JVC VF-P116U, VF-P116E, VF-P116UA, VF-P116WE, VF-P116W Service Manual
...
SERVICE MANUAL
VIEWFINDER
VF-P116U(A
VF-P116E(A
)
)
VF-P116 is modified from following serial number to use the case and the PCBs
commonly with the VF-P116W. VF-P116 (A) is indicated on the serial no. plate.
VF-P116U xxxx0781 and after
VF-P116E xxxx2051 and after
This service manual is exclusively for VF-P116 (A) only.
100% recycled paper
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 60109B
December 2000
TABLE OF CONTENTS
Section Title Page
INSTRUCTIONS
1. DISASSEMBLY ................................................................................................................................................... 1
2. ELECTRICAL ADJUSTMENT .............................................................................................................................. 3
3. CHART AND DIAGRAM ..................................................................................................................................... 6
4. EXPLODED VIEW AND PARTS LIST .................................................................................................................. 8
5. ELECTRICAL PARTS LIST ................................................................................................................................ 10
6. PACKING .......................................................................................................................................................... 12
COMPARISON WITH PREVIOUS MODEL
DIFFERENCE OF EXTERNAL VIEW VF-P116U/E VF-P116U(A)/E(A) DESCRIPTION
TALLY LED 4 LEDs 2 LEDs with white cover
DIFFERENCE PARTS VF-P116U/E VF-P116U(A)/E(A) DESCRIPTION
PACKING
Instructions
SC96773 SC96985
ASSEMBLY <M1>
TALLY BRACKET (Symbol 14)
UPPER CASE (Symbol 15)
BOTTOM CASE (Symbol 16)
TUBE (Symbol 53)
TALLY COVER (Symbol 54)
ELECTRICAL PARTS
VF MAIN board assembly
VR board assembly
TALLY board assembly
SC44730-001
SC20430-011
SC20431-003
–
–
SCK2481-01-00A
SCK2481-02-00A
SCK2481-03-00A
SC46364-001
SC20430-012
SC20431-004
SC45909-070
SC32217-001
SCK2554-01-00A
SCK2554-02-00A
SCK2554-03-00A
Same as VF-P116W
Same as VF-P116W
Same as VF-P116W
Same as VF-P116W
Same as VF-P116W
SECTION 1
´
Ï
5
5
DISASSEMBLY
1.1 REMOVAL OF COVER
1. Remove three screws
2. Remove two screws
2
and detach the slide base Å.
ˆ
1
Fig. 1-1
and detach the VF base ı.
ı
Å
1.2 REMOVAL OF CRT
1. Open the bottom cover referring to “1.1 REMOVAL OF
COVER”.
2. Remove two screws
out the CRT together with the CRT holders
ror case
Î
.
from on the mirror case Î and pull
4
from the mir-
´
Î
4
´
4
Fig. 1-4
3. Remove one screw
opened in the direction of the arrow.
2
Fig. 1-2
, and the bottom case Ç can be
3
Ç
3. Remove the ring
4. Remove two screws
open the CRT holder
Ï
in the manner to open it.
Fig. 1-5
(one in the opposite side) and then
5
. (See Fig.1-5)
´
Fig. 1-3
3
1
5. Remove the CRT socket ˝.
Ó
˝
PIN
Fig. 1-6
6. Shortcircuit the anode of the CRT to the chassis or the FBT
cover for discharge, and then disconnect the anode plug
Note: The anodic electrode is located inside the rubber
cover of the anode plug
careful not to get an electric shock.
7. Loosen one screw
and remove the soldering
Pull the CRT out of the deflection yoke in the direction of the
arrow (f).
fixing the CRT to the deflection yoke
6
ˆ
. When discharging, be
Ó
.
Ó
6
ˆ
Fig. 1-7
Fig. 1-9
.
1.3 REMOVAL OF MAIN BOARD
1. Open the bottom cover referring to “1.1 REMOVAL OF
COVER”.
2. Remove four screws
tached.
and the MAIN board can be de-
7
7
7
Fig. 1-10
When reassembling the CRT to the set, put the spring
onto the pin on the bottom cover without fail.
Ô
Fig. 1-8
2
Ô
SECTION 2
ELECTRICAL ADJUSTMENT
2.1 ARTICLES REQUIRED FOR ADJUSTMENT
2.1.1 Measuring instruments necessary for adjustment
Measuring instrument
Oscilloscope
Capable of measuring 10MHz or higher
Requirement
bands, and calibrated
Frequency counter
Readable in 8 or more digits.
