Mitsubishi C-6401, C-6479 Service manual

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MITSUBISHI

C-6479

TABLE OF CONTENTS MONITORS

C=6401

PARAGRAPH

DESCRIPTION

	SECTION 1. SPECIFICATION	1-1
1.1	Features	1-1
1.2	Electrical Specification	1-3
1.3	Mechanical Specification	1-9
1.4	Miscellaneous Specification	1-9
	SECTION 2. INSTALLATION	2-1
2.1	General	2-1
2.2	Unpacking	2-1
2.3	Assembly	2-1
2.4	Caution Before "POWER ON"	2-1
2.5	Video Input	2-2
2.6	AC Input Power	2-2
2.7	DEGAUSSING AND BRIGHTNESS ·····	2-3
2.8	EXTERNAL SYNC INPUT ·····	2-4
	SECTION 3. CIRCUIT DESCRIPTION	3-1
3.1	Detailed Description	3-1
3.2	PCB-VIDEO Circuit	3-1
3.3	Horizontal Deflection Circuit	3-4
3.4	PCC Circuit	3-8
3.5	High Voltage Circuit	3-11
3.6	High Voltage Safety Circuit	3-13
3.7	Vertical Deflection Circuit	3-15
3.8	PCB-POWER Circuit	3-17
3.9	Degaussing Circuit	3-19
3.10	Low Voltage DC Power Supply	3-19

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TABLE OF CONTENTS (CONTINUED)

PARAGRAPH

DESCRIPTION

	SECTION 4. MAINTENANCE	4-1
4.1	Setting	4-5
4.2	Degaussing	4-6
4.3	Horizontal and Vertical Hold Controls	4-7
4.4	DC Source Voltage Adjustment	4-7
4.5	High Voltage and HV Limiter Adjustment	4-7
4.6	Width and Height Adjustment	4-8
4.7	Vertical Linearity Adjustment	4-9
4.8	Side PCC Adjustment	4-9
4.9	Horizontal Centering Adjustment	4-9
4.10	Vertical Centering Adjustment	4-9
4.11	Video Phase Adjustment	4-10
4.12	Gray Scale Tracking Adjustment	4-10
4.13	Focus Adjustment	4-12
4.14	Waveform Data	4-16
	SECTION 5. SCHEMATIC DIAGRAMS	5-1

Fig. 5-1 Schematic Diagram Model C-6479 Series .... 5-3 Fig. 5-2 Schematic Diagram Model C-6401 Series .... 5-4

SECTION 6. ELECTRICAL PARTS LIST ..... 6-1

6. .

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SECTION I SPECIFICATIONS

Mitsubishi Electric, MODEL C-6479 Series Color Display Monitor is a high resolution color display module for clear display of 4000 characters or less and for graphic symbols. This module is equipped with IN LINE GUNS/SHADOW MASK-CRT and PCBs with solid state active elements. MODEL C-6479 Series features stable convergence, easy maintenance, compact style. The standard model accepts ANALOG inputs for R.G.B. composite video signal, compositesync and HD/VD signals. This model is supplied without a cabinet but Mitsubishi is ready to supply one. This model complies with U.S. Department of Human and Health Service X-radiation Safety Rules, applicable at time of manufacture.

1.1 FEATURES

(A) Compact style

This model is so compact that it can be used as a stand-alone monitor or be built in a system.

(B) All solid state except for CRT

All active elements except for CRT are solid state elements e.g. IC or Transistor.

PCB can be replaced without use of tools and most parts can be checked and replaced without disassembling any construction.

(D) Anti spark circuit

All circuits are designed to prevent damage caused by spark in the CRT.

(E) Stable convergence

Self-convergence assemblies are mounted on the CRT.

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Complicated convergence procedures are not necessary, because electric convergence circuits are not used.

د. مراجع میں

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1.2 ELECTRICAL SPECIFICATIONS 1.2.1 AC Power Voltage : AC 100 ~ 120 V or 220 ~ 240 V

1.2.3 Power Consumption : 110 W

1.2.4 Input Signal

(a)	Termination :	:	75 Ω or High Impedance are selected by termination switches.
(b)	Connectors :		BNC connectors for all inputs
(c)	Sorts of inputs :	:	Red -Video Signal
			Green-Video Signal or Composite
			Video Signal
			Blue -Video Signal

These three signals are positive white and Sync shall be composited in Green. Separate sync input (C-6479 only) shall be applied on Sync Input in case that Video signal is without Sync.

Sync-Composite, HD/VD sync, signal of TTL level and negative going (active low)

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(d) Input levels : 0.7 - 1.5Vp-p for R,G,B inputs 1.0 - 5.0Vp-p for Sync signal

(e) Timing requirements

Fig. 1-1 shows Timing Chart for recommendation of input signals.

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VERTICAL TIMING

Fig. 1-1 Recommendable Timing Chart

د. مع معرف المع مع المعالي الم

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1.2.5 Scanning Frequency.

Scanning Frequencies shall be specified by users before order is placed.

Vertical frequency : 40 - 70 Hz Horizontal frequency : 31.5 kHz

1.2.6 CRT

"14" (13"V) Self-convergence type dot-phosphor shadow mask tube and in-line electron gun. Phosphors are Red, Green and Blue for the standard model. A Red, Green and White phosphor combination is abailable to order. In order to reduce FLICKER, Long Persistance phosphors are recommended.

1.2.7 Max. Effective Screen Size: 250 (W) × 190 (H) mm Users are requested to advise timings and actual area of use. In order to avoid trouble caused by timing, the manufacturer needs the signal source made by the user.
1.2.8 Ambient Temperature

Ambient Temperature on operating shall be -5 \u03c4 +40 °C for model with cover and 0 \u03c4 +45 °C without cover.

1.2.9 Warm-up Time

Warm-up time is 20 minutes max. At the end of the warmup period, no adjustments or service is necessary to meet the specifications contained herein.

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1.2.10 Package Environment

This equipment withstands room air temperature of -20 °C to +60 °C and 50 cm free drops encountered during transportation, handling and storage. This also withstands Relative Humidity of 0 % to 95 %.

1.2.11 Blanking Time

HORIZONTAL BLANKING TIME : LESS THAN 7.0 µS VERTICAL BLANKING TIME : LESS THAN 0.8 mS

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1.2.12 Video Amplifier

Video amplifier of these models are linear amplifiers and drives the cathode of the CRT. Video signals shall be general compatible with the timing requirements of EIA-STD-RS-170. The peak-to-peak inputs signal amplitude will be between 0.7 volts and 1.5 volts. Composite video signal shall be composed of apx. 70 % video and apx. 30 % sync amplitude.

a) Frequency Response : ±3 dB or better between 50 Hz to 40 MHz

b) Pulse Response : Rise and Fall times are shorter than 12 ns respectively
c) Differential Gain : Better than 5 %
d) Black Level Stability

Pedestal clamp circuits are equipped. Black level is maintained within 1 % at any Average Picture Level of 10 % to 90 %.

1.2.13 Convergence

Better than 0.4 mm in a centrally located area bounded by a circle. The diameter of this circle is equal to picture height. Elsewhere the deviation is better than 0.6 mm.

1.2.14 Raster Size Regulation

Raster Size change caused by change of CRT beam current 0 µA to 200 µA is less than 1 % of raster height.

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1.2.15 Linearity and Geometry

Linearity measured and calculated by the following formula is better than 7 %.

Formula : MAX - MIN × 1/2 × 100 (%)

Raster distortion is better than 2 % of raster height.

