Panasonic DVC PRO Studio AJ-D950P User manual

ORDER No. VS9805M907A
D25
DVC PRO Studio VTR/Analog Video Interface Kit
AJ-D950P / AJ-D950E / AJ-PD950P / AJ-YA951E
1. INTRODUCTION
Thisservice manual containstechnical information which allow service personnel to understand
and service the DVCPRO Studio VTR AJ-D950.
1.1. Specifications
1.1.1. AJ-D950P
1.1.2. AJ-D950E
2. SAFETY PRECAUTIONS
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2.1. GENERAL GUIDELINES
1. When servicing, observe the original lead dress. If a short circuit is
found, replace all parts which have been overheated or damaged
by the short circuit.
2. After servicing, make the following leakage current checks to
prevent the customer from being exposed to shock properly
installed.
3. After servicing, make the following leakage current checks to
prevent the customer from being exposed to shock hazards.
2.2. LEAKAGE CURRENT COLD CHECK
1. Unplug the AC cord and connect a jumper between the two prongs
on the plug.
2. Measure the resistance value, with an ohmmeter, between the
jumpered AC plug and each exposed metallic cabinet part on the
equipment such as screwheads, connectors, control shafts, etc.
When the exposed metallic part has a return path to the chassis,
the reading should be between 1M and 5.2M .When the
exposed metal does not have a return path to the chassis, the
reading must be infinity.
Figure 1
2.3. LEAKAGE CURRENT HOT CHECK (See Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation
transformer for this check.
2. Connect a 1.5k ,10 W resistor, in parallel with a 0.15 capacitor,
between each exposed metallic part on the set and a good earth
ground such as a water pipe, as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to
measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at
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each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above
measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A
leakage current tester (Simpson Model 229 equivalent) may be
used to make the hot checks, leakage current must not exceed 1/2
milliamp. In case a measurement is outside of the limits specified,
there is a possibility of a shock hazard, and the equipment should
be repaired and rechecked before it is returned to the customer.
2.4. ELECTROSTATICALLY SENSITIVE (ES) DEVICES
Some semiconductor (solid state) devicescan be damaged easily by static electricity. Such
componentscommonly are called Electrostatically Sensitive (ES) Devices. Examplesof typical ES
devicesare integrated circuitsand some field-effect transistorsand semiconductor “chip ”
components. The following techniquesshould be used to help reduce the incidence of
component damage caused by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic
charge on your body by touching a known earth ground.
Alternatively, obtain and wear a commercially available
discharging wrist strap device, which should be removed for
potential shock reasons prior to applying power to the unit under
test.
2. After removing an electrical assembly equipped with ES devices,
place the assembly on a conductive surface such as alminum foil,
to prevent electrostatic charge buildup or exposure of the
assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES
devices.
4. Use only an anti-static solder removal device classified as “anti-
static ”can generate electrical charges sufficient to damage ES
devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it. (most
replacement ES devices are packaged with leads electrically
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shorted together by conductive foam, alminum foil or comparable
conductive material).
7. Immediately before removing the protective material from the
leads of a replacement ES device, touch the protective material to
the chassis or circuit assembly into which the device will be
installed. CAUTION:Be sure no power is applied to the chassis or
circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement
ES devices. (Otherwise hamless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a
carpeted floor can generate static electricity sufficient to damage
an ES device).
2.5. X-RADIATION
WARNING
1. The potential source of X-Radiation in EVF sets is the High Voltage
section and the picture tube.
2. When using a picture tube test jig for service, ensure that jig is
capable of handling 10kV without causing X-Radiation.
Note:
It is important to use an accurate periodically calibrated high
voltage meter.
3. Measure the High Voltage. The meter (electric type) reading
should indicate 2.5kV, ±0.15kV. If the meter indication is out of
tolerance, immediate service and correction is required to prevent
the possibility of premature component failure. To prevent an X-
Radiation possibility, it is essential to use the specified picture
tube.
3. OPERATING INSTRUCTIONS
3.1. AJ-D950P/AJ-PD950P
3.2. AJ-D950E
3.3. AJ-YA951E
4. SERVICE INFORMATION
4.1. How to reset the HOUR METER
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1. Turns power OFF and set the DIP SW 501-1 to ON position on the
SYSCON (F2) P.C.B.
