Hyundai H-TV1402, H-TV2102, H-TV2101PF Service Manual

SERVICE MANUAL

FILE NO. SM-CTV-O-073

COLOR TELEVISION

SERVICE MANUAL

Factory MODEL NO. 37CTV3150/54CTV3152

Hyundai: H-TV1402, H-TV2102, H-TV2101PF

CHASSIS NO. EX-1A/1A1/1A2

Please read this manual carefully before service

PRINTED IN CHINA.OCT .2003 ©

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SERVICE MANUAL

TABLE OF CONTENTS

SPECIFICATIONS··················································································································1 SAFETY INSTRUCTIONS AND MAINTENANCE········································2

X-RAY RADIATION PRECAUTION ···································································································2 SAFETY PRECAUTION ····················································································································2 PRODUCT SAFETY NOTICE ···········································································································3 SAFETY SYMBOL DESCRIPTION ···································································································3 MAINTENANCE·································································································································4

ADJUSTMENTS······················································································································4 SET-UP ADJUSTMENTS ··················································································································4 CIRCUIT ADJUSTMENTS·················································································································7 CONTROL BUTTONS····································································································· 13 CONTROL BUTTONS ···················································································································· 13

REMOTE CONTROL······················································································································ 15

STRUCTURE AND CHASSIS FUNCTION DESCRIPTION··············· 23

STRUCTURE BLOCK DIAGRAM··································································································· 23 BLOCK DIAGRAM FOR SUPPLY VOLTAGE SYSTEM································································· 24 CHASSIS DESCRIPTION··············································································································· 25 SERVICE DATA···················································································································· 26 TECHNICAL DATA OF KEY ICS ···································································································· 26 WAVEFORMS OF KEY POINTS···································································································· 44 SERVICE DATA OF KEY ICS········································································································· 45

REPLACEMENT OF PARTS ·········································································································· 49

APPENDIX

1.CIRCUIT DIAGRAMS

2.PRINTED CIRCUIT BOARD DIAGRAMS

3.FINAL WIRING DIAGRAMS

4.FINAL ASSEMBLY DIAGRAMS

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SPECIFICATIONS

Model Number				37CTV3150		54CTV3152
			Color	PAL4.43, NTSC3.58, NTSC4.43,SECAM
			system
RF system
			Sound	D/K,I,M,B/G
			system
Video system				PAL4.43, NTSC3.58, NTSC4.43, PAL-M, PAL-N (50/60Hz)
			VHF	C1C12 (49.75-85.25MHz, 168.25-216.25MHz)
Receiving
			UHF	C13-C57 (471.25-863.25MHz)
channel			CATV	Z1-Z7 (111.0-167.0MHz)
				Z8-Z35 (223.0-447.0MHz)
Channels preset				236(0-235)
Antenna input				75 (unbalanced)
Picture	tube Effective
screen			dimensions	280 210mm		406 305mm
(Approx.)
Audio output				1W 2		3W+3W
(THD 7%)
Power source				150-250V ~, 50Hz
Weight (Approx.)				11.5kg		23kg
Dimensions				415 342 383mm		591 458 503mm
(W H D) (Approx.)
Rated power consumption				69W
220V AC 50Hz

Designs and specifications are subject to change without notice.

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INSTRUCTIONS FOR SERVICE SAFETY AND MAINTENANCE

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE X-RAY RADIATION PRECAUTION , SAFETY PRECAUTION AND PRODUCT SAFETY NOTICE INSTRUCTION BELOW.

X-RAY RADIATION PRECAUTION

1.The EHT must be checked every time the TV is serviced to ensure that the CRT does not emit X-ray radiation as result of excessive EHT voltage. The maximum EHT voltage permissible in any operating circumstances must not exceed the rated value. When checking the EHT, use the High Voltage Check procedure in this manual using an accurate EHT voltmeter.

2.The only source of X-RAY radiation in this TV is the CRT. The TV minimizes X-RAY radiation, which ensures safety during normal operation. To prevent X-ray radiation, the replacement CRT must be identical to the original fitted as specified in the parts list.