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1.3 MECHANICAL SPECIFICATIONS

1.3.1 BACK PANEL CONTROLS

Brigthtness controls are provided, which are easily accessible to the operator :

1.3.2 Configuration
- 1) Dimension mm (inch)

Refer to attached Drawings Fig. 1-2 ~ Fig. 1-3.

2) Weight

13 kg without cover

1.4 MISCELLANEOUS SPECIFICATIONS

1.4.1 Identification and Marking

The following markings are provided :

1) DHHS warning labels on the CRT and chassis.
2) High voltage warning labels on the chassis or th cabinet.
3) Rating label on the cabinet or chassis to show power source, model number, UL recognized, etc.

----

4) Serial number label on the cover or chassis.

1.4.2 Spare Parts

Fuses (3A, 2 pcs) are furnished in the package.

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1.4.3 DOCUMENTATION

The following documents are arranged and supplied to users :

Service manual containing circuit descriptions, operating procedures, maintenance instruction, parts list and schematic diagram.
2) Specification.
3) Drawings showing outline of equipment and details for installation.

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SECTION 2 INSTALLATION

2.1 GENERAL

This section explains how to install the monitor and how to verify its basic operation. Like most commercial TV receivers, the monitor is thoroughly adjusted and checked out at the factory, but it may require certain minor adjustments to adapt it to a particular display generator or other controller and to compensate for minor adjustment disturbances caused during shipment. For convenient reference, complete adjustment procedures and other basic checks are consolidated in Section 3, but only selected, simple procedures should be necessary for initial installation.

2.2 UNPACKING

The monitor is normally packaged in a separate shipping container unless it is incorporated into a system by MITSUBISHI ELECTRIC CORPORATION. Carefully open the top of the container. Remove the inside packing material and lift out the monitor.

2.3 ASSEMBLY

The monitor is supplied completely assembled.

2.4 CAUTION BEFORE "POWER ON"

Please make sure that PCBs, wires, components and structures are in perfect mechanical order and not damaged during transportation.

Particular attention should be paid to the anode cap of the CRT and to ensure that the sync select switch (S301, 302) on PCB VIDEO is set according to the input signal (WS or WO, COMPOSITE or HD/VD).

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2.5 VIDEO INPUTS

Connect Red, green and blue video to the appropriate video input connectors located on the rear connector panel. Refer to Table 2-1. Table video cables should be constructed with 75 Ω coaxial cable (type RG59/U, or equivalent) and terminated, at the monitor cable end, with standard BNC connector plugs. If the monitor is used without sync signal input, the green video signal input to the monitor must contain composite sync.

The Model C-6479 Series (13-inch) monitor contains two connectors for each video input to provide for loop-through operation. In addition, the input impedance of each input may be set to a high impedance or to 75 Ω by means of five input impedance selector switches, located next to the video input connectors. If the monitor is used in a loop-through position, these switches should be set to the high impedance position. For single unit operation, or when the monitor is the last unit in a loop-through string, these switches should be set to the 75 Ω position to terminate the video cable.

2.6 AC INPUT POWER

Before connecting the monitor to the power source, determine that the line voltage and frequency are proper (100~ 120 V AC or 220~240 V AC, 50/60 Hz). Check the position of the input voltage plug (P.) on the PCB-POWER. Make certain that the plug (P.) is in the proper position for the input line voltage (100~120 V AC or 220~240 V AC, 50/60 Hz). Plug the ac line cord into the power receptacle on the rear VIDEO panel.

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C.T DEGAUSSING AND BRIGHTNESS CONTROL

Turn on the 'POWER SWITCH' and adjust the brightness control. The raster will appear in approximately 20 seconds. The automatic degaussing works every power switch on. The other parts of the monitor may also need degaussing. Turn on the degaussing coil at a distance 1 meter from the monitor. For degaussing the frame, move it within about 10 cm from the top and side of the monitor. Move it in a circle a few times. Then move the degaussing coil gradually away from the monitor and turn off the coil.

Connector	Function	Connector
J211	Red Video Output	BNC
J212	Red Video Input	BNC
J241	Blue Video Output	BNC
J242	Blue Video Input	BNC
J271	Green Vidco Output	BNC
1272	Green Video Input	BNC
J311	Composite/HD Sync Output	BNC
2312	Composite/HD Sync Input	BNC
J321	VD Sync Output	ENC
J322	VD Sync Input	BNC

Table 2-1 Rear Panel connectors ( C-6479 only )

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2.8 EXTERNAL SYNC INPUTS

When the monitor is driven by the external sync signals, theGreen Video signal does not need a sync "Component". 1) When the composite sync signal is applied to the COMP/HD

input, the sync selector sw S 301 on PCB-VIDEO should be "EXT-SYNC" position.
2) When the horizontal sync and vertical sync signals are applied to the COMP/HD and VD inputs, respectively, the sync selector sw S301 and S302 on PCB-VIDEO should be "EXT/SYNC" and "COMP" position.

SYNC SW	S301	5302
INT	INT	COMP
COMP	EXT	COMP
HD/VD	EXT	HD/VD

2-4

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SECTION 3 CIRCUIT DESCRIPTION

3.1 DETAILED DESCRIPTION

This section contains detailed descriptions of circuits operation for the Model C-6479 Series Color Display Monitor. In reading this section, reference should be made to the monitor schematic diagrams.

3.2 PCB VIDEO CIRCUIT

3.2.1 Video Amplifiers

The color monitor contains three video amplifiers one for each primary color. These three amplifiers for the red, green and blue CRT guns are identical. Therefore, the operation of only one channel (RED) is described here.

Composite Video Signal input from J212 is applied to a buffer amplifier, Q212. The contrast control can be individually set to allow matching of the CRT color levels. The output of contrast control is supplied to Q201.

Q201 amplifies the video signal and the output from this transistor drives Q202. The bias voltage of Q201 is provided from Q202's emitter, so the DC voltage is stabilized by negative feed back.

D201 is a level shifter. to shift the Base bias voltage of Q202 for effective use of +B voltage. The output of Q202 is coupled to an emitter follower Q203 for impedance change. The output from the Q203's emitter is coupled to the driver Q205 for pedistal clamping. The video signal is clamped by the clamper Q204 and then drives Q208 through Q206, Q207.

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Q205's DC voltage is about 3.3 V and this voltage is the pedestal level. Q205, 206 and 207 construct the triple darlington for high impedance.

Q207 and Q208 form a cascade amplifier and generate enough amplitude of voltage to drive the the cathode of CRT. L201 is a peaking coil and R229 is a damping resistor. These form a High frequency compensation circuit with C213, R227.

Q209 is a constant current source for providing the cathode bias voltage of CRT, VR202 is a bias voltage control volume. When Q209's base voltage is lower the emitter current is higher, so Q209's collector voltage is higher.

Q210 and Q211 form a single ended push-pull to provide a drive current for the cathode of CRT.

3.2.2 Sync Separator

The sync separator is located on the PCB-VIDEO and operates from the green video input in the case of internal sync, or operates from the separate sync

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input. This selection is made by sync selection switch 5301.

The green Video signal or separate sync signal is clamped by D301. 302 and amplified by O301, O302. This signal drives sync stripper 0303. When the negative going sync signal comes Q302's collector, Q303 is on through C303. When the positive video signal comes Q302's collector, Q303 is off. So the separated (positive) composite sync signal comes the collector of 0303. The attnuated sync signal (by R306, R307) is buffered by O304 and fed to PCB-MAIN from the emitter (positive). The negative sync signal comes the collector of 0304 and this signal is differentiated by C304 and R312. 0305 is normally biased in OFF state. Positive edges of the negative sync signal (which are the trailing edges of the horizontal sync pulses) drive Q305 to ON state. The output across R313 and R314 is a negative pulse during the back porch interval, which drives (0204, 0234, 0264) the pedestal clampers.

