Sony HDVF-L750 User manual

LCD COLOR VIEWFINDER
HDVF-L750
HDVF-L770
SERVICE MANUAL
1st Edition

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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.
Model Name Serial No.
HDVF-L750 (SY) 0100001 and Higher
HDVF-L750 (CN) 0500001 and Higher
HDVF-L770 (SY) 0100001 and Higher
HDVF-L770 (CN) 0500001 and Higher
HDVF-L750/HDVF-L770

Table of Contents
Manual Structure
Purpose of this manual ...................................................................................................................3
Related manuals ..........................................................................................................................3
Trademarks...............................................................................................................................3
1. Service Overview
1-1. Board Location ...............................................................................................................1-1
1-2. Connectors and Cables........................................................................................................1-2
1-2-1. Connection Cables .....................................................................................................1-2
1-2-2. Connector Inputs/Outputs Signals......................................................................................1-2
1-3. Onboard Switches ............................................................................................................1-4
1-3-1. PR-332 Board ..........................................................................................................1-4
1-4. Circuit Description ...........................................................................................................1-5
1-4-1. PR-332 Board...........................................................................................................1-5
1-4-2. CN-3713 Board ........................................................................................................1-7
1-4-3. CN-3715 Board ........................................................................................................1-7
1-4-4. SW-1636 Board ........................................................................................................1-7
1-4-5. SW-1637/SW-1638 Boards (HDVF-L770 only) ......................................................................1-7
1-4-6. VR-352 Board ..........................................................................................................1-7
1-5. Coaxial Cable.................................................................................................................1-8
1-5-1. Disconnecting/Connecting Fine-Wire Coaxial Cable..................................................................1-8
1-5-2. Disconnecting/Connecting Coaxial Cable..............................................................................1-8
1-6. Service Tools/Equipment....................................................................................................1-10
1-6-1. Service Tools..........................................................................................................1-10
1-6-2. Equipment.............................................................................................................1-10
1-7. Locations for Greasing.......................................................................................................1-11
1-8. Adjusting the Arm Lift Angle...............................................................................................1-12
1-9. Firmware and PLD Upgrading...............................................................................................1-14
1-9-1. ROM and Software Versions Check..................................................................................1-14
1-9-2. Writing and Rewriting Software......................................................................................1-14
1-9-3. Writing and Rewriting PLD Internal Data............................................................................1-14
1-10. Notes on Replacing the Board...............................................................................................1-15
1-11. Lead-free Solder.............................................................................................................1-16
2. Replacement of Main Parts
2-1. Tightening Torque.............................................................................................................2-1
2-2. VF Holder Assembly (HDVF-L770)/Rear Panel Assembly (HDVF-L750)..................................................2-2
2-3. CN Assembly..................................................................................................................2-3
2-4. PR-332 Board.................................................................................................................2-4
2-5. LCD Module..................................................................................................................2-6
2-6. SW-1636 Board...............................................................................................................2-9
2-7. VR-352 Board................................................................................................................2-11
2-8. SW-1637 Board (HDVF-L770)..............................................................................................2-12
2-9. SW-1638 Board (HDVF-L770)..............................................................................................2-13
2-10. Arm (R) Sub Assembly (HDVF-L770)......................................................................................2-14
2-11. Arm (L) Sub Assembly (HDVF-L770)......................................................................................2-17
HDVF-L750/HDVF-L770 1

2-12. Pan Tilt Base Assembly (HDVF-750).......................................................................................2-19
3. Diagnostics
3-1. STATUS Indicator............................................................................................................3-1
3-2. Device Check..................................................................................................................3-2
3-3. Internal Test Signal............................................................................................................3-3
4. Setup Menu
4-1. Setting Menu..................................................................................................................4-1
4-1-1. Setting Menu Configuration............................................................................................4-1
4-1-2. Description of Switches................................................................................................4-1
4-1-3. Basic Operations........................................................................................................4-1
4-2. Description of Menu..........................................................................................................4-3
4-2-1. TOP Menu..............................................................................................................4-3
4-2-2. OPERATION Menu....................................................................................................4-3
4-2-3. SERVICE Menu........................................................................................................4-3
5. Electrical Adjustment
5-1. Actions to Be Taken When Replacing the LCD Module.....................................................................5-1
6. Spare Parts
6-1. Note on Repair Parts..........................................................................................................6-1
6-2. Exploded Views...............................................................................................................6-2
6-3. Supplied Accessories........................................................................................................6-10
7. Diagrams
Block Diagrams.........................................................................................................................7-1
Frame Wiring...........................................................................................................................7-3
HDVF-L750/HDVF-L770 2

