Hitachi Vks274 Service Manual

TK No. 8104E

VK-S274/S274E

SERVICE MANUAL

VK-K274/K274E

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

COLOR & B/W VIDEO CAMERA

2001September

Digital Media Products Division,Tokai

Cautions

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts have special safety-related characteristics. These are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for a higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified by marking with a on the schematics and the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the HITACHI recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current HITACHI Service Manual. A subscription to, or additional copies for, HITACHI Service Manual may be obtained at a nominal charge from HITACHI SALES CORPORATION.

How to discriminate the "TYPE" identifications in the manual

The parts and circuits are identified by "TYPE" in this manual to discriminate the differences between models. The TYPE numbers are the same as the model numbers. The table below shows how to read the type identifications.

TYPE identification Model name

TYPE S VK-S274 TYPE SE VK-S274E TYPE K VK-K274 TYPE KE VK-K274E

Microsoft, MS, MS-DOS, Windows and Windows NT are registered trademarks of Microsoft Corporation. Pentium and Celeron are registered trademarks of Intel Corporation. Manufactured under license from Dolby Laboratories. "Dolby" and double-D symbol are trademarks of Dolby Laboratories. Confidential unpublished works. (C) 1992-1997 Dolby Laboratories Inc. All rights reserved. IBM is registered trademarks of International Business Machines Corporations. Other company names and product names listed are trademarks or brand names belonging to each company.

CAUTION- 1

Notes When Using Service Manual

The following shows the contents to be noted when using service manual:

1. Value units used in parts list

Certain symbols are indicated below for value units of resistors, capacitors and coils in parts list. When you read them note the following regular indications:

Parts

Resistor

Capacitor

Coil

Indication in list Regular indication

...........................................

KOHM

................................................

...............................................

2. Values in schematic diagrams

The values, dielectric strength (power capacitance) and tolerances of the resistors (excluding variable resistors) and capacitors are indicated in the schematic diagrams using abbreviations.

[Resistors]

Item

Value

Tolerance

Power

capacitance

Indication

No indication

...................................................

..................................................

No indication

(All tolerances other than ±5% are

indicated in schematic diagrams)

No indication

(1/16W for leadless resistors without

indication)

All capacitances other than the above

are indicated in schematic diagrams.

...................................

.............................

............................

±5%

1/8W

µF

µH

3. Identifications of sides A/B in circuit board diagrams

1) Board having a pattern on one side and parts on both sides. Side A: Shows discrete parts, viewed from the pattern

side.

Side B: Shows leadless parts, viewed from the

pattern side.

2) Board having patterns on both sides and parts on both sides. Side A: Shows parts and patterns which can be seen

when the case is opened.

Side B: Shows parts and the pattern on the back of

side A.

4. Table for indexing locations of parts

This table shows locations of each part on circuit board diagrams. The locations are indicated using the guide scales on the external lines of diagrams.

1) One diagram indicated for each board

Symbol

No.

IC1201

Circuit No.

2) Two diagrams indicated for each board

Parts

Location

Type of part

2 A

Zone "A" on board diagram

Zone "2" on board diagram

[Capacitors]

Item

Value

Dielectric

strength

[Coils]

Item

Value

CAUTION- 2

Indication

No indication

...................................................

No indication

(All dielectric strengths other than 50V

are indicated in schematic diagrams)

Indication

....................................................

..................................................

.................................

..............................

µF

50V

µH

Symbol

No.

IC1201

Circuit No.

Parts

Location

A - 2 A

A: Shows side A B: Shows side B

Type of part

Zone "A" on board diagram Zone "2" on board diagram

CHAPTER 1 GENERAL INFORMATION

1. Specifications

2. Comparison with Previous Model

2.1 Comparison of Specifications

2.2 Comparison of ICs

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1-1 1-2 1-2 1-2

CHAPTER 2 DISASSEMBLY

1. Procedure

..............................................................

