Sanyo PDG-DXL2000 - Fan Control Circuit

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Chassis Block Diagrams
Q7891
TEMP SENSOR 2
<DMD>
TEMP SENSOR 1
<ROOM>
<LAMP>
LAMP
BALLAST
BOARD
K77B
FN902
1
2
2 1
IC7881
DAC
<M62393>
PFAIL
D7702
K77C
FN903
1
2
D7703
K77D
FN904
1
2
D7704
K77E
FN905
1
2
D7705
K77F
FN906
1
2
D7706
IC8801
TEMP.
SENSOR A
<MCP9801>
2 1
IC8821
TEMP.
SENSOR B
<MCP9801>
MAIN
FANNET
IC401
DLP DATA PROCESSOR
DDP2431
IC4721
NAND
2
1
4
135
223,304
SCL2
SDA2
SCL2_DAC
SDA2_DAC
Q7871
Q7872
Fan Error: On
Error: L
Error: H
Fan Error: H
SIGNAL/MODE
POWER-ON STAND-BY
H L
POWER-ON STAND-BY
H L
NORMAL ERROR
L H
FAN_SW_BUFF
LAMPCTRL
PFAIL
PFAIL_FAN
FAN_ERR
K47A
K07AK8B
K8E
3
LAMPCTRL
143
98
5
2,3
4
15
14
13
12
34
2 1
IC8811
TEMP.
SENSOR C
<MCP9801>
K8H
34
K8F
FN901
1
2
D7812
D7811
D7821
D7831
D7841
D7851
D7861
FAN1
16VF
FAN3
FAN4
FAN5
FAN6
FAN_LOCK
IC7811
IC7821
IC7831
IC7841
IC7851
IC7861
PFAIL LOGC ICs
IC5851, IC5852
Q7801
Q7802
Q7821
Q7811
Q7831
Q7841
Q7851
Q7861
FAN2
FAN_CONT6
FAN_CONT5
FAN_CONT4
FAN_CONT2
FAN_SW_BUFF
FAN_CONT1
FAN_CONT3
PFAIL_FAN
SW901
LAMP
COVER
SW
K47B
1
1
2
4
LAMP_SYNC
9
11
13
15
17
5
40
Fan control circuit