50 Kamitoda, Toda-shi, Saitama 335-8511 Japan
Service Dept.: 5-66 Azuma , Kitamoto-shi, Saitama 364-0007 Japan
Tel: +81-48-541-2335 / 2432 FAX: +81-48-541-2703
Service Manual
CAMERA & MONITOR SYSTEM
6-inch Monitor
Correction day: 29.Sep.2005
Published by Service Dept.
298-6295-00
Printed in Japan
Sep.2005 P
12
SPECIFICATIONS
Video system: NTSC
Power voltage:DC 14.0/28.0 V
(DC 10.8-32.0 V)
Ground:Negative
Current consumption: 0.8 A or less (at DC 28.0 V)
1.5 A or less (at DC 14.0 V)
Power consumption:about 15 W
Timer operation:300 ± 30 seconds
Video input signal:VS 1 Vp-p (75 ohm)
Ambient temperature during use:
−10℃ to 50℃
Vibration resistance:4.4G or less
Monitor:6" tube, 90
Central resolution:
400 TV lines or more (H)
300 TV lines or more (V)
Dimensions(mm):155 (W) x 140 (H) x 170 (D)
6" 1/8 (W) x 5" 1/2 (H) 6" 11/16 (D)
(Not including mounting brackets,
andswitch protrusion)
Weight:About 1.7 kg
゜deflection B/W CRT
NOTE
* We cannot supply PWB with component parts in principle.
When a circuit on PWB has failure, please repair it by component parts base.
Parts which are not mentioned in service manual are not
supplied.
* Specifications and design are subject to change without
notice for further improvement.
* Please note that component life of CRT is clearly defined
in his owners manual as 3000 hours.
We normally recommend all of you to replace CRT after a
use of 3000 hours to maintain his product performance
well.
Model
CJ-763E-01
COMPONENTS
1.CJ-763E-01-----------1
2.Sun visor922-2286-021
3.Mounting bracket922-2289-011
4.Parts bag (Bracket cover)922-2290-011
4-1.Bracket cover-----------2
9.Parts bag (Screw)921-9319-021
9-1.M6 x 14 hex bolts with washer-----------6
9-2.M6 x 20 hex bolts with washer-----------4
9-3.M6 flanged hex nuts-----------4
9-4.6 x 20 Self-tapping screws-----------4
9-5.Plate nuts
(for 6 x 20 self-tapping screws)-----------4
To engineers in charge of repair or
inspection of our products.
Before repair or inspection, make sure to follow the
instructions so that customers and Engineers in
charge of repair or inspection can avoid suffering
any risk or injury.
1. Use specified parts.
The system uses parts with special safety features against
fire and voltage. Use only parts with equivalent characteristics when replacing them.
The use of unspecified parts shall be regarded as remodeling for which we shall not be liable. The onus of product
liability (PL) shall not be our responsibility in cases where
an accident or failure is as a result of unspecified parts
being used.
- 1 -
CJ-763E
Page 2
2. Place the parts and wiring back in their original positions
after replacement or re-wiring.
For proper circuit construction, use of insulation tubes,
bonding,gaps to PWB, etc, is involved. The wiring connection and routing to the PWB are specially planned using
clamps to keep away from heated and high voltage parts.
Ensure that they are placed back in their original positions
after repair or inspection.
If extended damage is caused due to negligence during
repair, the legal responsibility shall be with the repairing
company.
3. Check for safety after repair.
Check that the screws, parts and wires are put back securely in their original position after repair. Ensure for safety
reasons there is no possibility of secondary ploblems
around the repaired spots.
If extended damage is caused due to negligence of repair,
the legal responsibility shall be with the repairing company.
4. Caution in removal and making wiring connection to the
parts for the automobile.
Disconnect the battery terminal after turning the ignition
key off. If wrong wiring connections are made with the battery connected, a short circuit and/or fire may occur. If extensive damage is caused due to negligence of repair, the
legal responsibility shall be with the repairing company.
5. Cautions regarding chips.
Do not reuse removed chips even when no abnormality is
observed in their appearance. Always replace them with
new ones. (The chip parts include resistors, capacitors,
diodes, transistors, etc). The negative pole of tantalum
capacitors is highly susceptible to heat, so use special care
when replacing them and check the operation afterwards.
6. Cautions in handling flexible PWB
Before working with a soldering iron, make sure that the
iron tip temperature is around 270
. Take care not to apply the iron tip repeatedly(more than three times)to the
same patterns. Also take care not to apply the tip with force.
7. Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.
SAFETY PRECAUTION
PLEASE KEEP YOUR ATTENTION,AS BELOW
LISTED,WHEN DOING REPAIR AND
MAINTENAICE SERVICE.
1. To avoid the possible electrical shock or injury, and for continued safety, the area in which attention should be paid
has CAUTION MARK on the cabinet, chassis or on the
part for the shop service.
Prior to attempting on the repair or maintenance service,
read those cautions.
2. !SHOCK HAZARDOUS HIGH VOLTAGE!
Inside the enclosure,so exposed high voltage points. Handling the bare chassis with power must be paid the highest
attention to avoide the electrical shock.
3. Use only approved parts:
Only selected parts, in voltage break-down, are designed
to use in the set and we are paying attention to keep the
maximum safety of the product. Use only those parts which
are identical in specifications for replacement.
The devices indicated with mark in the circuit diagram and
parts list are critical for continued safety. Use only those
parts which are approved by us for the replacement.
4. Handle gently the Cathode-Ray-Tube:
The CRT contains high vacuum pressure.
It is possible to shrink down,explosively,by mechanical
shocks to the CONE of CRT.
Be careful on the handling of naked CRT or servicing from
the back of CRT.
Replace with a CRT of the same type number for continued safety.
Fragile glass picture tube is dangerous to handle.
Refer servicing to qualified service personal.
5. X-radiation:
This product includes critical mechanical and electrical part
witch are essential for X-radiation safety.
For continued safety replace critical components indicated
in the service manual only with exact replacement parts
given in the parts list.
Operating high voltage for this product is 9kV at zero beam
current.
Refer to service manual for measurement procedures and
proper service adjustment.
6. Identical placement of the parts and wires to the original:
Parts and wires placement is designed not to touch the
high temperature components and high voltage area by
using cable-tie.
Also keep the maximum anti-shocks performance, please
follow the original parts and wires placement when repair
and maintenance service.
7. Performance check:
Check if the screws, parts and wires which were removed
for repair and maintenance services,are returned to the
original position or not.
Do best for the continued safety!
CAUTIONS
Use of controls,adjustment, or performance of procedures
other than those specified herein, may result in hazardous
radiation exposure.
The Monitor should not be adjusted or repaired by anyone
except properly qualified service personnel.
BOTTM VIEW
This device compiles with Parts 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1)This device may not cause harmful interference, and
(2)This device must accept any interference received,
Including interference that may cause undesired operation.
This production compiles DHHS Rules 21 CFR Subchapter
J applicable at date of manufacture.
This device compiles with Parts 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1)This device may not cause harmful interference, and
(2)This device must accept any interference received,
Including interference that may cause undesired operation.
This production compiles DHHS Rules 21 CFR Subchapter
J applicable at date of manufacture.
- 2 -CJ-763E
Page 3
ADJUSTMENT
Initial setting
1. Power supply voltage: DC14V, or DC28V
2.knob(Contrast):mechanical center of VR5
3.knob(Luminance):mechanical center of VR6
4. ZOOM/IRIS button:off
5. DIM button:make it bright
6. Forcus:set as the best point by VR7
Adjustment of DC+9.3V stabilized power supplyvoltage
1. Please connect a camera 1, in order to obtain exact voltage.
2. Press CAM1 button.
3. Connect the 2 pin of IC2(PQ30RV21) and using VR1, set the voltage to +9.3
Oscillation frequency
1. Open the camera input (no load).
2. Connect the frequency counter to Red lead wire(DY-H(-)) and Blue lead wire(DY-H(+)) on
deflection yoke.
3. Set to 15,750Hz
4. Connect the frequency counter to Green lead wire(DY-V(-)) and Yellow lead wire(DY-V(+)) on
deflection yoke.
5. Set to 54Hz
±250Hz by the horizontal oscillation frequency adjustment VR(VR2).
±3Hz by the vertical oscillation frequency adjustment VR(VR3).
Centering adjustment
1. Input the cross-hatch video signals(horizontal H=17, Vertical V=15: Leader test pattern) to the
Camera jack.
2. Press ON button and make sure that the cross-hatch signals are displayed as shown in Fig. 1.
3. In order to make adjustment easy, please contract a vertical screen by VR4.
4. Adjust to make the screen inclination flat with the deflection coil.
After the adjustment, fix it with the clamp tightening screw, and apply a screw lock.