2-1

CHAPTER 3 ELECTRIC CIRCUIT

ADJUSTMENT

1. Test Equipment/Jigs Necessary for Adjustment

1.1 List of Equipment and Jigs

1.2 List of Charts for Adjustment

1.3 Test Equipment, etc.

2. Before Stating Adjustment

2.1 Connections for Adjustment

2.2 Notes

2.3 Setting Test Equipment

3. List of Adjustment Items

4. Starting Adjustment Program (SMAP)

5. Data Initilize Procedure

5.1 Data Initilize

6. Electronic Volume Adjustment Procedure

6.1 CDS Sampling Pulse Adjustment

7. Camera Adjustment (Adjustment) Procedure

7.1 Auto Iris Control Adjustment

7.2 Matrix Adjustment [For TYPE S/SE]

7.3 White Balance Adjustment [For TYPE S/SE]..3-9

7.4 Chroma Gain Adjustment [For TYPE S/SE]

8. Autofocus Adjustment Procedure

8.1 Zoom/Focus Tracking Adjustment

8.2 AF Noise Level Adjustment

8.3 Check of Zoom Trace

9. Spot Noise Adjustment Procedure

9.1 Spot noise Adjustment

10. Error Messages

10.1 Error massage of Electronic Volume and

10.2 Error massage of Autofocus Adjustment

10.3 Error massage of Spot Noise Adjustment

10.4 Troubleshooting of Autofocus (1) No zoom and focus operation (2) No focus lens operation (3) No zoom operation (4) No autofocus operation (5) Subject is greatly out-of-focus

...............................................................

..........................................

.....................................................

......................................................

Camera Adjustment

when zoomed

................................................

..............................

...........................

.......................................

.....................................

............................

...................................

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...................

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..........................

..................

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....

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........

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....

.......

......

3-1 3-1 3-1 3-1 3-2 3-2 3-2 3-3 3-4 3-5 3-6 3-6 3-7 3-7 3-8 3-8 3-8

3-10 3-11 3-11 3-12 3-12 3-13 3-13 3-14

3-14 3-15 3-15 3-16 3-16 3-18 3-19 3-20

3-21

CHAPTER 4 EXPLODED VIEW

1. Exploded View

.......................................................

CHAPTER 5 REPLACEMENT

PARTS LIST

1. Mechanical Parts List

2. Electrical Parts List

.............................................

................................................

CHAPTER 6 SCHEMATIC, CIRCUIT

BOARD AND BLOCK DIAGRAMS/MICROPRO CESSOR PIN FUNCTION TABLES

Schematic Diagrams

Connection Diagram Waveforms Sensor [SP] Process [PC] (For Display) Process [PC] (For Printing) <A-a> Process [PC] (For Printing) <A-b> Switching Regulator [CSR]

...................................................................

..................................................................

Circuit Board Diagrams

PC -Side A/B-

Identification of Parts Location

SP -Side A/B-

Identification of Parts Location

CSR -Side A/B-

Identification of Parts Location

Block Diagrams

Overall

.........................................................................

Microprocessor Pin Function Tables

Digital Microprocessor (IC1201: D-µP)

....................................................

..........................................

...............................

..........................................

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...............................................................

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4-1

5-1 5-2

6-1 6-1 6-2 6-3 6-4 6-5 6-6

6-9 6-7 6-10 6-7 6-10 6-8

6-11

6-12

CONTENTS-1

CHAPTER 1 GENERAL INFORMATION

1. Specifications

Note: The specifications are subject to change for improvement without notice.

Signal VK-S274: NTSC Format

VK-S274E: PAL Format VK-K274: EIA Format VK-K274E: CCIR Format

Scanning System 2:1 Interlaced

Image Sensor 4.5 mm Dia. (1/4-inch) CCD Image Sensor

Number of Effective Pixels VK-S274/K274: 380 k [786 (H) × 494 (V)]

VK-S274E/K274E: 440 k [752 (H) × 582 (V)]

Total Number of Pixels VK-S274/K274: 410 k [811 (H) × 508 (V)]

VK-S274E/K274E: 470 k [795 (H) × 596 (V)]

