Sharp 25WG3 Service Manual

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original
condition and only parts identical to those specified be used.
• FEATURE ............................................................ 2
• SPECIFICATIONS ...............................................2
• IMPORTANT SERVICE NOTES ......................... 3
• ADJUSTMENT PRECAUTIONS ......................... 3
• SERVICE MODE .................................................. 4
• SERVICE ADJUSTMENT ................................... 7
• TROUBLESHOOTING ...................................... 13
• SOLID STATE DEVICE BASE DIAGRAM ........ 14
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power
receptacle, when servicing this chassis.
To prevent electric shock, do not remove cover. No user-serviceable parts inside. Refer servicing to qualified
service personnel.

SERVICE MANUAL

MODEL
CONTENTS
Page
• WAVEFORMS ................................................... 15
• DESCRIPTION OF SCHEMATIC DIAGRAM .... 15
• BLOCK DIAGRAM ............................................. 16
• CHASSIS LAYOUT ............................................22
• SCHEMATIC DIAGRAM ................................... 24
• PRINTED WIRING BOARD ASSEMBLIES ....... 32
• PARTS LIST ...................................................... 37
WARNING

SHARP CORPORATION

1
COLOUR TELEVISION
Chassis No. SS-1
25WG3
25WG3
SY8A725WG3///
Page