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Service Manual
Supplement
Colour Television EURO 2 Chassis
TX-25MD2C
Specification Parts List Service Support E schematic Y schematic
Notes
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ETD:2002-014
TECHNICAL INFORMATION
Colour Television
Model:Chassis:Date:Subject: Background:
See Page 2 Euro-1, Euro-2L & Euro-2S Page 1/2 10/06/02
TDA8175 Frame Output IC. Due to supplier problems this IC is no longer available and the alternative TDA8177 will have to be used as a replacement. Modification of Deflection circuitry. Using the modification kit TZS9EK026, diagrams & Table carry out the modifications listed. ( All components needed are supplied in the modification kit, use the parts needed for the particular chassis requirement listed in table).
Remedy: Method:
Section 1. Refering to the table on page 2, add or delete components listed under the relevant chassis (Check model list to confirm chassis type) Push the legs of TDA8177 as far through the E-PCB as possible.
Note:Section 2.
Refering to the diagram 1 below remove the resistor shown, the list with diagram relates to the resistor to be removed for each chassis type. Diagram 1
Euro-1 chassis remove R566 Euro-2L chassis remove R455 Euro-2S chassis remove R566
Panasonic
Document No:QUA0011 ISSUE:2
ETD:2002-014
Colour Television
Model:Chassis:Date:Section 3.
TECHNICAL INFORMATION
See Lists Below Euro-1, Euro-2L & Euro-2S 10/06/02 Page 2/2
Attach D-PCB as described below 1. With the components uppermost from the E-PCB align the holes in the D-PCB over the TDA8177 already soldered into place on the E-PCB. 2. Locate the D-PCB on the pins of the TDA8177 and solder into place (See diagram2). (Ensure D-PCB does not touch E-PCB) 3. Connect the Red wire attached to the D-PCB to the position shown on diagram1. Some alignment may have to be carried out in the service mode after modification. Diagram 2
Note:Note:-
Diagram 3 Showing D-PCB Circuitry Shaded
TDA8177 Pins Matching Holes in D-PCB
D-PCB
E-PCB
MODEL & CHASSIS LIST Euro-1 Models
TX-25 & 29A3 Series TX-25 & 28W3 Series
Euro-2L Models
TX-21 & 25MD1 Series TX-25MD2 Series TX-25MD5E TX-25 & 28S1 Series TX-28LD1 Series TX-28LD2 Series TX-28LD5E TX-28LD7C
Euro-2S Models
TX-29,25 & 21AD2 Series TX-25 & 29AD1 Series TX-25 & 28XD1 Series TX-25 & 28XD2 Series TX-28WD1 Series TX-28XD5 Series TX-28XD6 Series TX-28XDP1 Series TX-28XDP2 Series TX-29AD2 Series
Component Alteration Table
Chassis Type Euro- 2L Circuit Ref. IC451 R457 R455 IC561 R579 R566 R576 IC561 R566 R576 R569 Before TDA8175 ER6GEYJ682 ERJ6GEYJ472 TDA8175 ERD25TJ332 ERJ6GEYJ472 ERDS1TJ682 TDA8175 ER025CKF4701 ER025CKF2202 ERDS1TJ221 After TDA8177 ERJ6GEYJ392 NIL TDA8177 ERD25TJ392 NIL ERDS1TJ183 TDA8177 NIL ERD25TJ333 ERDS1TJ471
Euro-2S
Euro-1
Panasonic
Document No:QUA0011 ISSUE:2