Entrenamiento sobre el TV Philips Chasis L01.

1. CTV 2001 L01
PAGE 1

2. CTV 2001 L01
PAGE 2

3. CTV 2001 L01
PAGE 3
LOT
RELAY TEA1507 SWITCH MODE TDA8359
POWER IC TRANSFORMER FRAME IC
UOC
TDA6107 M24C08
MSP 34X5 AN7522 UOC TUNER
RGB Amplifier MICROPROCESS EEPROM
SOUND IC AUDIO AMP

4. CTV 2001 L01
PAGE 4
TDA 95XX
HEF4053
UOC
Switching IC
HEF4052
TDA 9853 Switching IC
Non DBX
Sound IC

5. CTV 2001 L01
PAGE 5
POWER SUPPLY

6. CTV 2001 L01
TEA1507 PAGE 6

7. CTV 2001 L01
TEA1507 PAGE 7
FEATURES
Distinctive Features
• Universal mains supply operation( 70 to 276V AC).
• High level of integration, giving a very low external
component count.

8. CTV 2001 L01
TEA1507 PAGE 8
Green features
• Valley/zero voltage switching for minimum losses
• Efficient quasi-resonant operation at high power levels
• Frequency reduction at low power standby for improved
system efficiency(<3W)
• Burst mode operation for very low standby levels(<1W)
• On-chip start-up current source

9. CTV 2001 L01
TEA1507 PAGE 9
Protection features
• Safe restart mode for system fault conditions
• Continuous mode prot. by demagnetization detection
• Accurate and adjustable overvoltage protection
• Short winding protection
• Undervoltage protection
• Overtemperature protection
• Low and adjustable overcurrent protection trip level
• Mains voltage-dependent operating-enabling level

10. CTV 2001 L01
TEA1507 PAGE 10

11. CTV 2001 L01
Functional description TEA1507 PAGE 11
Istart=1,2mA, Vdrain>100V
Vstart-up=11V, Icc=1,3mA
Vcc Low=8,7V

12. CTV 2001 L01
TEA1507 operating modes PAGE 12

13. CTV 2001 L01
Start-up sequence PAGE 13
11V
M-level
Burst mode
stby

14. CTV 2001 L01
Control pin CTRL PAGE 14
Vsense(max)voltage as function of VCO frequency as function of Vsense
VCTRL
Vctrl<1V
Vctrl>1.5V
Frequency variation
If Vctrl increases Vsense decreases-> frequency decreases
If Vctrl decreases Vsense increases-> frequency increases
If Vctrl <1V and >1.5V-> PWM regulation and fixed frequency

15. CTV 2001 L01
Valley switching PAGE 15
Start of a new cycle at
lowest drain voltage
Start of a new cycle in a classical PWM
system at high drain voltage

16. CTV 2001 L01
Demagnetization PAGE 16

17. CTV 2001 L01
Overvoltage protection(OVP) PAGE 17

18. CTV 2001 L01
Overcurrent protection(OCP) PAGE 18
Current measuring
Level internal limited at
0.5V

19. CTV 2001 L01
OverPower protection(OPP) PAGE 19
Short winding protection
Overpower protection

20. CTV 2001 L01
Burst mode standby PAGE 20
Burst mode standby
Iburst on = 16mA Vburst Standby position
on = 3.8V

21. CTV 2001 L01
Soft start-up PAGE 21
Soft start-up

22. CTV 2001 L01
A1 Standby mode PAGE 22

23. CTV 2001 L01
Power down and protection PAGE 23

24. CTV 2001 L01
PAGE 24
Schema service manual
A1 page 22

25. CTV 2001 L01
Tips for debugging power supply PAGE 25
No. Problem symptom Check
1) No Vbatt volt, Vaux volt Voltage on Pin 1 of 7520,
3532, 3523,7521
2) Low voltage on Stdby_con signal ( normal- Low, Stdby-
Vbatt,Vaux High),
But 3.3v is OK 7541, 7542
collector of 7561 ( normal - High, Stdby -
pulses)
3) Set automatically collector voltage of 7561, 3.3V supply,
switchoff after switch on shorting on Vaux supply.
4) No 3.3V supply Short on 3.3V
7560
6561/6562
3564

