Hitachi vk-s274r Service Manual
TK No. 8302E
VK-S274R/S274ER
SERVICE MANUAL
VK-K274R/K274ER
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
COLOR & B/W VIDEO CAMERA
2003March
Digital Media Division,Tokai
Table of Contents
1 Safety Precaution for Repair ............. 1-1
1-1 Cautions ................................................... 1-1
1-2 Notes When Using Service Manual .......... 1-1
1-2-1 Value units used in parts list .................. 1-1
1-2-2 Values in schematic diagrams ............... 1-1
1-2-3 Identifications of sides A/B in
circuit board diagrams ........................... 1-2
1-2-4 Table for indexing locations of parts ....... 1-2
1-3 Electrostatic Protection Measures ............ 1-3
1-3-1 Grounding for prevention of
electrostatic damage ............................. 1-3
1-3-2 Cautions when handling
optical pickup......................................... 1-3
1-4 Lead-Free Solder...................................... 1-4
1-4-1 Characteristics of lead-free solder ......... 1-4
1-4-2 Solder for servicing................................ 1-4
1-4-3 Soldering iron for servicing .................... 1-4
2 General Description ........................... 2-1
2-1 Overview .................................................. 2-1
2-1-1 Servicing method................................... 2-1
2-2 Features ................................................... 2-1
2-3 Specifications ........................................... 2-2
2-4 Comparison of Main Control ICs............... 2-4
6-1-4 Setting test equipment ........................... 6-3
6-1-5 Starting adjustment program (ZMAP) .... 6-3
6-2 List of Adjustment Items ........................... 6-5
6-2-1 List of adjustments needed after
replacing major...................................... 6-5
6-2-2 Adjustment flowchart ............................. 6-6
6-3 Data Initialize ............................................ 6-7
6-4 Electronic Volume ..................................... 6-7
6-4-1 CDS sampling pulse adjustment............ 6-8
6-5 Adjustment (Camera Adjustment)............. 6-8
6-5-1 Auto iris control adjustment ................... 6-9
6-5-2 White balance adjustment ..................... 6-9
6-5-3 Chroma gain adjustment ....................... 6-10
6-6 Auto Focus ............................................... 6-11
6-6-1 Zoom/focus tracking adjustment ............ 6-11
6-6-2 AF noise level adjustment ...................... 6-12
6-6-3 Check of zoom/focus trace .................... 6-12
6-7 Spot Noise ................................................ 6-13
6-8 Error Messages and Countermeasure ...... 6-14
7 Exploded View and Parts List............ 7-1
7-1 Exploded View .......................................... 7-1
7-2 Replacement Parts List ............................ 7-2
7-2-1 Mechanical parts list .............................. 7-2
7-2-2 Electrical parts list ................................. 7-2
3 Description of Operation ................... 3-1
3-1 Structure Schematics ............................... 3-1
3-2 Microprocessor Pin Function Tables ......... 3-2
3-2-1 Camera microprocessor
(IC1201: Camera µP)............................. 3-2
4 Troubleshooting.................................. 4-1
4-1 Trouble Diagnosis ..................................... 4-1
4-1-1 Setting to service position...................... 4-1
4-1-2 Trouble diagnosis flowchart ................... 4-2
5 Disassembly and Reassembly .......... 5-1
5-1 Order of Disassembly ............................... 5-1
5-2 Disassembly ............................................. 5-1
6 Adjustment .......................................... 6-1
6-1 Preparations for Adjustment ..................... 6-1
6-1-1 List of equipment and jigs ...................... 6-1
6-1-2 List of test equipment and charts ........... 6-1
6-1-3 Connections for adjustment ................... 6-2
Schematic, Circuit Board and Block
Diagrams .................................................... 1
1 Wiring Diagram .............................................. 1
2 Schematic Diagrams ..................................... 2
2-1 Sensor [SP] Schematic Diagram ............... 2
2-2 Process [PC] Schematic Diagram
(For Display) .............................................. 3
2-3 Process [PC] Schematic Diagram
(For Printing) A-a ....................................... 4
2-4 Process [PC] Schematic Diagram
(For Printing) A-b ....................................... 5
2-5 Switching Reg. [CSR] ................................ 6
3 Circuit Board Diagram ................................... 7
3-1 PC Circuit Board Diagram ......................... 7
3-2 SP Circuit Board Diagram.......................... 8
3-3 CSR Circuit Board Diagram ....................... 8
3-9 Identification Parts Location....................... 9
4 Block Diagrams ............................................. 10
4-1 Overall Block Diagram ............................... 10
4-2 Power Block Diagram ................................ 11
1
Safety Precaution for Repair
1-1 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.
