

615

603

612

618

610

614

605

613

601

609

606

615

7654321

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

FRONT PANEL EXPLODED VIEW

500-7

500-3

500

500-2

500-6

500-4

503

502

123456

PRECAUTION ON FRONT PANEL SET-UP

Cassette cover open lever

Cassette housing

Before attaching the front panel in position, make sure that the cassette cover open lever is in its right place (lower-most). If it is out of position, push it down with a finger.

Cassette cover open lever

Keep the cassette over about 45° open and make sure that the cassette cover open lever is between the front panel and the cassette cover. Now fix the front panel in place.

502-1

About 45°

502-2

Front panel

Cassette cover

Cassette cover open lever

Do not mount the front panel with the cassette cover tilted too open. Otherwise the cassette cover might wrongly run on the cassette housing.

502-3

500-5

Cassette cover

Removing the cassette compartment cover. 1 Open the cassette compartment cover

fully. 2 Remove the center positioner. 3 Slide the cover to the right. 4 Slightly bend the cover. 5 Draw out the left-side rod.

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VC-A230NZ/X VC-A280NZ/X VC-A480NZ/X

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code

12. PACKING OF THE SET

Accessories

TiNS-3627AJZZ Operation Manual (VC-A230NZ) TiNS-3626AJZZ Operation Manual (VC-A230X) TiNS-3631AJZZ Operation Manual (VC-A280NZ,A480NZ) TiNS-3632AJZZ Operation Manual (VC-A280X,A480X)

★ TGAN-0068PEZZ Guarantee Card

RRMCG1206AJSA (VC-A230NZ/X) RRMCG1196AJSA(VC-A280NZ/X,A480NZ/X)

Infrared Remote Control Unit

QCNW-0323AJZZ

75 ohm Coaxial Cable

★ SPAKX1057AJZZ

Packing Foam

★ Dry Battery

SSAKA0001AJZZ

Polyethylene Bag

★ SPAKP0114AJZZ

Form Bag

★ TLABK0005AJZZ No. Label

MARK ★Not Replacement Item

TQ0737-S

Nov. 1999 Printed in Japan

SA. KY

★ SPAKC4136AJZZ ★ SPAKC4135AJZZ ★ SPAKC4138AJZZ ★ SPAKC4137AJZZ ★ SPAKC4139AJZZ ★ SPAKC4133AJZZ

Packing Case

(VC-A230NZ) (VC-A230X) (VC-A280NZ) (VC-A280X) (VC-A480NZ) (VC-A480X)

SHARP CORPORATION AV Systems Group Quality & Reliability Control Center Yaita, Tochigi 329-2193, Japan

Sharp VC-A480NZ-X, VC-A280NZ-X, VC-A230NZ-X Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual