Sony HDVF-EL70 User manual

HD ELECTRONIC VIEWFINDER
HDVF-EL70
HDVF-EL75
OUTDOOR HOOD
VFH-790
SERVICE MANUAL
1st Edition
Serial No. 120001 and Higher
Conditions of Use:
(1) Please use this information only for the purpose of repair and recycling of Sony products. Using this information for any purpose other
than the purpose described foregoing is forbidden.
(2) Do not copy, replicate, reproduce, alter, translate, transmit, sell, lease, or distribute this information in whole or in part without the prior
written permission of the author.
Revision of Information:
This information may be changed or updated at any time without any prior notice. Please confirm that this information is up-to-date before
using it.

HDVF-EL70/HDVF-EL75
!警告
このマニュアルは，サービス専用です。
お客様が，このマニュアルに記載された設置や保守，点検，修理などを行うと感電や火災，
人身事故につながることがあります。
危険をさけるため，サービストレーニングを受けた技術者のみご使用ください。
! WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
! WARNUNG
Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben
Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung
dazu besitzen.
! AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.
Pour toute réparation faire appel à une personne compétente uniquement.

1
HDVF-EL70/HDVF-EL75
Table of Contents
1. Service Overview
1-1. Board Location ................................................................ 1-1
1-2. Connector Input/Output Signals ...................................... 1-1
1-2-1. Conforming Cable..................................................1-1
1-2-2. External Connectors ...............................................1-2
1-3. Onboard Switches ........................................................... 1-4
1-4. Circuit Description .......................................................... 1-5
1-5. Removing/Installing Boards ............................................ 1-7
1-5-1. LE-415 Board ........................................................ 1-7
1-5-2. PR-337 Board ........................................................ 1-8
1-5-3. SW-1730 Board...................................................... 1-9
1-5-4. VR-366 Board ...................................................... 1-10
1-5-5. SW-1731 Board/SW-1732 Board......................... 1-11
1-5-6. LE-416 Board/LE-417 Board .............................. 1-11
1-6. Replacing the DC Fan ...................................................1-12
1-7. Replacing the OLED Panel ........................................... 1-13
1-8. Replacing VF Holder Unit Components ....................... 1-16
1-8-1. Harness (VF Connection 1) (HDVF-EL70)......... 1-16
1-8-2. Harness (VF Connection 2) (HDVF-EL75)......... 1-22
1-8-3. Arm (L) Sub Assembly ........................................ 1-23
1-8-4. Arm (R) Sub Assembly ........................................ 1-24
1-8-5. Adjusting the Arm Lift Angle .............................. 1-26
1-9. Notes on Replacing Parts .............................................. 1-27
1-9-1. Greasing ...............................................................1-27
1-9-2. Tilt Lock Shoe...................................................... 1-28
1-9-3. Checking Friction in the Panning Direction
(HDVF-EL75) ...................................................... 1-29
1-10. List of Tool, Required Equipment, and
Adjustment Equipment .................................................. 1-30
1-11. Firmware and PLD Upgrading ...................................... 1-31
1-11-1. ROM and Software Versions Check .................... 1-31
1-11-2. Writing and Rewriting Software Data ................. 1-31
1-11-3. Writing and Rewriting PLD Internal Data ........... 1-31
1-12. Replacing Fuses.............................................................1-32
1-13. Lead-free Solder ............................................................ 1-32
2. Diagnostics
2-1. STATUS Indicator ........................................................... 2-1
2-2. Device Check .................................................................. 2-1
2-3. Internal Test Signal .......................................................... 2-2
3. Setting Menu
3-1. Setting Menu ................................................................... 3-1
3-2. TOP Menu ....................................................................... 3-3
3-3. OPERATION Menu ........................................................3-3
3-4. SERVICE Menu .............................................................. 3-4
4. Electrical Alignment
4-1. Preparation ...................................................................... 4-1
4-1-1. Setting of Switches, Volume Controls, and
Menus ....................................................................4-1
4-1-2. Required Equipment .............................................. 4-2
4-1-3. Connection ............................................................. 4-2
4-1-4. Setting Format .......................................................4-2
4-2. Color Temperature Adjustment ....................................... 4-3
5. Spare Parts
5-1. Notes on Repair Parts ...................................................... 5-1
5-2. Exploded Views ............................................................... 5-2
5-3. Supplied Accessories ..................................................... 5-11
6. Diagrams
Overall ........................................................................................6-1
Frame Wiring .............................................................................6-3
Revision History

1-1
HDVF-EL70/HDVF-EL75
Section 1
Service Overview
1-1. Board Location
LE-415
PR-337
SW-1732
SW-1730
LE-417
VR-366
SW-1731
LE-416
1-2. Connector Input/Output Signals
1-2-1. Conforming Cable
When connecting the HDVF-EL75 to a camera at the time of installation or service, use the supplied VF
cable.
Sony part No.: 1-838-608-11
VF side CAMERA side

1-2 HDVF-EL70/HDVF-EL75
1-2-2. External Connectors
HDVF-EL75
The following lists input signals and output signals of the
VF cable.
CAMERA (20P, MALE)
(External view)
No. Signal I/O Specifications
1 SDA IN/OUT TTL level
2 Y TALLY IN ON: +5 V
OFF: GND
3 POWER OFF IN ON: OPEN
OFF: GND
4 SCK IN TTL level
5 COLOR/MONO OUT MONO: GND
COLOR: OPEN
6NC _No connection
7NC _No connection
8 G TALLY IN ON: +5 V
OFF: GND
9 PEAKING CTL OUT 0 V to +5 V
0 V: PEAKING OFF
+5 V: PEAKING MAX
10 NC _No connection
11 NC _No connection
12 Y VIDEO (X) IN 1.0 Vp-p, Zi = 75 Z
13 VIDEO GND _GND for VIDEO
14 Pb VIDEO (X) IN 0.7 Vp-p, Zi = 75 Z
15 Pr VIDEO (X) IN 0.7 Vp-p, Zi = 75 Z
16 REC (L) IN ON: +5 V
OFF: GND
17 R TALLY IN ON: +5 V
OFF: GND
18 NC _No connection
19 UNREG GND _GND for UNREG
20 UNREG IN +10.5 V to 17 V
VF (20P, MALE)
External view








No. Signal I/O Specifications
1 SDA IN/OUT TTL level
2 Y TALLY IN ON: +5 V
OFF: GND
3 POWER OFF IN ON: OPEN
OFF: GND
4 SCK IN TTL level
5 COLOR/MONO OUT MONO: GND
COLOR: OPEN
6NC _No connection
7 UNREG IN +10.5 V to 17 V
8 G TALLY IN ON: +5 V
OFF: GND
9 PEAKING CTL OUT 0 V to +5 V
0 V: PEAKING OFF
+5 V: PEAKING MAX
10 NC _No connection
11 UNREG GND _GND for UNREG
12 Y VIDEO (X) IN 1.0 Vp-p, Zi = 75 Z
13 VIDEO GND _GND for VIDEO
14 Pb VIDEO (X) IN 0.7 Vp-p, Zi = 75 Z
15 Pr VIDEO (X) IN 0.7 Vp-p, Zi = 75 Z
16 REC (L) IN ON: +5 V
OFF: GND
17 R TALLY IN ON: +5 V
OFF: GND
18 NC _No connection
19 UNREG GND _GND for UNREG
20 UNREG IN +10.5 V to 17 V