1-2 Notes When Using Service Manual
The following shows the contents to be noted when using service manual:
1-2-1 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
k
µF
pF
µH
mH
1-2-2 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] [Capacitors]
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
Item
Value
Dielectric
strength
[Coils]
Item
Value
1 - 1
Indication
No indication
...................................................
P
No indication
(All dielectric strengths other than 50V
are indicated in schematic diagrams)
Indication
....................................................
µ
..................................................
m
.................................
..............................
50V
µF
pF
µH
mH
Safety Precaution for Repair > Notes When Using Service Manual
1-2-3 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.
1-2-4 Table for indexing locations of parts
The table of “Identification of parts location” on circuit board diagrams shows locations of each part
as below explanations. 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.
Parts
Location
Type of part
2 A
Zone "A" on board diagram
Zone "2" on board diagram
2) Two diagrams indicated for each board
Symbol
No.
Parts
Location
IC
IC1201
A: Shows side A
B: Shows side B
A - 2 A
Zone "A" on board
diagram
Zone "2" on board
diagram
1 - 2
Safety Precaution for Repair > Electrostatic Protection Measures
1-3 Electrostatic Protection Measures
Semiconductor components, including optical pickups, may be damaged by static electricity charged
on clothes, human body, etc. Take great care when handling it to avoid electrostatic damage.
1-3-1 Grounding for prevention of electrostatic damage
Perform servicing in an environment where grounding is complete.
Grounding work bench
1) Lay out a conductive material (conductive sheet) or iron plate under the work bench on which
semiconductor components, such as optical pickups, are placed to ground the bench.
Grounding human body
1) Use an anti-static wrist strap to discharge static electricity charged on human body. Note,
however, that static electricity charged on clothes will not be discharged by anti-static wrist
strap: Be careful that your clothes do not touch the semiconductor components, such as optical
pickups.
Conductive material (conductive sheet)
or iron plate
Anti-static wrist strap
1M ohm
Ground
1-3-2 Cautions when handling optical pickup - only for DVD products
1) The optical pickup has a high precision structure: Do not subject it to any impact.
2) Do not perform disassembly further than that described in this manual.
3) Never turn the semi-variable resistors in drive unit block.
1 - 3
Safety Precaution for Repair > Lead-Free Solder
1-4 Lead-Free Solder
To protect the global environment, lead-free solder is used in this product.
Be sure to read the following before soldering.
Caution
Be sure to wear protective goggles so that no solder smoke or scattered solder enters the eye during
servicing. Lead-free solder may scatter at high temperatures (600°C).
1-4-1 Characteristics of lead-free solder
The melting point of lead-free solder is 30-40°C higher than that of lead based solder.
Composition of alloy (wt%): Sn-3.0Ag-0.5Cu
Melting temperature: Approx. 220°C
1-4-2 Solder for servicing
It is recommended that you use lead-free solder whose characteristics are the same as that used in
this product, although it is also possible to service using lead based solder. However, if lead based
solder is used for servicing, some precautions are necessary. (Neglecting these could decrease
strength, causing malfunctions.)
Cautions when using lead based solder:
When replacing components, remove the lead-free solder previously used for soldered points as
far as possible.
For additional soldering, melt lead-free solder completely and mix well with lead based solder.
Never perform repair using the bare soldering iron tip without adding solder.
1-4-3 Soldering iron for servicing
It is recommended that you use a soldering iron with thermal control function, with which the
temperature at its tip can be set.
Lead-free solder melts at a temperature 30-40°C higher than lead based solder. Therefore,
workability will be reduced unless you use a soldering iron whose temperature is high, whose
temperature at tip does not change greatly (heat capacity is large), and that can be set to match the
work points.
