SONY KV2972U, KVA254, KVA2541K, KVA2542, KVA2542U Service manual & schematics

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Page 1

SERVICE MANUAL

AE-2B CHASSIS

MODEL	COMMANDER	DEST.	CHASSIS NO.	MODEL	COMMANDER	DEST.	CHASSIS NO.
KV-X2971A	RM-831	Italian	SCC-G59A-A	KV-X2973E	RM-831	Spanish	SCC-G56A-A
KV-X2971B	RM-831	French	SCC-G57A-A	KV-X2971K	RM-831	OIRT	SCC-G73A-A
KV-X2971D	RM-831	AEP	SCC-G45A-A	KV-X2972U	RM-831	UK	SCC-G55A-A

Page 2

ITEM MODEL	DEL Television System Stereo System Channel Coverage		Channel Coverage	Color System
Italian	B/G/H, D/K	GERMAN Stereo	ITALIA VHF:A-H2 (C) UHF: 21-69 PAL B/G/H VHF:E2-E12 UHF:E21-E69 CABLE TV (1):S1-S41 CABLE TV (2):S01-S05, M1-M10, U1-U10 D/K VHF:R01-R12 UHF:R21-R69	PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)
French	B/G/H, D/K L, I	GERMAN Stereo	L VHF:F02-F10 UHF:F21-F60 CABLE:B-Q B/G/H VHF:E2-E12 UHF:E21-E69 CABLE TV (1):S1-S41 CABLE TV (2):S01-S05, M1-M10, U1-U10 ITALIA VHF:A-H2 (C) UHF:21-69 I UHF:B21-B69	PAL, SECAM NTSC4.43, NT SC3.58 (VIDEO IN)
AEP	B/G/H, D/K	GERMAN Stereo	PAL B/G/H VHF:E2-E12 UHF:E21-E69 CABLE TV (1):S1-S41 CABLE TV (2):S01-S05, M1-M10, U1-U10 ITALIA VHF:A-H2 (C) UHF:21-69 D/K VHF:R01-R12 UHF:R21-R69	PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)
Spanish	B/G/H, D/K	GERMAN/NICAM Stereo	PAL B/G VHF:E2-E12 UHF:E21-E69 CABLE TV (1):S1-S41 CABLE TV (2):S01-S05, M1-M10, U1-U10 ITALIA VHF:A-H2 (C) UHF:21-69 D/K VHF:R01-R12 UHF:R21-R69	PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)
OIRT	B/G/H, D/K	GERMAN Stereo	B/G/H VHF:E2-E12 UHF:E21-E69 CABLE TV (1):S1-S41 D/K VHF:R01-R12 UHF:R21-R69	PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)
UK	I	NICAM Stereo	UHF : B21-B69	PAL: SECAM NTSC4.43, NTSC3.58 (VIDEO IN)

MODEL	Italian	French	AEP	Spanish	OIRT	UK
Power Consumption	112W	125W	130Wh	133Wh	130Wh	186W

SPECIFICATIONS

Picture Tube

Super Trinitron Approx. 72 cm (29 inches) (Approx. 68 cm picture measured diagonally) 110° -deflection

Input/Output Terminals

[REAR]

Ö-1 21-pin Euro connector (CENELEC standard)

inputs for audio and video signals
inputs for RGB
outputs of TV video and audio signals
G-2/€ 2 21-pin Euro connector
inputs for audio and video signals
inputs for S video
outputs for audio and video signals (selectable)
G Audio outputs (variable) phono jacks

[FRONT]

O 3 Video input - phono jack O Audio inputs - phono jacks O 3S video input 4-pin DIN Ω Headphone jacks : stereo minijack

Power requirements Dimensions Weight Supplied accessories

2 x 12W (RMS) 2 x 30W (Music) 220 - 240V Approx. 676x557x528 mm Approx. 48kg RM-831 Remote Commander (1) IEC designation R6 battery (1) NICAM FASTEXT

Other features

Sound output

[RM-831]

Dimensions Weight

Remote control system Power requirements

infrared control 1.5V dc 1 battery IEC designation R6 (size AA) Approx. 65x225x21 mm (w/h/d) Approx. 157g (Not including batteries)

Design and specifications are subject to change without notice.

