Read Sharp 66ES-D7H (serv.man34) Technical Bulletin online
CTV2001 03 02
Month of Issue:
July 2001
Classification:
Yellow
TELEVISION TECHNICAL BULLETIN
Page 3 of 10
Sharp Electronics (UK) Limited
Revision 4
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
NVM Adjustment Procedure
REASON When changing the NVM (IC1003) in any of the above models, please note the
following:
What happens after the NVM has been replaced
When the power is first applied, the processor detects that the NVM is blank and programs it
using data from the OTP (IC1002). This process takes about 40 to 60 seconds to complete.
During this time the set will not appear to start up (power supply running, but no line drive). If
for any reason the set is turned off during programming process, the data will be corrupted.
using data from the OTP (IC1002). This process takes about 40 to 60 seconds to complete.
During this time the set will not appear to start up (power supply running, but no line drive). If
for any reason the set is turned off during programming process, the data will be corrupted.
DO NOT interrupt this programming process.
Service Mode
When entering the service mode for the first time after replacing the NVM, the menu may not be
visible due to incorrect setting of the vertical shift adjustment. After entering the test mode,
carry out the following procedure to adjust the vertical shift position.
visible due to incorrect setting of the vertical shift adjustment. After entering the test mode,
carry out the following procedure to adjust the vertical shift position.
1 Press the channel up button once and a test pattern will appear.
2 Keep pressing the channel up button until the test pattern disappears.
3 Press the channel down button once.
4 You are now at the vertical shift adjustment, using the volume buttons shift the vertical scan
2 Keep pressing the channel up button until the test pattern disappears.
3 Press the channel down button once.
4 You are now at the vertical shift adjustment, using the volume buttons shift the vertical scan
up.
5 When you can see the menu, press the standby button (on the remote control) to store the
data.
Setting the NVM
The table below details what data should be entered into the NVM to reset the usage counters
and to ensure that the position of the half screen teletext picture is correct. Note that the usage
counters appear whenever the test mode is first entered.
and to ensure that the position of the half screen teletext picture is correct. Note that the usage
counters appear whenever the test mode is first entered.
Page
Position
Data
Function
00
68
36
Teletext, half screen mode position
02
FA
00
02
FB
00
Number of times that the television
has been switched on
has been switched on
02
FC
00
02
FD
00
Number of times that standby has
been selected
been selected
02
FE
00
02
FF
00
Total number of hours used (on time)
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