Sony KZ-32TS1U Training Manual page 59

S
DATA
IC9004 IC9502
MAIN FAN/
MICRO LAMP
S
CONTROL
CLK
LAMP
LED
M BD.
HALL DEVICES
*
DETECT FAN
ROTATION
Fan Rotation Detection
When drive voltage to the fan is present, the fan rotation detector output will ground out the 5Vdc input at
CN1908/pins 8 & 10. This ground (0Vdc) keeps the Main Micro from turning OFF the TV.
If either fan stops rotating, CN1908/pins 8 or 10 will rise to 5Vdc. This 5Vdc is detected by Min Micro IC9004
(CN9020/pin 45 *) and IC9004 shuts off the TV in five seconds.
* CN9020 can be accessed from under the A board. Tilt the TV board assembly up and locate the marked pin.
7V
5 4
CN1605/ CN1914
5
CN9001/
CN1921
IC1905
21
16
26
0V
H
20
21
L
0V
CONTROL
0V
H
18
19
L
5V
22
5V=ON
0V=OFF
23
5V=SHUTDOWN
0V
0V=NORMAL
45
CN9501/
0V
CN1920
7
7
H3 BD.
Q4508
FIGURE 26-2 - FAN CONTROL - KF-60DX100
POWER
RY
5V
SUPPLY
1601
CN1604/
CN1926
1 2 1 2
4
1 2 1 2
7V
11V
A BD.
STBY
5V
FAN 1
5V
PWR 5V
IC1908
FAN 1
REG
1.2V
FAN 2 IC1909
REG
FAN 2 PWR 9V
Q1905
D1901
D1902
STBY
5V
3
CN1901
3
CN5402
STANDBY LED
57
26. Fan Control - KF-60DX100
11V
7V
PWR SUPPLY BD.
3
4
CN1613/
CN1914
3 4
*
DEVICES
FAN 1
RED
6
5V
5
BLK
BLU
7
9V
9
RED
FAN 2
8
0V YEL
WHITE
0V
10
CN1908
5V
BI-METAL
FAN 2
FAN 1
CN1908
TV REAR
FAN/BOARD LOCATION
7TVP13 1442
CN1614
1
3
HALL
BI-METAL
FUSE
UNDER
FAN 2
0V
M BD.
PS
BD.
A BD.
4/16/02