Page 3

Model name	KV-X2971A	KV-X2971B	KV-X2971D	KV-X2973E	KV-X2971K	KV-X2972U
Item
Pal Comb	OFF	OFF	OFF	OFF	OFF	OFF
PIP	OFF	OFF	OFF	OFF	OFF	OFF
RGB Priority	ON	ON	OFF	OFF	OFF	OFF
Woofer Box	OFF	OFF	OFF	OFF	OFF	OFF

Scart 1	ON	ON	ON	ON	ON	ON
Scart 2	ON	ON	ON	ON	ON	ON
Front in (3)	ON	ON	ON	ON	ON	ON
Scart 4	OFF	OFF	OFF	OFF	OFF	OFF
Dyn. Convergence	OFF	OFF	OFF	OFF	OFF	OFF
Projector	OFF	OFF	OFF	OFF	OFF	OFF
AKB in 16:9 mode	ON	ON	ON	ON	ON	ON
Norm B/G	ON	ON	ON	ON	ON	OFF
Norm I	OFF	ON	OFF	OFF	OFF	ON
Norm D/K	ON	ON	ON	ON	ON	OFF
Norm AUS	OFF	OFF	OFF	OFF	OFF	OFF
Norm L	OFF	ΟŃ	OFF	OFF	OFF	OFF
Norm SAT	OFF	OFF	OFF	OFF	OFF	OFF
Norm M	OFF	OFF	OFF	OFF	OFF	OFF

Language Preset	Italiano	Français	Deutsch	None	OIBT	English

WARNING (KV-X2972U only)

The flexible mains lead is supplied connected to a B.S. 1363 fused plug having a fuse of 5 AMP capacity. Should the fuse need to be replaced, use a 5 AMP FUSE approved by ASTA to BS 1362, ie one that carries the mark.

one that carries the YM mark. IF THE PLUG SUPPLIED WITH THIS APPLIANCE IS NOT SUITABLE FOR YOUR SOCKET OUTLETS IN YOUR HOME. IT SHOULD BE CUT OFF AND AN APPROPRIATE PLUG FITTED. THE PLUG SEVERED FROM THE MAINS LEAD MUST BE DESTROYED AS A PLUG WITH BARED WIRES IS DANGEROUS IF ENGAGED IN A LIVE SOCKET OUTLET. When an alternative type of plug is used it should be fitted with a 5 AMP FUSE, otherwise the circuit should be protected by a 5 AMP FUSE at the distribution board.

Fuse

How to replace the fuse. Open the fuse compartment with the screwdriver blade and replace the fuse.

For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd, Chinnor Oxon OX9 4QY Tel:- 01844-351694 Fax:- 01844-352554 Fmail:- enguides@mauriton.co.uk

Page 4

SECTION 3

SET-UP ADJUSTMENTS

When complete readjustment is necessary or a new picture tube is installed, carry out the following adjustments.
Unless there is specific instruction to the contrary, carry out these adjustments with the rated power supply.
Unless there is specific instruction to the contrary, set the controls and switches this way :

• Contrast ....................................

& Brightness ...................................

Preparations :

In order to reduce the influence of geomagnetism on the set's picture tube face it east or west.
Switch on the set's power and degauss with the degausser.

3-1. BEAM LANDING

Input the white signal with the pattern generator. Contrast Brightness
- Brightness J
2. Position neck assy as shown in Fig.3-2.
3. Set the pattern generator raster signal to red.
4. Move the deflection yoke to the rear and adjust with the purity control so that the red is at the center and the blue and the green take up equally sized areas on each side. (See Fig.3-1 - 3-3)
5. Move the deflection yoke forward and adjust so that entire screen is red. (See Fig.3-1)
6. Switch the raster signal to blue, then to green and verify the condition.
7. When the position of the deflection yoke has been decided, fasten the deflection yoke with the screws.
8. If the beam does not land correctly in all the corners, use a magnet to adjust it. (See Fig.3-4)

Fig.3-1

Carry out the following adjustments in this order :
1. Beam landing
2. Convergence
3. Focus
4. White balance

Note: Testing equipment required.

