Sharp 76GF-63 (serv.man2) Service Manual ▷ View 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.
DA100 (50Hz) and DA50W Chassis – Repair Notes
Page 9 of 80
Sharp Electronics (UK) Limited - May 2003
Revision 3
IC Identification
Several different types of IC are used in the DA100 (50Hz) chassis. These are listed in the table below. Note
that although these IC’s may be available from other sources, it is strongly recommended to obtain these
directly from Sharp Electronics (UK) Limited, or their approved distributors, using the part numbers given below.
There can be compatibility issues when incorrect IC’s are fitted - even if they have the correct type number.
that although these IC’s may be available from other sources, it is strongly recommended to obtain these
directly from Sharp Electronics (UK) Limited, or their approved distributors, using the part numbers given below.
There can be compatibility issues when incorrect IC’s are fitted - even if they have the correct type number.
IC Reference
Number
IC Type
Number
Sharp Part Number
Function
Package
Comment
Note
IC1001
ST10R272L
RH-IX1685BMZZ
Microprocessor
SMD
Fitted to all models
IC1002
27C4000
Depends on model
EPROM/OTP/MTP
DIL
See note
1
IC1003
24645
RH-IX1603BMZZ
NVM
SMD
Fitted to all models
IC1004
24645 RH-IX1603BMZZ
NVM
SMD
See
note
2
IC1005
PST529
VHIPST529C2-1
Reset for IC1001
Wire
Fitted to all models
IC1300
BA4558
VHIBA4558F/-1
Centre speaker drive
SMD
Not 56FW53H
IC1302
TDA7480
VHITDA7480/-1
Centre speaker audio output
DIL
Not 56FW53H
IC1801
Depends on model
Cathode Drive Amplifier
QIL
Depends upon CRT base
3
IC201
TDA4472
RH-IX1672BMZZ
IF Processor
SMD
Fitted to all models
IC202
BA10393
RH-IX1556BMZZ
AFT Feedback
SMD
Fitted to all models
IC203
UPC574J
RH-IX0037CEZZ
33V Regulator (tuner)
Wire
Fitted to all models
IC301
TDA7480
VHITDA7480/-1
Audio output
DIL
Fitted to all models
IC302
TDA7480
VHITDA7480/-1
Audio output
DIL
Fitted to all models
IC304
M5218L VHIM5218L//-1 Headphone
Amplifier
DIL
Fitted to all models
IC305
MSP3410D
RH-IX1636BMZZ
Audio Processor
DIL
Fitted to all models
IC401
HEF4053
RH-IX1602BMZZ
Video switch
SMD
Fitted to all models
IC501
TDA7480
VHITDA7480/-1
Vertical Output
DIL
Fitted to all models
IC502
BA4558 VHIBA4558F/-1 Vertical
feedback
DIL
Fitted to all models
IC503
BA10393
RH-IX1556BMZZ
AGC and EW control
DIL
Fitted to all models
IC701
PST529
VHIPST529C2-1
Reset for IC702
Wire
Fitted to all models
IC702
ST6203
RH-IX1646BMZZ
Primary Control
SMD
Fitted to all models
IC703
MOC1806
RH-FX0106BMZZ
Opto from microprocessor
SMD
Fitted to all models
IC704
MOC1806
RH-FX0106BMZZ
Opto to microprocessor
SMD
Fitted to all models
IC705
MOC1806
RH-FX0106BMZZ
Power Supply FB
SMD
Fitted to all models
IC706
TL431
RH-IX1674BMZZ
Reference Zener
Wire
Fitted to all models
IC707
L4978
RH-IX1704BMZZ
+5V Regulator
SMD
Fitted to all models
IC708
TLP165J RH-FX0111BMZZ Degauss
Optical
Diac
SMD
Fitted to all models
IC801
Depends on model
Video/Deflection Processor
DIL
See note
4
DA100 (50Hz) and DA50W Chassis – Repair Notes
Page 10 of 80
Sharp Electronics (UK) Limited - May 2003
Revision 3
Note 1 – EPROM Types and Versions
FW Models
EPROM types and versions vary between CRT and Teletext IC types. Refer to the list below for more
information. The EPROM version is normally written on a paper label stuck to the top of the device.