3.2.3 DC Restoration

A back porch pulse from the sync separator circuit drives the base of pedestal clamper Q204 through R215. During the back porch period, pedestal clamper Q204 is turned on by a negative pulse and provides bias to emitter-follower Q205 to maintain the pedestal level at the constant DC level.

3.2.4 Blanking Circuit

The blanking circuit provides negative blanking pulse to the CRT control grid, during the vertical and horizontal periods, to prevent the flyback retrace lines from appearing on the CRT.

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This blanking function is performed by transistor Q306~ Q310 located on PCB-VIDEO. The base of pulse amplifier transistor Q310 is driven by both horizontal and vertical pulses. S301 is a selector for composite sync signal or HD/VD sync signal. In case the composite sync signal, Horizontal and Vertical sync signals appear at the collector of Q303. This signal is fed to Q306 through R315 and C305 (integrator), C306 and R317 (differentiator). So the Q306 turn on at the leading edge of Vertical sync signal.

The inverter transistor Q307 provides trigger pulses to one shot multivibrator constructed by Q308 and Q309. In initial state Q308 is OFF and Q309 is ON. Positive trigger pulse turns on Q308, so Q309 is OFF state. C309 is charged up through R327 and Q309 turns on, Q308 turns off. This blanking pulse is fed to Q310 to turn on during vertical blanking time. Horizontal retrace pulse from PCB-MAIN is attenuated by R333, R332 and sliced by D307. In the same way Q310 is driven into conduction during Horizontal retrace time and the grid of CRT is low.

3.3 HORIZONTAL DEFLECTION CIRCUIT

All signal processing is performed by IC401, which contains the Hor-AFC, Hor-OSC circuits.

The sync signal is applied on IC401, pin #16 and comparison voltage is applied on pin #14. Hor-OSC output pulse appears on pin #10.

The comparison voltage is formed by integrator (R506 and C505) from a horizontal output transformer (HOT) pulse. The video phase circuit composed R505, VR501 and C504

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determined the phase of comparison voltage corresponding to the relative position between the raster and picture positions.

Transistor Q502 drives interstage transformer T501 which couples the drive signal to the base of horizontal output transistor Q591. Capacitor C509 and resistor R514 provides wave damping for transient pulse.

Output transistor Q591 is driven into conduction for approximately 15 µs at the end of each horizontal sweep. Q591 is turned off at beginning of the retrace period. Retrace time is determined by the resonant frequency of the parallel circuit formed by inductance of the horizontal deflection yoke, the inductance of the HOT primary coil and C511. During retrace time, a half cycle of oscillation occurs at this resonant frequency with the collector of Q591 swinging positive.

When the half cycle is completed, the collector of Q591 begins to swing negative causing damper diode in Q591 to conduct. When damper diode conducts, the resonant frequency of the horizontal circuit is changed to produce the horizontal sweep, by the shorting of capacitors C511.

Current from the yoke flows through damper diode for approximately half of the horizontal sweep time, at which point, the current reaches zero and reverses. The reversed yoke current flows through Q591 (which is turnedon during the last half of the sweep time) until the next retrace period.

The horizontal yoke current is returned to ground through the side PCC transformer T503, Hor. linearity correction coil L503, Hor. width coil L502, and capacitor C517.

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The inductance of width coil L502 is variable to provide horizontal width adjustment.

In the horizontal deflection circuit, require two kinds of horizontal linearity correction. The first is a sawtooth wave to offset the resistive losses in the scanning circuit. This correction is developed across saturable reactor L503. This is an inductor with a ferrite core which is prepolarized by a permanent magnet. The coil L503 may functions as shown in Fig. 3-1, particularly, to improve the horizontal linearity of the raster on the left side.

The secondary linearity correction required in a parabolic wave which is necessary because the picture tube screen is flatter than a sphere with its center at the deflection yoke position. This is obtained by passing the sawtooth yoke current through capacitor C517.

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(a) Structure

(b) DC adding characteristics

1. .

Fig. 3-1 Horizontal Linearity Correction Coil

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3.4 PCC CIRCUIT

The side pincushion correction circuit (Side PCC) modulates the raster width as a function of vertical deflection. The side PCC utilizes saturable reactor T503 to modulate the raster width. The control winding of T503 is driven by a vertical parabolic voltage from the PCC amplifier Q404.

A output winding inductance is modulated by a vertical parabolic current as shown in Fig. 3-4. This output windings are inserted in series with the horizontal deflection yoke.

Horizontal yoke current flows through the output windings of T503, which are connected in phase opposition to cancel the vertical parabolic signal. The horizontal yoke current and the control current produce core saturation, which unbalances the circuit, introducting a vertical correction voltage in the horizontal yoke circuit. The correction voltage modulates the horizontal yoke current to correct side pincushion distortion. The modulated horizontal yoke current is shown in Fig. 3-2.

3- 6

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Fig. 3-2 Pincushion correction circuit

3-9

1.1 ma •

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Ay: Incremental horizontal deflection current S: Horizontal deflection sensitivity

Fig. 3-3 Modulated horizontal yoke current

Fig. 3-4 Saturable reactor.

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3.5 HIGH VOLTAGE CIRCUIT

CRT anode voltage is produced by rectifying a horizontal retrace pulse obtained from the high voltage winding of fly-back transformer (FBT), T531.

High-voltage shall be independent of anode current, in order to obtain stable performance.

The operation of the high-voltage circuit is the same as that of the horizontal deflection output circuit.

The input horizontal pulse produced the IC401 is applied to the high voltage driver transistor Q531 through the buffer transistor Q530.

Transformer T530 which is load of Q531, is a impedance transformer and output of T530 drive the high-voltage output transistor Q592.

The collector pulse of Q592 is stepped up by FBT and high-voltage is obtained from the single rectifier.

The high-voltage is divided by R591 and R552. The divided voltage is fed to the error amplifier, Q537 through the buffer amplifier Q536. Error amplifier Q537 compares the divided high-voltage, applied to its base through the HV-ADJ Control, VR532, to the zener voltage of D531.

Q532 and Q593 two transistors jointly are called a Darlington configuration. The base of Q532 is controlled by error amplifier Q537.

If for any reason the high-voltage changes, there will be a change in the base voltage of Q537 representing the error, which is amplified by Q532 and fed to Q593 where it acts to correct the error. For example, if

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high-voltage to go more positive, the base of Q536 becomes more positive. The emitter of Q536 goes positive, turning Q537 on harder. As Q537 increases conduction, the base voltage of Q532 is reduced and Q593 effectively increase the impedance and dc power supply voltage of FBT will reduce to get normal high-voltage, 24 kV.

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3.6 HIGH VOLTAGE SAFETY CIRCUIT

CRT anode voltage is produced by rectification of a horizontal retrace pulse obtained from the High Voltage winding of flyback transformer T531. Fig. 3-5 shows high Voltage circuit and safety circuit. If High Voltage reaches to a certain designed level above 24 kV, the safety circuit begins to operate and cuts off high-voltage drive circuit, so this circuit keep X-Radiation within permitted quantity. In safety circuit, anode voltage is divided by R561, VR531, R555 and this divided voltage is fed to the base of Q539 through D538 and D539.

If high-voltage increases by some causes (for example, in case of dc power regulator circuit failure) the rectified voltage of D534 also increases, the voltage at the junction of D538 and VR531 will increase sufficiently to begin to saturate Q539. This junction voltage exceeds zener voltage of D539, +6V, Q539 is turn on, and Q530 is turn off, Q531 is

turn on, pulling down the base voltage of Q530 to the earth potential so that the horizontal drive circuit stop the operation.