1. Color bar/pattern generator
2. Degausser
3. DC power supply
4. Digital multimeter
5. Oscilloscope

Page 5

3-2. CONVERGENCE

Preparations :

Before starting this adjustment, adjust the focus, horizontal size, and vertical size.
Minimize the brightness setting.
Provide dot pattern.

(1) Horizontal and vertical static convergence

1. (Moving horizontally), adjust the H.STAT control so that the red, green, and blue points are on top of each other at the center of the screen.
2. (Moving vertically), adjust the V.STAT magnet so that the red, green, and blue points are on top of each other at the center of the screen.
If the H.STAT variable resistor cannot bring the red, green, and blue points together at the center of the screen, adjust the horizontal convergence with the H.STAT variable resistor and the V. STAT magnet in the manner given below. (In this case, the H.STAT variable resistor and the V.STAT magnet influence each other)

Tilt the V.STAT magnet and adjust the static convergence by opening or closing the V.STAT magnet.

4. If the V.STAT magnet is moved in the direction of the (a) and (b) arrows, the red, green, and blue points move as shown below.

For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd, Chinnor Oxon OX9 4QY Tel:- 01844-351694 Fax:- 01844-352554 Email:- enquiris@mauritimn.co.uk

Page 6

• Operation of BMC (Hexapole) Magnet

• The respective dot positions resulting from moving each magnet interact, so be sure to perform adjustment while tracking.

Use the H.STAT VR to adjust the red, green, and blue dots so they coincide at the center of screen (by moving the dots in the horizontal direction).

(2)Dynamic convergence adjustment Preparations :

Before starting this adjustment, adjust the horizontal static convergence and the vertical static convergence.
1. Slightly loosen the deflection yoke screws.

2. Remove the deflection yoke spacer.
3. Move the deflection yoke as shown in the figure below and optimize the convergence.
4. Tighten the deflection yoke screws.
5. Install the deflection yoke spacer.

Page 7

(3) Screen corner convergence

If you cannot adjust corner convergence properly, correct them with permalloy.

a b a-d : screen-corner convergence defect c d

3-3. FOCUS

Adjust the focus to optimize the screen

3-4. WHITE BALANCE

Screen G2 Setting

1. Input the dot signal from the pattern generator.
2. Set the picture brightness control to its lowest level.
3. Apply 180V DC to the R,G, and B cathodes with an external power supply.
While watching the picture, adjust G 2 control RV 701 (Screen) to the point just before the return lines disappear.

White balance adjustment

1. Receive all-white signal

2. Enter into service mode. (Refer to the section 4 "Electrical Adjustment" to how to enter service mode.)
3. Select CXA1587S on menu


09	SUB BRIGHT	ADJ.
10	SUB HUE	7
11	VM LEVEL	2
12	NR LEVEL	0
13	ABL MODE	0
14	G-DRIVE	ADJ.
15	B-DRIVE	ADJ.
16	G-AUTO CUT OFF	ADJ.
17	B-AUTO CUT OFF	ADJ.
18	R-MANUAL CUT OFF	ADJ.
19	G-MANUAL CUT OFF	ADJ.
20	B-MANUAL CUT OFF	ADJ.

4. Set picture to MAX.

5. Adjust G-DRIVE B-DRIVE with I , I buttons so that the white balance becomes optimum.

6. Press OK button to write the data for each item.

7. Set picture to MIN.
8. Adjust G-AUTO CUT OFF, B-AUTO CUT OFF, R -MANUAL CUT OFF, G-MANUAL CUT OFF and B-MANUAL CUT OFF with I, buttons so that the white balance becomes optimum.