Scanning Frequency VK-S274/K274: Horizontal 15.734 kHz

Vertical 59.94 Hz

VK-S274E/K274E: Horizontal 15.625 kHz

Vertical 50 Hz

Lens F1.6 to 3.8 (4 to 88 mm) 22 : 1 power zoom lens with autofocus

Video Signal Output VK-S274/S274E: Composite Signal 1.0 Vp-p

VK-K274/K274E: Y (Luminance) Signal 1.0 Vp-p

Minimum Required Illumination VK-S274/S274E: Standard 1.0 lx

DS shutter 0.1 lx

VK-K274/K274E: Standard 0.1 lx

DS shutter 0.01 lx

S/N Ratio 50 dB or more

Horizontal Resolution 470 TV Line or more

Operating Temperature 0 to 60 °C

Operating Humidity 10 to 90 %

Power Input DC 9 V ± 0.5 V

Power Consumption 3.3 W or less

Dimensions 50 (W) × 60 (H) × 89.5 (D) mm

Weight Approx. 225 g

1 - 1

2. Comparison with Previous Model

2.1 Comparison of Specifications

ITEM

Signal Format

Power Requirements Power Consumption Dimensions (W × H × D mm) Weight Lens

Operating Temperature/Humidity

Image Sensor Number of Effective Pixels

Total Number of Pixels

Scanning System Horizontal Scanning Frequency

Vertical Scanning Frequency

Sync Format Video Signal Output

S/N Ratio Horizontal Resolution

Minimum Required Illumination (Standard) IR cf Mode

VK-S274/VK-S274E VK-K274/VK-K274E

VK-S274: NTSC VK-S274E: PAL VK-K274: EIA VK-K274E: CCIR

DC 9 V

3.3 W (MAX) 50 × 60 × 89.5 Approx. 225 g Power zoom × 22 (4.0 - 88.0 mm) F 1.6 0 °C to 60 °C (Recommendation: 0 °C to 40 °C) 10 % to 90 %

4.5mm Dia. (1/4 inch) CCD VK-S274/K274: 786 (H) × 494 (V) VK-S274E/K274E: 752 (H) × 582 (V) VK-S274/K274: 811 (H) × 508 (V) VK-S274E/K274E: 795 (H) × 596 (V)

2 : 1 Interlaced VK-S274/K274: 15.734 kHz VK-S274E/K274E: 15.625 kHz VK-S274/K274: 59.94 Hz VK-S274E/K274E: 50 Hz

Internal/External VK-S274/S274E:

Composite Signal 1.0 Vp-p

VK-K274/K274E:

Y (Luminance) Signal 1.0Vp-p 50 dB or more 470 TV Line or more

VK-S274/S274E: 1.0 lx VK-K274/K274E: 0.1 lx

Not Provided

VK-S234/VK-S234E VK-K234/VK-K234E

VK-S234: NTSC VK-S234E: PAL VK-K234: EIA VK-K234E: CCIR

VK-S234/K234: 768 (H) × 494 (V) VK-S234E/K274E: 752 (H) × 582 (V) VK-S234/K234: 811 (H) × 508 (V) VK-S234E/K234E: 795 (H) × 596 (V)

VK-S234/K234: 15.734 kHz VK-S234E/K234E: 15.625 kHz VK-S234/K234: 59.94 Hz VK-S234E/K324E: 50 Hz

VK-S234/S234E:

Composite Signal 1.0 Vp-p

VK-K234/K234E:

Y (Luminance) Signal 1.0Vp-p 46 dB or more VK-S234: 470 TV Line or more VK-S234E: 460 TV Line or more VK-K234/K234E: 500 TV Line or more VK-S234/S234E: 3.0 lx VK-K234/K234E: 0.1 lx

2.2 Comparison of ICs

ITEM

CCD Sensor

Sensor Drive (or Drive Pulse Gen.) CDS AGC & A/D CONV. Camera Digital Signal Processor (DSP) DRAM Inv. Clock Generator (or Inv.) Camera (or Digital) µP EEPROM Reset Pulse Gen.

Zoom Motor Drive Focus Motor Drive F.Det./Iris Drive PWM Y/C Mix. & Video Amp Level Shift VCO/Phase Compa. FV Pulse Gen.

1 - 2

VK-S274/VK-S274E VK-K274/VK-K274E

VK-S274: ICX278AK-L (IC1001) VK-S274E: ICX279AK-L (IC1001) VK-K274: ICX278AL-7 (IC1001) VK-K274E: ICX279AL-7 (IC1001)

µPD16510GR (IC1002) HD49323AF (IC1101) HG73C053FE (IC1121)

MSM51V18165F (IC1122) TC7SU04FU (IC1173) TC7SHU04FUL (IC1174) HD64F2238AFA13-S274 (IC1201)

X25097V1-2.7 (IC1202) RN5VD27AA (IC1203) TC7SH14FU (IC1204/IC1205) TC7S08FU (IC1206)

MPC17AT85VM (IC1301)

MPC17AT85VM (IC1302)

µPD5023GS-147-GJG (IC1351)

TL1464IPT (IC1501)

BA7664FV (IC1601)

HD74HCT125T (IC1602)

