Hitachi Vks454 Service Manual
TK No. 8101E
VK-S454
SERVICE MANUAL
VK-S454E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
COLOR VIDEO CAMERA
2001January
Digital Media Products Division,Tokai
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.
!
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Confidential unpublished works.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) 1992-2001 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
................................................
UF
................................................
PF
................................................
UH
...............................................
MH
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
...................................................
K
..................................................
M
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
k
M
k
µF
pF
µH
mH
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.
IC
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
Indication
No indication
...................................................
P
No indication
(All dielectric strengths other than 50V
are indicated in schematic diagrams)
Indication
....................................................
µ
..................................................
m
.................................
..............................
µF
pF
50V
µH
mH
Symbol
No.
IC
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
CAUTION-2
CONTENTS
CHAPTER 1 GENERAL INFORMATION
SPECIFICATIONS .................................................. 1-1
COMPARISON OF SPECIFICATION ..................... 1-2
COMPARISON OF MAIN CONTROL ICs .............. 1-2
CHAPTER 2 DISASSEMBLY
DISASSEMBLY PROCEDURE .............................. 2-1
CHAPTER 3
1. Test Equipment/Jigs Necessary for
Adjustment ...................................................... 3-1
1.1 List of equipment and jigs ....................................... 3-1
1.2 List of charts for Adjustment ................................... 3-1
1.3 Test equipment, etc. ................................................ 3-1
2. Before Starting Adjustment ............................ 3-2
2.1 Connections for adjustment .................................... 3-2
2.2 Notes....................................................................... 3-2
2.3 Setting test equipment ............................................ 3-3
3. List of Adjustment Items................................. 3-4
4. Starting Adjustment Program (SMAP) ........... 3-5
5. Adjustment Procedure .................................... 3-6
5.1 Data initialize .......................................................... 3-6
(1) Data initialize ..................................................... 3-6
5.2 Electronic Volume ................................................... 3-6
(1) CDS Sampling Pulse Adjustment ...................... 3-6
5.3 Adjustment .............................................................. 3-7
(1) Auto Iris Control Adjustment.............................. 3-7
(2) White Balance Adjustment ................................ 3-7
(3) Chroma Gain Adjustment .................................. 3-8
5.4 Autofocus ................................................................ 3-9
(1) Zoom/Focus Tracking Adjustment ..................... 3-9
(2) AF Noise Level Adjustment ............................... 3-9
(3) Check of Zoom Track ....................................... 3-10
5.5 Spot Noise ............................................................ 3-10
(1) Spot Noise Adjustment .................................... 3-10
5.6 IR Control .............................................................. 3-11
(1) IR Control Adjustment ..................................... 3-11
6. Error Message................................................ 3-12
6.1 Error Message of Electrical Volume and
Adjustment ............................................................ 3-12
6.2 Error Message of Autofocus ................................. 3-13
7.3 Error Message of Spot Noise................................ 3-13
7.4 Error Message of IR Control ................................. 3-13
7. Troubleshooting of Autofocus ...................... 3-14
(1) No zoom and focus operation ............................... 3-14
(2) No focus lens operation ........................................ 3-16
(3) No zoom operation................................................ 3-17
(4) No autofocus operation......................................... 3-18
(5) Subject is greatly out-of -focus when zoomed ...... 3-19
ELECTRIC CIRCUIT
ADJUSTMENT
8. Troubleshooting of IR control....................... 3-19
(1) No IR control operation ......................................... 3-20
CHAPTER 4 EXPLODED VIEW
EXPLODED VIEW .................................................. 4-1
CHAPTER 5
MECHANICAL PARTS ........................................... 5-1
ELECTRICAL PARTS ............................................ 5-2
REPLACEMENT
PARTS LIST
SCHEMATIC, CIRCUIT
BOARD AND BLOCK
CHAPTER 6 DIAGRAMS/MICRO-
PROCESSOR PIN
FUNCTION TABLE
INTERNAL WIRING DIAGRAM ............................. 6-1
SCHEMATIC / CIRCUIT
BOARD
SENSOR [SP] .................................... 6-3 / 6-13
PROCESS [PC].................................. 6-5 / 6-11
SWITCHING REGULATOR [CSR] ..... 6-8 / 6-14
WAVEFORMS ........................................................ 6-2
BLOCK DIAGRAMS ............................................ 6-15
MICROPROCESSOR PIN FUNCTION TABLE .... 6-17
CONTENTS
CHAPTER 1 GENERAL INFORMATION
SPECIFICATINOS
Note: The specifications are subject to change for improvement without notice.