1-3
HDVF-EL70/HDVF-EL75
HDVF-EL70
D-SUB (25P, MALE)
(External view)
311
5241
No. Signal I/O Specifications
1 Y VIDEO (X) IN 1.0 Vp-p, Zi = 75 Z
2 Pr VIDEO GND _GND for Pr VIDEO
3 Pr VIDEO (X) IN 0.7 Vp-p, Zi = 75 Z
4 Pb VIDEO GND _GND for Pb VIDEO
5 Pb VIDEO (X) IN 0.7 Vp-p, Zi = 75 Z
6 PEAKING CTL OUT ON: +5 V
OFF: GND
7 UNREG IN +10.5 V to 17 V
8 UNREG IN +10.5 V to 17 V
9 UP TALLY IN ON: +5 V
OFF: GND
10 SDA IN/OUT TTL level
11 R TALLY IN ON: +5 V
OFF: GND
12 NC _No connection
13 NC _No connection
14 Y VIDEO GND _GND for Y VIDEO
15 SCK IN TTL level
16 NC _No connection
17 CHASSIS GND _GND for CHASSIS
18 G TALLY IN ON: +5 V
OFF: GND
19 UNREG GND _GND for UNREG
20 UNREG GND _GND for UNREG
21 COLOR/MONO OUT COLOR: OPEN
MONO: GND
22 NC _No connection
23 Y TALLY IN ON: +5 V
OFF: GND
24 NC _No connection
25 NC _No connection

1-4 HDVF-EL70/HDVF-EL75
1-3. Onboard Switches
PR-337 board
3
AB C D E
2
1
1818
ON ON
S1201 S601
(Factory settings)
PR-337 board (Side A)
Ref. No. Name Bit Description Factory setting
S601 TEST SIGNAL 1, 2 Selection of output signal (type) to TP501/PR-337
(For details, refer to “2-3. Internal Test Signal”.)
All OFF
TEST POINT 3 to 5 Selection of output signal (location) to TP501/PR-337
(For details, refer to “2-3. Internal Test Signal”.)
All OFF
_6 to 8 Not used All OFF
S1201 MODEL 1 Selection of model
OFF: HDVF-EL75
ON: HDVF-EL70
Depending on model*1
IND SEL 2 Selection of function of upper-right indicator
OFF: BATT IND (HDVF-EL75)
ON: SECRET IND (HDVF-EL70)
Depending on model*1
_3 to 6 Not used All OFF
VERSION UP 7 OFF: Normal OFF
_8 Not used OFF
*1: These bits are set to OFF when the board was purchased. Change the setting according to the model that contains this board.

1-5
HDVF-EL70/HDVF-EL75
1-4. Circuit Description
PR-337 Board
The PR-337 board consists of a power supply circuit, video amplifier circuit, low-pass filter (LPF), A/D
converter circuit, video signal processing circuit, clock generator circuit, tally control circuit, and micro-
processor.
(1) Video signal processing
The analog HD Y/Pb/Pr signal input from CN1 is passed through a video amplifier (IC201, IC202, and
IC203) and LPF (IC204). After that, the signal is converted into a 10-bit digital signal of 74 Mbps using
an A/D converter (IC301) and output to FPGA (IC401).
FPGA discriminates the format of an input signal using the H/V sync signal generated by a sync separator
IC (IC206), and outputs the H/V sync signal (by adding PLL to the sync signal) to the A/D converter.
FPGA also distributes the input HD Y/Pb/Pr digital signal input from the A/D converter to two lines. The
distributed digital signal is peaked respectively and output to an image processing IC (IC801).
The image processing IC converts image size and IP and also converts the input HD Y/Pb/Pr digital signal
into a Quarter HD RGB digital signal. It also sets brightness and contrast and synthesizes two screens.
The qHD RGB digital signal output from the image processing IC is input into FPGA again. FPGA knee-
corrects an input signal, superimposes an OSD signal, and outputs it to an LVDS transmitter (IC1101).
The LVDS transmitter converts each 10-bit digital signal of RGB and sync signal into an LVDS signal
and outputs it to CN8.
(2) Internal test signal generation
The FPGA (IC401) has internal test signal generator circuits (two in the first-half part and one in the
second-half part) and performs switching with a main-line signal.
(3) Control system
CPU (IC1201) mutually communicates with FPGA, and image processing IC by serial communication. It
also sets the parameters of the LPF, A/D converter, and clock generator IC (IC481) by I2C communica-
tion. Moreover, the CPU controls a panel module.
The brightness, contrast, and peaking volume level signal lines are connected to the A/D input port of the
CPU so as to control them.
The D/A output port of the CPU controls the luminance of the up-tally lamp.
The FPGA (IC401) controls the luminance of a tally and indicator using the PWM control and performs
I2C communication with the connected camera.
(4) EEPROM
The setting data and the current conduction duration of this unit are recorded in EEPROM (IC1302) on
the PR-337 board. The model information such as the serial number of this unit is recorded in EEPROM
(IC1305).
(5) Power supply circuit
The power supply circuit of the unit operates in the proper input voltage range and has 14 outputs includ-
ing one circuit directly connected to the UNREG power supply.
. Inrush current/reverse connection/backflow/transient burst prevention circuit
The circuit consisting of an FET (Q1402) immediately after UNREG_IN, a transistor (Q1401), and
peripheral parts prevents inrush current, reverse connection, backflow, and transient burst.
Inrush current is reduced by gradually activating the gate by the current flowing through the Q1402
body diode.

