Read Sharp 76FW-54H Service Manual online
DA100 (50Hz) and DA50W Chassis – Repair Notes
Page 8 of 80
Sharp Electronics (UK) Limited - May 2003
Revision 3
Product Specifications
The basic chassis comes with NICAM and fast text as standard and can drive CRT’s from 56 to 76cm in both 4:3
and 16:9 formats. The only 4:3 sets that use this chassis are the 59ESD7H and 66ESD7H, both of which are
Dolby Pro-Logic models.
All variants of this chassis are fitted with three SCART sockets on the rear of the board – composite video, S-
Video and RGB can be fed into these sockets. In addition to this, some models have front AV sockets (phono and
S-Video).
All Dolby Pro-Logic models have full functionality, allowing connection of separate speakers for front left, front
right, rear left, rear right and sub-woofer. In the Pro-logic mode (once correctly set up in the user menu) the
internal speakers – left, right and centre - become the centre channel.
and 16:9 formats. The only 4:3 sets that use this chassis are the 59ESD7H and 66ESD7H, both of which are
Dolby Pro-Logic models.
All variants of this chassis are fitted with three SCART sockets on the rear of the board – composite video, S-
Video and RGB can be fed into these sockets. In addition to this, some models have front AV sockets (phono and
S-Video).
All Dolby Pro-Logic models have full functionality, allowing connection of separate speakers for front left, front
right, rear left, rear right and sub-woofer. In the Pro-logic mode (once correctly set up in the user menu) the
internal speakers – left, right and centre - become the centre channel.
Model
Screen
Size
Fast Text
NICAM
Pro-Logic
Double
Copper
Copper
CRT Types
Production
28HW53H 66cm
3
3
3
Thomson
2001 to 2002
32HW53H 76cm
3
3
3
Thomson
2001 to 2002
56FW53H 56cm
3
3
3
Philips/Thomson
1999 to 2002
66FW53H 66cm
3
3
Thomson/LG
1999 to 2001
66FW54H 66cm
3
3
3
Thomson/LG
1999 t0 2001
66FW54H 66cm
3
3
3
Thomson/LG
2000 to 2002
66GF63H 66cm
3
3
3
Philips/Thomson
2000 to 2002
66GF64H 66cm
3
3
3
3
Philips
2000 to 2002
76FW53H 76cm
3
3
Thomson/LG
1999 to 2001
76FW54H 76cm
3
3
3
Thomson/LG
1999 to 2001
76FW54H 76cm
3
3
3
Thomson/LG
2000 to 2002
76GF63H 76cm
3
3
3
Philips
2000 to 2002
76GF64H 76cm
3
3
3
3
Philips
2000 to 2002
In some FW and GF models, and in all HW models, an earth plane was added to the top surface of the PWB
(double copper), this is green in colour. This reduces interference and the possible corruption of the NVM
caused by power supply variations and CRT discharges. It is possible to identify these chassis as the fourth digit
of the serial number starts with the number 5.
In later FW sets, a power factor module was fitted as a separate PWB. This was connected between the output
of the mains bridge rectifier and the main smoothing block. Its function is to ensure that the current/voltage
draw from the mains is kept in sync. This eliminates ‘spikes’ or ‘troughs’ in the mains voltage waveform which
keeps the electricity suppliers happy.
Note that the first three digits before the serial number are in fact the month and year of manufacture, i.e.
201
512112 is January 2002.
Click on the first or last page to see other 76FW-54H service manuals if exist.