* Fix the deflection coil and CRT without clearance between them.
5. Adjust the screen to be center by the centering magnet knob. After the adjustment, apply a
screw lock.
* There are two adjusting points. The point which has better linearity shall be the adjusting
point.
6. Extend the vertical screen using VR4.
±0.2V.
5
Fig. 1
Vertical screen adjustment
1. Input the cross-hatch video signals(horizontal H=17, Vertical V=15: Leader test pattern) to the
Camera jack.
2. Adjust the vertical cross hatch line tobe 12.0
Flyback transformer wave check
1. Input the cross-hatch video signals(horizontal H=17, Vertical V=15:Leader test pattern) to the
Camera jack.
2. The collector wave of Q27 shall be as shown in Fig. 2.
3. When the probe is set close to the flyback transformer, the high-voltage induction ringing shall
be 20% or less as shown Fig. 3.
±0.25(line) with VR4.
㧭
㧮
Induction ringing(%) = B/A x 100%
Check of the flyback transformer high voltage
1. It is confirmed that the monitor is turned off.
2. Connect a high voltage meter to the anode cap of the flyback transformer.
* The input impedance of the high voltage meter shall be least 1000M ohm.
3. Turn on the monitor.
4. DIM button is pushed and the screen is made dark.
5. Set Contrast VR(VR5) and Luminance VR(VR6) to the minimum(Ik=0uA), It is required to make the screen dark.
6. The voltage of the cap shall be within 9kV
±0.4kV.
Fig. 2
Fig. 3
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CJ-763E
Page 4
Adjustment of distance mark center position
* When the distance marks are set, press MARK button to
display the distance mark and mark an adjustment mentioned in #6.
* When the distance mark is not set up, please perform the
adjustment and the check from #1 to #10.
1. Input the cross-hatch video signals(horizontal H=17, Vertical V=15: Leader test pattern) to the Camera jack.
2. Keep pressing MARK button for more than 2 seconds.
Display content " P0 ".
3. Press CAM1 button.
Display content " P1 ".
4. Press MARK button.
Display content " UD " " P1 ".
Or input an external clock (2fsc or 4fsc).
pin 3 : Xtal OUT: Connect the crystal.
pin 4: CTRL 1: Inputs the crystal/oscillator selection signal.
Low = crystal oscillator mode.
High = external clock mode.
pin 5: BLANK: This terminal outputs the blank signal.
pin 6: OSC IN: Connect the coil and capacitor to form the os-
pin 7: OSC OUT: Connect the coil and capacitor to form the os-
pin 8: CHARA: Outputs the character signal.
pin 9: CS: Serial data input is enabled when low.
pin 10: S CLK: Serial data input clock input.
pin 11: S I N: Serial data input.
pin 12: VDD 2: Analog system power supply.
pin 13: CV OUT: Composite video signal output.
pin 14: NC: Must be either connected to ground or left open.
pin 15: CV IN: Composite video signal input.
pin 16: VDD 1: +5 V. Digital system power supply.
pin 17: SYN IN: Video signal input for the built-in sync separator
pin 20: SEP IN: Inputs a vertical synchronization signal created
pin 21: CTRL 2: NTSC/PAL-M switching input.
pin 22: CTRL 3: SEPIN input control.
pin 23: RST: System reset input.
pin 24: VDD 1: +5 V digital system power supply.
cillator that generates the dot clock.
cillator that generates the dot clock.
circuit.
nal output.
by integrating the SEP OUT pin output signal.
High = PAL-M format.
Low = NTSC format.
High = V-SYNC not input.
Low = V-SYNC input.
051-6451-90LC74782JMH-9883-TLM
On-Screen Display Controller LSI for VCR Products
LC74782 displays characters and patterns on a TV screen under microprocessor control.
And LC74782 displays up to 12 lines of 24 characters, each in a 12x18
dot matrix.
Terminal Description
pin 1: VSS 1: Digital system ground.
pin 2: Xtal IN: Connect the crystal to generate the internal syn-
051-9402-08AT93C56W2k bit EEP-ROM
Terminal Description
pin 1: CS: IN : The chip select command input.
pin 2: S CLCK: IN : Serial clock input.
pin 3 : SI: IN : Serial data input.
pin 4 : SO: O : Serial data output.
pin 5: GND: - : Ground.
pin 6: ORG: IN: Internal organization to decide the word
length.
pin 7: NU: - : Not in use.
pin 8 : VCC: - : Positive supply voltage.
