ViewSonic PJ870 Service Manual - Page 49
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5-5 DC-DC Converter 5-5.1 The Location of Connector DC-DC to DMD Formatter r, Board Connector P.1870 CN9 ri CN4 CN3 CN2 CN5 CN6, CN I AC-DC output to DC-DC input Connector 5-5.2 DC-DC to DMD Formatter Board Connector Pin# Signal Name 1 +5V, Analog 2 GND2 (5V analog) 3 +12V 4 GND 5 +5V, Digital 6 GND 7 +3.3V 8 GND 9 +3.3V 10 GND 11 +3.3V 12 GND 13 Power Good 14 Spare 15 CWINDEX 16 Lamp Enable/Sync 17 Fan Enable 18 Lamp Lit 19 PWRIO Spare 20 THERMOSTAT Function +5V Ground +12V Ground +5V Ground +3.3V Ground +3.3V Ground +3.3V Ground Power Good No Connection Color Wheel Index Lamp Enable Fan Enable Lamp Lit No Connection Thermal Status ViewSonic Corporation [5-14] CO:Montle, - Do Not Copy
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P.1870
5-5
DC
-DC
Converter
5-5.1
The
Location
of
Connector
DC
-DC
to
DMD
Formatter
Board
Connector
r,
CN6,
CN
I
CN9
ri
5-5.2
DC
-DC
to
DMD
Formatter
Board
Connector
CN4
CN3
CN2
CN5
AC
-DC
output
to
DC
-DC
input
Connector
Pin#
Signal
Name
Function
1
+5V,
Analog
+5V
2
GND2
(5V
analog)
Ground
3
+12V
+12V
4
GND
Ground
5
+5V,
Digital
+5V
6
GND
Ground
7
+3.3V
+3.3V
8
GND
Ground
9
+3.3V
+3.3V
10
GND
Ground
11
+3.3V
+3.3V
12
GND
Ground
13
Power
Good
Power
Good
14
Spare
No
Connection
15
CWINDEX
Color
Wheel
Index
16
Lamp
Enable/Sync
Lamp
Enable
17
Fan
Enable
Fan
Enable
18
Lamp
Lit
Lamp
Lit
19
PWRIO
Spare
No
Connection
20
THERMOSTAT
Thermal
Status
[5-14]
ViewSonic
Corporation
CO:Montle,
-
Do
Not
Copy