Manual Structure
Purpose of this manual
This manual describes the information items that premise the service based on the block-level such as service overview,
replacement of main parts, diagnostics, setup menu and electrical adjustment assuming use of system and service
engineers.
Related manuals
The following manual is provided for this unit in addition to this "Service Manual".
• Operation Guide (Supplied with this unit)
• Operation Manual CD-ROM (Supplied with this unit)
This manual contains information required to operate and use the unit.
• Factory Service Manual (Available on request)
This manual describes the information items that premise the service based on the components parts.
Trademarks
System names and product names written in this manual are usually registered trademarks or trademarks of respective
development manufacturers.
HDVF-L750/HDVF-L770 3

Section 1
Service Overview
1-1. Board Location
SW-1638
HDVF-L770
HDVF-L750
PR-332
SW-1637
SW-1636
VR-352
CN-3713
CN-3715
VR-352
CN-3713
CN-3715
PR-332
SW-1636
HDVF-L750/HDVF-L770 1-1

1-2. Connectors and Cables
1-2-1. Connection Cables
When connecting the HDVF-L750/L770 to a camera at the time
of installation or service, use the supplied connection cable.
• Connection cable (20-pin)
Sony part No.: 1-838-608-21
• Connection cable (26-pin)
Sony part No.: 1-848-062-21
1-2-2. Connector Inputs/Outputs Signals
1. CAM (Round, 20-pin)
5
10
15
20
1
6
11
16
- External View -
Round, 20-pin, Female
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 NC — No connection
6 NC — No connection
7 NC — No connection
8 G TALLY IN ON: +5 V
OFF: GND
9 NC — No connection
10 NC — No connection
11 NC — No connection
12 Y VIDEO (X) IN 1.0 Vp–p, Zi=75 Ω
13 VIDEO GND — GND for VIDEO
14 Pb VIDEO (X) IN 0.7 Vp–p, Zi=75 Ω
Continued
No. Signal I/O Specifications
15 Pr VIDEO (X) IN 0.7 Vp–p, Zi=75 Ω
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
2. CAM (Rectangular, 26-pin)
- External View -
Rectangular, 26-pin
113
1426
No. Signal I/O
1 SHIELD_GND —
2 LVDS_1– IN
3 LVDS_2– IN
4 LVDS_3– IN
5 LVDS_CLK– IN
6 LVDS_4– IN
7 LVDS_5– IN
8 VF_ON OUT
9 SDA IN /OUT
10 UNREG IN
11 UNREG IN
12 GND —
13 GND —
14 GND —
15 LVDS_1+ IN
16 LVDS_2+ IN
17 LVDS_3+ IN
18 LVDS_CLK+ IN
19 LVDS_4+ IN
20 LVDS_5+ IN
21 SRX OUT
22 SCL IN
23 UNREG IN
24 UNREG IN
25 GND —
26 SHIELD_GND —
3. SDI IN
BNC type
• 3G-SDI: SMPTE 424M/425M compliant
0.8 Vp-p, 75 Ω, 2.970 Gbps/2.967 Gbps
HDVF-L750/HDVF-L770 1-2

• HD-SDI: SMPTE 292M compliant
0.8 Vp-p, 75 Ω, 1.485 Gbps/1.4835 Gbps
4. DC IN
1
23
4
- External View -
DIN, 4-pin, Male
No. Signal I/O Specifications
1 UNREG GND — GND for UNREG
2 TALLY IN ON: GND
OFF: High impedance
(Open collector)
3 NC — No connection
4 UNREG IN +10.5 to 17 V dc, 2 A
(max)
HDVF-L750/HDVF-L770 1-3

1-3. Onboard Switches
1-3-1. PR-332 Board
PR-332 board (A side)
EDCA B F
S1200
S1202
1
2
3
4
Ref. No. Name Bit Function Factory default set-
ting
S1200 — 1 to 6 Not used All OFF
MODEL 7 Selection of model
OFF: HDVF-L750
ON: HDVF-L770
Differ according to the
model*1
AREA 8 Selection of destination
OFF: SYM
ON: CN
Differ according to the
destination*1
S1202 TEST SIGNAL 1, 2 Selection of signal output (type) to TP700
(Refer to“3-3. Internal Test Signal”)
All OFF
TEST POINT 3 to 5 Selection of signal output (point) to
TP700
(Refer to“3-3. Internal Test Signal”)
All OFF
— 6 to 8 Not used All OFF
*1: All these bits were set to off when the board was purchased.
When installing this board to the HDVF-L750/L770, change the setting of these bits in accordance with the model and destination.
HDVF-L750/HDVF-L770 1-4