As the result, high-voltage generation is dropped to zero due to no pulse generation.

HV AND SAFETY CIRCUIT

Safety Circuit is provided to prevent occasional increase of the high voltage that may cause radiation of harmfull level. No modification shall be applied on the high voltage and safety circuit.

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Fig. 3-5 High-voltage Safety Circuit

3-14

1. .

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3.7 VERTICAL DEFLECTION CIRCUIT

The vertical deflection circuits consist of the IC401, (contains the vertical oscillator and vertical driver), vertical output stage and vertical centering circuit.

Fig. 3-6 Block Diagram of IC503

The vertical sync pulse is applied to pin #8 of IC401, and oscillator sawtooth wave generated in the IC401 is compared with the feed back deflection current wave developed across R410 and R411.- Height control, VR401 adjusts the waveform of the feed back voltage.

The output voltage from IC401, pin #2 is applied to the base of driver Q492.

The vertical output amplifier Q491 and Q492 operates Class B push-pull. When scanning the upper half of the screen, deflection yoke current flows through +80V, Q491 and C411. When scanning the lower half of the screen, the yoke current reverse flowing through C411 and Q492.

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Transistors Q491 and Q492 composed a complementary emitter-follower to supply slight dc current to the vertical deflection yoke to adjust centering the raster by Vert. Centering control, VR406 and tap selector, DH.

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3.8 PCB-POWER UNIT

POWER REGURATOR CIRCUIT.

AC power from Line Filter is rectified by D901, and then chopped by Q903. This chopped wave voltage is transformed by T902 which secondary widing supplies power to D907 to generate dc power on connector J903. IC901 is a all in one PWM Power control IC. See Fig. 3-7. It includes an error amplifier, an oscillator, and a comparator, etc. Pin #1 and pin #2 are the input terminals of an error amplifier. Output voltage conducted on pin #1 is always compared with the voltage on pin #2 which is one-twice of pin #16 (reference voltage). When the output voltage is higher, the output of error amplifier is lower. So the output pulse width of a comparator which compares the output voltage of error amplifier with a sawtooth wave of Pin #7 is wider. Two outputs of three inputs NOR gates are high in case of three inputs are low. The outputs of driver transistors Q1 and Q2 are respectively. Finally the pulse width of 0904's base is narrower which makes the output voltage to lower.

Q901 is a triac to shorten R903 which decreases inrush current.

Q902 and T901 consist of a blocking oscillator to provide a power for control IC.

3-17

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3.9 DEGAUSSING CIRCUIT

Posistor RP901 and RP902, and degaussing coil L991 compose a digaussing circuit to demagnetic the CRT holder. Resistance of posistor increase rapidly when voltages are applied.

3.10 LOW VOLTAGE DC POWER SUPPLIES

The primary dc power source is +Bl (+90V) switching regulator on the PCB-POWER. Other power sources (+20 volts dc, CRT Heater (6.3V), H-CENT, +B2 (+180V) are shown in Fig. 3-9. These power sources obtained from horizontal output transformer T502 by pulse rectification.

Fig. 3-8 Low Voltage Power Supply Circuits

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SECTION 4 MAINTENANCE

SAFETY PRECAUTIONS

(NOTICE) Observe all cautions and safety related notes located inside the monitor cabinet and on the monitor chassis.

WARNING

Operation of these monitors outside the cabinet or with the cover removed, involves a shock hazard from the monitor power supplies. Work on the monitor should not be attempted by anyone who is not throughly familiar with precautions necessary when working on high voltage equipment.
2. Do not install, remove or handle the picture tube in any manner unless shatter-proof goggles are worn. People not so equipped should be kept away while handling picture tube. Keep picture tube away from the body while handling.

X-RADIATION WARNING

The surface of picture tube may X-Radiation. Precaution during servicing and if it possible use of a lead apron of metal for shielding is recommended.

To avoid possible exposure to X-Radiation and electrical shock hazard, the high voltage compartment must be kept in place whenever the chassis is in operation. When replacing picture tube, use only designated replacement part since it is a critical component with regard to X-Radiation at noted above.

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PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in color display monitor have special safety related characteristics. These characteristics are often not evident form visual inspection not can the protection afforded by them necessarily be obtained by using replacement components rated for 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 shading on the schematic diagram and the parts list of this. service manual and by marking on the supplementary sheet for this chassis to be issued subsequently, therefore replacement of any safety parts should be identical invalue and characteristics.

ALIGNMENT PROCEDURE

Monitor alignment procedures contained in this section should be follow whenever a major component is replaced: such as a CRT, deflection yoke, or circuit board. Some alignment may also be required periodically to correct for component ageing. Degaussing should be performed periodically whenever it is suspected that degaussing is required. These alignment procedures should be performed in the order given herein. Due to interaction, some portions of the alignment procedures may require repeating.

For quick reference, all maintenance adjustments are listed in Table 4-1, together with the location, circuit designator and related paragraph for each control. Figure 4-1 through 4-3 shows the location of all adjustments.

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In the following alignemnt procedures it is assumed that proper line voltage and frequency are available. A video source with proper line rate is required for application to the red, green, and blue inputs. The green video must contain composite sync or a proper signal supplied to the external sync input. After all inputs have been connected, the Horizontal Hold (VR502) and the Vertical Hold (VR401) must be adjusted for a stable picture. Approximately 30 minutes should be allowed for warm-up before proceeding.

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	FUNCTION	LOCATION	DISIGNATION	PARAGRAPH
I	Hor. Hold	PCB-MAIN	VR502	4.3
7	Vert. Hold	17	VR403	4.3
	90 V DC	PCB-POWER	VR901	4.4
I	HIGH VOLTAGE	PCB-MAIN	VR532	4.5
I	HV Limit	PCB-MAIN	VR531	4.5
]	Hor. Width	PCB-MAIN	L502	4.6
٦	Vert. Hight	PCB-MAIN	VR401	4.6
•	Vert. Lineality	PCB-MAIN	VR402	4.7
	SIDE PCC	PCB-MAIN	VR404,VR405	4.8
	Raster Position	PCB-MAIN
	Hor. Centering		VR503	4.9
	Vert.Centering		VR406	4.10
	Video Phase	PCB-MAIN	VR501	4.11
	R Bias	PCB-VIDEO	VR202	4.12
	G "	n	VR262	4.12
	в "	n	VR232	4.12
	R Contrast	17	VR201	4.12
	G"	11	VR261	4.12
	в "	11	VR231	4.12
	R Peaking	PCB-VIDEO	L201	4.12
	G "	17	L261	4.12
	B " V Blanking Brightness	" Back Panel	L231 VR301 VR530	4.12

Table 4-1 MAINTENANCE ADJUSTMENTS

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4.1 SETTING

4.1.1 Set the Control VRs as following.

a. Center position PCB-MAIN VR401 VR402 VR403 VR404 VR405 VR406 VR501 VR502 VR503 FOCUS VR532 SCREEN

PCB-POWER VR901

b. Full counter clockwise position

PCB-MAIN	VR531	(HV-LIMIT)
PCB-VIDEO	VR202	VR232
	VR262
	VR201	VR231
	VR261

4.1.2 Insert a connector (PE) on the PCB-POWER to the AC line input voltage (100 $\sim$ 120 V or 220 $\sim$ 240 V AC)

4-5

•

Page 41

4.2 DEGAUSSING

The display monitor should be degaussed before set-up and adjustment procedure are performed. The display monitor is equipped with Automatic Degaussing Circuit. Other parts of the monitor may also require degaussing. This would be indicated by poor color purity or convergence which cannot be corrected by normal alignment. Degaussing of the monitor chassis is performed manually by using a commercial degaussing coil. The following procedure should be adhered to when using a degaussing coil:

a. With coil switch in the OFF position and the degaussing coil 6 to 8 feet from, and perpendicular to the screen, turn the switch to the ON position.
b. Turn the coil parallel to the screen and, with a circular motion, slowly bring the coil to the monitor.
c. Continuing the circular motion, pass the coil over the front, top, and sides of the monitor for approximately two minutes.
d. Then, moving in a circular motion and with the coil perpendicular to the monitor, slowly back away 6 to 8 feet and turn the coil switch OFF.

