DOWNLOAD Sony SA-WCT380 / SA-WCT381 Service Manual ↓ Size: 1.96 MB | Pages: 30 in PDF or view online for FREE

ADVANCE  PREPARATION  WHEN  CONFIRMING  OP-
ERATION
All of the units included in the HT-CT380/CT381 (SA-WCT380/
WCT381, SA-CT380/CT381, Remote control) are required to con-
fi rming operation of SA-WCT380/WCT381. Check in advance 
that you have all of the units.

NOTE  OF  REPLACING  THE  SUB  KEY  BOARD
When the SUB KEY board is defective, replace the complete 
mounted board.

NOTE  OF  REPLACING  THE  IC7400  ON  THE  SUB  MAIN  
BOARD
IC7400 on the SUB MAIN board cannot replace with single. When 
this part is damaged, replace the complete mounted board.

NOTE  OF  REPLACING  THE  IC7203  ON  THE  SUB  MAIN  
BOARD  AND  THE  COMPLETE  SUB  MAIN  BOARD
When IC7203 on the SUB MAIN board and the complete SUB 
MAIN board are replaced, it is necessary to spread the compound 
between the SUB MAIN board and the heat sink.
Spread the compound referring to the fi gure below.

NOTES  ON  THE  WIRELESS  CONNECTION (LINK)  AFTER  
REPAIRS  ARE  COMPLETE
When the parts below is replaced, the wireless connection (LINK) 
of the Bar speaker and Subwoofer will be disconnected.
Before returning repaired products to the customer, follow the pro-
cedure below to LINK the Bar speaker and Subwoofer.
Also, if only the Bar speaker or Subwoofer is brought in for repair 
and the parts below are replaced, be sure to inform the customer 
when returning the repaired products that the customer must LINK 
the Bar speaker and Subwoofer.
(Indicate that the LINK procedure is described in the operating 
instructions)

Parts in which the LINK will be disconnected due to re-
placement:
•  Complete SUB MAIN board
•  RF modulator (SWA12-4V RX) (Ref. No. RF1)

Set up the wireless subwoofer 
connection again.

1

2

Select [WS] with j „ (select), then 
press ENTER.

3

Select [LINK] with j „ (select), then 
press ENTER.

4

When [START] appears on the 
display, press ENTER.
[SEARCH] appears, and the Bar 
Speaker searches for a device that 
can be used with Link. Proceed to 
the next step within 1 minute.
To quit the Link function while 
searching for a device, press BACK.

5

Press LINK on the subwoofer.
The on/standby indicator on the 
subwoofer lights up in green. [OK] 
appears on the display of the Bar 
Speaker.
If [FAILED] appears, check to ensure 
the subwoofer is turned on and 
perform the process again from 
step 1.

6

Press MENU.
The menu turns off.

– Press the Ò/Æ (on/standby) 

button of the subwoofer to turn 
off the power and check 
whether the ventilation opening 
of the subwoofer is blocked or 
not.

Ç

BOND  FIXATION  OF  ELECTRIC  PARTS
When the following parts are replaced, fi x the parts by using the bond (SC608Z2) (Refer to the fi gure below).

Target parts:
< SUB MAIN board >
C7233, C7234, L7202
< SUB POWER board >
C902 or C906, C903 or C908, C904 or C905, C907 or C988, C914 or C915, C935 or C938, C939, C967, C970, C976 to C978, C980, D901, 
L966, LF901, R944, TH901, VDR901

•  This set can be disassembled in the order shown below.

Note: Follow the disassembly procedure in the numerical order given.

‡

 Part No. 

Description

  J-2501-238-A  JIG FOR SPEAKER REMOVAL

5 SUB LED board cable connector 

4 speaker cable connector 

3 Remove two cables from 

2 Remove the sub MAIN block

1 seven tapping screws

u 16)

6 sub AMP block

1 seven tapping screws

u 16)

Note 1: When the complete SUB MAIN board is replaced, refer to 

“NOTE OF REPLACING THE IC7203 ON THE SUB MAIN 
BOARD AND THE COMPLETE SUB MAIN BOARD” and 
“NOTES ON THE WIRELESS CONNECTION (LINK) AF-
TER REPAIRS ARE COMPLETE” on page 5.

3 Remove the wire

2 connector (CN7010)

1 flexible flat cable (24P)

7 two screws

u 8)

5 two screws

u 8)

9 SUB MAIN board

5 screw

u 8)

6 wiring stopper

5 screw

u 8)

8 heat sink

3: When installing the heat sink, spread 

 

 

the compound referring to “NOTE OF 

 

 

REPLACING THE IC7203 ON THE 

  

SUB 

MAIN BOARD AND THE 

 

 

COMPLETE SUB MAIN BOARD” 

 

 

on servicing notes (page 5).

4 connector (CN7201)

2: Before connect this connector, 

 

 

refer to “CAPACITOR 

  

ELECTRICAL 

DISCHARGE 

 

 

PROCESSING” on page 3.