- 4 -CJ-763E
Page 5
052-3642-00uPD780024ASGB-X46-8ESystem Controller
Terminal Description
pin 1: NC: IN : Not in use.
pin 2: NC: O : Not in use.
pin 3 : POWER ON: O : Power ON signal output.
pin 4 : AUS OUT: O : Video on signal output. When video manu-
pin 5: CAM 2 OUT: O : The second camera on signal output. When
pin 6: CAM 1 OUT: O : The first camera on signal output. When the
pin 7: DIMMER: O : Dimmer control signal output.
pin 8: EEP CS: O : The chip select signal output to the EEP-
pin 9: VSS 0: - : LED power ground.
pin 10: VDD 0: - : Positive voltage supply.
pin 11: EEP DI: IN : The serial data input from the EEP-ROM.
pin 12: EEP DO: O : The serial data output to the EEP-ROM.
pin 13: EEP CK: O : The clock pulse output to the EEP-ROM.
pin 14: SI: IN : Serial data input.
pin 15: OSD SO: O : The serial data output to the on screen dis-
pin 16: OSD SCK: O : The clock pulse output to the on screen
pin 17: OSD CS: O : The chip select signal output to the on
pin 18: CAM 1 A IN: IN : The first camera Auto Select input. Active
pin 19: DIM A IN: IN : Dimmer signal input. Meanwhile, when this
pin 20 : VDD: - : Positive voltage supply.
pin 21: A V SS: - : Negative voltage supply for analog section.
pin 22: CAM 2 A IN: IN : The second camera Auto Select input.
pin 23: PARKING:IN : The parking brake signal input.
pin 24: NC: O : Not in use.
pin 25: NC: O : Not in use.
pin 26: A Vref: IN : The reference voltage for internal ADC.
al operation selection SW or Auto Select is
detected, High is output.
the second camera manual operation selection SW or Auto Select is detected, High is
output.
first camera manual operation selection SW
or Auto Select is detected, High is output.
ROM.
play IC.
display IC.
screen display IC.
Low.
terminal becomes Low when the first camera, the second camera or the video has
been selected, the dimmer signal output terminal becomes High.
Active Low.
pin 27: A VD D: - : Positive voltage supply for analog section.
pin 28: RESET: IN : Reset signal input.
pin 29 : X T 2: - : Crystal connection.
pin 30 : X T 1: - : Crystal connection.
pin 31: IC(VPP): - : This terminal is connected directly with GND
pin 32: X 2: - : The crystal connection.
pin 33: X 1: - : The crystal connection.
pin 34 : VSS: - : Negative voltage supply.
pin 35: AUX M IN: IN : Video manual operation selection SW input.
pin 36: MARK M IN: IN : Mark display manual operation SW input.
pin 37: DIM M IN: IN : Dimmer manual operation SW input. Active
pin 38: IRIS M IN: IN : The ON/OFF switch of backlighting compen-
pin 39 : CAM 2 M IN: IN : The second camera manual operation selec-
pin 40 : CAM 1 M IN: IN : The first camera manual operation selection
pin 41: 23.7k PULSE: O : When this IC detects the electronic zoom
pin 42: 10.0k PULSE: O : When this IC detects the backlighting com-
pin 43: IRIS OUT: O : This terminal outputs High synchronizing
pin 44: ACC OFF: IN : Power-off signal input.
pin 45: M OFF: IN : When this IC detects the voltage descent,
pin 46 : I & Z O N: O : This terminal outputs L when both backlight-
pin 47: NC: O : Not in use.
pin 48: NC: O : Not in use.
pin 49: NC: O : Not in use.
pin 50: NC: O : Not in use.
pin 51: NC: O : Not in use.
pin 52: NC: O : Not in use.
at the operation mode usually.
Active Low.
Active Low.
Low.
sation is done if a high voltage that hangs
to this terminal is within at one second.
Moreover, the ON/OFF switch of an electronic zoom is done for one second or more
a high voltage that hangs to this terminal.
tion SW input. Active Low.
SW input. Active Low.
function, 23.7kHz are output from this terminal.
pensation function, 10kHz are output from
this terminal.
with backlighting compensation pulse signal
output (10kHz).
the selection by manual each selection SW
is released.
ing compensation and an electronic zoom
functions are on.