2. Turns power ON and press DIAG button and then press SEARCH
button. Confirm the HOUR METER information is displayed on the
monitor as above figure.
3. Set the cursor to mark "r" position by rotating the jog JOG DIAL
then press the RESET button.
4. The message is displayed as below. (The following message is a
example when "DRUM RUN r ".)
5. Set the DIP SW 501-1 to OFF position on the SYSCON (F2) P.C.B.
Note:
Accumulated Time can not be reset.
4.2. How to confirm the Soft Version
1. Turns power ON.
2. Press the EJECT button.
3. When press the PLAY and STOP button simultaneously, the soft
version is displayed on the front panel.
4. By repeating step 3, the display of version is changed as follows.
5. Maintenance &Mechanical Adjustment
5.1. Maintenance Parts Chart
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Name Part No. Hoursof Use (unit hours)
2,000 4,000 6,000 8,000 10,000 12,000
Tape Path
Cleaning —"C" Clean the Tape Path at each 500 hours
1Cylinder Unit VEG1457 RRRRRr
2Pinch Arm Unit VXL2835 R*1R*1R*1R*1R*1r
3Cleaning Arm
Unit VXL2748 RRRRRr
4S Reel Motor A
Unit VEM0635 R R r
5T Reel Motor A
Unit VEM0636 R R r
6Thrust Screw
Unit VXQ0556 R R r
7S Loading Arm
Unit VXL2812 Rr
8T1 Boat Unit AVXA6108 Rr
9S Post Base A
Unit VXA6052 Rr
10 Tension Arm S
Unit VXL2832 Rr
11 Cassette
Compartment VXA6070 r
12 Mech. Chassis
Unit VXY1318Z1 R
13 Fan Motor VRF0193 Replace the Fan Motor at each 10,000 hours
Operation Time
Note:
Hoursof Use are based on the head rotation hours.
Hoursof Use are recommendation. It may depend on temperature, humidity or dust.
Hoursof Use are listed asthe reference of maintenance. They do not mean guaranteed hours.
"R":These partsare replacement parts.
"r":These partsare included in Mech. ChassisUnit. Replacing Mech. ChassisUnit is
recommended.
*1. The lubrication isnecessary when replacing the Pinch Arm Unit. (Use Molytone Grease.)
"C":Thismark meanscleaning isnecessary. Detail cleaning proceduresare written in Service
Manual.
The following partsare included in the mechanism chassis. Therefore usual replacement isnot
necessary if the mechanism chassisisreplaced.
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No. Name Part No. 2000H 4000H 6000H 12000H
14 A/C Head VED0419 r
15 Loading Motor (1) A Unit VEM0645 r
16 Reel Drive Motor Unit VEM0585 r
17 Mode Switch Unit VES0814 r
18 Pinch Solenoid VSJ0227 r
19 S Brake Solenoid VSJ0216 r
20 T Brake Solenoid VSJ0216 r
21 Thinner Tape Detection Switch VXA6119 r
22 Cleaner Solenoid VSJ0226 r
23 Main Cam Gear VDG1168 r
24 Brake Solenoid (M Stopper)
VSJ0216 r
25 Slot In Motor VXA5597 r
5.2. Jigs and Tools List
No. Item Part No. Name Remark
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1Jigs VFK1145 Back Tension Meter (T2-M30-P)
2VFK1149 Post Driver
3VFK71 Dial Torque Gauge (150 g)
4VFK1191 Dial Torque Gauge (45g)
5VFK1152 Dial Torque Gauge Adapter
6VFK0357 Eccentric Screwdriver (1.5)
7VFK1154 Post Height Fixture
8VFK1153 Mech Neutral Plate(Post)
9VFK1369 Tape Sensor Adjustment Cassette (L)