74VHC4046MTCX (IC1603)

IDC-7S08 (IC1604)

VK-S234/VK-S234E VK-K234/VK-K234E

VK-S234: ICX208AK-6 (IC1001) VK-S234E: ICX209AK-6 (IC1001) VK-K234: ICX208AL-6 (IC1001) VK-K234E: ICX209AL-6 (IC1001)

TC7SHU04F (IC1173) TC7SU04F (IC1174) HD6432237M (IC1201)

RN5VT28AA (IC1203) TC7SH14FU (IC1204/IC1205)

CHAPTER 2 DISASSEMBLY

1. Procedure

CHASSIS (R)

(5) REMOVE ONE SCREW

(4) DISCONNECT

FLAT CABLE

(*1)

(6) REMOVE THE

PC CIRCUIT BOARD

(10) REMOVE

PC CIRCUIT

CRYSTAL FILTER

LENS BLOCK

BOARD

RUBBER

CCD SENSOR

TWO SCREWS

SP CIRCUIT BOARD

(9) REMOVE TWO

SCREWS

(*2)

CSR CIRCUIT BOARD

(11) REMOVE

TWO SCREWS

(7) REMOVE

ONE

(8) REMOVE

THE CSR CIRCUIT BOARD

SCREW

CAMERA CHASSIS

(12) REMOVE

(1)

(2)

(1) Release the lock of the connector

on the left and right.

(2) Pull out the flat cable

Fig. 2-1-2

ONE SCREW

CHASSIS (L)

(1) REMOVE

TWO

SCREWS

Fig. 2-1-1

(2) REMOVE

TWO SCREWS

(3) REMOVE

TWO SCREWS

: Do not the pull out the flat cable or touch the exposed

terminal at the connecting position with your bare hands as it could cause a defective (1) and (2) shown in Fig. 2-1-2.

: When the SP circuit board is removed, the crystal filter

and rubber are also removed. Be careful not to damege and lose them.

2 - 1

CHAPTER 3 ELECTRIC CIRCUIT ADJUSTMENT

1. Test Equipment/Jigs Necessary for Adjustment

1.1 List of Equipment and Jigs

New

Adjutsment Floppy Disk (

)

Personal Computer (PC)

[Goods on the Market]

DSP Interface Connect Jig

No. 7069179

Personal Computer Cable

RS-232C (9 or 25 pins) Straight Type

[Goods on the Market]

1.2 List of Charts for Adjustment

DSP-R Jig

No.7099448

: The adjustment floppy disk is not for sale: It will be

supplied only when service maintenance contract is concluded.

C12 Light Balancing Filter

No.7099369

Color Bar Chart Gray Scale Chart Backfocus Chart

1.3 Test Equipment, etc.

Color video monitor (color TV for monitoring) Oscilloscope Vectorscope [If not available, adjustment is still possible, but easier if this is used] Digital voltmeter (DVM) 3100 K light box DC power supply (9 V/3 A) [To power of video camera] DC power supply (5 V/1 A) [To power of DSP-R jig]

3 - 1

2. Before Starting Adjustment

2.1 Connections for Adjustment

Connect the video camera to the test equipment and jigs as shown in Fig. 2-1.

LIGHT BOX

DC POWER SUPPLY (9V/3A)

GND

DC POWER SUPPLY (5V/1A)

VIDEO CAMERA

PG1601

DSP INTERFACE CONNECT JIG

RD WHT

SD BRW

GND BRW

+B BRW

GND BRW

VIDEO BRW

GND(VIDEO) BRW

EX. FV BRW

GND BRW

YEL

RED

9PIN FLAT CABLE (ACCESSORY)

2345

WHT BLK

COLOR VIDEO MONITOR

VIDEO IN

PERSONAL COMPUTER

GND

BLK

DSP-R JIG

PERSONAL COMPUTER CABLE (RS-232C)

Fig. 2-1

2.2 Notes

1) All adjustments are performed using the adjustment program and personal computer (PC). The adjustment program is subject to change without notice for improvements in functions and operability, and the actual instructions on PC screen may be different from those in this manual: If so, follow the instructions on PC screen to proceed with adjustment.

2) Since this chapter uses the device with the highest performance among the models listed to explain adjustment, the actual instructions on PC screen may be different from those in this manual, depending on whether some functions are provided or not: If so, follow the instructions on PC screen to proceed with adjustment.

3) The adjustment program will not operate normally unless the video camera, PC and test equipment/jigs are all turned on.