NOTE: Degaussing Coil - HOZAN, Type HC-21

Page 42

4.3 HORIZONTAL AND VERTICAL HOLD CONTROLS

Ensure that video, HD and VD signals are applied to the connector (VA).

Set Hor. Hold (VR502) and Vert. Hold (VR403) on the PCB-MAIN for stable picture.

4.4 DC SOURCE VOLTAGE ADJUSTMENT
- a. Check the AC input line voltage is within 100 \cap 120 V AC or 220 \cap 240 V AC.
- b. Supply a line voltage to the PCB-POWER through the connector (PA).
- c. Connect the DC voltmeter to the collector of Q593 on the RADIATOR-D and the chassis. Adjust +Bl Control (VR901) on the PCB-POWER at DC + 90 V.
4.5 HIGH VOLTAGE AND HV LIMITER ADJUSTMENT
- a. Remove a line voltage.
  - b. Connect a high voltage meter between the anode cap of CRT and the chassis.
  - c. Supply a line voltage.
  - d. Turn High Voltage Control (VR532) on the PCB-MAIN gradually clockwise until a reading of 27.0 ± 0.3 kV is achieved.

If High Voltage value cannot be obtained, adjust the +Bl Control (VR901) to get 27.0 = 0.3 kV.

Page 43

e. Turn High Voltage Limiter Control (VR531) gradually clockwise to operate the High Voltage Safety Circuit and goes out the raster.
f. Remove a line voltage.
g. Reset the High Voltage Control (VR532) to the center position and supply a line voltage.
h. Adjust High Voltage Control (VR532) for 24±0.3 kV at anode cap of CRT.

NOTICE

High Voltage Control (VR532) and HV Limiter Control (VR531) are critical components and never adjust or replace these components in the field servicing.

4.6 WIDTH AND HEIGHT ADJUSTMENT
- a. Select a OUT-LINE test pattern.
- b. Adjust Hor. Width Control (L503) and Vert. Height Control (VR401) for a OUT-LINE pattern size.

WIDTH × HEIGHT : 240 ± 2 × 180 ± 2 (mm)

4-8

•

Page 44

4.7 VERTICAL LINEARITY ADJUSTMENT
- a. Select a cross-hatch test pattern.
- b. Adjust Vert. Linearity Control (VR402) for uniform spacing of cross-hatch at top/bottom and center of viewing area.
4.8 SIDE PCC ADJUSTMENT
- a. Select a cross-hatch test pattern.
- b. Observe the vertial lines at the left and right sides, adjust PCC Phase Control (VR404) and PCC Amp Control (VR405) on the PCB-MAIN to obtain straight vertical edges at the right and left sides of the screen.
4.9 HORIZONTAL CENTERING ADJUSTMENT
- a. Select a OUT-LINE test pattern.
- b. Adjust Hor. Centering Control (VR503) to center the raster on the screen.
4.10 VERTICAL CENTERING ADJUSTMENT
- a. Select a OUT-LINE test pattern.
- b. Vertical centering correction is selected by the position of connector (DH).

Three selections of vertical centering are provided. To select no vertical centering correction, the connector (DH) is plugged into connector (DH) receptacle pin 2. Plugging the connector (DH)

•

Page 45

into pin 1 or pin 3 will-deflect the entire raster vertically.

The direction of raster movement may be reversed by selecting the connector (DH) when plugged into pin 1 or pin 3.

c. Adjust Vert. Centering Control (VR406) to center the raster on the screen
4.11 VIDEO PHASE ADJUSTMENT
- a. Select a OUT-LINE test pattern.
- b. Ensure Hor. Hold Control (VR502) has been adjusted.
- c. Adjust Brightness Control (VR530) for a picture of suitable contrast with the dim raster.
- d. Adjust Hor. Phase Control (VR501) to center the OUT-LINE picture on the raster.
4.12 GRAY SCALE TRACKING ADJUSTMENT
4.12.1 Cathode Bias and Screen Bias adjustment
- a. Select a NO-VIDEO signal pattern.
- b. Connect the DC voltmeter to the cathode of D281, D282 or D283 on the PCB-CRT. Set the R, B, G-Bias Controls (VR202, VR232 and VR262) on the PCB-CRT at DC + 150 ± 3 V.
- c. Turn Screen Bias Control (R591) located High Voltage resistor block. Observe the raster color to determine which CRT beams are visible.

Page 46

Adjust the R, B, G Bias Controls (VR202, VR232 and VR262) as required to equalize the three beam intensities resulting a grey raster.
4.12.2 Video Drive adjustment
- a. Prior to performing the video drive adjustment, the cathode bias and screen bias adjustment must be proper.
- b. Select a WHITE-FIELD test pattern.
- c. Set the three Contrast Controls (VR201, VR231 and VR261) on the PCB-CRT fully clockwise position.
- d. Observe the highlight color and adjust the three Contrast Controls (VR201, VR231 and VR261) to obtain white highlights.

4.12.3 Frequency Characteristics

a. Apply composite sweep signal of 1Vp-p to the input terminal of the Red and GREEN channels.
b. Connect a 10 : 1 probe of an oscilloscope through a coupling capacitor (1pF) to R on PCB-CRT.
c. Adjust L201 in order that variations in the frequency range 1-40MHz to be ± 3dB.
d. Adjust the BLUE channel and GREEN channel in the same way.

•

GREEN	-	Channel	L261
BLUE	-	Channel	L231

Page 47

4.13 FOCUS ADJUSTMENT

a. Select a DOT test pattern.

Adjust the BRIGHTNESS Control (VR530) for a normal display.
c. Adjust the Focus Control (R591) located High voltage resistor block best overall focus, observating both the center and corners of the screen.

Page 48

Fig. 4-1 PCB-POWER Location

Page 49

Fig. 4-2 PCB-MAIN Locat

Page 50

Fig 1-3 C-6401 OUTLINE

Page 51

Fig.1-2 C-6479 OUTLINE

い

Page 52

Fig. 4-3 PCB-VIDEO Location

Page 53

Fig. 4-4 PCB-CRT Location

Page 54

4.14 WAVEFORM DATA

Each waveform, in Fig. 4-52 through 4-51, is labeled with the waveform number, the vertical scaling in volts per division and the horizontal scaling in time per division. The waveforms are referenced by waveform number in the schematic diagram contained in Fig. 5-1. When measuring waveforms proper line voltage and video, HD and VD inputs must be applied to the monitor. Connect the vertical sync pulse to the oscilloscope external-trigger-input and adjust the time base to that specified on the waveform label. The vertical sync pulse may be obtained from the video source or from vertical circuit in the monitor at R410/R411 on the PCB-MAIN.

When observing horizontal circuit waveforms, sync may be obtained from horizontal pulse at CONNECTOR-PB #3 on the PCB-MAIN.