10 VFK1155 REV Position Tool (Gold or White color)
11 VFK1156 PLAY Position Tool (Black color)
12 VFK1208 Neutral Position tool (Black, with hole)
13 VFK1150 Nut Driver (5.5mm)
14 VFK1151 Nut Driver (2.5mm)
15 VFK1188 Dial Tension Gauge (30g)
16 VFK0948 Check Light
17 VFK0749 Froiral Grease(White) (for plastic part)
18 M0R265 Morlytone Grease(Black) (for metal part)
19 VFK1146 PhilipsDriver (00-75)
20 VFK1147 PhilipsDriver (0-100)
21 VFK1148 Hex. Wrench (1.5)
22 VFK1178 Hex. Wrench (0.89)
23 VFK1179 Hex. Wrench (0.71)
24 VFK1190 Hex. Wrench
25 VFK1209 Torque Driver(0.4-3Kg)
26 VFK0912 Post AxisDriver(1.5mm)
27 VFK1300 A/D Board (DAQ-12 Quatech)
28 VFM3580KM Alignment Tape (No.1)
29 VFM3581KM Alignment Tape (No.2)
30 VFM3582KM Alignment Tape (No.3)
31 AJ-CL12MP Cleaning Tape SALES
32 VFK1420 LISTA Software NEW!
33 VFK1186 LISTA Cable
34 VFK1192 Extension Board
35 VFK1383 Extension Board (2) NEW!
F4,
36 VFK1193 Extension Board (H)
37 Alignment Tape (50M confirmation) NEW!
38 VFK0369 Tweezers
39 VFK0371 Radio Prier
40 VFK0372 Cutter Prier
41 VFK0338 Trimmer Adjustment Driver
42 VFK0337 PhilipsDriver
43 VFK0906 Grease
44
45
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45
46
47
48
49
50
5.3. Disassembly Method
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5.3.1. Removal of Top Panel
Loosen 2 screwsand remove the top panel.
5.3.2. Removal of Bottom Panel
1. Loosen the screw 1.
2. Remove the 4 screws numbered 2.
3. Slide the bottom panel and remove it.
5.3.3. Removal of Upper Front Panel
1. Remove the 4 screws at right and left, then draw the upper front
panel.
5.3.4. Removal of Front Panel
1. Remove the 4 screws at left and right. Then draw it and remove
the connector and remove the Front Panel.
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5.3.5. Removal of Front Loading Unit
1. Remove the connectors at front loading motor and interconnection
board. Then rotate the emergency eject gear (red)
counterclockwise until the screw which is used to fix the front
loading u can be seen.
2. Remove the 4 screws of the loading unit as shown below.
5.3.6. Removal of Power Supply Unit
1. Remove 5 connectors with the Power Supply unit on the VTR
bottom side.
2. Remove 2 screws with the Power Supply unit on the VTR bottom
side.
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3. Remove 1 screw with the Power Supply unit on the VTR top side.
4. Remove 2 screws at VTR Rear panel which are used to fix the
Power supply unit.
5.3.7. Removal of Mechanism Unit
1. Remove the front loading unit.
2. Remove the connector P1 and P2 which are connected to mech
interface at VTR bottom.
Remove the A/C Head cable from the intermediate point, and remove the P5003 and P5002
which are connected between the cylinder unit and Head Buffer board. Then remove the 3
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screwsand remove the mechanism unit.
5.3.8. Removal of Fan Motor
1. Remove the Rear Jack by removing 7 screws.
2. Remove 2 screws and Power 2 connector P14 then remove the fan
motor.
3. Remove 2 screws and mother board connector P32, then remove
fan motor.
5.4. Manual Tape Eject
When a tape can not be ejected, because of Power failure or mechanical tape damage, remove
the tape manually.
1. Turns power off and remove the top panel and front upper and
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front bottom panel.
2. Release the Reel brake by pressing the iron axis of the T Reel
Brake Solenoid. This is done by a thin stick from the VTR front.
3. Rotate the red plastic screw by a Phillips -head screwdriver to
Counterclockwise (CCW )keep pushing the screw. It needs to
rotate about 30 times rotation until starting to move.
4. When the post is unloaded, the tape loosens, so take-up reel must
be wound the tape to protect tape loosen. The tape wind method
is ;inserting a wood stick (non magnetized) between the cassette
and mechanism chassis from the front and rotate the T Reel to the
tape wind direction.
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5. Repeat item 3 and 4 until the tape in wound completely inside of
the cassette.
6. When the tape is completely inside of the cassette, rotate the
worm gear of the cassette down motor and remove the cassette.
Take care so that the cassette cover does not bite the tape when
the cover is closed.
5.5. Cleaning Procedures
Note:
Turnspower off during cleaning.
