Hitachi Vkc212e Service Manual

SERVICE MANUAL

TK No. 8201E

VK-C212E VK-M212E

Servicing Method

With VK-C212E and VK-M212E, electrical parts, including semiconductors, resistors, capacitors, etc., are not assigned as service parts: Replace the entire circuit board assembly.

Contents included:

The contents included in this service manual are as follows, based on the above servicing method:

Item Contents included Remarks

Electrical adjustment Not included No adjustment is necessary

when circuit boards are replaced Schematic and circuit Diagrams for reference board diagrams

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

COLOR & B/W VIDEO CAMERA

2002March

Digital Media Products Division,Tokai

CHAPTER 1 GENERAL INFORMATION

1. Specifications

2. Comparison of Specifications/ Functions with Previous Model

3. Description of Functions

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

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

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

1-1

1-2 1-3

CHAPTER 2 DISASSEMBLY

Procedure

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

2-1

CHAPTER 3 EXPLODED VIEW

Overall

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

3-1

CHAPTER 4 REPLACEMENT

PARTS LIST

Mechanical Parts List

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

4-1

CHAPTER 5 BLOCK AND SCHEMATIC/

CIRCUIT BOARD DIAGRAMS

Block Diagrams

VK-C212E VK-M212E

Schematic Diagrams (For reference)

Connection Diagram VK-C212E PCB1 VK-C212E Process [PCB2] VK-C212E Power [PCB2] VK-M212E PCB1 VK-M212E Process [PCB2] VK-M212E Power [PCB2]

Circuit Board Diagrams (For reference)

VK-C212E PCB1 -Side A/BVK-C212E PCB2 -Side A/BVK-M212E PCB1 -Side A/BVK-M212E PCB2 -Side A/B-

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

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

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

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

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

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

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

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

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

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

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

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

5-11

5-12 5-10

5-1 5-1

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

5-9

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.

CONTENTS & CAUTIONS

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.

[Capacitors]

Item

Value

Dielectric

strength

[Coils]

Item

Value

CAUTIONS

Indication

No indication

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

No indication

(All dielectric strengths other than 50V

are indicated in schematic diagrams)

Indication

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

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

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

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

µF

50V

µH

CHAPTER 1 GENERAL INFORMATION

1. Specifications

Video signal system

Video output Scanning system Resolution (horizontal TV line)

Minimum object illumination F1.2

Minimum object illumination F0.8

S/N ratio Gamma characteristics Photo-image sensor

Effective pixel count

Scanning frequency (INT. sync mode)

Sync modes Iris control

Power Maximum power consumption

Lens mount Operating environment

Storage environment

External dimensions Weight Input/output terminals

Switches

Controls

VK-C212E: PAL VK-M212E: CCIR

1.0 Vp-p/75 ohm 2:1 interlace VK-C212E: 480 VK-M212E: 570 VK-C212E: 1.2 lx VK-M212E: 0.18 lx VK-C212E: 0.54 lx VK-M212E: 0.08 lx 50 dB or more

0.45 VK-C212E: 1/3-inch CCD interline, complementary

color mosaic filter VK-M212E: 1/3-inch CCD Horizontal: 752 Vertical: 582 Horizontal: 15.625 kHz Vertical: 50.00 Hz Line Lock/Internal DC: DC iris AES: VK-C212E: Linear shutter (1/50 s to 1/20000 s)

VK-M212E: Linear shutter (1/50 s to 1/100000 s) VIDEO: Vcc = DC 12 V, 50 mA max.

Signal = 0.7 Vp-p, High impedance AC 24 V ± 10% (50 Hz ± 1 Hz) or DC 12 V ± 10% VK-C212E: 3.5 W or less VK-M212E: 3 W or less CS mount

-10 °C to +50 °C/14 °F to 122 °F, 85% RH or less (no condensation)

-20 °C to +60 °C/-4 °F to 140 °F, 95% RH or less (no condensation) 60 (W) x 54 (H) x 103.3 (D) mm 300g Video output: BNC Auto-iris output: 4-pin connector

(D4-151N-100/equivalent) Power input: 2-pin screwless terminal blocks Iris control: DC/AES/VIDEO BLC: BLC/OFF Sync mode: INT./L.L. Line Lock Phase control DC iris level control (adjstable POT in only DC iris mode)

1 - 1

2. Comparison of Specifications/Functions with Previous Model

ITEM

Signal Image sensor

Total number of pixels

Number of effective pixels Sync format Video signal output

VBS (VS) Video (Y : Luminance) Sync Burst

Impedance

Connector S/N ratio Horizontal resolution Minimum required illumination

White balance

Lens mount Lens

Range in which operation is possible Range in which performance is assured Power input

Power consumption Dimensions (excluding protrusions) Weight AES function Manual shutter speed control White balance control

AGC ON/OFF function ALC function Camera ID function Electrical zoom function Negative/Positive selection

VK-C212E

(Color video camera) PAL Format 1/3-inch CCD image sensor 795 (H) × 596 (V) 752 (H) × 582 (V) Internal/Line Lock

1.0 Vp-p approx. 0.7 Vp-p positive approx. 0.3 Vp-p negative approx. 0.3 Vp-p 8 cycles or more 75 ohm unbalanced BNC type 50 dB or more 460 TV line or more

2.5 lx or less (F1.2)

Automatic only

CS Not provided

-10 to +50 °C 85% or less

-10 to +50 °C 85% or less AC 24 V ± 10% 50 Hz DC 12 V (DC 12 V to DC 24 V)