Note : When measuring waveforms of primary power circuit, Oscilloscope GND terminal must be connected to primary GND point, for example, emitter of Q903.

Page 55

b. D915 Cathode

(2) a. D904 Collector b. D903 Anode

--------------------------------------

Fig. 4-5 a. Waveforms (PCB-POWER)

b. Q903 Collector current

Fig. 4-5 b. Waveforms (PCB-POWER)

Page 56

ج

(5) CONNECTOR-VA #9, VD, 1V, 5ms (6) Q401 COLL, 1V, 5ms

Fig. 4-5 c. Waveforms (PCB-MAIN)

(7) Q501 COLL, 5V, 20µs

(8) IC401 #14, 2V, 20µs

Fig. 4-5 d. Waveforms (PCB-MAIN)

Page 57

(9) a. IC401 #10, 5V, 20us b. 0502 COLL, 50V

(10) Q591 BASE, 2V, 20us

Fig 4-5 e. Waveforms (PCB-MAIN)

Fig 4-5 f. Waveforms (PCB-MAIN)

Page 58








1995 (A. 1996)

(13) T502 #3, 50V, 20µs

		55
			1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-

			17.7	i Ni

	(1) (1)	- 4
				1711
~	-

(14) T502 #5, 20V, 20µs

Fig 4-5 g. Waveforms (PCB-MAIN)

(15) T502 #8(GND)-#9, 5V, 20us

(16) a. Q531 BASE, 1V, 20us b. Q531 COLL, 50V

Fig. 4-5 h. Waveforms (PCB-MAIN)

Page 59

(18) Q592 COLL, 100V, 20us
Fig. 4-5 i. Waveforms (PCB-MAIN)

(19) T531 #3, 50V, 20us
(20) IC401 #2, 0.5V, 5ms

Fig. 4-5 j. Waveforms (PCB-MAIN)

Page 60

(21) Q492 COLL, 20V, 5ms

(22) R410/R411, 1V, 5ms

Fig. 4-5 k. Waveforms (PCB-MAIN)

(23) Q402 BASE, 0.2V, 5ms

(24) Q403, COLL, 2V, 5ms

Fig 4-5 1. Waveforms (PCB-MAIN)

Page 61

SECTION 5 SCHEMATIC DIAGRAMS

MODEL: C-6479 Series C-6401

The complete schematic diagram for the monitor is contained in four sections.

Fig.5-l	SCHEMATIC DIAGRAM MODEL C-5479 SERIES COLOR DISPLAY MONITOR
Fig.5-2	SCHEMATIC DIAGRAM MODEL C-6401 SERIES COLOR DISPLAY MONITOR

The numbered references on the schematic diagrams are the waveform designators for the waveforms contained in Fig. 4.5a through Fig. 4.5 l

NOTE 1:

1. The unit of resistance "ohm" entirely omitted. Accordingly, K=1000 ohms, M=1000K ohms
The wattage of resistor, not specifically designated, is 1/4 Watt.
3. Resistors, not specifically designated, are: Fixed carbon film resistor.

4. The marks of resistor are as follow:

S : Composition (Solid type) resistor
CE : Cemented resistor
MB : Metal oxide film resistor (type B)
W : Wire wound resistor
5. The tolerance of resistor value, not specifically designated, is ±5%, K = ±10%, M = ±20%
6. The unit of capacitance, not specifically designated,
- a) uF, for numbers less than 1
- b) pF, for numbers great than 1

Page 62

7. Capacitors, not specifically designated are: ceramic Capacitors except electrolytic capacitors.
The marks of capacitors are as follow: Q
- (MF) : Polyester film capacitor
- PC : Paper capacitor (type C) (PP) : Polypropylene film capacitor (PL) : Plastic film capacitor
  - ) : Tantalum capacitor
  - : Electrolytic capacitor
9. The PC work voltage of capacitor, not specifically designed is 50V.
10. The tolerance of capacitor value, not specifically designated.
- is: ±10% for polyester capacitor ±5% for ceramic capacitor
- and J=±5%, K=±10%, M=±20%, P=± 0%

C==0.25pF, D==0.5pF, F==1pF, Z=_208

11. Specific Symbol

- Zener Diode, SCR (Thyristor) - Triac, Air Gap Posistor

NOTE 2 -

ر مي ج

1. DC voltage were measured from points indicated to the circuit ground with a VTVM. Line voltage at 100V AC on signal applied.
2. This is a basic schematic diagram. Some sets may be subject to modification according to engineering improvement.

Page 63

SECTION 6 PARTS LIST

MODEL: C-6479/C-6401

The following table contains a list of replaceable subassemblies, and Chassis piece parts. In order to expedite delivery of replacement part orders.

. Specify: 1. Model Number
- 2. Part Number and Description
- 3. Quantity

Unless full information is supplies, delay in execution of orders will result.

RESISTOR

CAPACITOR

•

MARK	TOLERANCE	MARK	TOLERANCE	MARK	TOLERANCE
J	±5%	J	±58	Z	+80% -20%
ĸ	±10%	· K	±10%	С	±0.25pF
M	±20%	M	±20%	Р	±0.5pF
F	±1동	Ρ	+100% -0%	F	±lpF

R100 /// I Critical component

Page 64

Table 6-1 PARTS LIST C-64/9	·/C-6401

SYMBOL	PART NO.	DESC	RIPTION
IC401	266P50101 .	IC	HA11414
TC901	277256001	IC	SG3524
10,01
·
020102310251	260217106	TRANSISTOR	25C710-D,E
020202320262		*
Q203Q233Q263		n	11
Q204Q234Q264	270P16504	n	25A628-F
Q205Q235Q265	260P17106		2SC710-D,E -
Q206Q236Q266	n		**
Q207Q237Q267	260P36804		2SC2024G,B
Q208Q238Q268	270P51406	त्र	_ 2SC1505L
Q209Q239Q269	270P51002	π	2SA949Y
021002400270	270P52601	R	2SD758B
Q211Q241Q271	270P52501	π	2SB718B
Q212Q242Q272	260P17106	18:	2SC710-D,E


Q301	260P17106	TRANSISTOR	2SC710-D,E
Q302	270P52401	11	2SA781K
Q303	15	tt	13
Q304	260P17106	n	2SC710-D,E
Q305	n	TÊ	31
Q306	π	n	11
Q307	n	11	tt
Q308	71	17	21
0309	и.	11	31
		17	20022208

1.....................................

Page 65

SYMBOL	PART NO.	DESC	CRIPTION
Q401-	260P17105 ·	TRANSISTOR	256710-D
0402	260P17706	π	2SC711-E,F
Q403	260P18603	١٢	25 B647A
Q491 Q492	270P50701	Π	25C2168


Q501	260P17105	TRANSISTOR	2SC710-D
Q502	270P51401	11	2SC1507
		·
Q530	260P04003	TRANSISTOR	25C620-D
Q531	270P51401	Π	2SC1507
Q532	270P51201	Π	2SC2317
Q533	260P35301	. #	2SC1515K
		······································
·
Q536	260P17703	TRANSISTOR	2SC711A-G
Q537	260P35203	19	2SC1749-D
Q539	260P17105	Ħ	2SC710-D
Q540	260P17105	•	2SC710-D
Q591	270P52101	TRANSISTOR	2SD870
Q592	270P52101	n -	2SD870
Q593	260P21909	17	2SC1106
Q594	277P51903	IC .	HA17806
Q595	277251904	11	HA17815
Q901	275P50201	SCR-TR	BCR10AM-10R
Q902	270P53901	TRANSISTOR	2SC3178
Q903	270F 50201	11	2SC2027
Q904	270P54303	11	2SC2331
Q905	270P54401	17	2SC2311
Q906	260P17102	n	2SC710-C,D

