Sony HT-CT380, SA-CT381, HT-CT381, SA-CT380 Service Manual

SERVICE MANUAL

Sony Corporation

Published by Sony Techno Create Corporation

HT-CT380/CT381

SA-CT380/CT381

SPECIFICATIONS

HT-CT380/CT381

SOUND BAR

SA-CT380/CT381

ACTIVE SPEAKER SYSTEM

9-896-145-02

2015D33-1

©

2015.04

US Model

Canadian Model

E Model

Australian Model

PX Model

HT-CT380/SA-CT380

AEP Model

UK Model

HT-CT380/CT381/SA-CT380/CT381

Ver. 1.1 2015.04

• All of the units included in the HT­CT380/CT381 (SA-CT380/CT381,
SA-WCT380/WCT381, Remote con­trol) are required to confi rming opera-
tion of SA-CT380/CT381. Check in
advance that you have all of the units.

COMPONENT MODEL NAME

HT-CT380 HT-CT381

Bar Speaker (Active Speaker System) SA-CT380 SA-CT381

Subwoofer (Active Subwoofer) SA-WCT380 SA-WCT381

Amplifier section

U.S. models:

POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(FTC)

Front L + Front R:
With 4 ohms loads, both channels
driven, from 200 Hz - 20,000 Hz; rated
35 Watts per channel minimum RMS
power, with no m ore than 1% total
harmonic distortion from
250 milliwatts to rated output.

POWER OUTPUT (reference)

Front L/Front R: 100 Wa tts (per
channel at 4 ohms, 1 kHz)

Other models:

POWER OUTPUT (rated)

Front L + Front R:
50 W + 50 W (at 4 ohms, 1 kHz, 1%
THD)

POWER OUTPUT (reference)

Front L/Front R: 100 Wa tts (per
channel at 4 ohms, 1 kHz)

Inputs

HDMI IN* 1/2/3
ANALOG IN
DIGITAL IN (TV)

Outputs

HDMI OUT (ARC)

HDMI Section

Connector

Type A (19pin)

BLUETOOTH section

Communication system

BLUETOOTH Sp ecification version 3.0

Output

BLUETOOTH Sp ecification Power C lass
2

Maximum communication range

Line of sight approx. 10 m (33 ft)

1)

Maximum number of devices to be

registered
9 devices

Frequency band

2.4 GHz band (2.4000 GHz -

2.4835 GHz)

Modulation method

FHSS (Freq Hoppin g Spread Spectrum)

Compatible BLUETOOTH profiles

2)

A2DP 1.2 (Advanced Audio Distribution
Profile)
AVRCP 1.3 (Audio Video Remote
Control Profile)

Supported Codecs

3)

SBC4), AAC

5)

Transmission range (A2DP)

20 Hz - 20,000 Hz (Sampling frequency

44.1 kHz)

1)

The actual range will vary depen ding on
factors such as obstacles between
devices, magnetic fields around a
microwave oven, static electricity,
cordless phone , reception sensitivity,
operating system, software application,
etc.

2)

BLUETOOTH stan dard profiles indicate
the purpose of BLUETOOTH
communication between devices.

3)

Codec: Audio signal compression and
conversion format

4)

Subband Codec

5)

Advanced Audio Coding

Front L/Front R speaker section

Speaker system

Full range speaker system,
Acoustic suspension

Speaker

General

Power requirements

120 V AC, 60 Hz (US and Canadian models)
110 V - 240 V AC, 50 Hz/60 Hz (PX model)
220 V - 240 V AC, 50 Hz/60 Hz (Other models)

Power consumption

Dimensions (approx.) (w/h/d)

Mass (approx.)

2.4 kg (5 lb 4

5

/8oz)

Supplied accessories

Remote control (1)
R03 (size AAA) batteries (2)
Optical digital cable (1)
Wall mounting brackets (2) and screws (2)
Speaker pads for the subwoofer (4)
Startup Guide (1)
Operating Instructions (1)

Speaker system

Wireless Sound Specification version

2.0

Frequency band

2.4 GHz (2.4000 G Hz - 2.4835 GHz)

Modulation method

Pi / 4 DQPSK

Design and specifications are subject to
change withou t notice.

Wireless transmitter section

* The 1, 2, and 3 jacks are

identical. Us ing any of them makes n o
difference.

900 mm × 51 mm × 117 mm (35

1

/2in ×

2

1

/8in × 45/8in) (without wall
mounting brackets)
900 mm × 120 mm × 72 mm (35

1

/2in ×

4

3

/4in × 27/8in) (with wall mounting
brackets)

60 mm (2

3

/8 in) cone type

On: 37 W
Standby: 0.3 W or less
(at the Power saving mode)
Standby: 0.5 W or less
(When [S. THRU] is [ON]: 6 W or less)

• Please refer to service manual separately issued for Subwoofer.