26. CTV 2001 L01
PAGE 26
END
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MAIN MENU

27. CTV 2001 L01
PAGE 27
DEFLECTION

28. CTV 2001 L01
Defelection PAGE 28
• Synchronisation
• Horizontal deflection
• Vertical deflection
• Protections

29. CTV 2001 L01
Synchronisation PAGE 29
UOC - Synchronisation
TILT
Tilt
µP
Teletext Teletext
VIDEO Acquisition /OSD
SWITCH PANORAMA
Internal CVBS SYNC H V
1 H H-DRIVE
External H/V Sync H-Drive
Separat. H FLYBACK Horizontal
CVBS, SVHS or
Y/C
EHTInfo Deflection
V
EHTo
EW
EWdrive
VDRA
V-Drive Vertical
VDRB
Deflection
Vguard

30. CTV 2001 L01
PAGE 30

31. CTV 2001 L01
A2 Horizontal deflection PAGE 31

32. CTV 2001 L01
PAGE 32
EHTinfo
EWdrive
Mains Supply Horizontal
Deflection
Panorama Coil
Hflybk
Secondary
output
voltage
L
H
Vguard
BLK-IN
POWER
DOWN
EW EHTo
Correction
EW
Protection

33. CTV 2001 L01
EW correction PAGE 33

34. CTV 2001 L01
Auxiliary voltages LOT PAGE 34

35. CTV 2001 L01
A2 Auxiliary voltages PAGE 35

36. CTV 2001 L01
Panorama PAGE 36

37. CTV 2001 L01
A3 Frame deflection PAGE 37
Protection
Vdrive +
Vdrive - Feedback

38. CTV 2001 L01
A2 Protections deflection H and V PAGE 38

39. CTV 2001 L01
BLK_IN/VGUARD Signal(UOC Pin 55) PAGE 39

40. CTV 2001 L01
PAGE 40
SERVICE MANUAL PAGE

41. CTV 2001 L01
Tips for debugging deflection PAGE 41
No. Problem symptom Check
1) Set cannot start-up & Isolate 5561 & check Vbatt is correct now (Power
Vbatt volt not correct Supply ok) – check for 7460, 6460, 6461 failure.
Check MainAux and VlotAux +13V (6467) are
correct for base drive of deflection – check for
7461, 7463 & 7460 failure.
2) Incorrect pic. width or Isolate 5400 & check EW_protection is now not
EW trigger – check for 7400, 2401, 2404 failure.
Protection trigger
3) No Check secundary voltage supply – 3494, 3488,
+200V,+50V,+13V,+8V,+5 6486, 7480, 7482.
V supply
4) Single horizontal line No vertical deflection – check 7471 Frame IC,
VlotAux+13V failure.
5) Flyback line visible on Check 7330 Video amplifier, +200V supply failure.
screen

42. CTV 2001 L01
PAGE 42
A6 Synchronisation Protection flash Alim VP2
Iref Trame
Correction géométrie image
Protection Lignes OVP
switch off BT L et T

43. CTV 2001 L01
Video Signal Processing PAGE 43
Video Signal Processing

44. CTV 2001 L01
PAGE 44
General description
Combined the function of :
video processor + Micro-controller.
Basically divided in 4 main function :
1) Microcontroller
2) Video / Audio Demodulator TDA955x/6x/7x/8x
3) I/O Switching
4) SYNC Separator

45. CTV 2001 L01
PAGE 45

46. CTV 2001 L01
Tuner and IF QSS PAGE 46
UOC Sound
Processing
FM
Sound QSS_AM_DEM_OUT
Sound IF QSS Sound IF
Tuner Saw Filter
Visiion Vision IF IF Video output
Vision IF
Saw Filter
Tuner AGC
Sound
Trap
SEL_IFPLL/Mtrap
uP
I2C
Video Int CVBS
Processing

47. CTV 2001 L01
Tuner Block Diagram PAGE 47
IIC Data
Lines
RF AGC
CIRCUIT
4/5 1 22 71/72
11 Video
SAW Filter 18/19
TUNER UOC
FM Input
2 Audio
SAW Filter 23/24
SAW Filter
Switching Circuit
SEL-IF-LL’

48. CTV 2001 L01
Video Processing PAGE 48
Radio
TV-Tuner
UOC
UOC
7200 - C
7200 - A .
Video
IF+ Ampl .Processing
UOC
I/O 7200 - D
Scart / Front Synchronisation

49. CTV 2001 L01
Tuner IF PAGE 49
Tuner 11
10
UOC Video
SAW
VIF1 = pin18
Video VIF2 = pin19
FM RADIO
A5-24
7002
UOC Sound
SAW
SIF1 = pin23
7001 SOUND SIF2 = pin24
SEL-IF-M-TRAP