3.Some components used in this TV have safety related characteristics preventing the CRT from emitting X-ray radiation. For continued safety, replacement component should be made after referring the PRODUCT SAFETY NOTICE below.

4.Service and adjustment of the TV may result in changes in the nominal EHT voltage of the CRT anode. So ensure that the maximum EHT voltage does not exceed the rated value after service and adjustment.

SAFETY PRECAUTION

WARNING: REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY.

1.The TV has a nominal working EHT voltage of 25kV. Extreme caution should be exercised when working on the TV with the back removed.

1.1Do not attempt to service this TV if you are not conversant with the precautions and procedures for working on high voltage equipment.

1.2When handling or working on the CRT, always discharge the anode to the TV chassis before removing the anode cap in case of electric shock.

1.3The CRT, if broken, will violently expel glass fragments. Use shatterproof goggles and take extreme care while handling.

1.4Do not hold the CRT by the neck as this is a very dangerous practice.

2.It is essential that to maintain the safety of the customer all power cord forms be replaced exactly as supplied from factory.

3.Voltage exists between the hot and cold ground when the TV is in operation. Install a suitable isolating transformer of beyond rated overall power when servicing or connecting any test equipment for the sake of safety.

4.When replacing ICs, use specific tools or a static-proof electric iron with small power (below 35W).

5.Do not use a magnetized screwdriver when tightening or loosing the deflection yoke assembly to

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avoid electronic gun magnetized and decrement in convergence of the CRT.

6.When remounting the TV chassis, ensure that all guard devices, such as nonmetal control buttons, switch, insulating sleeve, shielding cover, isolating resistors and capacitors, are installed on the original place.

7.Replace blown fuses within the TV with the fuse specified in the parts list.

8.When replacing wires or components to terminals or tags, wind the leads around the terminal before soldering. When replacing safety components identified by the international hazard symbols on the circuit diagram and parts list, it must be the company-approved type and must be mounted as the original.

9.Keep wires away from high temperature components.

PRODUCT SAFETY NOTICE

CAUTION: FOR YOU PROTECTION, THE FOLLOWING PRODUCT SAFETY NOTICE SHOULD BE

READ CAREFULLY BEFORE OPERATING AND SERVICING THIS TV SET.

1.Many electrical and mechanical components in this chassis have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the X-ray radiation protection afforded by them cannot necessarily be obtained by using replacements rated at higher voltages or wattage, etc. Components which have these special safety characteristics in this manual and its supplements are identified by the international hazard symbols on the circuit diagram and parts list. Before replacing any of these components read the parts list in this manual carefully. Substitute replacement components which do not have the same safety characteristics as specified in the parts list may create X-ray radiation.

2.Do not slap or beat the cabinet or CRT, since this may result in fire or explosion.

3.Never allow the TV sharing a plug or socket with other large-power equipment. Doing so may result in too large load, causing fire.

4.Do not allow anything to rest on or roll over the power cord. Protect the power cord from being walked on, modified, cut or pinched, particularly at plugs.

5.Do not place any objects, especially heavy objects and lightings, on top of the TV set. Do not install the TV near any heat sources such as radiators, heat registers, stove, or other apparatus that produce heat.

6.Service personnel should observe the SAFETY INSTRUCTIONS in this manual during use and servicing of this TV set. Otherwise, the resulted damage is not protected by the manufacturer.

SAFETY SYMBOL DESCRIPTION

The lightning symbol in the triangle tells you that the voltage inside this product may be strong enough to cause an electric shock. Extreme caution should be exercised when working on the TV with the back removed.

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This is an international hazard symbol, telling you that the components identified by the symbol have special safety-related characteristics.

FDA This symbol tells you that the critical components identified by the FDA marking have special safety-related characteristics.

UL This symbol tells you that the critical components identified by the UL marking have special safety-related characteristics.

C UL This symbol tells you that the critical components identified by the C-UL marking have been evaluated to the UL and C-UL standards and have special safety-related characteristics.

VDE This symbol tells you that the critical components identified by the VDE marking have special safety-related characteristics.

MAINTENANCE

1.Install the TV set on a stable and level surface. Do not place the set near or over a radiator or heat register, or where it is exposed to direct sunlight.