Note:

Be sure to keep your PC used for service and
checking of this unit always updated with the
latest version of your anti-virus software.
In case a virus affected unit was found during
service, contact your Service Headquarters.

Photo: SA-CT380

HT-CT380/CT381

2

NOTES ON CHIP COMPONENT REPLACEMENT

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam­aged by heat.

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow­ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.

2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)

1.5 kΩ0.15 μF

AC
voltmeter
(0.75 V)

To Exposed Metal
Parts on Set

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

This system incorporates Dolby* Digital
and the DTS** Digital Surround System.
* Manufactured under license from

Dolby Laboratories.
Dolby, and the double-D symbo l are
trademarks of Dolby Laboratories.

** For DTS patents, see http://

patents.dts.com. Manufactured
under license from DTS Licensing
Limited. DTS, DTS-HD, the Symbol, &

The BLUETOOTH

®

word mark and logos
are registered trademarks owned by
Bluetooth SIG, Inc. and any use of such
marks by Sony Corporation is under
license.

This system incorporates High­Definition Multimedia Interface
(HDMI™) technology.
The terms HDMI and HDMI High­Definition Multimedia Interface, a nd the
HDMI Logo are trademarks or registered
trademarks of HDMI Licensing LLC in the
United States and other coun tries.

The N Mark is a trademark or registered
trademark of NFC Forum, Inc. in the
United States and in other countries.

Android™ and Google Play™ are
trademarks of Google Inc.

Copyrights and Trademarks

Apple, the Apple logo, iPhon e, iPod, and
iPod touch are trademarks of Apple Inc.,
registered in the U.S. and other
countries. App Store is a service mark of
Apple Inc.

“Made for iPod,” and “Made for iPhone ”
mean that an electronic accessory has
been designed to connect spec ifically to
iPod or iPhone, respectively, and has
been certified by the developer to meet
Apple performance standards. Apple is
not responsible for the operation of this
device or its compliance with safety and
regulatory standards. Please note that
the use of this accessory with iPod or
iPhone may affect wireless
performance.

Compatible iPod/iPhone models

T

he compatible iPod/iPhone models
are as follows. Update your iPod/iPhone
with the latest software before using
with the system.

BLUETOOTH technology works with:
iPhone 6 Plus/iPhone 6/iPhone 5s/
iPhone 5c/iPhone 5/iPhone 4s/
iPhone 4/iPhone 3GS
iPod touch (5th generati on)/iPod touch
(4th generation)

“BRAVIA” logo is a trademark of Sony
Corporation.

“DSEE” is a trademark of Sony
Corporation.

“ClearAudio+” is a trademark of Sony
Corporation.

“x.v.Color” and “x.v.Col or” logo are
trademarks of Sony Corporation.

“PlayStation

®

” is a registered trademark

of Sony Computer Entertainment Inc.

Other trademarks and trade names are
those of their respective owners.

DTS and the Symbol together are
registered trademarks of DT S, Inc.
© DTS, Inc. All Rights Reserved.

SAFETY-RELATED COMPONENT WARNING!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC­TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON­NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.

HT-CT380/CT381

3

1. SERVICING NOTES ............................................. 4

2. DISASSEMBLY

2-1. Disassembly Flow ........................................................... 7

2-2. Cabinet Top Block .......................................................... 8

2-3. Loudspeaker (6 cm) (L-ch, R-ch) (SP1, SP2) ................. 9

2-4. NFC Module (NFC1) ...................................................... 10

2-5. DISPLAY Board ............................................................. 11

2-6. POWER Board ................................................................ 12

2-7. Connection Cable with Speaker (L-ch, R-ch)

(SPC1, SPC2) .................................................................. 13

2-8. KEY Board Block ........................................................... 14

2-9. Button, KEY Board ......................................................... 15

2-10. RF Modulator (RF1) ....................................................... 16

2-11. MAIN Board ................................................................... 17

2-12. Power Cord (AC1) .......................................................... 18

2-13. Bluetooth Module (BT1) ................................................ 19

2-14. Chassis (Main) Block ...................................................... 20

2-15. Service Position .............................................................. 21