50. CTV 2001 L01
PAGE 50
Schema service
manual
A4 page 26

51. CTV 2001 L01
Video processing PAGE 51
Tuner 11
AGC PIN18/19 Ampli 49 EXT 1 CVBS
Demodulation
IF VIDEO Video 38
7200- A
IF SOUND CVBS
40
7200-C

52. CTV 2001 L01
Video Processing PAGE 52
V-OUT CVBS vers Ext2
C-in R
45 47 56 V
SY-CVBS-in 57
44 B
7200-C 58
42 55 BLK-in
CVBS1-in
54
40 51 52 53 50
CVBS-terr-in
R EHT-info
V
B
EXT1 FBL

53. CTV 2001 L01
PAGE 53
Schema service manual
A5 page 27

54. CTV 2001 L01
Video source select PAGE 54
Scart 1 Video Out
Scart 2 Video Out
49 47
R In 51
G In 52 Video Processing R Out
56
B In 53 G Out
57
B Out
UOC
FBL In 50
58
HEF4053BT
Front/Side Video In Scart 1 Video In 42
5
4
Scart 2 Video In 44
3 38
1 2 54 40
9/10/11
Status 1 RF Video
Status 2
SEL-Main_Frnt_RR
EHT Info BCL Circuit Sound Trap

55. CTV 2001 L01
PAGE 55
Schema service manual
A10 page 32

56. CTV 2001 L01
B1 CRT panel PAGE 56

57. CTV 2001 L01
CRT PAGE 57
Schema service manual
B1 page 42

58. CTV 2001 L01
2 CRT Scavem PAGE 58

59. CTV 2001 L01
Scavem PAGE 59
Schema service
manual
B2 page 43

60. CTV 2001 L01
PAGE 60
END
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MAIN MENU

61. CTV 2001 L01
PAGE 61
MICROPROCESSOR

62. CTV 2001 L01
Micro Controller Diversity PAGE 62
Type Teletext ROM Software Others
Number Type Size Used
TDA9561 10 Page 128k 3EU1/3EU2 Inter-Carrier
TDA9567 10 Page 128k 3EU1 QSS
TDA9552 1 Page 64k 2EU0 QSS
TDA9551 1 Page 64k 2EU9 Inter-Carrier
TDA9550 1 Page 64k 2EU0 Inter-Carrier
TDA9572 Nil 32k 1EU0 QSS
TDA9571 Nil 32k 1EU0 Inter-Carrier
TDA9581 Nil 32k 1EU0 Inter-Carrier

63. CTV 2001 L01
Micro Controller block diagram PAGE 63
Power Supply
Stby_Con Write Protect
Power Good
Keyboard/Protection NVM
Circuit Keyboard/Protection
ST24C16W6
Status 1/Status 2
Scart
UOC IIC Data
Vol/Mute/Treble/Bass/Panorama
Micro Controller Lines
Mono Audio Proc. SEL-Main-Front-RR
Audio Amp. SEL-IF-LL’
LED
Source Select MSP IC
IR
Circuit
SAW Filter Horizontal
Switching Pulse
LED TUNER
IR DEFLECTION

64. CTV 2001 L01
Microcontroller functionality PAGE 64
I2C 71, 72 UOC 6 Stdby-con
7200B 68 Write Protect NVM
IR 67
5 LED
STATUS 2 2 70 SEL-MAIN-FRNT-RR
Output
3 SEL-IF-LL-M-TRAP
Input
STATUS 1 1
77 Treble
Keyboard-protn 80
73 Volume/Mute SDM
Power-Down 69 78 Bass-panorama

65. CTV 2001 L01
Functionality TXT/OSD PAGE 65
CVBS Internal 40
42
UOC
SCART1
SCART2 4
7200B
4
H 31 R
56
V
V
57
TXT OSD
B
58
55 BC Info/Protection

66. CTV 2001 L01
UOC interface with power supply PAGE 66
+3.3 V
POWER SUPPLY 61
BLOCK Power_down
A. C. Mains 69
UOC
WITH TEA 1507
Stdby_con
CONTROL IC 6

67. CTV 2001 L01
A7 Conrol PAGE 67
Power Dow
Service Default
Status1 Status2
E/W PROT.
Scart Scart 1 Input Scart 2 Input
Pin 8 Level
1.82V to 2.6V 4:3 Aspect Ratio 4:3 Aspect Ratio
0.845V to 1.56V 16:9 Aspect Ratio 16:9 Aspect Ratio
0V to 0.65V No Switching No Switching