1-4. Circuit Description
HDVF-L750/HDVF-L770 consists of the following boards.
• PR-332 board
• CN-3713 board
• CN-3715 board
• SW-1636 board
• SW-1637/SW-1638 boards (HDVF-L770 only)
• VR-352 board
1-4-1. PR-332 Board
The PR-332 board mainly consists of a power supply block, a video input block, a video signal processing circuit, a
tally control circuit, and a microcomputer.
Video Input Block
This unit has three inputs: analog (20p) interface, digital (26p) interface, and 3G SDI input.
• Analog (20p) interface
Analog HD Y/Pb/Pr signals that are input to CN100 are transferred to the video amplifier (IC204, IC205, IC206)
and the LPF (IC207), are converted to 10-bit digital signals at a rate of 74 Mbps by the A/D converter (IC300), and
are then input to the FPGA (IC1).
The HD/VD synchronizing signal generated in the sync separator IC (IC209) is input to the FPGA (IC1).
• Digital (26p) interface
LVDS signals encoded on the camera side are input to the FPGA (IC1) through CN101, and are then decoded to
digital video signal, synchronizing signal, serial control signal, and TALLY lighting control signal, etc.
• SDI input
The SDI signal that is input to CN501 is input to the SDI equalizer (IC501) in which impedance conversion and
level adjustment are performed. Then the processed SDI signal is input to the FPGA (IC1).
Video Signal Processing Circuit
Peaking processing, ZEBRA/FALSE COLOR processing, and WFM signal creation are applied to digital video signals
that are input to the FPGA (IC1). Then the signals are distributed to two channels, and are then input to the image
processing IC (IC2). This image processing IC (IC2) performs picture size conversion and IP conversion to convert the
input YC digital signals to full-HD YC digital signals. This IC also performs processing to combine two screens.
The full-HD YC digital signals that are output from the image processing IC (IC2) are input again to the FPGA (IC1)
that performs YC-to-RGB conversion, brightness setting, knee correction, and convolution of the guide frame and the
OSD signal. The converted and processed signals are input to the LVDS transmitter circuit (IC1400).
The LVDS transmitter converts each 8-bit RGB digital signal and synchronizing signal to LVDS signals, and outputs
the converted signals to CN1400.
The FPGA (IC1) configures a PLL circuit with the phase comparator (IC1300), VCO1, and VCO2 to control the VCO's
oscillation frequency to synchronize it with the HD signal that is input to the FPGA (IC1).
Generating Internal Test Signals
The FPGA (IC1) has two circuits to generate internal test signals at the front and rear to switch test signals and main-
line signals.
HDVF-L750/HDVF-L770 1-5

Control System
The CPU (IC1203) sends and receives data to/from the FPGA (IC1) and the image processing IC (IC2) through serial
communication. This CPU also sets parameters for the LPF and the A/D converter through I²C communication.
Brightness, contrast, peaking potentiometer level signal lines are connected to CPU's A/D input ports to control them.
The D/A output ports are connected to the analog dimming control pins of the LED driver ICs (IC1401, IC1502) to
control backlight and UP TALLY brightness.
The FPGA (IC1) performs PWM dimming control for TALLY/INDICATOR, backlight ON/OFF control through the
LED driver IC (IC1401), and brightness control using the PWM dimming control in conjunction with the contrast
potentiometer. Furthermore, this FPGA performs I²C communication or serial communication with the connected
camera.
ROM
The onboard EEPROM (IC1208) retains setup data, operating hours of the unit, and other data. The EEPROM (IC105)
also retains model information of the unit such as serial number.
The FPGA can be upgraded through CN400. (Refer to “1-9-3. Writing and Rewriting PLD Internal Data”)
Power Supply Block
This block has 16 outputs that operate within the proper input power voltage range.
• Power input switching circuit
This unit is provided with other three power input methods: power supply from the CAM (camera) connectors (20p
and 26p) and power supply from the DC IN connector. Each power input is connected to the FET switch (Q1631,
Q1632, Q1635, Q1636, Q1639, and Q1640). When power is input to the DC IN connector, the DC IN connector
is preferentially selected.
• Input voltage monitoring circuit
The input voltage monitoring circuit (IC1601) supplies power to the DC/DC controller IC (IC1603) when the input
voltage is within the proper range.
Power supply operates when the input voltage is within the proper range (+9.5 to +17.5 V). Once power is supplied,
the power supply block works within an input voltage range of +8.3 to +18.5 V. If the input voltage lowers below
+8.3 V or rises above +18.5 V, Q1605 is turned off to shut off supply of UNREG power. The UNREG power
voltage is not restored until it enters the proper range.
• Protective circuit
The DC-DC converter (IC1700, IC1701, IC1702, and IC1800) incorporates an output error detection circuit. When
an error is detected in any output, the POWERGOOD pin is turned low. The POWERGOOD pin output signal is
input to IC1003. When an error is detected, the SHUTDOWN signal is output. This SHUT DOWN signal turns off
Q1605 to shut off the UNREG power supply.
HDVF-L750/HDVF-L770 1-6