Recommended soldering iron:
With thermal control function (temperature setting range: 320-450°C)
Recommended tip temperatures for different work points:
Work point
Circuit board with surface-mounted (chip) parts
Circuit board without surface-mounted (chip) parts
Chassis, metal shield
Recommended tip temperature
320°C ± 30°C
380°C ± 30°C
420°C ± 30°C
1 - 4
2
General Description
2-1 Overview
VK-S274R/S274ER is a color chassis video camera; VK-K274R/K274ER is a Black-and-white chassis
video camera: All these models incorporate an optical 22-power compact zoom lens.
Models VK-S274R/S274ER/K274R/K274ER are successor cameras to VK-S274/S274E/K274/K274E.
The signal process circuit is equipped with a digital signal processor (D.S.P.5) that is the same as
that of VK-S274/S274E/K274/K274E.
The external appearance is identical to VK-S274/S274E/K274/K274E.
2-1-1 Servicing method
Table 2-1-1 shows the method for servicing each circuit board.
Refer to "4 Troubleshooting" for the method of judging defects in each circuit board.
Information:
These servicing methods are subject to change without notice for the purpose of facilitating service
procedures.
PC CIRCUIT
Table 2-1-1 Circuit Board Servicing Method
Circuit board
CSR circuit board
PC circuit board
SP circuit board
Servicing method
Component replacement.
PC CIRCUIT
BOARD
BOARD
SP
CIRCUIT
BOARD
CSR CIRCUIT
BOARD
Fig. 2-1-1 Locations of Circuit Boards
2-2 Features
Built-in Optical Power Zoom Lens
A highly reliable optical 22-power zoom lens is mounted, and it is equipped with auto-focus and auto
iris functions.
12-Power Digital Zoom Function
The 12-power digital zoom, combined with the 22-power optical zoom, makes possible up to 264power zooming.
Remote Control via RS-232C
Focus, iris and zoom can be remotely operated via RS-232C.
External Synchronization with AC-Line Pulse Signal
This chassis camera is compatible with external sync using AC-line pulse signal, as well as with
internal sync.
2 - 1
General Description > Specifications
2-3 Specifications
The specifications in shaded columns are different from those of previous models.
Design and specifications are subject to change without notice.
Item
Signal Format
Scanning System
Scanning
Frequency
Image Sensor
Lens
Signal Processing
Sync. System
Camera
Functions
(Control
through
RS-232C)
Horizontal
Vertical
Total Pixels
Effective Pixels
Angle of View
Min. Distance
Optical Zoom
Digital Zoom
Video Focus
White Balance
Shutter Speed
Auto (Pro-AE)
Auto (Pro-AE+)
Manual
*: Default settings
VK-S274R/S274ER
VK-K274R/K274ER
VK-S274R: NTSC
VK-K274R: EIA B/W
VK-S274ER: PAL
VK-K274ER: CCIR B/W
2:1 Interlacing
VK-S274R/K274R: 15.734 kHz
VK-S274ER/K274ER: 15.625 kHz
VK-S274R/K274R: 59.94 Hz
VK-S274ER/K274ER: 50 Hz
1/4-inch CCD
VK-S274R/K274R:
811 (H) × 508 (V), 410k
VK-S274ER/K274ER:
795 (H) × 596 (V), 470k
VK-S274R/K274R:
768 (H) × 494 (V), 380k
VK-S274ER/K274ER:
752 (H) × 582 (V), 440k
F1.6 f = 4 - 88 mm, High Durability
×22 Zoom Lens, Video Auto Focus
Horizontal 47°(Wide), 2.2°(Tele)
1.0m (Tele), 0.01m (Wide)
Digital Signal Processor (D.S.P. 5)
Internal/External
TELE-WIDE (Zoom speed: 3.9s*/6.3s)
Off*/On (Up to 12×)
Auto*/Manual (NEAR-FAR/Fix)
Auto*/Manual (Red/Blue Gain: UPDOWN/Fix)
VK-S274R/K274R: 1/60 - 1/4000s
