56FW-53H (serv.man2). IC voltage tables for the DA100 (50Hz) and DA50W chassis - Sharp TV Service Manual (repair manual). Page 7

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DA100 (50Hz) and DA50W Chassis – Voltage Tables
Page 7 of 9
Sharp Electronics (UK) Limited - March 2003
Revision 1
IC501 - Vertical Output
Type:
Thomson TDA7480
Sharp Part Number: VHITDA7480/-1
Package:
DIL
Price Code:
AK
This IC is the same type for all FW models.  To date, it has no alternative.
Pin
Name
I/O
Comment
DC Voltage
1
-Ve
I
Negative supply
-13.1V
2
-Ve
I
Negative supply
-13.1V
3
-Ve
I
Negative supply
-13.1V
4
Output
O
PWM output
0V
5
Boot Diode
I
Boost diode
-2.1V
6
Boot
I
Boost
9.9V
7
NC
X
Not  connected
0V
8
Feedback C
I
Feedback
0V
9
Frequency C
I
Freq control
-11.8V
10
Ground
X
Signal ground
0V
11
Input
I
Signal input
0V
12
Mute
I
<2.7V mute
5.0V
13
NC
X
Not connected
0V
14
+Ve
I
Positive supply
14.1V
15
V reg
I
Reference
0V
16
+Ve
I
Positive supply
14.1V
17
-Ve
I
Negative supply
-13.1V
18
-Ve
I
Negative supply
-13.1V
19
-Ve
I
Negative supply
-13.1V
20
-Ve
I
Negative supply
-13.1V
IC1003 - NVM
Type:
Xicor X25645S8
Sharp Part Number: RH-IX1603BMZZ
Package:
SMD
Price Code:
AV
In the Dolby Pro Logic version of this chassis (models ending in 4) and the76GF63H, there is another NVM
fitted.  This is IC1004 and it is used as a teletext page store.  It is not necessary to change this IC if you
suspect a data corruption causing an operational problem on the set.
Pin
Name
I/O
Comment
DC Voltage
1
NC
X
Earth
0V
2
S1
X
Earth
0V
3
S2
X
Earth
0V
4
VSS
X
Earth
0V
5
SDA
I/O
Date
4.2V
6
SCL
I
Clock
4.2V
7
WP
I
Write protect
5.0V
8
VCC
I
Supply
5.0V
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