0541	260P35203	TRANSISTOR	2SC1749-D

Table 6-1 PARTS LIST C-6479/C-6401

Page 66

Table 6-1 PARTS LIST C-6479/C6401

SYMBOL	PART NO.		DESCRIPTION
D201D231D261	264P19303 ·	DIODE	MZ305B
D202D203D204	264P04502	11	IS2076A
D232D233D234	. 11	11	n
D262D263D264	11	u	11
D205D235D265	264P19303		MZ305B
D206D236D266	264P20901	11	RC-2



D301D302D303	264P04502	DIODE	IS2076A
D304	264P19303	81	MZ305B
D305D306	264P04502	11	IS2076A

D308D309	264P04502	11	IS2076A
D310	264P 19303	11	MZ305B


D401	264P19306	DIODE	MZ312B
D402	264P04502	71	IS2076A
D403	ŧt	11	τι
			-


D501D506	264P04502	DIODE	IS2076A
D502D503	264P19601	. 11	RU-2
D504D505	ŧt	11	n



D531	264P22006	DIODE	MZ310B
D532	264P19601	t i	RU-2

Page 67

Table 6-1 PARTS LIST C-6479/C6401


SYMBOL	PART NO.		DESCRIPTION
D535	264P15101	LED	GL=JAR2
D534	260P19601	DIODE	RU-2
D538	264P04502	•	1S2076A
D539	264P22004	т	MZ306B


D542	.254P04502	DIODE	152076A

D543	264P19601	DIODE	RU-2
D544	264P22108	n	MZ336B

			·
D901D932	264P14701	DIODE	RM2C
D933D934	11	. 17	n

D902	274P52601	DIODE	F114B
D903	274P52604	17
D904	274P50501	71	MZ 31 8A
D905	274P52601	71	F114B
	•		······································
D907	274P52704	IT	ERC2506
D908	274P5260#		F114B

D910	274P52601	DIODE	F114B
D911	5B1653401	77	MD236
D912	264P19305	н	MZ303B
D913	17	18	17	-
D914	264P04502	18	1520764
D915	274P52601	TP		-
D916	1P	19	11	-
D917	264P04502	tr	IS2076A	-
D913	264P19303	11	MZ305B
				-1

Page 68

Table 6-1	PARTS	LIST	C-6479/C-6401

SYMBOL PART NO. DESCRIPTION D920 264P04502. DIODEIS2076A D921 " " D922 " " D923 264P19303 " MZ305B D924 274P52C01 " F114 B			-
D920 264P04502. DIODE IS2076A D921 " D922 " D923 264P19303 " MZ305B DD24 D924 274P52601 " F114 B " TH901 264P08208 SCR CR02AM-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 L201L231L261 349D06002 COIL-FILTER DE L501 409P00605 COIL-FILTER DE T502 409E50801 TRANS-H=0 TS03	SYMBOL	PART NO.		DESCRIPTION
D921 " D922 " D923 264P19303 " MZ305B D924 274P52601 " F114 B TH901 264P08208 SCR CR02AM-2 D281D282D283 264P20901 DIODE RC-2 - D281D282D283 264P20901 DIODE RC-2 - L201L231L261 349D06002 COIL-PEAKING - L201L231L261 349D06055 COIL-FILTER L501 409P06055 COIL-FILTER L502 409C50R01 COIL-LINEARITY - T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H=0 T503 349C00902 T-PCC - T530 336P00504 FET T901 355P53001 TRANS T902 355P52001 TRANS-CURRENT	D920	264P04502.	DIODE	152076A
D922 " D923 264P19303 " MZ305B D924 274P52601 " F114 B TH901 264P08208 SCR CR02AM-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 L201L231L261 349D06002 COIL-PEAKING L201L231L261 349D06002 COIL-PEAKING L501 409P00605 COIL-FILTER L502 409C50R01 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 336P00504 H-T-DRIVE T530 336P00504 FBT T901 355P53001 TRANS T902 355P53001 TRANS-CDRRENT DT901 355P52801 TRANS-DRIVE	D921	71	10	11
D923 264P19303 " MZ305B D924 274P52C01 " F114 9 TH901 264P08208 SCR CR02AM-2 D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 L201L231L261 349D06002 COIL-PEAKING L201L231L261 349D06005 COIL-FILTER L501 409P00605 COIL-FILTER L502 409C50601 H-L-WIDTH L503 409C 500601 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T530 336P00504 H-T-DRIVE T530 336P00504 H-T-DRIVE T530 336P00504 FBT T901 355P53001 TRANS T901 355P53001 TRANS-DRIVE T901 355P52801 TRANS-DRIVE	22פם	ıf	11	11
D924 27-P52601 # F114 9 TH901 264P08208 SCR CR02AM-2 D281D282D283 264P20901 DIODE RC-2 L201L231L261 349D06002 COIL-PEAKING L201L231L261 349D06002 COIL-FILTER L501 409P00605 COIL-FILTER L502 409C50601 H-L-WIDTH L503 409C 50601 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T530 336P00504 FBT T530 336P030504 FBT T530 336P31601 FBT T901 355P53001 TRANS T901 355P52801 TRANS-DRIVE	D923	264219303	11	MZ305B
TH901 264P08208 SCR CR02AM-2 D281D282D283 264P20901 DIODE RC-2	D924	274P52601	11	F1148
TH901 264P08208 SCR CR02AM-2 D281D282D283 264P20901 DIODE RC-2 - L201L231L261 349D06002 COIL-PEAKING - L501 409P00605 COIL-FILTER - L502 409C50801 E-L-WIDTH - L503 409C50801 COIL-LINEARITY - T501 336P00504 H-T-DRIVE - T502 409P50501 TRANS-H-O - T503 349C00902 T-PCC - T530 336P00504 H-T-DRIVE - T530 336P00504 H-T-DRIVE - T531 334P51801 FBT - T901 355P53001 TRANS - T902 355P5301 " - CT901 355P52801 TRANS-DRIVE - DT901 355P52801 TRANS-DRIVE -
D281D282D283 264P20901 DIODE RC-2 D281D282D283 264P20901 DIODE RC-2 L201L231L261 349D06002 COIL-PEAKING L501 409P00605 COIL-FILTER L502 409C51601 H-L-WIDTH L503 409C50R01 COIL-LINEARITY T501 336P00504 H-T-DRIVE T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T530 335F95301 FBT T901 355F5301 TRANS T902 355F95301 TRANS-CURRENT DT901 355F952801 TRANS-DRIVE	TH901	264P08208	SCR	CR02AM-2
D281D282D283 264P20901 DIODE RC-2
D281D282D283 264P20901 DIODE RC-2 L201L231L261 349D06002 COIL-PEAKING L501 409P00605 COIL-FILTER L502 409C51601 H-L-WIDTH L503 409C 50 R01 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 336P00504 H-T-DRIVE T530 336P00504 H-T-DRIVE T531 334P51804 FBT C1901 355P53001 TRANS T902 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE
L201L231L261 349D06002 COIL-PEAKING L201L231L261 349D06002 COIL-FILTER L501 409P00605 COIL-FILTER L502 409C51601 H-L-WIDTH L503 409C50801 COIL-LINEARITY TS01 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T530 336P00504 H-T-DRIVE T530 336P00504 FBT T901 355P53001 TRANS T902 355P5301 " T7901 355P52801 TRANS-CURRENT DT901 255P52801 TRANS-DRIVE	D281D282D283	264P20901	DIODE	RC-2
L201L231L261 349D06002 COIL-PEAKING L501 409P00605 COIL-FILTER L502 409C51601 H-L-WIDTH L503 409C50801 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409F50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T531 334P51801 FBT T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE
L201L231L261 349D06002 COIL-PEAKING L501 409P00605 COIL-FILTER L502 409C51601 H-L-WIDTH L503 409C 50801 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T531 354P51804 FBT T901 355P53001 TRANS T902 355P5301 " T901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE
L501 409P00605 COIL-FILTER L502 409C51601 H-L-WIDTH L503 409C50801 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T531 336P00504 FBT COULTONE T901 355P53001 TRANS T902 355P5301 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	L201L231L261	349D06002	COIL-PEAK	ING
L501 409P00605 COIL-FILTER L502 409C50801 H-L-WIDTH L503 409C50801 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T531 336P00504 H-T-DRIVE T531 335P53001 FBT CC T901 355P53001 TRANS T902 355P5301 T020 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE		•.
L502 409051601 H-L-WIDTH L503 409050801 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T531 334P51804 FBT T901 355P53001 TRANS T902 355P5301 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	L501	409200605	COIL-FILTER
L503 409C 50 801 COIL-LINEARITY T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T530 336P00504 H-T-DRIVE T531 334P51801 FBT T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	L502	409051601	H-L-WIDTH
T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T530 336P00504 H-T-DRIVE T531 334251801 FBT T901 355P53001 TRANS T902 355P5301 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	L503	409050801	COIL-LINEARITY
T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T531 S34P51804 FBT T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE
T501 336P00504 H-T-DRIVE T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T530 336P00504 H-T-DRIVE T531 334P51804 FBT T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE
T502 409P50501 TRANS-H-O T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T531 334P51801 FBT T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	T501	336200204	H-T-DRIVE
T503 349C00902 T-PCC T530 336P00504 H-T-DRIVE T531 334P51804 FBT T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	T502	409P50501	TRANS-H-O
T530 336P00504 H-T-DRIVE T531 334P51801 FBT T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	T503	349C00902	T-PCC
T530 336P00504 H-T-DRIVE T531 334P51801 FBT T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE
3331 334PS1801 FBT T901 355P53001 TRANS T902 355P5301 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	T530	336200504	E-T-DRIVE
T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE		334231801	FBT
T901 355P53001 TRANS T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE		·
T902 355P53 01 " CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	T901	355P53001	TRANS
CT901 355P52901 TRANS-CURRENT DT901 355P52801 TRANS-DRIVE	T902	355P53 01	11
DT901 355P52801 TRANS-DRIVE	CT901	355P52901	TRANS-CUR	RENT
	DT901	355P52801	TRANS-DRIVE
			······