9. Press OK button to write the data for each item.

For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd, Chinnor Oxon OX9 4QY Tel: 01844-351694 Fax: 01844-352554 Email: enouiries@mauritron.co.uk

Page 8

SECTION 4 CIRCUIT ADJUSTMENTS

4-1. ELECTRICAL ADJUSTMENTS

Service adjustment to this model can be performed with the supplied remote commander RM-831

HOW TO ENTER INTO SERVICE MODE

1. Turn on the main power switch of the set while pressing any two buttons on the front panel.

"TT" will appear at the upper right corner of the screen.

3. Press the MENU button on the remote commander to obtain the menu on the screen.

Fig.4-4

4. Press the ▲ and ➤ buttons on the remote commander and move > to DEMO.
5. Press OK button to proceed to the next menu
The menu of fig. 4-5 will appear on the screen. Select the DEVICE corresponding to the adjustment item from the table on the next page.

7. If adjustment item is CXA1587, press the button and move > to CXA1587. □

CXA1587
Item No	Adjustment item	Data Amount
01	PICTURE	53
02	COLOR	31
03	BRIGHT	31
04	HUE	31
05	SHARPNESS	12
06	RGB PICTURE	7
07	SUB CONTRAST	ADJ.
08	SUB COLOR	ADJ.
09	SUB BRIGHT	ADJ.
10	SUB HUE	8
11	VM LEVEL	2
12	NR LEVEL	0
13	ABL MODE	0
14	G-DRIVE	ADJ.
15	B-DRIVE	ADJ.
	CXA1587 Item No 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15	CXA1587Item NoAdjustment item01PICTURE02COLOR03BRIGHT04HUE05SHARPNESS06RGB PICTURE07SUB CONTRAST08SUB COLOR09SUB BRIGHT10SUB HUE11VM LEVEL12NR LEVEL13ABL MODE14G-DRIVE15B-DRIVE

8. Press OK button to get the next selection menu.
Press ▼ button and move > to the adjustment item and press OK button.
Press ★ and ★ buttons to change the data in order to comply with each standard.
11. Press OK button to write data
12. Turn off the power to quit service mode when adjustments are completed.

Page 9

CXA1587

Item No	Adjustment item.	Data Amount
01	PICTURE	53
02	COLOR	31
03	BRIGHT	31
04	HUE	31
05	SHARPNESS	12
06	RGB PICTURE	7
07	SUB CONTRAST	ADJ.
08	SUB COLOR	ADJ.
09	SUB BRIGHT	ADJ.
10	SUB HUE	8
11	VM LEVEL	2
12	NR LEVEL	0
13	ABL MODE	0
14	G-DRIVE	ADJ.
15	B-DRIVE	ADJ.
16	G-AUTO CUT OFF	ADJ.
17	B-AUTO CUT OFF	ADJ.
18	R-MANUAL CUT OFF	ADJ.
19	G-MANUAL CUT OFF	ADJ.
20	B-MANUAL CUT OFF	ADJ.
21	GAMMA LEVEL	8
22	DC TRANSFER RATIO	3
23	DYNAMIC PICTURE	2
24	Y FILTER ADJ	ADJ.
25	Y DELAY TIME	15
26	Y DELAY SWITCH 1	0
27	Y DELAY SWITCH 2	1
28	SHARPNESS LIMIT	ON
29	TRAP	OFF
30	H SHIFT	36
31	DA TEST	ON
32	PRE/OVER	12
33	SUB FOCUS	2
34	SUB SHARPNESS	- 3
35	R MUTE	OFF
36	G MUTE	OFF
37	B MUTE	OFF
38	AGING 1 WHT	OFF
39	AGING 2 BLK	ON
40	AKB OFF	ON
41	INHIBIT RGB	ON
42	FORCED RGB	OFF
43	V/2 V	OFF
44	AXIS	PAL
45	HUE OFF	OFF
46	V EXTENSION	OFF
47	AFC 1	1
48	AFC 2	0
49	AFC	OFF
50	REF. POSITION	0

CXD2018

KV-X297

Item No	Adjustment item.	Data Amount
01	V SIZE	ADJ.
02	V SHIFT	ADJ.
03	SCORRECTION	ADJ.
04	V LINEARITY	ADJ.
05	H SIZE	ADJ.
06	PIN AMP	ADJ.
07	TILT	ADJ.
08	UPPER CORNER	ADJ.
09	LOWER CORNER	ADJ.
10	V BOW	ADJ.
11	ANGLE	ADJ.
12	HV COMP. V	12
13	HV COMP. H	8
14	FRAME SHIFT	OFF
15	FREE RÜN 60 Hz	OFF
16	SYSTEM 60 Hz	OFF
17	ASPECT WIDE	OFF
18	DOUBLE SCAN	OFF
19	INTERLACE	ON
20	H SHIFT	26
21	N/S CORRECTION	ADJ.