1-6 HDVF-EL70/HDVF-EL75
If signals are connected reversely, Q1402 is not activated and no current flows, preventing damage to
the unit.
If the UNREG_IN voltage drops about 1 V lower than the lower-limit operating voltage of this power
supply, the base of Q1401 turns low and Q1402 is turned off, preventing backflow.
To prevent transient burst and connection to a high-voltage battery outside the proper input voltage
range, the zener diode (TVS diode) D1402 prevents an overvoltage of up to about +24 V to be trans-
ferred to the subsequent circuit. If a voltage above +24 is input, the fuse F1401 is blown due to short-
circuit of the zener diode, activating the protection circuit.
. Input voltage monitoring circuit
The input voltage monitoring circuit in IC1403 supplies power to the DC/DC converters (IC1501,
IC1551, IC1601, IC1751, and IC1801) when the input voltage is in the proper range.
Power operates within an input voltage range of +9.5 V to +19.0 V when the rated input voltage range
of the unit is +10.5 V to +17.0 V. Once the power operates, the operating range extends to an input
voltage range of +8.5 V to +19.0 V. When the input voltage drops below +8.5 V or rises above +19.0 V,
Q1404 is turned off and the supply of UNREG_IN power voltage is shut off. The power voltage is not
supplied to UNREG_SW until it enters the proper voltage range.
. Power control circuit
A step-down switching regulator consisting of IC1501, IC1551, IC1601, IC1751, and IC1801 generates
voltages +5.0V_D0, +8.5V_P, +1.8V_D, +5.0V_A, and FAN_POWER based on the UNREG_SW
voltage supplied from the external circuit.
The +5.0V_D0 voltage is used for the digital circuit (+5.0V_D) and OLED (+5.0V_P), and is also used
as the first power voltage for the digital circuit. Based on this voltage, voltages +3.3V_D1 (+3.3V_D),
+1.0V_D, and +1.2V_D are generated by the step-down switching regulator (IC1651, IC451, and
IC802).
The +8.5V_P voltage is used for the OLED. The +8.5V_P and +5.0V_P voltages are supplied to the
OLED and are turned on and off by the control from the CPU through IC1452. These voltages are
monitored by IC1451. In the case of an abnormality, an alarm detection signal is sent through IC1452 to
the CPU.
The +1.8V_D digital voltage is used for the FPGA (IC401), Scaler (IC801), and DDR (IC1001,
IC1003). The DDR termination regulator IC1002 generates a VTT bus termination voltage of the DDR
memory.
The +5.0V_A voltage is used for the first-stage of the analog circuit. Based on this voltage, voltages
_5.0V_A, +3.3V_A, and +1.8V_A are generated for other analog circuits.
The _5.0V_A voltage is generated by the charge pump (IC1703) that outputs a negative voltage.
The +3.3V_A voltage is generated by the LDO (IC1702). Based on this voltage, a +1.8V_A voltage is
generated by the LDO (IC1704).
In addition, a +1.8V_AD voltage is generated based on the +3.3V_D1 voltage.
. Fan control
The FAN_POWER voltage for the fan is generated by IC1801. A fan mode is set from three modes (fan
stop, fan low, and fan high) by the control from the CPU through IC1452. In the case of a fan failure, an
alarm detection signal is sent to the CPU. IC1802 monitors the output voltage. When an abnormal
output voltage is detected, an alarm detection signal is sent to the CPU through IC1452. Upon receiving
this alarm signal, the CPU outputs a fan stop signal through IC1452 to deactivate IC1801.
To observe the predetermined startup sequence, each power voltage becomes active in the specified
sequence using the EN pin of each IC and load switches IC452, IC1502, and IC1602.