3 - 2

4) Be sure to connect the video output of video camera to a color video monitor (terminate the video output with 75 ohm: If the video output is not connected to the monitor (and if it is not terminated with 75 ohm), the output video signal level cannot be measured correctly.

5) Use light box that does not flicker and whose color temperature is controlled, for adjustment. If an inappropriate light box is used, precise adjustment will not be possible, and the adjustment program will not operate normally.

6) Take care with the following when pointing the video camera at a chart (light box):

Focus the chart correctly. Set the chart (light box) 30-50 cm away from the lens surface, and avoid any effects from surrounding light (except for a case where some designation is given). Aim at the chart and let chart fill the screen (video period). (Except for a case where some designation is given.)

2.3 Setting Test Equipment

1) Set the switches, knobs and each mode of oscilloscope as follows for adjustment:

Probe: 10:1 TIME/DIV: 10 or 20 µs (except for a case where some designation is given) VOLTS/DIV: Will vary depending on the measurement object (except for a case where some designation is

given) Synchronization: Internal sync (except for a case where some designation is given) AC/DC/GND: AC (except for a case where some designation is given)

Note: The names of switches, knobs, modes, etc. of oscilloscope may vary slightly depending on the manufacturer or

model. Since some oscilloscopes may have switches, etc. other than the above that must be set, see the instruction manual of the particular oscilloscope for details.

3 - 3

3. List of Adjustment Items

The following table shows the adjustment items, their purposes, and whether or not check is required after replacing major components. The components shown in the table below are the minimum to be checked after replacing major components: If several components have been replaced - or depending on the cause of a defect - more components may need to be checked.

: CHECK

Items Purpose Adjustment

Data Initialize

Data Initilize (*2)

Initilizing EEPROM.

Electric Volume

To suppress noise in the CCD sensor

CDS Sampling Pulse

output signal and maximize the signal level.

Camera Adjustment (Adjustment)

Auto Iris

Matrix (*3)

White Balance (*3)

Chroma Gain (*3)

To set the iris control data.

To compensate for uneveness in the chroma signal

To input the automatic white balance control data. To set the color satuation under the reference color temperrature.

Auto Focus

Zoom/Focus Tracking

AF Noise Level

To set the out-of -focus correction level during zooming. To set the noise level in the autofocus circuit.

Circuit Boards

(*1)

Electrical Parts

IC1001 IC1101 IC1201

IC1250

(*1)

IC1351

Other

Lens Block

Check of Zoom Trace

To check the autofocus adjustment.

Spot Noise

*1: When replacing the PC circuit board (containing EEPROM) or EEPROM, be sure to perform all adjustments

only after "Data Initialize".

*2: Since all adjustments must be performed any time "Data Initialize" is done, do not perform it indiscriminately. *3: For the color video camera (TYPE S/SE).

To correct spot noise.

3 - 4

4. Starting Adjustment Program (SMAP)

C>A: A>

C>A: A>SMAP_IBM 1

***********************************************************

MODEL SELECT

***********************************************************

[1] ЧЧЧЧЧЧЧЧ [2] ЧЧЧЧЧЧЧЧ [3] ЧЧЧЧЧЧЧЧ [4] ЧЧЧЧЧЧЧЧ [5] ЧЧЧЧЧЧЧЧ [P] NEXT SELECTION [ESC] END

Please select the type of the set

Press [1] - [5] or [P] or [ESC]

Selected model is ЧЧЧЧЧЧЧЧ

Are you sure ? (Y/N)

CAN NOT FIND THE DATA FILE

**** PRESS ANY KEY ****

***********************************************************

MANUAL ADJUSTMENT PROGRAM

***********************************************************

[A] DATA INITIALIZE [B] ELECTRIC VOLUME [C] ADJUSTMENT [D] AUTO FOCUS [E] SPOT NOISE [ESC] END

Please select [A] - [F] or [ESC]

Note: If error message appears during adjustment, refer to "10. Error Messages".

1) Connect the video camera, DSP-R jig and PC as shown in Fig. 2-1, and supply power to them. (*1)

2) Operate the PC to start MS-DOS . (*2)

3) Make sure that the adjustment floppy disk is write-protected.

4) Insert the adjustment floppy disk into the floppy disk drive of PC.

