Text preview for : Circuit Description_AK37.pdf part of Funai AK37 Schema Elettrico ( Manual Service )
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END SHOW
FEATURES
·It is a remote controlled colour television ·100 programmes from VHF, UHF bands or cable channels can be preset ·It can tune cable channels ·Controlling the TV is very easy by its menu driven system ·It has Euroconnector* socket for external devices (such as computer, video, video games, audio set, etc.) ·A second Euroconnector* socket is available ·Stereo sound systems* (German, Nicam or German+Nicam) are available ·Virtual Dolby/3D Panorama* ·Full function Teletext* (Fastext, Toptext) ·It is possible to connect headphone* ·Direct channel access* ·A.P.S.* (Automatic Programming System) ·All programmes can be named. ·Programme swapping between last watched two programmes. ·Forward or backward automatic tuning. ·Sleep timer. ·Automatic sound mute when no transmission. ·When no valid signal is detected, after 5 minutes the TV switches itself automaticall to stand-by mode. ·WSS* (Wide Screen Signalling) ·NTSC Playback* ·Front or Back SVHS* is available ·Back AV in and Back AV out or Front AV in or Front AV in and Back AV our is available* ·It is possible to connect external speaker*
* optional
SUB AMP TDA7261
STEREO SOUND-MSP 34X0D/G VIRTUAL DOLBY-MSP 3411G
SUBW L AUDIO AMP TDA7269A
L R
PLL/VST TUNER UV1315/16
R
I2 C QSS SERVICE CONNECTOR EEPROM IF MONO
HP AMP TDA1308
CRT
µ CONTROLLER
ST92195
VIDEO PROCESSOR STV2248C
RGB AMP TDA6108
KEYPAD IR SENSOR +150 B+ +14V - 14V +8V +5V +5V STBY VIDEO SWITCHING CIRCUITS VER AMP STV9306 HOR DRIVE BU2508 SCART1 SCART2 SVHS FAV/BAV VER. DEFL.
SMPS MC44608
HOR. DEFL. FBT
TR 802
D 803
IC 802
+5V_S
PTC
DEGAUSS COIL
12 11
D 806
IC 804
+5V
D891
PFC COIL
4 VCC 3 6 VIN
13 15 16
D 805
IC 803
+8V +12V +14V_A
D 810
R 831 R809
14 18 17
D 811
-14V_A +33V
D800 8 DRAIN
D 808
B+ B+_P
D 809
R 801 START UP
D889 MCR22_6
MC44608 1 DMAG 2 I_SENSE 3 CONT_IN 4 GND VI 8 7 VCC 6 D804
Q801 STANDBY
Q802
DRIVER 5 IC 800 IC 801 4 SFH617A 3 2 Q804 1 R848 IC118 TL431
STANDBY-INV
1 MP
2 A1
3 A2
4 VSS
IC 500
VDD 8
ST24C08
PTC
SCL
IC 501 ST92195
SVBS2 33
CVBS_TXT CVBS1
SDA
+5V_S
21 VDD 20 P0.5_SCK 19 P5.1_5DI_500
CVBS1 34
7
6
5
TU 201 38.9MHZ_TVTUN
AGC SCL SDA VST
IF 2 10
+5V_UPD
18 FB FB_OSD HCTR 17 R AGC_OUT H_SYNC
1
2
3
4
5
6
7
8
9
(R-G-B)_OSD
BAND2
SCL BAND1 SDA
BAND0
16 G 15 B SERVICE CONNECTOR 5 4 3 2 1 PL502 PL509 1 2 3 4 5 6 KEYPAD Conn. 1 2 3 PL511 IR CONNECTOR (optional) IR_IN 1 P0.2_INP 2 RESET +8V IR_IN SCL SDA SERVICE PIN 1 2 PL510 LED Conn. (optional) A3/DSCRT A2/DSCRT A1/DSCRT BAND2 BAND1 BAND0 14 P3.4 13 P3.5 12 P3.6 4 P0.6 8 P0.2 14 P0.3 13 P0.4 12 P0.5
HSYNC 40 VSYNC 41 P4.4_PWM4 46
V_SYNC MUTE
+5V
IF_2 IF_1
+5V
STANDBY
P4.5_PWM5 47
Q 503