2.Do not install the TV set in a place exposed to rain, water, excessive dust, mechanical vibrations or impacts.

3.Allow enough space (at least 10cm) between the TV and wall or enclosures for proper ventilation.

4.Slots and openings in the cabinet should never be blocked by clothes or other objects.

5.Please power off the TV set and disconnect it from the wall immediately if any abnormal condition are met, such as bad smell, belching smoke, sparkling, abnormal sound, no picture/sound/raster. Hold the plug firmly when disconnecting the power cord.

6.Unplug the TV set from the wall outlet before cleaning or polishing it. Use a dry soft cloth for cleaning the exterior of the TV set or CRT screen. Do not use liquid cleaners or aerosol cleaners.

ADJUSTMENTS

SET-UP ADJUSTMENTS

The following adjustments should be made when a complete realignment is required or a new picture tube is installed.

Perform the adjustments in the following order:

1.Color purity

2.Convergence

3.White balance

Notes:

The purity/convergence magnet assembly and rubber wedges need mechanical positioning.

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For some picture tubes, purity/ convergence adjustments are not required.

1.Color Purity Adjustment

Preparation:

Before starting this adjustment, adjust the vertical sync, horizontal sync, vertical amplitude and

focus.

1.1Face the TV set north or south.

1.2Connect the power plug into the wall outlet and turn on the main power switch of the TV set.

1.3Operate the TV for at least 15 minutes.

1.4Degauss the TV set using a specific degaussing coil.

1.5Set the brightness and contrast to maximum.

1.6Counter clockwise rotate the R /B low brightness potentiometers to the end and rotate the green low brightness potentiometer to center.

1.7Receive green raster pattern signals.

1.8Loosen the clamp screw holding the deflection yoke assembly and slide it forward or backward to display a vertical green zone on the screen. Rotate and spread the tabs of the purity magnet around the neck of the CRT until the green zone is located vertically at the center of the screen.

1.9Slowly move the deflection yoke assembly forward or backward until a uniform green screen is obtained.

1.10Tighten the clamp screw of the assembly temporarily. Check purity of the red raster and blue raster until purities of the three rasters meet the requirement.

Dummy Wedge

Deflection Coil

Rubber Wedge

	Adhesive
Purity/Convergence	Deflection Yoke
Magnet Module

Glass Cloth Tapes

Fig.1

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6-pole Magnet

4-pole Magnet

Fixed

Adjust the Angle (Vertical Lines)

	Rotate Two Tabs At the
	Same Time (Horizontal Lines)
Purity Magnet	Adjustment of Magnets
Convergence Magnet Assembly

Fig.2

2.Convergence Adjustment

Preparation:

Before attempting any convergence adjustment, the TV should be operated for at least 15 minutes. 2.1 Center convergence adjustment

2.1.1Receive dot pattern.

2.1.2Adjust the brightness/contrast controls to obtain a sharp picture.

2.1.3Adjust two tabs of the 4-pole magnet to change the angle between them and red and blue vertical lines are superimposed each other on the center of the screen.

2.1.4Turn both tabs at the same time keeping the angle constant to superimpose red and blue horizontal on the center of the screen.

2.1.5Adjust two tabs of the 6-pole magnet to superimpose red/blue line and green line.

2.1.6 Remember red and blue movement. Repeat steps2.1.3) 2..1.5) until optimal convergence is obtained.

2.2 Circumference convergence adjustment

2.2.1Loosen the clamp screw holding the deflection yoke assembly and allow it tilting.

2.2.2Temporarily put the first wedge between the picture tube and deflection yoke assembly. Move front of the deflection yoke up or down to obtain better convergence in circumference. Push the mounted wedge in to fix the yoke temporarily.

2.2.3Put the second wedge into bottom.

2.2.4Move front of the deflection yoke to the left or right to obtain better convergence in circumference.

2.2.5Fix the deflection yoke position and put the third wedge in either upper space. Fasten the deflection yoke assembly on the picture tube.

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2.2.6Detach the temporarily mounted wedge and put it in either upper space. Fasten the deflection yoke assembly on the picture tube.