5) Use the PC keyboard to type A: and press Enter key. (*3) (See the MS-DOS screen-1 and 2)

6) Type SMAP_IBM (space) 1 and press Enter key. (*4) (See the SMAP input

screen)

7) The SMAP will start: Make sure that the model select screen appears on the PC display. (*5) (See the model select screen)

8) If the appropriate model is displayed on the model select screen, input the number to PC. If the appropriate model name is not shown on the model select screen, input P to PC until the model name appears. (*6)

9) The screen for verifying the model name will appear on PC display: If it is correct, input Y to PC. If it is incorrect, input N and start over (from step 8).

10)Make sure that the main menu appears on PC display: If it does not appear, check whether model selection (in step 8) is correct.

*1: If the connection of jig, etc. is inappropriate or power is not supplied, the

adjustment program will not start normally.

*2: For details on how to start MS-DOS, refer to the instruction manual of PC,

since this varies for each PC.

*3: The letter to be input is to designate the drive into which the adjustment

floppy disk has been inserted. If using a drive other than A, designate the drive.

*4: The number to be input after a space is to designate the serial port no. of

PC. If the PC has two or more serial ports, and the DSP-R jig is connected to a port other than serial port 1, input the serial port number.

*5: If the model select screen does not appear, make sure of the following:

Power is supplied to the video camera and DSP-R jig. The designation of drive (in step 5) is correct. The designation of serial port is correct. The correct adjustment floppy disk has been correctly inserted.

*6: If an erroneous model name or number is selected, misoperation message

will appear on PC display: Press any key to restore the model select screen.

MS-DOS screen-1

MS-DOS screen-2

Type SMAP_IBM 1.

SMAP input screen

Press Enter key.

Model select screen

Model select (Input the number).

Screen for verifying model name

Input Y.

Main menu

To terminate the adjustment program (SMAP):

Press the Esc key once to three times until the PC display returns from each menu screen to the MS-DOS screen. When the MS-DOS screen appears on PC display, turn off the video camera and jig.

Referrence

Misoperation message

3 - 5

5. Data Initialize Procedure

The following explains the adjustment procedure using the adjustment program (SMAP), following the order of items on PC display. Refer to "4. Starting Adjustment Program (SMAP)" in advance, start SMAP and display the main menu on PC display. In actual work, it is possible to adjust one item independently.

Note: If error message appears on PC display during adjustment, perform troubleshooting, referring to "10. Error Messages".

5.1 Data Initialize

This procedure initializes the data in EEPROM (including the adjustment data). Any time you replace the PC circuit board (containing EEPROM) or EEPROM, be sure to perform this procedure. [Generally, this procedure is not necessary after replacing other circuit board (components).]

Important:

After completing this adjustment, be sure to perform all adjustment items as follows.

Procedure:

1) Input A to PC on the main menu screen.

2) The screen for verifying the initialization will appear: Input Y to PC. (*1)

3) Follow the instructions on PC display thereafter.

*1: Entering N on the screen for verifying initialization will restore the

data main menu screen.

Main menu

***********************************************************

MANUAL ADJUSTMENT PROGRAM

***********************************************************

Screen for verifying initialization

[A] DATA INITIALIZE [B] ELECTRIC VOLUME [C] ADJUSTMENT [D] AUTO FOCUS [E] SPOT NOISE [ESC] END

Please select [A] - [F] or [ESC]

Input A.

<< DATA WRITING >>

START TO SEND DATA. (Y/N)

Input Y.

Follow the instructions on PC display thereafter.

3 - 6

***********************************************************

ELECTRIC VOLUME

***********************************************************

[1] CDS SAMPLING PULSE [ESC] RETURN TO MAIN MENU

Please select [1] or [ESC]

***********************************************************

MANUAL ADJUSTMENT PROGRAM

***********************************************************

[A] DATA INITIALIZE [B] ELECTRIC VOLUME [C] ADJUSTMENT [D] AUTO FOCUS [E] SPOT NOISE [ESC] END

Please select [A] - [F] or [ESC]

6. Electronic Volume Adjustment Procedure

***********************************************************

ELECTRIC VOLUME

***********************************************************

[1] CDS SAMPLING PULSE [ESC] RETURN TO MAIN MENU

Please select [1] or [ESC]

Note: If error message appears on PC display during adjustment, perform troubleshooting, referring to "10. Error Messages".

Before starting:

1) Input B to PC on the main menu screen to display the electronic volume

menu screen. (*1)

*1: Pressing the Esc key on the adjustment menu screen will restore the

main menu screen.

