Sharp 76GF-63 (serv.man2) Service Manual ▷ View online
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.
DA100 (50Hz) and DA50W Chassis – Repair Notes
Page 12 of 80
Sharp Electronics (UK) Limited - May 2003
Revision 3
Dolby Pro Logic PWB
The Dolby Pro-Logic PWB has the following IC list. Note that some of the reference numbers are the same as
the IC’s fitted on the centre speaker PWB.
the IC’s fitted on the centre speaker PWB.
IC
Reference
Number
IC Type
Number
Sharp Part
Number
Function of IC
Package
Type
IC1301 DPL3519A
RH-IX1679BMZZ
Pro-Logic
Processor
DIL
IC1302
TDA7480
VHITDA7480/-1
Left Audio Output Amplifier
DIL
IC1303
TDA7480
VHITDA7480/-1
Right Audio Output Amplifier
DIL
IC1304 TDA7480
VHITDA7480/-1
Surround
Output
Amplifier
DIL
IC1305
TDA7481
VHITDA7481/-1
Sub-woofer Output Amplifier
DIL
IC1701
KA431AZ
RH-IX1674BMZZ
Power Supply Reference
Wire
IC1702
KA431AZ
RH-IX1674BMZZ
5V Supply Reference
Wire
IC1703
MOC8106
RH-FX0106BMZZ
Power Supply Feed Back
SMD
DA100 (50Hz) and DA50W Chassis – Repair Notes
Page 13 of 80
Power Supply
This power supply has been used in many Sharp television receivers during the past six years and is reliable. It
works by changing both the pulse width and frequency of operation, this enables correct regulation of the
secondary supplies. The major difference between the models is the amount of current that the power supply
can provide; this is reflected in the wattage consumed from the AC supply. Note that later versions of the
chassis have a power factor module fitted between the power supply and the mains input. The function of this is
to ensure that current is drawn over the complete input voltage cycle, not just at the peaks.
It is important to note that when the receiver is in the standby mode, the power supply is turned off, this
reduces power consumption to less than 3W. When pin 15 of IC702 is high (5VDC), Q702 is turned on and the
gate of the FET is effectively taken to ground, stopping the charging operation of C714. To turn the set on, pin
15 goes low (open circuit), this allows the charge to build up on C714 and thus the transistor turns on and the
power supply starts.
works by changing both the pulse width and frequency of operation, this enables correct regulation of the
secondary supplies. The major difference between the models is the amount of current that the power supply
can provide; this is reflected in the wattage consumed from the AC supply. Note that later versions of the
chassis have a power factor module fitted between the power supply and the mains input. The function of this is
to ensure that current is drawn over the complete input voltage cycle, not just at the peaks.
It is important to note that when the receiver is in the standby mode, the power supply is turned off, this
reduces power consumption to less than 3W. When pin 15 of IC702 is high (5VDC), Q702 is turned on and the
gate of the FET is effectively taken to ground, stopping the charging operation of C714. To turn the set on, pin
15 goes low (open circuit), this allows the charge to build up on C714 and thus the transistor turns on and the
power supply starts.
Figure 2: Power Supply Layout (Component Side)
Figure 3: Power Supply Component Locations (Print Side)
Sharp Electronics (UK) Limited - May 2003
Revision 3
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