VK-S274ER/K274ER: 1/50 - 1/4000s
VK-S274R/K274R:
1/2 - 1/4* - 1/4000s
VK-S274ER/K274ER:
1/1.5 - 1/3* - 1/4000s
VK-S274R/K274R:
Shutter (1/2 - 1/4000s)/
Exposure (F1.6 - F34)/
AGC priority (0 - 27dB)
VK-S274ER/K274ER:
Shutter (1/1.5 - 1/4000s)/
Exposure (F1.6 - F34)/
AGC priority (0 - 27dB)
VK-S274: NTSC
VK-K274: EIA B/W
VK-S274E: PAL
VK-K274E: CCIR B/W
2:1 Interlacing
VK-S274/K274: 15.734 kHz
VK-S274E/K274E: 15.625 kHz
VK-S274/K274: 59.94 Hz
VK-S274E/K274E: 50 Hz
1/4-inch CCD
VK-S274/K274:
VK-S274E/K274E:
VK-S274/K274:
VK-S274E/K274E:
F1.6 f = 4 - 88 mm, High Durability
×22 Zoom Lens, Video Auto Focus
Horizontal 47°(Wide), 2.2°(Tele)
1.0m (Tele), 0.01m (Wide)
Digital Signal Processor (D.S.P. 5)
Internal/External
TELE-WIDE (Zoom speed: 3.9s*/6.3s)
Off*/On (Up to 12×)
Auto*/Manual (NEAR-FAR/Fix)
Auto*/Manual (Red/Blue Gain: UPDOWN/Fix)
VK-S274/K274: 1/60 - 1/4000s
VK-S274E/K274E: 1/50 - 1/4000s
VK-S274/K274:
VK-S274E/K274E:
VK-S274/K274:
VK-S274E/K274E:
VK-S274/S274E
VK-K274/K274E
811 (H) × 508 (V), 410k
795 (H) × 596 (V), 470k
768 (H) × 494 (V), 380k
752 (H) × 582 (V), 440k
1/2 - 1/4* - 1/4000s
1/1.5 - 1/3* - 1/4000s
Shutter (1/2 - 1/4000s)/
Exposure (F1.6 - F34)/
AGC priority (0 - 27dB)
Shutter (1/1.5 - 1/4000s)/
Exposure (F1.6 - F34)/
AGC priority (0 - 27dB)
2 - 2
General Description > Specifications
Item VK-S274R/S274ER
Camera
Functions
(Control
through
RS-232C)
Sensitivity
Horizontal Resolution
Luminance S/N
Video output
Supplied Voltage
Power Requirement
Operating Temperature
Operating Humidity
Dimensions
Weight
Mirror
Mosaic
Iris Control
Privacy Zone
Masking
Freeze
Extrenal Sync.
Communication
Speed of RS-232C
Position Preset
*: Default settings
VK-K274R/K274ER
Off*/On
Off*/On
*
Auto
Off/On* (2 zone 2-D/8 zone 3-D)
Off*/On
Off*/On
Selective (4.8k*/9.6k/19.2k/38.4/57.6k
bps)
No-Trace preset/Trace preset
(Memory: max. 64 position)
VK-S274R/S274ER:
1.0 lx (Pro-AE: 1/60s or 1/50s,
F1.6, 27dB)
0.06 lx (Pro-AE+: 1/4s)
VK-K274R/K274ER:
0.1 lx (Pro-AE: 1/60s or 1/50s,
F1.6, 27dB)
0.01 lx (Pro-AE+: 1/4s)
VK-S274R: More than 470 TV lines
VK-S274ER: More than 460 TV lines
VK-K274R/K274ER:
More than 500 TV lines
More than 50dB
VK-S274R/S274ER:
Composite: 1.0 ± 0.2Vp-p
VK-K274R/K274ER:
Y (Luminance): 1.0 ± 0.2Vp-p
9 V - 12 V DC ± 0.5 V
3.65 W (When suppling 9 V DC)
0 - 60° (Recommended: 0 - 40°)
10 - 90%
50 (W) × 60 (H) × 89.5 (D) mm
Approx. 222g
VK-S274/S274E
VK-K274/K274E
Off*/On
Off*/On
*
Auto
Off/On* (2 zone)
Off*/On
Off*/On
Fixed (4.8k bps)
----------
VK-S274/S274E:
1.0 lx (Pro-AE: 1/60s or 1/50s,
F1.6, 27dB)
0.1 lx (Pro-AE+: 1/4s)
VK-K274/K274E:
0.1 lx (Pro-AE: 1/60s or 1/50s,
F1.6, 27dB)
0.01 lx (Pro-AE+: 1/4s)
VK-S274: More than 470 TV lines
VK-S274E: More than 460 TV lines
VK-K274/K274E:
More than 500 TV lines
More than 50dB
VK-S274/S274E:
Composite: 1.0 ± 0.2Vp-p
VK-K274/K274E:
Y (Luminance): 1.0 ± 0.2Vp-p
9 V DC ± 0.5 V
3.3 W (When suppling 9 V DC)
0 - 60° (Recommended: 0 - 40°)
10 - 90%
50 (W) × 60 (H) × 89.5 (D) mm
Approx. 225g
2 - 3
General Description > Comparison of Main Control ICs
2-4 Comparison of Main Control ICs
The comparison of main control ICs in shaded columns are different from those of previous models
Item
Image Sensor
Sensor Drive
CDS/AGC & A/D Conv.