Page 69

Table 6-1 PARTS LIST C-6479/C-6401

	SYMBOL	PART NO.	DES	SCRIPTION
		•
		•		····
	PR901	275250401	POSISTOR
	PR902	275250402	tt
				······································

	222222502280	102016200
	R229R259R289	103016200	R-MEIAL	JW-T.7K-0

	R421	103D15005	R-METAL	4W-47-J
	R434	103C07208	R-METAL	2W-1.8K-J
	R513	103C05108	19	3W-560 -K
	R516	- 109P01307	R-FUSE	1/2W-4.7-K
	R517	109D03809	R-WIRE	3W-1-K
	R518	109P01305	R-FUSE	1/2W-1.2-K
	R519	109P01307	Ħ	1/2W-4.7-K
	R520	109D51701	R-WIRE	3W-0.56-K
•;	R521,R522	103DI4001	R-METAL	1W-10-J
	R523	103D09109	. 11	2W-330-J
	R533	103C05208	18 **	3W-3.9K-J

		-


		102012000
	R908		R-METAL	4W-3.9K-J
·	R914	T03D03801	R-WIRE	3W-2.2-K
	\|
	\|	ż		······
			·····
	\|\|-

6-7

1. •

Page 70

Table 6-1 PARTS LIST C-64/9/C	C-6401

SYMBOL	PART NO.	DESCRIPTION
C411	185002709	C-ELECT.	100V 680MF
C511	189051006	C-PLASTIC-PP	1.2kV 8200PF
C517	189D07202	C-M-MF	200V 0.68M-K
C518
C531	189D07205	tt	200V 6.8M-K
C534	189050909	C-PLASTIC-PP	1.2xv 4700pF

			,
C537		C-ELECT.	50V 10ME
C544		C-ELECT.	507 3.3ME
C550		C-ELECT	16V 47MF
2909 C911	185D04803	C-ELECT	200V 470µF
C918	189D53207	17	160V 330µF
C916	180P04109	1/	160V47µF
C942	189P03303	C-M-POLY-AC	125V 0.1µF-M

			•

AG281 ~ AG286	224D01901	AIR-GAP	· ·


L901	409D52201	COIL-CHOKE
Ľ=901	499P50802	LINE-FILTER	FN332 C-6401
//	499P50702	19	FN322 C-6479
LF902	499950901

Page 71

SIMBUL	PART NO.	DESCRIPTIO	N
-	T947B4520 ∃	ASSY-PCB-MAIN-UNIT	C-3401
	T947B4520 5	11	C-5479
			·
	T947A4180 3	ASSY-POWER-UNIT	C-5401
	T947A4200 3	11	C-5479

	T927B32305	ASSY-PCB-CRT	C- 6401
	T927B32304	11	C- 5479

• •	T927B55601	ASSY-PCB-VIDEO	C-5401
	- T927B55602		C-5479


	T409C05205	COIL-DEGAUSSING

	-


		•

				_
				_

		\|

Table 6-1 PARTS LIST C-6479/C-6401

Page 72

SYMBOL	PART NO.	- DES	SCRIPTION
R539	103P14005	R-CARBON	1/2W-22-K
R555	103P30205	R-METAL	1/4W-1K-F
R558	103232209	R-CARBON	1/4W-2.2K-J
R559	103P32303	F.	1/4 ₩-4.7 K-J
R560	103P32309	u .	1/4W-15K-J
R561	103230305	R-METAL	1/4W-2.7X-F
R565	103₽32301	R-CARBON	1/4W-3.3K-J
VR531	129050706	VR-SF	1/2W-B-2K
VR532	129050706	VR-SF	1/2W-B-2K

Table 6-1 PARTS LIST C-6479/C-6401

1. ...................................

Page 73

SYMBOL	CRI NO,	MODEL NO.
CRI	4T1429LB22-TC12	C-6479
CRI	AT1439LB22-A-TC12	C-6479A
CBI	AT14292AB22-TC12	C-6479G
CRI	AT1429ZAB22-A-TC12	C-6479AG
CHI	AT1429LBL5-TC12	C-6479LP
CRI	AT1429LBL5-A-TC12	C-6479LPA
CRI	AT14292ABL5-TC12	C-6479LPG
CRT	AT1429ZABL5-A-TC12	C-6479LPAG

Table 6-2 CRT VARIATION LIST FOR C-6479

د. مراجع مع

Page 74

SYMBOL	CRT NO.	MODEL NO.
CRI	AT1429LB22-TC12	C-5401
CRI	AT1429LB22-A-TC12	C-6401A
CRI	AT1429ZAB22-TC12	C-6401G
CRT	AT1429ZAB22-A-IC12	C-6401AG
CRI	AT14291815-1C12	C-6401LP
CRI	AT1429LBL5-&-TC12	C-6401LPA
CRI	AT1429ZABL5-1C12	C-64C1LPG
CRT	AT1429ZABL5-A-TC12	C-6401LPAG

Table 6-2 CRI VARIATION LIST FOR C-6401

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. ....