Main menu

Input B.

Electronic volume menu

6.1 CDS Sampling Pulse Adjustment

Incompleted Phenomenon:

Diagonal beats and horizontal noise occur.

Condition:

Leave the video camera for more than 2 minutes until the circuits are stabilized after turing it on, then start adjustment.

Procedure:

1) Input 1 to PC on the adjustment menu screen.

2) Follow the instruction on PC display thereafter.

Electronic volume menu

Input 1.

Follow the instructions on PC display thereafter.

3 - 7

7. Camera Adjustment (Adjustment) Procedure

Note: If error message appears on PC display during adjustment, perform

troubleshooting, referring to "10. Error Messages".

Before starting:

1) Input C to PC on the main menu screen to display the adjustment menu

screen.

2) Input to PC the appropriate adjustment number. (*1)

*1: Pressing the Esc key on the adjustment menu screen will restore

the main menu screen.

7.1 Auto Iris Control Adjustment

Incompleted Phenomenon:

The picture becomes too bright. The picture becomes too dark.

Condition:

Set the zoom to wide end and point at the light box, without chart inserted, to fill the screen.

Procedure:

1) Input 1 to PC on the adjustment menu screen.

2) Follow the instruction on PC display thereafter.

3) After the AIC (auto iris control) adjustment complete screen appears, press any key to restore the adjustment menu screen.

4) Turn the video camera off, leave as is for at least 5 seconds, and then turn it on again. (*1)

*1: When the video camera is turned on again, the SMAP may not

operate normally, and the following adjustments may not be possible. If this happens, press the Esc key to restore the MS-DOS screen, and then restart the SMAP.

Main menu

***********************************************************

MANUAL ADJUSTMENT PROGRAM

***********************************************************

Adjustment menu

***********************************************************

Adjustment menu

***********************************************************

Follow the instructions on PC display thereafter.

AIC adjustment complete

[A] DATA INITIALIZE [B] ELECTRIC VOLUME [C] ADJUSTMENT [D] AUTO FOCUS [E] SPOT NOISE [ESC] END

Please select [A] - [F] or [ESC]

Input C.

ADJUSTMENT

[1] AUTO IRIS CONTROL [2] MATRIX [3] WHITE BALANCE [4] CHROMA GAIN [ESC] RETURN TO MAIN MENU

Please select [1] - [3] or [ESC]

ADJUSTMENT

[1] AUTO IRIS CONTROL [2] MATRIX [3] WHITE BALANCE [4] CHROMA GAIN [ESC] RETURN TO MAIN MENU

Please select [1] - [3] or [ESC]

Input 1.

ADJUSTMENT FINISHED

PRESS ANY KEY

Press any key.

7.2 Matrix Adjustment [For TYPE S/SE] (Fig. 7-1)

Incompleted Phenomenon:

Color reproduction becomes defective.

Test Point:

Video Out (PG1601-6)

Equipment/Jig:

Oscilloscope

Conditions:

Point at a color bar chart.

3 - 8

Turn the video camera off.

Adjustment menu

***********************************************************

ADJUSTMENT

[1] AUTO IRIS CONTROL [2] MATRIX [3] WHITE BALANCE [4] CHROMA GAIN [ESC] RETURN TO MAIN MENU

Please select [1] - [3] or [ESC]

Input 2.

+ 32 hidden pages

Hitachi Vks274 Service Manual

Cautions

Notes When Using Service Manual

Contents

CHAPTER 1 GENERAL INFORMATION

1. Specifications

2. Comparison with Previous Model

2.1 Comparison of Specifications

2.2 Comparison of ICs

CHAPTER 2 DISASSEMBLY

1. Procedure

CHAPTER 3 ELECTRIC CIRCUIT ADJUSTMENT

1. Test Equipment/Jigs Necessary for Adjustment

1.1 List of Equipment and Jigs

1.2 List of Charts for Adjustment

1.3 Test Equipment, etc.

2. Before Starting Adjustment

2.1 Connections for Adjustment

2.2 Notes

2.3 Setting Test Equipment

3. List of Adjustment Items

4. Starting Adjustment Program (SMAP)

5. Data Initialize Procedure

5.1 Data Initialize

6. Electronic Volume Adjustment Procedure

6.1 CDS Sampling Pulse Adjustment

7. Camera Adjustment (Adjustment) Procedure

7.1 Auto Iris Control Adjustment