Camera DSP
DRAM
Inv.
Clock Gen.
Camera µP
EEPROM
Reset Pulse Gen.
Zoom Motor Drive
Focus Motor Drive
F.DET./Iris Drive
PWM
7.2V Reg.
Y/C Mix & Video Amp
Level Shift
VCO/Phase Compa.
FV Pulse Gen.
VK-S274R/S274ER
VK-K274R/K274ER
VK-S274R: ICX278AK-L (IC1001)
VK-S274ER: ICX279AK-L (IC1001)
VK-K274R: ICX278AL-7 (IC1001)
VK-K274ER: ICX279AL-7 (IC1001)
µPD16510GR (IC1002)
HD49323AF (IC1101)
HG73C053FE (IC1121)
IC41LV16100S-50G (IC1122)
TC7SU04FU (IC1173)
TC7SHU04FUL (IC1174)
HD6432238RN41FA (IC1201)
BR9016RFV (IC1202)
BR9016RFV (IC1203)
NC7SZ14P5 (IC1204)
NC7SZ14P5 (IC1205)
SN74AHC1G08HDCK (IC1206)
RN5VD27AA (IC1251)
TB6512AF (IC1301)
TB6512AF (IC1302)
µPC5023GS-147-GJG (IC1351)
TL1464IPT (IC1501)
PQ20WZ51 (IC1502)
BA7665FS (IC1601)
SN74AHCT125PW (IC1602)
74VHC4046MTCX (IC1603)
SN74AHC1G08HDCK (IC1604)
VK-S274/S274E
VK-K274/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)
HD6432238RN30FA (IC1201)
X25097V1-2.7 (IC1202)
TC7SH14FU (IC1204)
TC7SH14FU (IC1205)
TC7S08FU (IC1206)
RN5VD27AA (IC1203)
MPC17AT85VM (IC1301)
MPC17AT85VM (IC1302)
µPD5023GS-147-GJG (IC1351)
TL1464IPT (IC1501)
---------BA7664FV (IC1601)
HD74HCT125T (IC1602)
74VHC4046MTCX (IC1603)
IDC-7S08 (IC1604)
2 - 4
3
Description of Operation
3-1 Structure Schematics
0
16Ø32.2mm
24mm
53mm
4 - M2 SCREWS for
TRIPOD PLATE
(These screws are limit of height
keep as being less than 2 mm for "A")
13.5mm33mm
50mm
4 - M2 SCREWS
25mm
90˚
Ø50m
m
30mm
60mm
12.5mm
16mm
89.5mm
77mm
8
0
24mm
4 - M2 SCREWS for
53mm
TRIPOD PLATE
(These screws are limit of height
keep as being less than 2 mm for "A")
M2 SCREW
0.8mm
CHASSIS
M2 SCREW
Fig. 3-1-1 Structure Schematics
3 - 1
A
Description of Operation > Microprocessor Pin Function Table
3-2 Microprocessor Pin Function Table
3-2-1 Camera microprocessor (IC1201: Camera µP)
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
I/O
O
O
O
O
-----
----O
O
O
O
O
-----
I
----O
O
O
I
O
-----
-----
I
-----
I
----O
O
O
----O
-----
----O
O
O
O
O
Active
Level
(Pulse)
(Pulse)
(Pulse)
Hi
(Pulse)
(Pulse)
(Pulse)
(Pulse)
(Pulse)
-----
Hi/Lo
-----
Hi/Lo
(Pulse)
Hi
(Pulse)
-----
-----
-----
0V-3V
----
0V-3V
----Hi
Hi
(Pulse)
-----
(Pulse)
-----
-----
(Pulse)
Hi/Lo
(Pulse)
(Pulse)
-----