1-7
HDVF-EL70/HDVF-EL75
1-5. Removing/Installing Boards
1-5-1. LE-415 Board
1. Remove the four hexagon socket head bolts
to detach the rear cover (C) in the arrow
direction.
2. Remove the three screws.
3. Remove the LE-415 board from the connec-
tor on the PR-337 board.
4. Install the removed parts by reversing the
steps of removal.
Hexagon socket head bolts
Rear cover (C)
Hexagon socket head bolts
LE-415 board
B3 )5
Connector
(PR-337 board)

1-8 HDVF-EL70/HDVF-EL75
1-5-2. PR-337 Board
1. Remove the two screws.
2. Remove the LE-415 board from the connec-
tor on the PR-337 board with the bracket.
3. Remove the two screws and open the PR-337
board in the arrow direction.
4. Disconnect the 10 harnesses from the connec-
tors on the PR-337 board, and remove the
PR-337 board.
n
Remove the radiation sheets from IC204, IC301,
and IC801, and then reattach them to the same
ICs on the new PR-337 board.
5. Make settings of the DIP switch (S1201) on
the new PR-337 board. (Refer to Section 1-3.)
6. Install the removed parts by reversing the
steps of removal.
n
After the PR-337 board is replaced, set the serial
number in “S10 SERIAL NO.” of the SERVICE
menu. (Refer to Section 3-4.)
B3 )5
B3 )8
LE-415 board
PR-337 board
Connector
Harnesses
Radiation
sheets
PR-337 board
PR-337
board
IC801
IC301
IC204
HDVF-EL70 HDVF-EL75
18 18
ON ON
S1201 S1201

1-9
HDVF-EL70/HDVF-EL75
1-5-3. SW-1730 Board
1. Remove the PR-337 board. (Refer to Section
1-5-2.)
2. Remove the OLED panel. (Refer to Section
1-7.)
3. Remove the MENU knob.
4. Remove the guard (left).
5. Disconnect the three harnesses from the
connectors on the SW-1730 board.
6. Remove the three screws and remove the
SW-1730 board.
7. Remove the drip-proof rubber and the cush-
ion (PWR SW) from the power switch on the
SW-1730 board.
8. Install the removed parts by reversing the
steps of removal.
MENU knob
SW-1730 board
CN4 CN3
CN2
Guard (left)
Harnesses
Cusion (PWR SW)
Drip-proof rubber
B3 )5

1-10 HDVF-EL70/HDVF-EL75
1-5-4. VR-366 Board
1. Remove the PR-337 board. (Refer to Section
1-5-2.)
2. Remove the OLED panel. (Refer to Section
1-7.)
3. Remove the three volume knobs.
4. Disconnect the harness from the connector on
the VR-366 board.
5. Remove the three screws and remove the
VR-366 board.
6. Install the removed parts by reversing the
steps of removal.
Volume knobs
VR-366 board
Harness
B3 )5

1-11
HDVF-EL70/HDVF-EL75
1-5-5. SW-1731 Board/SW-1732 Board
1. Remove the hexagon socket head bolts to
detach the handle covers.
2. Disconnect the harness from the connector on
the SW-1731 board (or SW-1732 board).
3. Remove the screw to detach the SW-1731
board (or SW-1732 board).
4. Install the removed parts by reversing the
steps of removal.
1-5-6. LE-416 Board/LE-417 Board
1. Remove the two screws and detach the front
mask while releasing the two claws.
Handle cover
Handle cover
Hexagon soket head bolt
Hexagon soket
head bolt
SW-1732 board
Harness
B2 )4
B2 )4
SW-1731 board
Harness
Front mask Claws
B2 )4

