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Pin
ID
33
AVDD
Stby +3.3V generated by 0029.
34
COMP
Internal function of the Microprocessor.
35
IREF
Internal function of the Microprocessor.
36
VREF
Internal function of the Microprocessor.
37
OSD R
Outputs Red characters for the Service Menu.
38
OSD G
Outputs Green characters for the Service Menu.
39
OSD B
Outputs Blue characters for the Service Menu.
40
HALF
Controls the Translucency of the Main Menu Background. Low = Clear, Mid =
TONE
Transparent, Hi = Gray.
41
PDO
Internal function of the Microprocessor.
42
BVC0I
Internal function of the Microprocessor.
43
FE
Front End Enable. Enables the reception of data from the Microprocessor by the
ENABLE 2
PinP Tuner.
44
FE
Front End Enable. Enables the reception of data from the Microprocessor by the
ENABLE 1
Main Tuner.
45
V.MUTE
Mutes Audio and Video through Q008 and Q010 to Sub Video and Surround
PWB during channel change. High = Mute
46
FC
Flex Converter Enable Line. Allows the Flex Converter to receive commands
ENABLE
from the Microprocessor.
47
OSD X0
Reference Frequency for OSD. Determines the OSD Size.
48
OSD X1
Reference Frequency for OSD. Determines the OSD Size.
49
H SYNC
Receives Horizontal Blanking pulses 3.3Vp/p for OSD positioning. Generated
from H Blk through Q006
50
SD
Sent through Q030 to I015 for setting the internal selection switches. Hi = Main,
SELECT
Lo = Sub
51
OSD BLK Outputs a pulse slight wider and in time with the OSD characters to clean up
video where character will be displayed.
52
TEST
Use by the factory for internal test of the Microprocessor and to place in a
specific set of criteria.
53
Power
This output goes high when the Power Button is pressed for ON and Low for Off.
ON/OFF
54
RESET
Low when Power first applied then rises to a high of 3.3V. Received from I006.
Resets the Microprocessor.
55
VSYNC
Receives Vertical Blanking pulses 3.3Vp/p for OSD positioning. Generated from
V Blk through Q005
56
P BLK
Sent to the Rainforest IC IX01. Used to Mute the Video during Channel change,
Child Lock, AVX selected with no input. Hi = Mute
57
SDA3
Serial Data Sent to the Rear Audio Output IC IS11 on Surround PWB. Controls
Volume, Bass, Treble, and Bal. Function of I2C.
58
SCL3
Serial Clock Sent to the Rear Audio Output IC IS11 on Surround PWB. Used for
Timing of Data. Function of I2C.
59
SDA2
Serial Data Sent to U204, I701, IX01, IS03, IS05, IS10, IS08, IS01, I201 and
I403. Function of I2C.
60
SCL2
Serial Clock Sent to U204, I701, IX01, IS03, IS05, IS10, IS08, IS01, I201 and
I403. Function of I2C.
61
VDD
Stby +3.3V generated by 0029. Main Microprocessor B+.
62
OSC In
OSC In (4MHz)
CIRCUIT DESCRIPTION
Function
Active
DC
DC
DC
DC
Data
Data
Data
Data
DC
DC
Data
Data
DC
Data
Data
Data
H Blk
DC
Data
DC
DC
DC
Data
DC
Data
Data
Data
Data
DC
Data
49
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