• Power supply control circuit
IC1603 is a synchronous rectification-type back DC-DC controller that generates +5 V and +3.3 V from the UNREG
voltage supplied from the external circuit.
IC1700 to IC1703 compose a step-down switching regulator. IC1700, IC1701, and IC1702 generate power voltages
+1.8 V, +1.2 V, and +1.0 V from the +3.3 V input voltage, and ICI703 generates a power voltage +2.5 V from the
+5 V input voltage.
IC1704 and IC1705 compose an LDO regulator that generates power voltages +1.2 V_SDI and +1.0 V_SDI from
the +1.8 V input voltage.
Power voltages +5 V_A, +3.3 V_A, +1.8 V_A, and -5 V_A are used for analog circuits. The step-down switching
regulator (IC1801) generates a power voltage +5 V_A from the UNREG voltage supplied from the external circuit.
From this +5 V_A input voltage, the step-down switching regulator (IC1801) generates +3.3 V_A, and the inverter
power IC (IC1803) generates -5 V_A. Furthermore, the LDO regulator (IC1802) generates +1.8 V_A from the +3.3
V_A input voltage.
IC1101 is a DDR termination regulator that generates a VTT bus termination power voltage of the DDR memory.
• LCD module power supply circuit
The +3.3 V_LCD power supply circuit for the LCD module activates the FET switch (Q1705) by using the control
signal from the FPGA (IC1) to perform ON/OFF control. While the +3.3 V_LCD power supply circuit is turned
off, this circuit discharges C1727 and the LCD module.
• LED drive circuit
This unit has two LED drive circuits to control the LCD module backlight and UP TALLY.
In the backlight drive circuit (IC1401), brightness setting was made in the factory shipping process by the analog
dimming control by using the DC signal from the D/A port of the CPU (IC1203). The LED drive circuit also controls
brightness according to the ON/OFF control from the FPGA (IC1) and the PWM dimming control in conjunction
with the contrast potentiometer.
In the Up Tally drive circuit (IC1502), brightness setting is made according to the ON/OFF control from the FPGA
(IC1) and the analog dimming control by using the DC signal from the D/A port of the CPU (IC1203).
1-4-2. CN-3713 Board
This board contains a 20-pin analog interface camera connector (CN100).
1-4-3. CN-3715 Board
This board contains the DC IN connector (CN200) to supply external power.
1-4-4. SW-1636 Board
This board contains a rotary encoder (EN300) and a switch (S300) for setup menu, two ASSINABLE switches (S302,
S303), and POWER ON/SAVE switch (S301).
1-4-5. SW-1637/SW-1638 Boards (HDVF-L770 only)
Each of these boards contains two ASSINABLE switches (SW-1637: S400, S401 / SW-1638: S500, S501).
1-4-6. VR-352 Board
This board contains three potentiometers BRIGHT (RV600), CONTRAST (RV601), and PEAKING (RV602).
HDVF-L750/HDVF-L770 1-7

1-5. Coaxial Cable
1-5-1. Disconnecting/Connecting Fine-Wire Coaxial Cable
Note
• Be very careful when handling the fine-wire coaxial cable so that fine wires are not disconnected.
• When disconnecting the fine-wire coaxial cable, be sure to hold the connector. Do not attempt to pull the cable.
• Check that the contact surface of the fine-wire coaxial cable connector is free from dirt or dust.
Disconnecting
IPX
Hold the connector to disconnect.
OK
Do not attempt to disconnect by
pulling the cable.
NG
Fine-wire coaxial cable
Connector
Polarity marks
1. Hold both sides of the fine-wire coaxial cable connector, and pull the connector straight to disconnect it.
Connecting
IPX
Fine-wire coaxial cable
Connector
Polarity marks
Note
Firmly insert the connector straight as far as it will go.
1. Insert the connector straight matching the polarity marks.
1-5-2. Disconnecting/Connecting Coaxial Cable
Note
Be sure to observe the disconnecting and connecting procedures below to prevent wire disconnection or poor contact.
Required Tool
• Connector remover (Part No: J-7121-210-A)
HDVF-L750/HDVF-L770 1-8