Abbreviation
LD-DSP
CS-DAC
CS-VAP
GYRO-RST
CEON
CHARGE
RDOEB
ZDOEB
RDCK
ZDCK
IRDCK
VCC1
LINE-SW
GND1
IRDCW
IROREB
IR-RESET
IR-SENS
IR-LED
NC1
TST-PIN1
H-VAP
TST-PIN0
V-VAP
CHECK8
ZD-RESET
RD-RESET
IRIS-PWM
LD-JIG
ZOOM-LED
TXD2
RXD2
FCUS-LED
ZDCW
RDCW
ZD-PWMA
RD-PWMA
Function
Activates data communication with IC1121 (CAMERA DSP).
Not used. Open.
Activates focus drive data communications with IC1302 (FOCUS
MOTOR DRIVE).
Activates zoom drive data communications with IC1301 (ZOOM
MOTOR DRIVE).
Outputs focus motor drive signal to IC1302 (FOCUS MOTOR DRIVE).
Outputs zoom motor drive signal to IC1301 (ZOOM MOTOR DRIVE).
Not used. Open.
3V power input.
External sync detection input. When "Hi" is input, the unit will be
driven in the external sync mode; when "Lo" is input, it will be driven
in the internal sync mode.
Ground.
Not used. Open.
Not used. Open.
Resets IC1301 (ZOOM MOTOR DRIVE).
Resets IC1302 (FOCUS MOTOR DRIVE).
Iris motor drive output .
Not used. Open.
Output pulses to drive the ZOOM LED in the lens block via Q1201
(LED DRIVE).
Not used.
Output pulses to drive the FOCUS LED in the lens block via Q1201
(LED DRIVE).
Issues a command which determines with IC1301 (ZOOM MOTOR
DRIVE).
Issues a command which determines with IC1302 (FOCUS MOTOR
DRIVE).
Not used. Open.
3 - 2
Description of Operation > Microprocessor Pin Function Table
Pin
No.
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
I/O
I
I
----I
-----
O
O
I
I
I
I
I
I
I
I
-----
-----
-----
-----
-----
----I
-----
-----
----I
-----
O
I
I
-----
O
-----
----I
-----
----I
O
I
I
Active
Level
(Pulse)
(Pulse)
-----
(Pulse)
----0V-3V
0V-3V
0V-5V
0V-3V
0V-3V
0V-3V
0V-3V
0V-3V
0V-3V
0V-3V
-----
-----
-----
-----
-----
-----
Lo
-----
-----
-----
(Pulse)
------
(Pulse)
Lo
Hi
-----
Hi
-----
-----
(Pulse)
-----
-----
(Pulse)
(Pulse)
(Pulse)
(Pulse)
Abbreviation Function
FV
FCUS-SEN
NC2
ZOOM-SEN
GND2
HAL-ADJ1
HAL-ADJ0
5V_DET
ZOOM-SW
FOCUS-SW
+B_DET
TEMP-ADJ
V-GYRO
H-GYRO
FDET
AVCC1
AVCC2
VCC2
VCC3
NC4
NC5
SYS-REST
VCC4
STBY
VCC5
XTAL
GND3
EXTAL
FWE
MD2
NC6
HALL-G
NC7
NC8
HD
SHUT-CTL
STROBE
FP
SD[232C]
RD[232C]
EP3
Receives the vertical sync pulses that detect the iris detection area,
from IC1121 (CAMERA DSP).