Typical On Screen Display based values when receiving PAL Phillips pattern.


TDA6612	ADJ
Stereo-Separation	(31)

Should be adjusted twice, once for 4 : 3 and once for 16 : 9 mode

For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd, Chinnor Oxon OX9 4QY Tel:-01844-351694 Fax: 01844-352554 Email:-enquiries@mauritron.co.uk

_______________________________________

Page 10

Y FILTER ADJUSTMENT

.1. Input a PAL RED pattern.
Connect an oscilloscope to pin (1) of CN0403 (R OUT) on C board.
Enter into service mode and press 3,8.
Adjust data by △ or ∇ to minimize the chroma element at CN0403 pin (1).

SUB BRIGHTNESS ADJUSTMENT

1. Input a Phillips pattern.
2. Enter into service mode and press 23.
3. Adjust data so that 0-IRE of grey scale and CUT-OFF 20-IRE are only slightly visible on screen.

SUB CONTRAST ADJUSTMENT

1. Input a video that contains a small 100% area on a Black Background.
2. Enter into service mode and press 01 to have PIC max followed by 21.
3. Connect oscilloscope to pin (1) of CN0403 (R OUT) and adjust data to obtain 2.5Vp-p.

SUB COLOR ADJUSTMENT

1. Input a PAL color bar signal.
2. Connect an oscilloscope to pin (3) of CN0403 (B OUT) on the C board.
3. Enter into service mode and press 22 of CXA1587, 8 SUB COLOR.
Adjust data so that the right sides of the waveform are set to the same level.

STEREO-SEPARATION ADJUSTMENT

Input a 1kHz stereo signal to the L-ch and a 400Hz stereo signal to the R-ch.
2. Enter into service mode and press 19
3. Adjust data so that sound is not detected in the Right-ch and the Left-ch.

DRIVE AND CUT-OFF

See direct test mode list attached and refer to sub brightness or such for adjustment method.

Page 11

DEFLECTION SYSTEM ADJUSTMENT

1. Enter into service mode and select CXD2018.
Select and adjust each item in order to obtain the optimum image.

CXD2018
Item No	Adjustment item.	Data Amount
01	V SIZE	ADJ.
02	V SHIFT	ADJ.
03	S CORRECTION	ADJ.
04	V LINEARITY	ADJ.
05	H SIZE	ADJ.
06	PIN AMP	ADJ.
07	TILT	ADJ.
08	UPPER CORNER	ADJ.
09	LOWER CORNER	ADJ.
10	V BOW	ADJ.
11	ANGLE	ADJ.
12	HV COMP. V	12
13	HV COMP. H	8
14	FRAME SHIFT	OFF
15	FREE RUN 60 Hz	OFF
16	SYSTEM 60 Hz	OFF
17	ASPECT WIDE	OFF
18	DOUBLE SCAN	OFF
19	NON INTERLACE	ON
20	H SHIFT	26
21	N/S CORRECTION	ADJ.

UPPER CORNER PIN

ANGLE

3. Press OK button to write data.

If the menu display prevents accurate adjustment, press to clear, to resume, press once again.

For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd, Chinnor Oxon OX9 4QY Tel:-01844-351694 Fax:-01844-352554 Email:-enquiries@mauritron.co.uk

Page 12

4-2. VOLUME ELECTRICAL ADJUSTMENTS

+B (+135V) ADJUSTMENT (RV601)

PULSE WIDTH & V-PIN ADJUSTMENTS (RV 1851/1853)

1. Switch on the power to the TV set.
Connect a digital multi-meter to pin (1) of CN0529 on D board.
3. Adjust RV601 on D board to +135V ± 0.5V.