2.2.7After fastening the three wedges, recheck overall convergence and ensure to get optimal convergence. Tighten the lamp screw holding the deflection yoke assembly.

BLU Red

Red/BLU GRN

BLU

Red

Red/BLU

GRN

4-pole Magnet Movement 6-pole Magnet Movement

Center Convergence by Convergence Magnets

Incline the Yoke up (or down) Incline the Yoke Right(or left)

Circumference Convergence by DEF Yoke

Fig. 3

3.White Balance Adjustment

Generally, white balance adjustment is made with professional equipment. It’s not practical to get good white balance only through manual adjustment. For TVs with I2C bus control, change the bus data to adjust white balance.

CIRCUIT ADJUSTMENTS

Preparation:

Circuit adjustments should be made only after completion of set-up adjustments.

Circuit adjustments can be performed using the adjustable components inside the TV set. For TVs with I2C bus control, first change the bus data.

1.Degaussing

A degaussing coil is built inside he TV set. Each time the TV is powered on, the degaussing coil will automatically degauss the TV. If the TV is magnetized by external strong magnetic field, causing color spot on the screen, use a specific degausser to demagnetize the TV in the following ways. Otherwise, color distortion will be shown on the screen.

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1.1Power on the TV set and operate it for at least 15 minutes.

1.2Receive red full-field pattern.

1.3Power on the specific degausser and face it to the TV screen.

1.4Turn on the degausser. Slowly move it around the screen and slowly take it away from the TV.

1.5Repeat the above steps until the TV is degaussed completely.

2.Supply Voltage Adjustment

Caution: +B voltage has close relation to high voltage. To prevent X-ray radiation, set +B voltage to the rated voltage.

2.1Make sure that the supply voltage is within the range of the rated value.

2.2Connect a digital voltmeter to the +B voltage output terminal of the TV set. Power on the TV and set the brightness and sub-brightness to minimum.

2.3Regulate voltage adjustment components on the power PCB to make the voltmeter read 115±1V.

3.High Voltage Inspection

Caution: No high voltage adjustment components inside the chassis. Please perform high voltage inspection in the following ways.

3.1Connect a precise static high voltmeter to the second anode (inside the high voltage cap) of the picture tube.

3.2Plug in the supply socket (220V, AC) and turn on the TV. Set the brightness and contrast to minimum (0A).

3.3The high voltage reading should be less than the EHT limitation.

3.4Change the brightness from minimum to maximum, and ensure high voltage not beyond the limitation in any case.

Nominal EHT voltage: 26.50.8KV Limited EHT voltage: 29KV(For 54CTV3152 only) Nominal EHT voltage: 21.51.5KV Limited EHT voltage: 25 KV(For 37CTV3150 only)

4.Focus Adjustment

Caution: Dangerously high voltages are present inside the TV. Extreme caution should be exercised when working on the TV with the back removed.

4.1After removing the back cover, look for the FBT on the main PCB. There should be a FCB on the FBT.

4.2Power on the TV and preheat it for 15 min.

4.3Receive a normal TV signal. Rotate knob of the FCB until you get a sharp picture.

5. Safety Inspection

5.1 Inspection for insulation and voltage-resistant

Perform safety test for all naked metal of the TV. Supply high voltage of 3000V AC, 50Hz (limit current of 10mA) between all naked metal and cold ground. Test every point for 3 min. and ensure no arcing and sparking.

5.2 Requirements for insulation resistance

Measure resistance between naked metal of the TV and feed end of the power cord to be infinity with a DC-500 high resistance meter and insulation resistance between the naked metal and

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SERVICE MANUAL

degaussing coil to be over 20M.