Disconnecting
1. Fit the notch at the end of the connector remover into the connector of a coaxial cable, and pull the connector
remover straight.
Note
• Insert the notch of the connector remover from the opposite side of the cable of the coaxial cable.
• Do not attempt to pull the cable.
Coaxial cable
Notch
Connector remover
Connecting
1. Hold the plug of the coaxial cable.
2. Push the plug perpendicularly to the connector while slightly turning the plug clockwise and counterclockwise.
Hold the plug to connect
Connecting connector
HDVF-L750/HDVF-L770 1-9

1-6. Service Tools/Equipment
1-6-1. Service Tools
Part No. Name Application
J-6323-430-A Torque screwdriver’s bit (M3) Screw tightening
J-6325-110-A Torque screwdriver’s bit (M1.4) Screw tightening
J-6325-380-A Torque screwdriver’s bit (M2) Screw tightening
J-6325-400-A Torque screwdriver (3 kg·cm) (0.3 N·m) Screw tightening
J-6252-510-A Torque screwdriver (6 kg·cm) (0.6 N·m) Screw tightening
J-6252-520-A Torque screwdriver (12 kg·cm) (1.2 N·m) Screw tightening
J-6510-120-A RS232 Interface cable Used for software data downloading
J-7121-210-A Connector remover Disconnecting coaxial cables
Commercially available Xilinx Platform Cable USB II Used for PLD data downloading
1-6-2. Equipment
Equipment Model name
HDD camera The camera indicated to the "Related Equipment" of the OPERATION MANUAL.
General-purpose personal computer —
HDVF-L750/HDVF-L770 1-10

1-7. Locations for Greasing
The following figures show locations that require greasing. Apply grease to these locations as needed.
• Arm
Cone lock shoe
(top surface)
Cone lock shoe
(top surface)
Hole (slope)
Hole (slope)
Arm shaft (outer surface)
Hole
(inner surface)
Knob (threads)
Knob (threads)
Knob (threads)
Knob (threads)
Springs
(outer surface)
Springs
(outer surface)
• Slide base
Lift center shaft groove
Lift center shaft grooves Lift center shaft grooves
Warm gear shafts
(upper/lower)
U grooves
Gear engaging portion
Wheel gear
hole inside
(only both ends)
HDVF-L750/HDVF-L770 1-11

1-8. Adjusting the Arm Lift Angle
Note
The arm lift angle is set as shown in the figure. Check and adjust the lift angle as needed.
5d
0d
75d
Lift angle range of the arm
Procedure
1. Remove the eight screws to detach the VF holder unit.
2. Remove the base guide.
B3 x
5
B3 x 5
Base guard
VF holder unit
3. Set the lift stopper in the lower-limit position.
• Loosen the two set screws.
• Set the arm angle to 5 degrees upward and contact the arm with the stopper pin as shown in the figure.
• Apply locking compound to the two setscrews and tighten them to the specified torque.
Lower-limit setting of lift stopper
Stopper pin
(Tightening torque: 0.8 ± 0.12 N•m)
Lift stopper
setscrews
HDVF-L750/HDVF-L770 1-12

4. Set the lift stopper in the upper-limit position.
• Loosen the two set screws.
• Set the arm angle to 75 degrees upward and contact the arm with the stopper pin as shown in the figure.
• Apply locking compound to the two setscrews and tighten them to the specified torque.
Lower-limit setting of lift stopper
Stopper pin
(Tightening torque: 0.8 ± 0.12 N•m)
Lift stopper
setscrews
5. Install the removed parts by reversing the steps of removal.
HDVF-L750/HDVF-L770 1-13

1-9. Firmware and PLD Upgrading
Note
Do not version down the ROM. Equipment may not operate normally.
ROMs are mounted on the PR-332 board of this unit.
Board Ref. No. Address
PR-332 IC400 D4 (side A)
1-9-1. ROM and Software Versions Check
Procedure
1. Display the TOP menu. (Refer to“4-2-1. TOP Menu”)
2. Display the VERSION screen in the SERVICE menu.
3. Confirm the version of ROM and software.
1-9-2. Writing and Rewriting Software
If software data needs to be upgraded, contact your local Sony Sales Office/Service Center.
1-9-3. Writing and Rewriting PLD Internal Data
If PLD needs to be upgraded, contact your local Sony Sales Office/Service Center.
HDVF-L750/HDVF-L770 1-14