1-12 HDVF-EL70/HDVF-EL75
2. Remove the three screws and remove the
LE-416 board (or LE-417 board).
3. Disconnect the harness from the connector on
the LE-416 board (or LE-417 board).
4. Install the removed parts by reversing the
steps of removal.
1-6. Replacing the DC Fan
1. Remove the PR-337 board. (Refer to Section
1-5-2.)
2. Remove the two screws to detach the fan
cover.
3. Remove the DC fan.
4. Stick tape (BT) at the position (shown in the
figure) of the new DC fan.
5. Install the removed parts by reversing steps 1
to 3 of removal.
n
Attach the fan cover carefully so that the fan
harness is not caught by the fan cover and check
that the fan harness passes through the notch of
the chassis.
B2 )4
B2 )4
LE-416 board
Harnesses
LE-417 board
B3 )5
Fan cover
DC fan
Fan harness
Fan harness
Tape (BT)
Notch
10mm
Gap: 0 to 3 mm

1-13
HDVF-EL70/HDVF-EL75
1-7. Replacing the OLED Panel
1. Remove the PR-337 board. (Refer to Section
1-5-2.)
2. Remove the two screws to detach the panel
guard (lower).
3. Remove the two screws and remove the
display unit from the rear cover.
Panel guard (lower)
B3 )5
B3 )8
Rear cover
Display unit

1-14 HDVF-EL70/HDVF-EL75
4. Remove the cushion C.
5. Remove the two nylon rivets to detach the
sheet (right) and the sheet (left).
6. Remove the tape (13X50).
n
When sticking tape (13X50), clamp the two
harnesses as shown in the figure.
Nylon rivet Cushion C
Sheet (left)
Nylon rivet
Sheet (right)
Tape
(13X50)
Harnesses
Harnesses
Tape (13X50)
Tape (13X50)
Harness prohibited area
Min. 10 mmMin. 10 mm
IC100 IC4212

1-15
HDVF-EL70/HDVF-EL75
7. Remove the radiation sheet (A).
8. Remove the three screws (B3 x 8) and three
washers to detach the panel bracket (upper).
9. Remove the two screws (B3 x 5) and detach
the OLED panel paying attention not to catch
the harnesses.
n
Do not hold the area shown in the figure when
detaching the OLED panel.
10. Remove the two screws to detach the panel
bracket (right).
11. Remove the two screws to detach the panel
bracket (left).
12. Disconnect the three harnesses from the
connectors.
13. Install a new OLED panel by reversing the
steps of removal.
Radiation sheet (A)
Washers
Panel bracket (upper)
Note:
Do not hold this part.
OLED panel
B3 x8
B3 x5
B3 x5
Panel bracket (left)
B2 x6
B2 x6
OLED panel
Harnesses Panel bracket (right)

1-16 HDVF-EL70/HDVF-EL75
1-8. Replacing VF Holder Unit Components
n
Tighten screws of the VF holder unit to the following tightening torques.
Setscrew (M3 WP): 0.8 ? 0.12 N.m
M3 : 0.8 ? 0.12 N.m
M2.6 : 0.4 ? 0.10 N.m
M2 : 0.2 ? 0.03 N.m
1-8-1. Harness (VF Connection 1)
(HDVF-EL70)
Removal
1. Remove the PR-337 board. (Refer to Section
1-5-2.)
2. Perform steps 1 to 3 in “Replacing the OLED
Panel” to remove the display unit from the
rear panel. (Refer to Section 1-7.)
3. Remove the knob stopper screw.
4. Turn the knob (arm side) counterclockwise to
detach it.
5. Remove the two washers (PIA.20), friction
plate, and friction sheet.
6. Remove the knob stopper screw.
7. Turn the knob (arm side) counterclockwise to
detach it.
8. Remove the two washers (PIA.20), friction
plate, and friction sheet.
Knob stopper screw
Knob (arm side)
Friction plate
Friction sheet
Washers (PIA.20)
When installing
the washers,
install them in
this orientation.
Knob stopper
screw
Knob (arm side)
Friction plate
Friction sheet
Washers (PIA.20)
When installing
the washers,
install them in
this orientation.