5.0 W MAX 60 (W) × 46 (H) × 95 (D) mm

300 g Provided Not provided Automatic only

Not provided Provided Not provided Not provided Not provided

VK-C317E

(Color video camera)

Same as in left column

1/4-inch CCD image sensor 795 (H) × 596 (V) 752 (H) × 582 (V)

Same as in left column

450 TV line or more 4 lx or less (F 1.2 wide angle AGC mode NORM) 2 lx or less (F 1.2 wide angle AGC mode HIGH) Automatic or manual (switchable) Not provided F 1.2 Optical zoom × 2.5. f: 2.4 mm to 6.0mm

-10 to +50 °C 10 to 85 % +5 to 30 °C 45 to 75 % AC 24 V ± 20% 50 Hz DC 12 V (DC 10.8 V to DC 40 V)

3.0 W MAX 64 (W) × 58 (H) × 152 (D) mm

370 g

Same as in left column

Provided Automatic or manual (switchable) Provided

Same as in left column

Provided Provided (× 2) Provided

VK-M212E

(B/W video camera) CCIR Fromat 1/3-inch CCD image sensor 795 (H) × 596 (V) 752 (H) × 582 (V) Internal/Line Lock

1.0 Vp-p approx. 0.7 Vp-p positive approx. 0.3 Vp-p negative

----------

75 ohm unbalanced BNC type 50 dB or more 560 TV line or more

0.2 lx or less (F1.2)

Automatic only

CS Not provided

-10 to +50 °C 85% or less

-10 to +50 °C 85% or less AC 24 V ± 10% 50 Hz DC 12 V (DC 12 V to DC 24 V)

5.0 W MAX 60 (W) × 46 (H) × 95 (D) mm

300 g Provided Not provided Automatic only

Not provided Provided Not provided Not provided Not provided

1 - 2

3. Description of Functions

(Extract from the instruction manual)

IRIS

1 Flange back adjustment wheel

If focus needs to be adjusted after the lens has been mounted, loosen the Flange back lock screw ( 7 ) and rotate the Adjustment wheel to adjust.

2 DC iris level adjust POT

Adjust DC iris level manually.

3 BLC (Back Light Compensation) mode

switch When strong light (sun, sky, illumination, etc.) is present behind the object being photographed, the object will appear dark. In this case, put this switch in the BLC position.

4 Sync mode switch

For setting the sync mode.

L.L.: Line Lock mode INT.: Internal sync mode

5 Line phase adjustment POT

This POT is used to adjust phase when the Sync mode switch is set to L.L. position. (Default position: Most left hand side adjustable 0°~180°)

BLC

OFF

GND

SEE INSTRUCTION MANUAL

VIDEO

PHASE

INT.

L.L. OFF

AC24V CLASS2

ONLY

AUTO-IR IS DC

AES VIDEO

LOCK

IRIS

BLC

+12V DC

6 Auto-iris output connector

For connecting the cable of an auto-iris lens. The pin assignment is following.

No. DC VIDEO 1 CONTROL – DC 12 V (max. 50 mA) 2 CONTROL + N. C. 3 DRIVE + VIDEO

4 DRIVE – GND 7 Flange back lock screw 8 Auto-Iris mode switch

For switching the output from the auto-iris connector ( 6 ). Shutter speed is fixed at 1/50 s when switch is set to DC or VIDEO position.

DC: To be set when using a non-amp auto-iris lens.

AES: To be set when using AES (Auto Electronic Shutter).

VIDEO: To be set when using an auto-iris lens a built-in amp. 9 Video output connector

Connected to the TV monitor with a coaxial cable.

10 Power input terminal. Use a DC 12V (10.8 to 13.2 V) or AC 24 V (21.6

to 26.4 V, 49.5 to 50.5 Hz) power supply.

Caution: Use only with a 24V AC power supply marked class 2

or +12VDC power supply

1 - 3

(*1)

CHAPTER 2 DISASSEMBLY

Procedure

CAUTION: Take great care when disassembling the block, because the components may be popped out by the

tension force of absorber (spring). Reassemble the block, following instructions for "Reinstalling Front Block". Reassemble the other components by the reverse procedure to removal.

(1) Remove the two screws and then the tripod base. (2) Remove the screw and then the side panel. (3) Remove the screw and then the back panel. (4) Remove the five screws and then the main cover in the direction of the arrow. (5) Remove the four screws, disconnect the flexible flat cable, and then remove the PCB2 assembly. (6) Remove the two screws and then the PCB1 assembly. (*1) (*2) (7) Disconnect the flexible flat cable. (8) Remove the four screws and then the main base. (*3)

*1: The VK-M212E is not equipped with light shading rubber or crystal filter. *2: The crystal filter will detach automatically: Be careful not to damage it. *3: Hold the main base when removing the screws so that the CCD frame, FB adjust wheel and front spring plate do not pop

out by the tension force of absorber (spring).

SIDE PANEL

FLEXIBLE FLAT CABLE

PCB1 ASSEMBLY

FRONT SPRING PLATE

LIGHT SHADING RUBBER (*1)

ABSORBER

FRONT COVER

MOUNT CAP

(2)

FB ADJUST WHEEL

CCD FRAME

CRYSTAL FILTER (*1) (*2)

Fig. 1

(4)

(6)

(4)

(1)

(4)

(8)

(5)

MAIN COVER

TRIPOD BASE

LOCKING

PCB2 ASSEMBLY

(5)

PLATE

(7)

BACK PANEL

(3)

MAIN BASE

2 - 1

+ 16 hidden pages