Constancy of 0.1ppm/1 × 10
-7
or more
at 0°C to 40°C
Digital voltmeter
Input impedance of 10 M or more,
and calibrated
2.2 LOCATION OF ADJUSTMENT PARTS
VR board
V. HEIGHT
VR501
V. HEIGHT2
RY501 VR502
CN501
PEAKING
VR102
2.1.2 Other necessities for adjustment
Camara and lens
Resolution chart or registration chart
• Adjustment by 4:3 mode
CN503 CN504 GND
CN101
CONTRAST
VR1
TP3
TP2
CN102
BRIGHT
VR8
MAIN board
CN401
CN2
H HOLD
V HOLD
VR3
VR5
H. LIN
VIDEO LEVEL
VR101
CN7
CN8CN3
SUB BRIGHT FOUCUS
CN4
CN5
CN1
TP1
CN6
VR7
VR6
3
No. Item instruments &
Measuring
Input signals
2.3 CHECK OF SUPPLY VOLTAGE
Measuring point (*)
Adjustment parts (-)
Adjustment level (+)
Adjustment procedure
1 12V supply
• Digital voltmeter 1) Check to see if the specified voltage is meas-
voltage check
2.4 ADJUSTMENT OF H.HOLD
1 H. HOLD
adjustment
• Frequency
counter
2.5 ADJUSTMENT OF V.HOLD
1 V.HOLD
adjustment
• Oscilloscope
(V-rate,10:1)
* Between pin 5 of CN1 and
GND [MAIN]
+ +12V ± 0.5V
* Between collector of Q10
[MAIN] and TP3(GND)[VR]
- H. HOLD(VR3)[MAIN]
+ 14.7 ± 0.3kHz
* TP2 and TP3 (GND)[VR]
- V. HOLD(VR5)[MAIN]
+ 17.5 ± 0.5ms(U.Ver)
+ 21 ± 0.5ms(E.Ver)
ured at the measuring point.
1) Adjust VR3 to obtain the specified frequency
at the measuring point.
1) Adjust VR5 to obtain the specified level at the
measuring point.
17.5 ± 0.5ms(U.Ver)
21 ± 0.5ms(E.Ver)
2.6 ADJUSTMENT OF VIDEO LEVEL
1 Video level
adjustment
• Gray scale chart
• Oscilloscope
(H-rate,10:1)
* TP1[MAIN] and TP3
(GND)[VR]
- VIDEO LEVEL(VR101)
[MAIN]
+ +10 ± 0.5V DC
1) Shoot the gray(scale) chart by the camera.
2) Observing the waveform on oscilloscope, adjust VR101 to obtain the specified level at the
measuring point.
+10 ± 0.5V DC
0V DC
4
Measuring
Measuring point (*)
No. Item instruments &
Adjustment parts (-)
Adjustment procedure
Input signals
Adjustment level (+)
Measuring
Measuring point (*)
No. Item instruments &
Adjustment parts (-)
Adjustment procedure
Input signals
Adjustment level (+)
1 V. amplitude
adjustment
•Resolution chart or
Registration chart
1) Shoot the resolution chart or registration chart
so as to take the central circle of the chart as
large as possible.
2) Adjust the V. HIGHT control so that the central
circle of the chart shows a perfect circle.
3) If the central circle looks elliptical, fine adjust
the H.LIN control(L4) to correct it.
2.9 ADJUSTMENT OF V.AMPLITUDE (for 4:3)
1 Centering
adjustment
1) Set the BRIGHT and CONTRAST controls on
the front panel to the mechanical center position respectively.
2.7 ADJUSTMENT OF CENTERING
- V. HEIGHT(VR501)[VR]- BRIGHT(VR8)[VR]
CONTRAST(VR1)[VR1]
1) Reduce the raster part by tuning the H.LIN and
V. HEIGHT controls.
- H. LIN(L4)[MAIN]
V. HEIGHT(VR501)[VR]
1) Adjust the DY centering magnet of the deflection yoke so as to position the raster part in
the center of the CRT.
- DY centering magnet
[Deflection yoke]
1 H. linearity
adjustment
•Resolution chart of
Registration chart
1) Shoot the resolution chart or registration chart
so as to take the central circle of the chart as
large as possible.
2) Adjust the H.LIN control so that the linearity of
the picture is aligned in both the sides.
2.8 ADJUSTMENT OF H.LINEARITY
- H. LIN(L4)[MAIN]
1 Sub-brightness
adjustment
1) Set BRIGHT and PEAKING controls on the front
panel to the minimum position, while set the
CONTRAST control to the maximum position.
2) Adjust the SUB BRIGHT control so that the
raster is seen dimly.
2.10 ADJUSTMENT OF SUB-BRIGHTNESS
- SUB BRIHT(VR7)[MAIN]
1 Focus
adjustment
1) Shoot an object by the camera.
2) Set the CONTRAST and PEAKING controls on
the front panel to the mechanical center position respectively.
3) Turn up and down the brightness with the
BRIGHT control on the front panel while adjusting the FOCUS control to obtain the best
focus.
2.11 ADJUSTMENT OF FOCUS
- FOCUS(VR6)[MAIN]
Raster part
CRT screen
Protecive glass of CRT
Fluorescent screen of CRT
55
VF-P116U(A)/VF-P116E(A)
VICTOR COMPANY OF JAPAN, LIMITED
No. 60109B
Printed in Japan
(S), C.Y
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