Make sure the power isOFF before cleaning. Use ethanol (more than 99%purity) ascleaning
liquid.
5.5.1. Cleaning of Head Chips:(Daily)
Clean headsby applying even pressure and rotating cylinder a few times. Never wipe in up and
down motion. Never touch a cylinder by naked hand. First wipe with a cloth soaked by cleaning
liquid. Then wipe with dry cloth.
5.5.2. Cleaning of Drum Lead:(Weekly)
Be careful not to touch a head chip. Clean the drum lead with a pick.
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5.5.3. Cleaning of A/C Head:(Weekly)
Wipe the A/C head with a cloth soaked by cleaning liquid. Wipe again with a dry cloth.
5.5.4. Cleaning of Pinch Roller and Capstan:(Weekly)
Wipe the Pinch Roller and Capstan with a cloth soaked by cleaning liquid.
5.5.5. Cleaning of Post:(Weekly)
Wind a cloth on a pick. Wipe each post dry with that pick .Wipe again with a dry cloth. For
metal postswipe with cleaning liquid. Then wipe dry again.
Note:
Use the clean cloth for cleaning purpose. Do not use any dirty cloth.
5.6. Mechanism Adjustment
5.6.1. Name of tape transportation
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5.6.2. Pinch Solenoid Position Adjustment
Specification T =0.3mm
Test Point Space at T portion
Adjustment A, B
Mode EJECT (Power Off)
Tool VFK0357 (Eccentric Driver)
1. Turns power off.
2. Close the pinch roller to the capstan shaft.
3. Press the pinch solenoid by your hand and touch the pinch roller
with the capstan shaft.
4. Loosen the 2 screw A and adjust B portion so that the Gap T is in
the specification by VFK0357.
5. Tighten the 2 screw A after adjustment.
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5.6.3. Main Brake Torque Confirmation
Specification A:more than 80g B:more than 15g
Test Point S Reel, T Reel
Mode EJECT (Power OFF)
Tool VFK71(150g),VFK1191(45g),VFK1152
1. Remove the cassette compartment.
2. Attach the Adaptor (VKK1152) with the torque meter.
3. Attach the torque meter with the S Reel table and rotate it to A
direction (CW).
4. Confirm the reel torque is in the specification when the brake is
released and the reel starts rotation.
5. Confirm T Reel torque in the same way with S Reel torque.
6. Remove the Adaptor (VKK1152) and attach the adaptor with the
torque meter (VFK1191).
7. Attach the torque meter with the S Reel table and rotate it to B
direction (CCW).
8. Confirm the reel torque is in the specification when the brake is
released and the reel starts rotation.
9. Confirm T Reel torque in the same way with S Reel torque.
5.6.4. Post Height Pre-Adjustment
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Mode EJECT (Power OFF)
Tool VFK1153, VFK1154 (flange tool)
1. Turns power off and remove the cassette compartment and set
mechanism plate (VFK153).
2. Place the flange tool (VFK1154) as shown in the figure and adjust
the post height.
3. Adjust the S1 and T1 post height by VFK1149 and adjust T3 and T4
by VFK1151.
Name Limit Post Driver
S5 Post Note 1VFK1149
S4 Post Note 1VFK1149
T3 Post Lower Limit VFK1151(2.5mm Nut Box)
T4 Post Lower Limit VFK1151 (2.5mm Nut Box)
Note:
Rotate CCW one turn from the lower limit.
5.6.5. Tension Arm Adjustment Procedures
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5.6.6. Tension Arm Offset Voltage Adjustment
Board SERVO
Specification 2.5+/-0.05V
Test Point TP201(SERVO:F1)
Adjustment VR1(Mech. IF)
Mode EJECT
M. EQ. Digital Volt Meter
1. Set the VTR in EJECT mode and confirm the voltage at TP201 is in
the specification.
2. If it is not, adjust VR1 on the Mech. I/F Board so that the voltage is
in the specification.
5.6.7. Neutral Position Adjustment
Board SERVO
Specification 2.5+/-0.1V
Test Point TP201(SERVO:F1)
Adjustment Tension Regulator Board Base Position
Mode STOP
M. EQ. Digital Volt Meter
VFK1208(Black, with a hole)
1. Remove 4 screws on the Front Loading Unit and Remove it, then
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