AGC ADJUSTMENT (IF BLOCK)

1. Receive an off-air signal.
Adjust the AGC VR so that there is no snow noise or cross-modulation visible on the screen
3. Change the receiving channel and confirm status.

1. Connect an oscilloscope to pin (2) of T1851.
Preset RV-1853 to center of its range (mechanical center).
Adjust RV-1851 to obtain minimum amplitude.
Switch the oscilloscope input to D.C.and adjust RV-1853 to obtain -33.2 ± 0.5V.

Page 13

4-3. TEST MODE 2:

Is available by pressing Test button twice, OSD 'TT' appears. The functions described below are available by pressing the two numbers. To release the Test Mode 2, press 0 twice, or switch the TV into Stand-by Mode.

00	switch Test Mode 2 off
01	picture maximum
02	picture minimum
03	Volume 35%
04	Volume 50%
05	Volume 65%
06	Volume 80%
07	Ageing Condition (Volume min., Picture max., Brightness max., Ageing 2 Mode of CXA1587, TDA2595 is locked to CXA1587 via PIN 34 of µ-Con.)
08	Shipping Condition (Analog Values are RESET due to factory setting, Prog 1 is selected, TT Mode is switched off)
09	dummy
10	Tenth entry is deleted
11	Balance
12	Hue
13	Display of Software Version and TV set configeration
14	Adjustment of N/S Correction
15	Read factory setting from NVM Reads Volume, Balance, Treble, Bass, Brightness, Contrast, Hue, Sharpness, Colour values from ROM to the actual used values (Last Power Memory)
16	Save actual used values as RESET values Memorize actual used values Balance, Treble, Bass, Hue, Sharpness at RESET position in NVM.
17	Preset Level for AV Sources
18	dummy
19	Stereo Seperation
20	Tenth entry is deleted
21	Sub Contrast
22	Sub Colour
23	Sub Brightness
24-29	dummy


30	Tenth entry is deleted
31	Green Drive
32	Blue Drive
33	Green Cut Off (Auto Cut Off)
34	Blue Cut Off (Auto Cut Off)
35	Red Cut Off (Manual Cut Off) (Auto Cut Off is switched off)
36	Green Cut Off (Manual Cut Off) (Auto Cut Off is switched off)
37	Blue Cut Off (Manual Cut Off) (Auto Cut Off is switched off)
38	Y-Filter adjustment (Trap is switched off and TDA9145 is switched in forced NTSC Mode)
39	dummy
40	Tenth entry is deleted
41	Default setting of CXA1587 (Only available in Prog 99)
42	Default setting of CXA2018 (Only available in Prog 99)
43	Default setting of CXA1526 (Only available in Prog 99)
44	(all Port High) Not yet
45	(all Port High) Not yet
46	IR Channel Pressetting Mode The channel pressetting can be done by a Special IR Transmitter
47-48	dummy
49	Erase the NVM Testbyte (this byte detects already stored NVM's) After selecting this function, switch TV Off and On -> the NVM will be preset by µ-Controller. (Not the channel data)

Note: For No 35, 36, 37 and 38 special pressing (AKB, forced Color Mode, Trap) is selected. After selecting a new Test Mode Number, the AKB is switched ON, the Trap is switched ON and TDA9145 is switched to Auto Search Mode.

In Test Mode 2 the Menu display is switchable by the Speaker-Off button.

Page 14

4-4. ERROR MESSAGE

Self diagnostic system operates as follows.

• When the microprocessor is unable to receive an acknowledgement back from the device, the LED starts flashing according to the table below.

In the case of more than one error in parallel, the blinking error shows max priority according to the error number (e.g. error 2 and error 5 appear together, then LED,s show error 2).

