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

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

Target model 43TN9878: MMY-MUP****FT6*
Included items:
① MCC-1748 : 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),
screw terminals(⑦：9pcs), Line-Filter which
were connected to the Noise Filter P.C. board.
(Remove the connectors by pulling the
connector body. Do not pull the wire.)
(3) Remove 8 screws(⑤：6pcs, ⑥：2pcs).
(These screws are to be re-used after procedure.)
(4) Remove the P.C. board from 6 spacers
(②:4pcs, ③:2pcs).
(5) Using new spacers(②, ③), bushes(④),
attach the service board.
(6) Screw the Noise Filter P.C. board by 8 screws
(⑤, ⑥) that were removed in step (3).
(7) 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.
(8) 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.
(9) Install the cover, then turn on the supply.
Check the operation.
The torque of the screws
② Spacer : 4pcs ③ Spacer : 2pcs
solderless
⑥ Screw
Solderless
terminal
④ Bush
⑤ Screw
④ Bush
⑤ Screw
⑥ Screw
Solderless
terminal
Solderless
terminal
② Spacer
Solderless
terminal
⑤
Screw
⑥
Screw
⑦
Screw terminal
④ Bush : 2pcs
Noise Filter P.C. board
43TN9878
(
② Spacer
(CN29)
(CN15)
(CN14)
(CN04)
M3×18 0.44 ft•lbs (0.6 N•m )
M4×8 0.89 ft•lbs (1.2 N•m)
M6×12 2.21 ft•lbs (3.0 N•m)
- 346 -
)
Line-filter are
another service parts.
Is not included.
How to remove a Line-filter
a) Remove the solderless terminal
tabs. (CN05, 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.
④ Bush ⑤ Screw
④ Bush ⑤ Screw
④ Bush
⑤ Screw
④ Bush
⑤ Screw
Push
Lock pin
2pcs
② Spacer
⑦ RED lead wire
(CN21)
⑦ WHITE lead wire
(CN22)
⑦ BLACK lead wire
(CN23)
③ Spacer
⑦ Line Filter(CN11)
⑦ Line Filter(CN12)
⑦ Line Filter(CN13)
③ Spacer
⑦ RED lead wire
(CN01)
⑦ WHITE lead wire
(CN02)
⑦ BLACK lead wire
(CN03)
② Spacer