68. CTV 2001 L01
Standby status UOC PAGE 68
Put Standby Con
Put STB to low PG LOW
To Low
Enable Wait for 550 ms Mute Audio
INTERRUPT
Put UOC in
Wait for 180ms Put STB to low
standby
Put UOC out of
Disable interrupt
Standby
Put Standby Con
Set STB to high
To High

69. CTV 2001 L01
Power ON-Standby-Power On-Power Off PAGE 69
Standby key press Out of Standby key press
Power ON Standby Power ON Power off
3.3V
180ms >3ms
STB bit
Mute Audio Mute Audio
Enable
Interrupt status Disable
550ms
Out of Stdby
UOC Status
Stdby
Power down
Stdby_con

70. CTV 2001 L01
Power ON-Standby-Power OFF-Power ON PAGE 70
Power ON Standby Power OFF Power ON
Standby key press
3.3V
Mute Audio
STB bit
Enable
Interrupt
status Disable
Out of stdby
UOC
status Stdby
550ms
Power down
Stdby-con

71. CTV 2001 L01
Power ON - Fault condition PAGE 71
SEQUENCE OF OPERATIONS : POWER ON - FAULT CONDITION (OVER CURRENT BY V aux.)
Burst mode with
Power ON
Fault condition LOT shut down
(Audio Over current)
3.3V
STB bit
Enable
Interrupt
status Disable
Out of stdby
UOC
status Stdby
Power down
Stdby-con

72. CTV 2001 L01
Tips for debugging µP PAGE 72
1. Check that both +3.3V DC and +3.9V DC are present.
2. Check that crystal oscillator is working.
3. Check keyboard protection pin that it is in high logic. For sets with EW control,
make sure that base of 7606 is low.
4. Check that Power Good signal is at high logic, normal operation.
5. Check that UOC is not in standby mode. Pin 6 of UOC should be 0V DC.
6. Make sure H-drive pulse is there. This can be check from resistor 3251. If H-
drive is does not exist, remove resistor 3251 to check if there is loading.

73. CTV 2001 L01
PAGE 73
Schema service
manual
A7 page 29

74. CTV 2001 L01
PAGE 74
END
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MAIN MENU

75. CTV 2001 L01
PAGE 75
AUDIO PROCESSING

76. CTV 2001 L01
Audio processing PAGE 76
STEREO
TUNER
A4
UOC MSP Ampli
A5 A9 A8
Ext
Ext
Audio
Audio
MONO
TUNER
A4
SMART
UOC Ampli
AUDIO
A5 A8
A8
Ext
Ext
Audio
Audio

77. CTV 2001 L01
A4 Sound IF PAGE 77
K3953M
K6289
K9656M
High for L’

78. CTV 2001 L01
Audio Decoder/Processor PAGE 78
VIF UOC
To Audio Amplifier
18/19
48 S.S
From Tuner Output
23/24 Mono
SIF
33 38
TV SIF Video with SIF
(QSS) (Inter-Carrier)
Note: S.S = Smart Sound
Switch Circuit MSP
Stereo
To Audio Amplifier
47 24/25
31
From Tuner Output
(FM Radio)

79. CTV 2001 L01
Mono sound processing PAGE 79
Ext IF (FMR) UOC - Audio Block
Mono Mono
Demod + Source select + AVL Power
Volume control Smart
Ext Audio 1 Amplifier
Sound
Ext Audio 2

80. CTV 2001 L01
A5 IF Sound PAGE 80
Input/Output UOC Sound
SIF-1/SIF-2
23/24 CVBS inter carrier
38
VIF-1/VIF-2
18/19
Mono/AM
L1-in
7200-C 48
28
QSS_AM_DEM
LFRONT-in 33
29

81. CTV 2001 L01
A5 Sound mono set PAGE 81
Scart1 out mono
4211 for mono
Audio out mono

82. CTV 2001 L01
Nicam + 2CS + BTSC decoder PAGE 82
UOC
Tuner SAW Sound uP
Filter IF
OSS_AM_DEM_OUT I2C
Pre-
ADC Demodulator processing
L
External Stereo SCART
Input DSP
R ADC Prescale
Input
External Mono Select
Input
Loudspeaker L Audio
Sound DAC Amplifier
Processing
R
Source
Select
SCART L
DAC Output External
Select Audio
R Output

83. CTV 2001 L01
Nicam + 2CS + BTSC Stereo Decoder PAGE 83
QSS-AM-DEM-OUT Select Radio /TV
TV/RADIO
Select
47 3
4 SC2 CTR
FMR
Main-OutL
25
Mono AM
44
MSP34X5G 24
Main-OutR
SC1-Lin SC1-Lout
41 31
SC1-Rin 42 30
SC1-Rout