ERROR TABLE


ERROR COUNT	IC TYPE	FUNCTION
1	II C BUS	SDA low
2	X24C16	EPROM

4	TDA9145	Colour decoder
5	CXA1587	RGB/Jungle
6	TDA6612	Sound processor
7	CXD2018	V deflection
8	CXA1545	AV switch
11	SDA5248	Text
13		V protection
stand By LED blinking		No 1K return

4-5. ERROR I²C BUS DIAGNOSTIC SYSTEM FOR AE2-B CHASSIS.

For all IC's used in the AE 2-B chassis which are necessary to obtain picture and sound there is an inbuilt I²C Bus diagnostic system.

In the case of no acknowledge bit, LED A and LED B start blinking as shown.

Page 15

Page 16

KV-X297 KV-X297

Page 17

- 50 -

- 51 -

Page 18

Note :

Pattern from the side which enables seeing. • # Battern of the rear side

Page 19

Page 20


٠	WA	VEFORMS	A BOARD

	O SECAM	() NTCC		GUEFEAM	A BOARD 10201 TDA6622 (UK Model only)
	() SECAM		2 PAL
					I'C bus Volume tradphases Trabiu - Volume
1.1 Vp-p( H )	1.2 Vp-p(H)	1.4 Vp-p ( H )	1.9Vp-p(H)	1.3Vp-p(H)
2 NTSC	3_PAL	3 SECAM	(3) NTSC	(4) PAL
-0-1	June L	June 1	June L		Reterence Voltage
1.8 Vp-p(H)	2.3 Vp-p(H)	2.2 Vp-p(H)	2.7 Vp-p(H)	2.5Vp-p(H)
(4) SECAM	(4) NTSC	5 PAL	5 SECAM	5 NTSC
	- yesting	15-15-15-	J-J-J-J-	- Anglington	• A BOARD IC201 TDA6612
2.4 Vp-p(H)	2.8 Vp-p(H)	0.6 Vp-p(H)	1.2 Vp-p(H)	0.5Vp-p(H)
6 PAL	6 SECAM	6 NTSC	⑦ PAL, SECAM	7 NTSC
	ՊՈՆՊՈՆՊՈՆ	₽ Љ-₽Љ-₽Љ-	م المسلم ال
0.8Vp-p(H)	1.5 Vp-p( H )	0.7 Vp-p(H)	0.5 Vp-p(H)	0. (Vp-p(H)	INTEGRATOR VOLTAGE VOLTAGE
8 PAL	(8) SECAM	(8) NTSC	9 PAL, SECAM	9 NTSC
June L	J. J	- have been		44
0.5Vp-p(+)	0.4 Vp-p(H)	0.6 Vp-p(H)	1.5 Vp-p(H)	1.5Vp-p(H)	• A BOARD IC301 TDA9145
10 PAL. SECAM	10 NTSC			13
┚╏╾┚╏╾╴				M
1.2 Vp-p(+)	1.0 Vp-p(H)	5.2 Vp-p ( H )	6.7Vp-p(H)	0.12 Vp-p(540KHZ)
	13	10	1)	(13)
				սւլիտոլիտոլ
4.7 Vp-p(+)	3.8 Vp-p ( H )	5.0 Vp-p(H)	8.9 Vp-p(H)	3.3Vp-р(Н)
19	20
	ֈ՟ՠ				└┉ᢕ┉ᢕ┉── - ─── - ────॑┉॑॑ ──── ॑── ┤ ───॑
3.6 Vp-p(H)	4.1 Vp-p(H)		• A BOARD I	C304 CXA1587S

As to the voltage volue shown by the mark % on the Schematic Diagram, see the another list.

A BOARD

	PAL	SECAM	NTSC3.58	NTSC4.43
iC301 🗊	0.0	0.0	4.8	4.9
3	0.0	5.0	5.0	0.0
0	4.7	4.2	3.6	4.1
10	4.8	4.4	4.6	4.8
Q301(B)	0.0	0.0	0.0	1.6
(C)	5.5	5.5	5.5	0.1
Q305(B)	0.0	5.5	5.5	0.0
(C)	0.0	0.0	0.0	1.6

• A BOARD IC251/261 TDA2052

60B

• A BOARD IC681 TDA8134A

A BOARD * MARK

Model	KV-X2971A	KV-X2971B	KV-X2971D	KV-X2971K	KV-X2973E	KV-X2972U
CN0101	-	-	-	-	20P	20P
IC201	TDA6612	TDA6612	TDA6612	TDA6612	TDA6612	TDA6622
IFB101	IFH-389	IFH-389F	IFH-389	IFH-389	IFH-389	IFH-395
TU101	UV916H	UV916H	UV916H	UV916H	UV916H	U944C

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B-SS4536<AEP>-VM.