Signal VK-S454: NTSC Format
VK-S454E: PAL Format
Scanning System 2:1 Interlaced
Image Sensor 4.5 mm Dia. (1/4-inch) CCD Image Sensor
Number of Effective Pixels VK-S454: 724 (H) × 494 (V)
VK-S454E: 724 (H) × 582 (V)
Total Number of Pixels VK-S454: 758 (H) × 504 (V)
VK-S454E: 758 (H) × 592 (V)
Scanning Frequency VK-S454: Horizontal 15.734 kHz
Vertical 59.94 Hz
VK-S454E: Horizontal 15.625 kHz
Vertical 50 Hz
Video Signal Output Composite Signal 1.0 Vp-p
Minimum Required Illumination Standard 3.0 lx
DS shutter 0.2 lx
IRcf OFF 0.02 lx
S/N Ratio 50 dB or more
Horizontal Resolution 470 TV Line or more
Operating Temperature 0 - 60 °C
Operating Humidity 10 - 90 %
Power Input DC 9 V ± 0.5 V
Power Consumption 4.6 W or less
Dimensions 50 (W) × 60 (H) × 89.5 (D) mm
Weight Approx. 230 g
1 - 1
COMPARISON OF SPECIFICATION
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-S454/VK-S454E
VK-S454: NTSC
VK-S454E: PAL
DC 9 V
4.6 W (MAX)
50 × 60 × 89.5
Approx. 230 g
Power zoom × 23 (3.6 - 82.8 mm)
F 1.6 - 3.7
0 °C to 60 °C
(Recommendation: 0 °C to 40 °C)
10 % to 90 %
4.5mm Dia. (1/4 inch) CCD
VK-S454: 724 (H) × 494 (V)
VK-S454E: 724 (H) × 582 (V)
VK-S454: 758 (H) × 504 (V)
VK-S454E: 758 (H) × 592 (V)
2:1 Interlaced
VK-S454: 15.734 kHz
VK-S454E: 15.625 kHz
VK-S454: 59.94 Hz
VK-S454E: 50 Hz
Internal/External
Composite Signal 1.0 Vp-p
50 dB or more
470 TV Line or more
3.0 lx
Provided
VK-S234/VK-S234E
VK-S234: NTSC
VK-S234E: PAL
3.3 W (MAX)
Power zoom × 22 (4.0 - 88.0 mm)
F 1.6 - 3.8
VK-S234: 768 (H) × 494 (V)
VK-S234E: 752 (H) × 582 (V)
VK-S234: 811 (H) × 508 (V)
VK-S234E: 795 (H) × 596 (V)
VK-S234: 15.734 kHz
VK-S234E: 15.625 kHz
VK-S234: 59.94 Hz
VK-S234E: 50 Hz
VK-S234: 470 TV Line or more
VK-S234E: 460 TV Line or more
Not Provided
COMPARISON OF MAIN CONTROL ICs
ITEM
CCD Sensor
Sensor Drive
Buf. Amp
CDS AGC & A/D CONV.
Camera Digital Signal Processor (DSP)
SD RAM
Inv.
Clock Generator
Digital µP
EEPROM
Reset Pulse Gen.
Zoom Motor Drive
Focus Motor Drive
IR Filter Drive
F.Det./Iris Drive
PWM
Y/C Mix. & Video Amp
Level Shift
VCO/Phase Compa.
FV Pulse Gen.
Inv.
NTSC/PAL Switch
1 - 2
VK-S454: ICX216AN (IC1001)
VK-S454E: ICX217AN (IC1001)
µPD16510GR (IC1002)
HD74AC244 (IC1003)
HD49325BHF (IC1101)
HG75C015ABT (IC1121)
µPD456323G5-A10BL-9JH (IC1150)
TC7SHU04FU (IC1171)
MJU6321P (IC1173)
VK-S454 Series µP (IC1201)
X25097V1-2.7 (IC1250)
RN5VD27AA (IC1251)
TC7S08FU (IC1206)
MPC17AT85VMEL (IC1301)
MPC17AT85VMEL (IC1302)
MPC17AT85VMEL (IC1380)
µPD5023GS-147-GJG (IC1351)
TL1464IPT (IC1501)
BA7664FV (IC1601)
HD74HCT125T (IC1602)
74VHC4046MTCX (IC1603)
TC7S08 (IC1604)
TC7SHU04FU (IC1605)
NJM2533V (IC1606)
VK-S454/VK-S454E
VK-S234/VK-S234E
VK-S234: ICX208AK (IC1001)
VK-S234E: ICX209AK (IC1001)
Not provided
HD49323AF (IC1101)
HG73C053FE (IC1121)
MSM51V18165BSL-6TS-K (IC1122)
TC7SU04F (IC1173)
TC7SU04F (IC1174)
HD6432237M09TE (IC1201)
X25097V1-2.7 (IC1202)
RN5VD27AA (IC1203)
Not provided
Not provided
Not provided
CHAPTER 2 DISASSEMBLY
PROCEDURE
C
LENS
BLOCK
BRACKET-R
(5)
REMOVE
ONE
SCREW
A
RUBBER
CRYSTAL
FILTER
D
(4)
DISCONNECT
TWO FLAT
CABLES (*1)
(9)
UNSOLDER
FOURTEEN
POINTS
CCD
SENSOR
A
BRACKET
PC CIRCUIT
BOARD
B
D
C
SP CIRCUIT
BOARD
(8)
REMOVE
TWO
SCREWS
(7)
(6)
REMOVE
ONE
SCREW
REMOVE
TWO
SCREWS
(*2)
CSR
CIRCUIT
BOARD
(2)
REMOVE
TWO
SCREWS
(10)
REMOVE
THREE
SCREWS
(1)
(1)
(1) Release the lock of the connector
on the left and right.