6. DESIGN/SERVICE mode

6.1 To enter the USER SERVICE mode

Caution: The user service mode adjustment can be changed only when service personnel adjust the whole set data during servicing. As the control data have dramatic effects on functions and performance of the TV, service personnel should not tell user how to

enter the SERVICE mode to avoid improper data settings.		S
6.1.1 Set the volume to 0. Then press and hold the MUTE button on		VS 0-3F 25
the remote control, and press the MENU button on the TV to		xxxxxxxx
enter the SERVICE mode. (In this case, the S mode cannot be
stored in the EEPROM. To exit from the S mode, turn off the TV set. )

6.1.2After entering the S mode, RedS is displayed on the upper center of the screen and MENU1 is default. Use the POS+/- buttons to highlight an adjustment and the VOL+/- buttons to adjust it. The adjusted data are immediately output and stored in the EEPROM

6.2 Bus data in the S mode

Item		Bus Data			Description	Remarks
5PAR/6PAR	1F				Parallelogram correction (for large-screen only)
5BOW/6BOW	1F				Curve correction (for large-screen only)
5HSH/6HSH	Set	to	the	optimal	Horizontal center in the TV mode for 50Hz/60Hz	*
	mode				For 50Hz, 5HSH is displayed for 60Hz, 6HSH
					is displayed.
5HSR/6HSR	Set	to	the	optimal	Horizontal center in the RGB mode for 50Hz/60Hz	*
	mode				For 50Hz, 5HSR is displayed for 60Hz, 6HSR
					is displayed.
5EWP/6EWP	1F				East-West parabola correction (for large-screen only)
5EWW/6EWW	1F				East-West correction (for large-screen only)
5UCR/6UCR	1F				Upper corner parabola correction (for large-screen
					only)
5LCR/6LCR	1F				Lower corner parabola correction (for large-screen
					only)
5EWT/6EWT	1F				Trapezoidal correction (for large-screen only)
5VSL/6VSL	1F				Vertical slope (for large-screen only)	*
5VAM/6VAM	1F				Vertical amplitude	*
					For 50Hz, 5VAM is displayed for 60Hz, 6VAM
					is displayed.
5SCL/6SCL	Set	to	the	optimal	S correction	*
	mode
5VSH/6VSH	Set	to	the	optimal	Vertical center	*
	mode
5VOF/6VOF	Set	to	the	optimal	OSD vertical center	*
	mode

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VX	19	Vertical zoom (for large-screen only)
RED	20	Red gun cutoff voltage	*
GRN	20	Green gun cutoff voltage	*
WPR	1F	Red gun drive voltage	*
WPG	1F	Green gun drive voltage	*
WPB	1F	Blue gun drive voltage	*
YDFP	07	PAL brightness delay time
YDFN	07	NTSC brightness delay time
YDFS	0F	SECAM brightness delay time
YDAV	0F	AV brightness delay time
TOP	1C	UOC AGC	*
VOL	32	UOC audio output amplitude	*
IFFS	03 02	PIF (02-38.9MHz, 03-38MHz)
HDOL	00	Cathode drive level
AGC	01	IF ACG speed
VG2B	30	VG2 brightness	*
SBRI	1F	Sub brightness
MBRI	2F	Max. brightness
SCON	20	Sub contrast
MCON	39	Max. contrast
SCOL	32	Sub color
OP1	01	Option set byte 1	54CTV3152
			only
OP2	FF	Option set byte 2
OP3	09	Option set byte 3
OP4	FF	Option set byte 4
OP5	76	Option set byte 5
OP6	3C	Option set byte 6
INIT		EEPROM initialization
VG2		Adjusting screen voltage with VG2
VSD		Vertical output off
USER_LOGO		User logo write-in (valid when OP-USER-LOGO is 1)
STS0/1/2		System status byte

Notes:

The data marked with *have been adjusted in the MANUFACTURE mode. Take care when in service and adjustment.

To write in logo, use the /buttons to highlight an adjustment and the / buttons to adjust.

The data sheet may differ dependent on different models.

The data sheet may differ dependent on different CRTs for the same model.

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6.3Option set

With remote control system software TDA935X, all options can be set in the SERVICE mode and stored in EEPROM. Data related to picture, sound and geometric adjustment are also stored in EEPROM.