Focus motor position detection input.
Not used. Open.
Zoom motor position detection input.
Ground.
Controls the offset voltage of IC1351 (F.DET/IRIS DRIVE).
Drives bias generator in IC1351 (F.DET/IRIS DRIVE) via Q1351
(BIAS DRIVE) to control the bias voltage of the Hall devices.
DC5V detection input. Monitors the 5V line voltage.
Not used.
Power voltage (+B) detection input. Monitors the +B line voltage.
Temperature change detection input. Detects variations in the
forward voltage at the connected diode to correct the back-focus.
Not used. Connect to ground.
F-value detection input. Receives the F.DET voltage detected by
IC1351 (F.DET/IRIS DRIVE) and compares this with the reference
voltage input via pin 53 to detect the F-value.
Reference 3V power input.
A/D reference voltage input (connected to 3V power supply).
3V power input.
Not used. Open.
Not used. Connect to ground.
Reset signal input from IC1206 (RESET PULSE GEN.).
3V power input.
Not used. Connect to 3V power supply.
3V power input.
Not used. Open.
Grounded.
Inputs controk pulses from IC1211 (CAMERA DSP).
Not used.
Not used. Open.
Controls the amplification (gain of Hall device) of IC1351 (F.DET/IRIS
DRIVE).
Not used. Open.
Inputs horizontal sync from IC1121 (CAMERA DSP).
Not used. Open.
Inputs field discrimination pulse from IC1121 (CAMERA DSP).
Used for initial settings and adjustment. For data communications
with personal computer.
Receives pulses which discriminate the iris detection area.
3 - 3
Description of Operation > Microprocessor Pin Function Table
Pin
No.
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
-----
-----
-----
----O
I
O
-----
-----
I
-----
I
-----
-----
-----
----O
O
O
O
O
O
Active
Level
-----
-----
-----
----(Pulse)
(Pulse)
(Pulse)
-----
----(Pulse)
-----
Hi/Lo
-----
-----
-----
-----
Hi/Lo
(Pulse)
(Pulse)
(Pulse)
(Pulse)
(Pulse)
Abbreviation Function
NC9
NC10
NC11
NC12
SDO
SDI
SCLK
DC-LIGHT
NC13[1]
4800SET
LIGHT-SW
COLOR/BW
NC13[2]
F-DIAL1
F-DIAL2
LIGHT-0
STBY_5V
CLK-CDS
SDO-CDS
CS-CDS
CS-EE[1]
CS-EE[2]
Not used. Open.
For data communications with IC1121 (CAMERA DSP), IC1202
(EEPROM), IC1203 (EEPROM).
Not used. Open.
Not used.
Not used. Open.
Color model and B/W model select input. (Hi: Color model/Lo: B/W
model)
Not used. Open.
5V regulator control output. (Hi: On/Lo:Off)
Transfer data to IC1101 (CDS/AGC & A/D CONV. ).
Activates data communications with IC1101 (CDS/AGC & A/D
CONV. ).
Activates data communications with IC1202 (EEPROM).
Activates data communications with IC1203 (EEPROM).
3 - 4
4
Troubleshooting
4-1 Trouble Diagnosis
4-1-1 Setting to service position
Remove chassis R and chassis L, referring to “5. Disassembly and Reassembly”, and connect the
camera as shown in Fig. 4-1-1.
Note:
To prevent short-circuit, always perform trouble diagnosis of camera on insulated mat.
PC CIRCUIT
BOARD
SP CIRCUIT
BOARD
CSR CIRCUIT
BOARD
PG1601
DSP INTERFACE CONNECT JIG
(Parts No. 7069179)
1
RD WHT
2
SD BRW
3
GND BRW
4
+B BRW
5
GND BRW
6
VIDEO BRW
7
GND(VIDEO) BRW
8
EX. FV BRW
9
GND BRW
DC POWER
SUPPLY
(9V/3A)
+
GND
Fig. 4-1-1 Connections for Trouble Diagnosis
9PIN FLAT CABLE
(ACCESSORY)
9
1
2345
1
6
78
COLOR MONITOR
9
VIDEO IN
4 - 1
Troubleshooting > Trouble Diagnosis
4-1-2 Trouble diagnosis flowchart
(1) No video (luminance) signal
The test lands and components of circuit no. 1000-1099 are
on the SP circuit board.