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Model	KV-X2973E	KV-X2972U
BP1101	5.850MHz	6.552MHz
C1159	-	47P
CF1101	-	6.0MHz
CF1102	5.5MHz	-
JR1101	0 : CHIP	-
L1105	-	15MMh
X1102	11.700MHz	13.104MHz

• A1 BOARD IC:101 TDA8732

• WAVEFORMS D5 BOARD

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- 82 --

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Oxon OX9 4QY Tel: 01844-351694 Fax:- 01844-352554 Email: enquiries@mauritron.co.uk

Page 30

, Spanish Model)

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For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd, Chinnor Oxon OX9 4QY Tel: 01844-351694 Fax:- 01844-352554 Email:- enquiries@mauritron.co.uk

TO A BOARD IFBIDI

IF IN IF IN GND CL NC DA NC U AGC PULSE GND GND

CN1 I OP

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IF BOARD IC2 TDAS

SONI

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8-554254<UK. >-IF.

• IF BOARD IC2 TDA9820 (AEP, Italian, Spanish Model)

KV-X207

KV-X297

For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd, Chinnor Oxon OX9 4QY Tel:- 01844-351694 Fax:- 01844-352554 Emeil:- enoutities@mauritron.co.uk

Page 34

For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd, Chinnor Oxon OX9 4QY Tel:- 01844-351694 Fax:- 01844-352554 Email:- enquiries@mauritron.co.uk

5-4. SCHEMATIC DIAGRAM OF TUNER H816VU 101UT DRAGA

- 06 -

KV-X297 KV-X297

- 68 -

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SONY KV2972U, KVA254, KVA2541K, KVA2542, KVA2542U Service manual & schematics

SERVICE MANUAL

SPECIFICATIONS

Input/Output Terminals

[REAR]

[FRONT]

[RM-831]

WARNING (KV-X2972U only)

SECTION 3

SET-UP ADJUSTMENTS

& Brightness ...................................

Preparations :

3-1. BEAM LANDING

3-2. CONVERGENCE

Preparations :

(1) Horizontal and vertical static convergence

(2)Dynamic convergence adjustment Preparations :

(3) Screen corner convergence

a b a-d : screen-corner convergence defect c d

3-3. FOCUS

3-4. WHITE BALANCE

Screen G2 Setting

White balance adjustment

4. Set picture to MAX.

SECTION 4 CIRCUIT ADJUSTMENTS

4-1. ELECTRICAL ADJUSTMENTS

HOW TO ENTER INTO SERVICE MODE

CXA1587

Y FILTER ADJUSTMENT

SUB BRIGHTNESS ADJUSTMENT

SUB CONTRAST ADJUSTMENT

SUB COLOR ADJUSTMENT

STEREO-SEPARATION ADJUSTMENT

DRIVE AND CUT-OFF

DEFLECTION SYSTEM ADJUSTMENT

UPPER CORNER PIN

ANGLE

4-2. VOLUME ELECTRICAL ADJUSTMENTS

+B (+135V) ADJUSTMENT (RV601)

PULSE WIDTH & V-PIN ADJUSTMENTS (RV 1851/1853)

AGC ADJUSTMENT (IF BLOCK)

4-3. TEST MODE 2:

4-4. ERROR MESSAGE

ERROR TABLE

4-5. ERROR I2C BUS DIAGNOSTIC SYSTEM FOR AE2-B CHASSIS.

A BOARD * MARK

• A1 BOARD IC:101 TDA8732

4-5. ERROR I²C BUS DIAGNOSTIC SYSTEM FOR AE2-B CHASSIS.