Grundig Toronto 26-7831 T Service Manual page 39

Scaler (PCB Index R-4)
Vorabversion
Preliminary Version
L408
R496
0R
S401
8
AMBILIGHT
7
6
L409
5
4 L410
L411
3
L412
2
1
C467 C468 C469 C470
Keyboard
100pF 100pF 100pF 100pF
To Keypad Board
R485
( 100R)
Optomosfet
Optomosfet
R478 NC I 2C- SCL
R479 NC I 2C- SDA
R470
NC
60R/ 100MHz
R460 R461
R462
10K 4.7 K 1K
IRIN
#LED0
60R/ 100MHz
#LED1
60R/ 100MHz
SAR0
60R/ 100MHz
60R/ 100MHz SAR1
C409
C410
C407
100pF
100pF
100pF
"TB" option. NC when TB
VCC3.3V-ST
R484
( 1k)
System-RST
SAR1
SAR_1
Power-ON/OFF
SAR_0
Hi: Off
SAR0
Lo: On
5
IRIN
T405A
IROUT
BC847BDW1T1_A LED_R
IRIN R139
SAR0 R140
SAR1
R141
(0,1W not used)
(TB+0,1W option)
R468 NC/ 0R
+5V_ST
0R
R469
R477
R467 R481
R482
0R
( 0R) ( 0R blue) 4.7 K
(0,1W option)
R466
470R
R142
1
R486
T404
R480 2N7002
1K
2nd LED option
System -RST
SAR1
#LED0
SAR_1
R488
SAR_0
R498
( 1K)
NC
SAR0
IRIN
IROUT
LED_R
0R IROUT
0R SAR_0
SAR_1
0R
Ambient light sensor option.
Cannot be used with
Vbat bicolor LED option.
R491 NC/ 0R
AMBILIGHT
VCC3.3V-ST
One color LED
LED_R-GPIO1 - for Led Blink
Two color LED ( CA )
( 0R) LED_R-GPIO1 - for LED 1
LED_R
AMBILIGHT/2ND LED for 2nd LED
or
0R
LED_R-GPIO1
Two color LED ( 2 pin Reverse conn. )
LED_R-GPIO1 - for LED 1
AMBILIGHT/2ND LED for 2nd LED
Prevent both active from SW
VCC3.3V-ST
R489
( 47K)
2 R490
AMBI LI GHT/ 2ND LED
( 0R)
T405B
BC847BDW1T1_A
AMBI LI GHT/ 2ND LED
C472
10uF