84. CTV 2001 L01
A9 Nicam +2CS + BTSC PAGE 84
To Audio Ampl.
Source select
Bandpass filter
FM Radio

85. CTV 2001 L01
Audio source select PAGE 85
UOC
29 To Audio Amplifier
48
28
To Monitor Output Mono
33
To Scart Output
HEF4052
SIF To Audio Amplifier
Front/Side In 1/12 47 MSP
24/25
Scart 1 In 5/14
3/13 41/42
To Monitor Output
Scart 2 In 2/15
30/31
4/11
Stereo
To Scart 1 Output
HEF4053
2/12 To Scart 2 Output
14/15
1/13
To Monitor Output

86. CTV 2001 L01
A10 Audio/video source switching PAGE 86
SC2_CTRL
SEL-Main-FRNT-RR
To Micronas
Monitor Out/AV
to Scart 2 out
Scart1 out Mono

87. CTV 2001 L01
FM Radio PAGE 87
FM Radio Tuner
Mono Amplifier
UOC
Micronas Stereo Amplifier

88. CTV 2001 L01
A9 FM Radio circuit PAGE 88
FM Radio Mono
To Micronas
FM Radio Stereo
Amplifier
Buffer

89. CTV 2001 L01
A8 Audio amplifier PAGE 89
AN7523 Headphone
To Speaker Mono 1W - 3W
2/4
6
Left Channel 5 9
Mono 4W
Standby Mute/Vol
Headphone
AN7522 To Speaker
6
2/4
Stereo 3W - 5W
10/12
8
Right Channel 5 9
Standby Mute/Vol

90. CTV 2001 L01
Audio Output PAGE 90
Mono System
Sound Mono
Processing Audio
Amplifier
AN7523
UOC
Volume/mute
uP

91. CTV 2001 L01
Audio Output PAGE 91
Stereo System
Main_OutL
Sound Stereo L
Processing Audio
Main_OutR
Amplifier
R
AN7522N
UOC
Volume/mute
uP

92. CTV 2001 L01
A8 Audio amplifier PAGE 92
25 6 2/4
Audio Processing L
Amplifier
MSP ou
BTSC decoder Stereo
24 8 9 10/12 2 x 5W
R
UOC Volume / Mute
73
µP
77 78
Bass
Treble
9 1 x 4W
. .
Processing Amplifier
Audio 6 2/4
Mono Mono

93. CTV 2001 L01
PAGE 93
Schema service manual
A8 page 30

94. CTV 2001 L01
PAGE 94
END
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MAIN MENU

95. CTV 2001 L01
PAGE 95
Error Code 0
A “0” in a buffer means an error has not been detected.
L01US0 1.0 SDM
ERR 0 0 0 0 0
Contents of last 5 detected errors

96. CTV 2001 L01
PAGE 96
Operation hours timer L011US1version S A M indication
99999 Software 1.0 SAM
ERR Contents of last 5 detected errors
0 0 0 0 0
XXX XXX XXX XXXByte Value
OB(n) - Option XXX XXX XXX
Clear Clear Error Buffer Clear?
Options
AKB 0
Tuner
White Tone
Geometry
Audio

97. CTV 2001 L01
PAGE 97
Item
Item D es crip tio nn
D es crip tio
IF P LL L
IF P L D efau lt valu ee==24 (d oonn o talig nn )
D efau lt valu 24 (d o t alig )
A FF W
AW A FF Cw in dd ow
A C w in ow
AGC
AGC D efau lt valu ee==28 (d oonn o talig nn )
D efau lt valu 28 (d o t alig )
S LL
S O nn/ /O ff
O O ff
YD
YD D efau lt valu ee==33(d oonn o talig nn )
D efau lt valu (d o t alig )
C LL
C D efau lt valu ee==44(d oonn o talig nn )
D efau lt valu (d o t alig )
A FF A
AA N oo tselectab le
N t selectab le
A FF B
AB N oo tselectab le
N t selectab le

98. CTV 2001 L01
PAGE 98
White Tone Normal NORMAL RED
NORMAL GREEN
NORMAL BLUE
Cool DELTA COOL RED
DELTA COOL GREEN
DELTA COOL BLUE
Warm DELTA WARM RED
DELTA WARM GREEN
DELTA WARM BLUE

99. CTV 2001 L01
PAGE 99