The test lands and components of circuit no. 1100-1499 are
on the PC circuit board.
The test lands and components of circuit no. 1500 and higher
are on the CSR circuit board.
OK
NG
Refer to "(3) No power"TL1539 : 5V
TL1540 : 3V
OK
TL1532 : 2V
OK
TL1533 : 15V
OK
TL1534 : -7.5V
OK
TL1522 : 7.2V
OK
TL1529 :
Luminance signal
OK
IC1601 faulty
NG
Refer to "(3) No power"
NG
Refer to "(3) No power"
NG
Refer to "(3) No power"
NG
Refer to "(3) No power"
NG
Refer to "(3) No power"
NG
CCD output signal
CCD output signal
TL1013 :
OK
IC1101-27 :
OK
NG
1
C1101 faulty or connect
NG
the connections of circuit
boards.
IC1101-43, 44, 45 :
Pulses
OK
IC1101-16, 17,
18, 19 : Pulses
OK
IC1101-2 to 11:
Pulses
OK
IC1121-66:
Luminance signal
OK
Q1152 faulty.
NG
NG
NG
NG
IC1201 faulty.
IC1121 faulty.
IC1101 faulty.
TL1154: 3V
IC1121 faulty.
4 - 2
OK
NG
Q1151 or D1151 faulty.
Troubleshooting > Trouble Diagnosis
1
TL1082, 1083,
1085, 1086 :
Pulses
OK
TL1236, 1238,
1240 : Pulses
OK
IC1001-7 :
CCD output signal
OK
Q1001 faulty.
NG
NG
NG
TL1016, 1017,
1019 : Pulses
OK
TL1018, 1020,
1024 : Pulses
OK
IC1002 faulty.
IC1121 faulty.
IC1001 faulty.
IC1121 faulty or connect
NG
the connections of circuit
boards..
IC1121 faulty or connect
NG
the connections of circuit
boards..
(2) No chroma signal [For VK-S274R/S274ER]
The test lands and components of circuit no. 1000-1099 are
Luminance
signal
TL1530 :
Chroma signal
IC1601-7 :
Chroma signal
IC1601 faulty.
OK
OK
OK
NG
Refer to "(1) No video
(luminance) signal"
NG
NG
Q1605 faulty.
on the SP circuit board.
The test lands and components of circuit no. 1100-1499 are
on the PC circuit board.
The test lands and components of circuit no. 1500 and higher
are on the CSR circuit board.
Chroma signal
IC1121 faulty.
IC1121-65 :
NG
TL1154 : 3V
OK
OK
Q1153 faulty.
NG
Q1151 or D1151 faulty.
4 - 3
Troubleshooting > Trouble Diagnosis
(3) No power
Check fuse
(F1501)
OK
TL1609 : 9V (+B)
OK
TL1535 : 9V (+B)
OK
TL1539 : 5V
OK
TL1540 : 3V
NG
NG
NG
NG
NG
Fuse replacement
D1601 faulty
CP1601 faulty
IC1501-44 : 8V
OK
Q1501 faulty
IC1501-35 : 8V
The test lands and components of circuit no. 1000-1099 are
on the SP circuit board.
The test lands and components of circuit no. 1100-1499 are
on the PC circuit board.
The test lands and components of circuit no. 1500 and higher
are on the CSR circuit board.
NG
IC1501 faulty
NG
IC1501 faulty
OK
TL1532 : 2V
OK
TL1533 : 15V
OK
TL1534 : -7.5V
NG
OK
Q1502 faulty
NG
NG NG
OK
IC1501-2 : 8V
OK
Q1503 faulty
TL1534 : -7.5V
OK
D1501 faulty
TL1522 : 7.2V
OK
NG
NG
IC1501 faulty
Q1504 faulty
IC1502 faulty
OK
NG
IC1501 faulty IC1501-41 : 8V
D1503 faulty
Correct the connections
of circuit boards
4 - 4
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