STANDBY-INV OSCOUT 50 OSCIN 51
X 501
P2.3_INT6_VS01 54
P2.2_INTO_AIN2 55 P2.1_INT5_AIN1 56
+33V
AV1_S
AV2_S
IF 1
11
VT
AS
VS
IC 403 Z401 IC301 TDA7269A
VCC1N MUTE VCCP OUT1 OUT2 VCC2N IN2N IN1N GND IN2P IN1P IF_1 SAW 1 SIFIN1 2 SIFIN2 3 4
TV PROCESSOR - STV 223x
56 AUDIOOUT 55 GNDD VCCD 54 53 52 51 50 49 HOUT VOUT BCL_SAF VCC1 48 47 46 45 HOUT VOUT BCL +8 V CVBS OUT +5 V SDA SCL A_OUT
1
2
3
4
5
6
7
8
9
10
11 IF_1
Z402
IF_2
SAW
5 6 PIFIN1 7 PIFIN2
PL406
4 3 2 1
AGC_OUT -14V_A +14V_A MOUT_L MOUT_R
8 TUNER AGC_OUT 9
QSS EXT_AO
10 11 AM_FMOUT _SC 12 13 INT CVBSOUT EXT_AIN
MUTE
PL301(R) PL302(L) 2 1 2 1
A_OUT
CVBSOUT 44 43 VAMP 42 41 XTAL1 40 XTAL2 39
Z404 1 2 3 4 5 6 PL303
Z403
14 EXT AUDIO IN 15 16
TRAP
VAMP X401 X402
1 2 3 4
5
6 PL304
+8 V
17 VCC2 18 CVBS IN1
JK303
19 SC1_CVBSIN 20 CVBS IN2 21 CVBS3 22 23 CHR 24
XTAL3-BTUN 38 37 ROSD GOSD BOSD 36 35 34
X403
(R-G-B)_ OSD
+8 V
5 4 3 2
1 PL407
CHRM
6 5 4 3 2 1 PL405
ICATCH 33 ROUT GOUT BOUT 32 31 30 29 CVBS-TXT
+8V LFB FB-OSD 16/9-P0.0
(R-G-B)_ VEST
25 BEXT_UEXT 26 GEXT_YEXT 27 REXT_VEXT
FB_VEST
28 FBEXT
FR/BK_A_I_R
FR/BK_A_I_R
SC1_AOR
SC2_AOR
35 34 30 31
SC1_AIR
QSS X 700 +5 V
A_OUT
SC2_AIR
SC1_AIL
+8 V
64
STBYQ ANA_IN1+
AVSUP
IC 700
XTAL
DVSUP
AHVSUP
63 62 OUT IN
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
SC1_AOL
37
36
R L SC1_IN
R L SC2_IN
R L SC3_IN
L R SC1_OUT DACM R L
27 28 29
L R SC2_OUT
DACA R L
19 20 21 22 23 24 25 26
MSP 3410D_DIP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
SC2_AOR
33 32 1 2
SC2_AIL
PL701
+5 V SCL SDA +5 V R L MOUT MUTE
IC 701
4 VSS INB+ 5 INB- 6
PL 700
1
3 INA+
HP
2 3
2 INA- OUTB 7 1 OUTA VDD 8 TDA1308
+5V
JK102
PL104 SVHS_V/FRONT SC2_AOR SC2_AIL SC2_AIR SC2_AOL CHRM AV2_S SC2_CVBSIN FR/BK_VIN 1 2 3
SC1_AI A1/DSCRT
+8V
SC2_AI
+8V
FR/BK-A-I-R A3/DSCRT
A2/DSCRT
EXT-AIN
SC2_CVBSIN
+8V
FR/BK-V-IN A3/DSCRT
2 1 3
6
8 15 19
20
A2/DSCRT
PL 101
CHRM 23 22 24 27 29 28 37 32 36 SC1_CVBSIN
CVBS3
SC1_AIR
41 40
SC1_AIL
E_CVB-0
SC1_AOL EXT_AO SC1_AOR
AV1_S
R_EXT FR/BK_VIN
B_EXT
G_EXT
FB_EXT FR/BK VIDEO OUT FR/BK VIDEO IN SC1_AOR JK101
E_CVBS-0
2 1
PL 102
3 2 SC1_AOL 1
FR/BK_A_I_R
FR/BK_A_I_L
STV9306
FLYBACK
CRAMP
SENS2
SYNC
GVD
SDA
SCL
1
2
3
4
5
6
7
8
OUT
VS
9
VOPS
10
11
12
13
SENS1
14
EWFB
IC 601
CHOLD
EWOUT
BREATHING 15
+14V
SCL
SDA
PL602 V_PROT
VOUT
2
1
+26V
VDEFL YOKE EW_OUT
+12V
EW_FEEDBACK
TR 601
5 6 7
+26V
+12 V
EHT BCL FOCUS G2
2 10 13 8 HEATER
+14V
H_OUT H_SYNC EW_FEEDBACK EW_OUT
EW
VIDEO_B+ B+
9 4 3 1 12
NC
EHT INFO
COLLECTOR HOR DEFL CIRCUIT
VIDEO_B+
1
2
PL601
11
PL600
HDEFL YOKE
1
2
3
4
5
6
IC 900
TDA6108 - RGB VIDEO AMPLIFIER
VOC3
VOC2
8
1
2
3
4
5
6
7
B
G
R
1
PL 901 PL 902
1 2 3 4 5
B G R I_BL PL 900 CRT
PL 903
6 5 4 3 2 1
200 V HEATER AQUA H_GND
PL 907
1
1
PL 906
VOC1
9
GND
VI2
VI3
IOM
VI1
VDD
1
1
PL 905 - SCREEN
PL 904 - AQUA
END SHOW