3). Noise Filter P.c. Board (Mcc-1749) Replacement Procedure - Toshiba MMY-MUP0721FT6P-UL Service Manual

13-1-7(3). Noise Filter P.C. Board (MCC-1749) Replacement Procedure

Target model 43TN9877: MMY-MUP1201FT9*/1441FT9*/1681FT9*/096H1FT9*/120H1FT9*
Included items:
① MCC-1749 : 1pcs
Replacement Steps:
(1) Turn off the power supply of the outdoor unit
and wait at least 5 minutes for the capacitor to
discharge.
(2) Remove all of the connectors and
terminal
tabs (CN04, CN14, CN15, CN29) attached
to the Noise Filter P.C. board. (Remove the
connectors by pulling the connector body. Do not
pull the wire.)
(3) Remove screws (⑦：12pcs (M6) ) and Line-Filters
which were connected to the Noise Filter P.C.
board.
(4) Remove fuse screws (⑧：4pcs (M6) ) and 2 fuses
which were connected to the Noise Filter P.C.
board.
(If the fuse is not broken, reuse it.)
(5) Remove 8 screws(⑤：6pcs (M3), ⑥：2pcs (M4) ).
(6) Keep the removed screws as they will be reused.
(7) Remove the Noise Filter P.C. board from 6 spacers
(②:4pcs, ③:2pcs).
(8) If spacers (②, ③) are damaged, replace it and
attach bushes(④) to the service P.C. board(①).
(9) Screw the Noise Filter P.C. board by 8 screws
(⑤, ⑥) that were removed in step (5).
(10) Re-connect the fuses and screw terminals(⑧).
(11) Re-connect the connectors and screw
terminals(⑦), Line-Filters, solderless
terminal tabs (CN04, CN14, CN15,
CN29).
Be sure that all the connectors and the
screw terminals are connected correctly
and securely inserted.
(12) If the components on the P.C. board
were bent during board replacement,
adjust it manually ensuring that it is not
short or contact other parts.
(13) Install the cover, then turn on the supply.
Check the operation.
The torque of the screws
⑤
Screw
⑥
Screw
⑦
Screw terminal
② Spacer : 4pcs ③ Spacer : 2pcs
solderless
⑥ Screw(M4)
⑦ RED lead wire
Solderless
terminal
⑥ Screw (M4)
Solderless
terminal
Solderless
terminal
M3 x 0.7" (18mm) 0.44 ft•lbs (0.6 N•m )
M4 x 0.3" (8mm) 0.89 ft•lbs (1.2 N•m )
M6 x 0.47" (12mm) 2.21 ft•lbs (3.0 N•m)
④ Bush : 2pcs
Noise Filter P.C. board
(43TN9877)
⑦ BLACK lead wire
(CN28, M6)
⑧ Screw
② Spacer
(CN26, M6)
⑧ Screw
(M6)
(CN29)
④ Bush
⑤ Screw (M3)
(CN15)
(CN14)
② Spacer
- 348 -
Line-filter are
another service parts.
that is not included.
How to remove a Line-filter
a) Remove the solderless terminal
tabs. (CN04, CN14, CN15, CN29)
b) Remove the screw terminals.
(CN01, CN02, CN03)
c) Remove the screws (CN11, CN12,
CN13), holding the lower Line-filter (L01).
d) Remove the screw (CN21, CN22, CN23),
holding the upper Line-filter(L02).
*L01 and L02 are same parts.
⑦ BLACK lead wire
(CN27, M6)
④ Bush
⑤ Screw (M3)
(M6)
Fuse
⑦ Line Filter(CN12, M6)
⑦ Line Filter(CN13, M6)
② Spacer
Solderless
terminal
④ Bush
⑤ Screw (M3)
Push
Lock pin
2pcs
② Spacer
⑦ RED lead wire
(CN21, M6)
⑦ WHITE lead wire
(CN22, M6)
⑦ BLACK lead wire
(CN23, M6)
③ Spacer
⑦ Line Filter(CN11, M6)
③ Spacer
⑦ RED lead wire
(CN01, M6)
⑦ WHITE lead wire
(CN02, M6)
⑦ BLACK lead wire
(CN03, M6)
(CN04)