	Bit	Item		Description	Default
OP1	0	OP_HOTEL	HOTEL mode		1
	1	OP_236	100/236 programs preset		0
	2	OP_NTSC	NTSC option set		1
	3	OP_AV2	Two set of AV terminals: 1-With AV2; 0-Without AV2		1A1-1
					1A/1A2-0
	4	OP_SVHS	S-Video terminal		1A1-1
					1A/1A2-0
	5	OP_DVD	DVD		1A1-1
					1A/1A2-0
	6	OP_RGB	RGB:	1- RGB 0-No	1A1-0
					1A/1A2-1
	7	OP_OSO	Switch off in vertical overscan		0
OP2	0	OP_AVL	AVL		1
	1	OP_AUTO_SOUND	Auto sound system test		1
	2	OP_NOT_1	National Option Set (OP_NOT_3/2/1) 1XX-Arabic		0
	3	OP_NOT_2	011-Farsi 010-Russian 001-Ukrainian 000-Paneuro		0
	4	OP_NOT_3			0
	5	OP_USER_LOGO	User logo prior to CHANGHONG logo		0
	6	OP_ON_BACK	Auto test	background options when power-on:	0
			0-black; 1-blue
	7	OP_FSL	Slicing level for vertical sync		0
OP3	0	OP_ENGLISH	English		1
	1	OP_FARSI	Farsi		1
	2	OP_ARABIC	Arabic		1
	3	OP_RUSSIAN	Russian		1
	4	OP_FRENCH	French		1
	5	OP_GERMAN	German		1
	6	OP_INDIA	Indonesian		1
	7	OP_MALAYSIA	Malay		1

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						(continued)
OP4	0	OP_FMWS	Window selection of sound pll: small/large window			0
	1	OP_DIRECT_SWIT	Memory power-on (If turned off by the remote			1
		CH_ON	control, then the TV is turned on by the remote
			control; if turned off by the MAIN POWER SWITCH,
			then turned on by the MAIN POWER SWITCH.)
	2	OP_HCO	EHT tracking mode			0
	3	OP_CHH_LOGO	User logo	display	1-Displayed without signal	1
			reception	0-No
	4	OP_SOUND_DK	Sound system-DK option set			1
	5	OP_SOUND_BG	Sound system-BG option set			0
	6	OP_SOUND_I	Sound system-I option set			1
	7	OP_SOUND_M	Sound system-M option set			1
OP5	0	OP_TUNER	Tuner 1-Philips Tuner		0-Panasonic Tuner	0
	1	OP_AUTO_LANG0	Auto language option set: English - Farsi - Arabic -			1
	2	OP_AUTO_LANG1	Russian - French - German - Indonesian - Malay			0
	3	OP_AUTO_LANG2				0
	4	OP_FORF	Field frequency options (OP_FORS/FORF):			0
	5	OP_FORS	00-Auto60Hz, 01-KeepLast 10-Force60Hz,			0
			11-Auto50Hz
	6	OP_AVON	If AV off, then AV on			1
	7	OP_ONPOSITION	With HOTEL mode preset, on position is fixed to			0
			POS1.
OP6	0	OP_AUTOTEST	Auto test when power-on			0
	1	OP_PSNS	Sensitivity			0
	2	OP_BSCREEN	Black screen when changing channels: 1-yes 0-No			1
	3	OP_SECAM	1: SECAM option			1
	4	OP_DFL	Disable flash protection			0
	5	OP_SIF	External input for sound IF circuit			1
	6	OP_EXT_SIF0	Sound system options for external circuit: 00-DK,			1
	7	OP_EXT_SIF1	01-BG, 10-I, 11-M			0
			(Valid when OP_SIF = 1)

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CONTROL BUTTONS

1 CONTROL BUTTONS

37CTV3150

Front panel

MAIN POWER SWITCH

INFRARED SENSOR

POWER INDICATOR

TV/AV MENU

- VOL +

- CH +

	MENU SELECT				POSITION DOWN/UP
TV/AV	SELECT VOLUME DOWN/UP

Rear panel

ANTENNA IN

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54CTV3152

Front panel

		MAIN POWER SWITCH
	OPEN THE DOOR	INFRARED SENSOR
		POWER INDICATOR

TV/AV SELECT VOLUME DOWN/UP

MENU SELECT POSITION DOWN/UP

Rear panel

ANTENNA IN

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