(2) Pull out the flat cable
(2)
Fig. 2-1-1
(1)
B
REMOVE
TWO
SCREWS
Fig. 2-1
(3)
REMOVE
TWO
SCREWS
BRACKET-L
*1: 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. 2-1-1.
*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 (
*1
)
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
*1
: 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.
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) The adjustment program will not operate normally unless the video camera, PC and test equipment/jigs are all turned on.
3) 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.
LIGHT
BOX
DC POWER
SUPPLY
(9V/3A)
+
GND
DC POWER
SUPPLY
(5V/1A)
VIDEO CAMERA
PG1601
DSP INTERFACE CONNECT JIG
1
RD WHT
2
SD BRW
3
GND BRW
4
+B BRW
5
GND BRW
6
VIDEO OUT BRW
7
GND BRW
8
EX. FV BRW
9
GND BRW
YEL
RED
9PIN FLAT CABLE
(ACCESSORY)
9
1
2345
1
6
78
WHT
BLK
COLOR VIDEO
MONITOR
9
VIDEO IN
PERSONAL
COMPUTER
3 - 2
GND
+
BLK
DSP-R JIG
PERSONAL
COMPUTER
CABLE (RS-232C)
Fig. 2-1
4) 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.
5) 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
Name of Major Components
Item of Adjustment
Data Initialize
(1) Data Initialize (*2)
Electric Volume
(1) CDS Sampling
Pulse
Adjustment
(1) Auto Iris Control
(2) White Balance
(3) Chroma Gain
Autofocus
(1) Zoom/Focus
Tracking
(2) AF Noise Level
(3) Check of Zoom
Trace
Spot Noise
(1) Spot Noise
IR Control
(1) IR Control
Purpose of Adjustment
Initilizing EEPROM.
To suppress noise in the CCD sensor
output signal and maximize the signal
level.
To set the iris control data.
To input the automatic wihite balance
control data.
To set the color saturation under the
reference color temperature.
To set the out-of -focus correction level
during zooming.
To set the noise level in the autofocus
circuit.
To check the autofocus adjustment.
To correct spot noise.
To set the IR filter control data.
PC circuit
SP circuit
board
IC1001
board (*1)
IC1101
IC1201
IC1250 (*1)
IC1351
Lens Block
*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 - 4
4. Starting Adjustment Program (SMAP)
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
[F] IR CONTROL
[ESC] END
Please select [A] - [F] or [ESC]
Note: If error message appears during adjustment, refer to “6. 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)
R
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:. (*3) (See the MS-DOS screen)
6) Type SMAP_IBM (space) 1. (*4) (See the SMAP input screen)
R
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 no.
*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.
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.
PC Display & Figs
MS-DOS screen
C>A:
A>
SMAP input screen
C>A:
A>SMAP_IBM 1
Model select screen
***********************************************************
***********************************************************
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]
Screen for verifying model name
Selected model is ЧЧЧЧЧЧЧЧ
Are you sure ? (Y/N)
Main menu
Misoperation message
3 - 5
5. Adjustment Procedure
The following explains the adjustment procedure using the adjustment program (SMAP), following the order of items on the
main menu screen.
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 “6. Error Messages”.
5.1 Data Initialize
(1) Data Initialize
This procedure initializes the data in EEPROM (including the adjustment data). Any time you replace the PC circuit board
(containing 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.
5.2 Electronic Volume
Before starting:
1) Input B to PC on the main menu screen to display the electronic volume 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.
(1) CDS Sampling Pulse Adjustment
Incompleted Phenomenon:
Diagonal beats and horizontal noise occure.
Procedure:
1) Input 1 to PC on the adjustment menu screen.
2) Follow the instruction on PC display thereafter.
PC Display & Figs
Main menu Screen for verifying initialization
***********************************************************
MANUAL ADJUSTMENT PROGRAM
***********************************************************
[A] DATA INITIALIZE
[B] ELECTRIC VOLUME
[C] ADJUSTMENT
[D] AUTO FOCUS
[E] SPOT NOISE
[F] IR CONTROL
[ESC] END
Please select [A] - [F] or [ESC]
<< DATA WRITING >>
START TO SEND DATA. (Y/N)
3 - 6
Electronic volume menu
***********************************************************
***********************************************************
ELECTRIC VOLUME
[1] CDS SAMPLING PULSE
[ESC] RETURN TO MAIN MENU
Please select [1] or [ESC]
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