56FW53H:
CRT Type
CRT Part Number
Megatext Type Megatext Part Number
EPROM Version
EPROM Part Number
Thomson VB56EGV230*1N SDA5275 RH-IX1709BMZZ H9-04x03 CH-IX1711CJH7
Philips VB56ESF0203*N
Philips VB56ESF0203*N
SDA5275 RH-IX1709BMZZ H9-05x03 CH-IX1711CJH5
Thomson VB56EGV230*1N SDA5273 RH-IX1673BMZZ H9-03x05
CH-IX1664CJH9
Philips VB56ESF0203*N
SDA5273 RH-IX1673BMZZ H9-02x05 CH-IX1664CJHG
66FW53H:
CRT Type
CRT Part Number
Megatext Type Megatext Part Number
EPROM Version
EPROM Part Number
Thomson VB66EGV2321£N SDA5275
RH-IX1709BMZZ
H5-04x03
CH-IX1711CJH6
Thomson VB66EGV2321£N SDA5273
RH-IX1673BMZZ
H5-03x04
CH-IX1664CJH5
LG
VB66QBD2910£N SDA5273
RH-IX1673BMZZ
H5-02x01
CH-IX1664CJH7
66FW54H:
CRT Type
CRT Part Number
Megatext Type Megatext Part Number
EPROM Version
EPROM Part Number
Thomson VB66EGV2321£N SDA5275 RH-IX1709BMZZ H6-03x03
CH-IX1664CJH6
LG VB66QBD2910£N
SDA5275
RH-IX1709BMZZ
H6-02x03 CH-IX1664CJHE
76FW53H:
CRT Type
CRT Part Number
Megatext Type Megatext Part Number
EPROM Version
EPROM Part Number
Thomson VB76EGV2321*N SDA5275 RH-IX1709BMZZ H5-04x03
CH-IX1711CJH6
LG VB76QAG280W12
SDA5275
RH-IX1709BMZZ H4-00x00 CH-IX1711CJH4
Thomson VB76EGV2321*N SDA5273 RH-IX1673BMZZ H5-03x04
CH-IX1664CJH5
LG VB76QAG280W12
SDA5273
RH-IX1673BMZZ
H5-02x01 CH-IX1664CJH7
76FW54H:
CRT Type
CRT Part Number
Megatext Type Megatext Part Number
EPROM Version
EPROM Part Number
Thomson VB76EGV2321*N SDA5275 RH-IX1709BMZZ H6-03x03
CH-IX1664CJHF
LG VB76QAG280W12
SDA5275
RH-IX1709BMZZ
H6-02x05 CH-IX1664CJHE
28HW53H and 32HW53H:
The part number for IC1002 for both of the above models is CH-IX1841CJH0
DA100 (50Hz) and DA50W Chassis – Repair Notes
Page 11 of 80
Sharp Electronics (UK) Limited - May 2003
Revision 3
GF Models
The table below details the different part numbers for IC1002. Note that this IC can either be an EPROM or a
MTP. An EPROM has a small window in its top to enable the IC to be erased by ultra-violet light. A MTP does
not have this window and normally works at 3.3V.
MTP. An EPROM has a small window in its top to enable the IC to be erased by ultra-violet light. A MTP does
not have this window and normally works at 3.3V.
Model
CRT
EPROM Type
EPROM Part Number
66GF63H Philips
EPROM CH-IX1711CJH1E
66GF63H Thomson MTP
CH-IX1711CJH1M
66GF64H Philips
EPROM CH-IX1711CJH0
76GF63H Philips
MTP
CH-IX1841CJH7
76GF64H Philips
EPROM CH-IX1664CJHAE
76GF64H Philips
MTP
CH-IX1664CJHAM
Note 2 - Second NVM Fitting
Some sets use a second NVM, designated IC1004 to store teletext page information and some audio data in the
case of Dolby Pro-logic models. Sets that have the second NVM fitted are:
66FW54H 76FW54H 66GF64H 76GF63H 76GF64H
The part number for this device is the same as IC1003.
case of Dolby Pro-logic models. Sets that have the second NVM fitted are:
66FW54H 76FW54H 66GF64H 76GF63H 76GF64H
The part number for this device is the same as IC1003.
Note 3 IC1801 Types
IC1801 is the cathode drive amplifier mounted on the CRT base PWB.
Depending upon the chassis type, the CDA IC can be one of three types as listed below:
Depending upon the chassis type, the CDA IC can be one of three types as listed below:
IC Type
Sharp Part Number
Comment
TEA5101A
RH-IX1416BMZZ
All FW and some GF
STV5109 RH-IX1803BMZZ
Some GF and all HW models
TDA6019JF
RH-IX1833BMZZ
Late 56FW53H models
These IC are not interchangeable.
Note 4 – IC801 Types
IC801 can be one of two types. It is either a 3120 or 3130, and they are not interchangeable. The part number
for the VDP3120C2 is RH-IX1688BMN2, the part number for the VDP3130Y is RH-IX1858BMZZ. The 3130 are
fitted in all HW models and some later FW and GF models.
Some patterning can occur when fitting later revisions of the VDP3120C2 to earlier chassis versions. In this
situation remove C824, which is connected from pin 33 of IC801 to ground.
for the VDP3120C2 is RH-IX1688BMN2, the part number for the VDP3130Y is RH-IX1858BMZZ. The 3130 are
fitted in all HW models and some later FW and GF models.
Some patterning can occur when fitting later revisions of the VDP3120C2 to earlier chassis versions. In this
situation remove C824, which is connected from pin 33 of IC801 to ground.
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