3. TEST MODE ............................................................ 22

4. TROUBLESHOOTING .......................................... 27

5. DIAGRAMS

5-1. Block Diagram - HDMI Section - ................................... 31

5-2. Block Diagram - MAIN Section - ................................... 32

TABLE OF CONTENTS

5-3. Block Diagram - AMP Section - ..................................... 33

5-4. Block Diagram

- PANEL/POWER SUPPLY Section - ............................ 34

5-5. Printed Wiring Boards - MAIN Section (1/2) - .............. 36

5-6. Printed Wiring Board - MAIN Section (2/2) - ................ 37

5-7. Schematic Diagram - MAIN Section (1/6) - ................... 38

5-8. Schematic Diagram - MAIN Section (2/6) - ................... 39

5-9. Schematic Diagram - MAIN Section (3/6) - ................... 40

5-10. Schematic Diagram - MAIN Section (4/6) - ................... 41

5-11. Schematic Diagram - MAIN Section (5/6) - ................... 42

5-12. Schematic Diagram - MAIN Section (6/6) - ................... 43

5-13. Printed Wiring Board - DISPLAY Board - ..................... 44

5-14. Schematic Diagram - DISPLAY Board - ........................ 45

5-15. Printed Wiring Board - POWER Board - ........................ 46

5-16. Schematic Diagram - POWER Board - .......................... 47

6. EXPLODED VIEWS

6-1. Overall Section ............................................................... 57

6-2. Top Cabinet Section ........................................................ 58

6-3. Bottom Cabinet Section .................................................. 59

6-4. MAIN Board Section ...................................................... 60

7. ELECTRICAL PARTS LIST .............................. 61

Accessories are given in the last of the electrical parts list.

HT-CT380/CT381

4

SECTION 1

SERVICING NOTES

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead­free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be

applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to

about 350 °C.
Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to fl ow)

than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may

also be added to ordinary solder.

NOTE OF PERFORMING THE OPERATION CHECK IN
THE STATE THAT HEAT SINK WAS REMOVED

When performing the operation check in the state that this unit was
disassembled, it is possible to perform the operation check in the
state that heat sink was removed. But don’t perform the operation
check in the long time, and perform the operation check in the
volume state as low as possible.

CAPACITOR ELECTRICAL DISCHARGE PROCESSING

When checking the board, for the electric shock prevention, con­nect the resistors to both ends of respective capacitors to discharge
the capacitor.

Note 1: When the connector that connects the POWER board to the MAIN

board is disconnected before discharging, completely fi nish dis-
charging both boards, and then reconnect the connector. If dis­charging is not complete, sparking may occur when connecting the
connector and cause a blown fuse.

Note 2: Be sure to discharge using a resistor of 800 Ω or higher.
(Do not discharge with a 0 Ω resistor)
Discharging at a location where excessive electric current fl ows

through a fuse may cause the fuse to blow.

– MAIN Board (Side A) –

C3015

C3016

800 :/2 W

800 :/2 W

– POWER Board (Conductor Side) –

C967

800 :/2 W

800 :/2 W

C914 (US and Canadian models)
C915 (Except US and Canadian models)

The SERVICING NOTES contains important information for servicing. Be sure to read this section before repairing the unit.

MODEL IDENTIFICATION

Distinguish by Part No., destination code and color on the bottom side of the main unit.

– Bottom view –

MODEL LABEL

Part No.
Destination code

Model Part No. Destination code

SA-CT380: US,CND

4-559-882-0[]

UC2

SA-CT380: AEP

4-559-883-0[]

CEL/B

SA-CT380: EA3

4-564-730-0[]

EA3

SA-CT381: AEP

4-564-737-0[]

CEL/S

SA-CT381: UK

4-565-719-0[]

CEK/S

SA-CT380: UK

4-565-720-0[]

CEK/B

SA-CT380: PX

4-565-721-0[]

PX3

SA-CT380: SP

4-565-722-0[]

SP1

SA-CT380: E3

4-565-729-0[]

E3

SA-CT380: AUS

4-565-730-0[]

AU1

Ver. 1.1

HT-CT380/CT381

5

DESTINATION ABBREVIATIONS

The following abbreviations for model destinations are used in this
service manual.

• Abbreviations
AUS : Australian model
CND : Canadian model
E3 : African and Iranian models
EA3 : Saudi Arabia, UAE, Kuwait, Iraqi, Kenyan, Tanzanian and

Nigerian models

SP : Singapore model

ADVANCE PREPARATION WHEN CONFIRMING OP­ERATION

All of the units included in the HT-CT380/CT381 (SA-CT380/
CT381, SA-WCT380/WCT381, Remote control) are required to
confi rming operation of SA-CT380/CT381. Check in advance that
you have all of the units.

NOTE OF REPLACING THE KEY BOARD

When the KEY board is defective, replace the complete mounted
board.

NOTE OF REPLACING THE IC1009, IC1010, IC1012,
IC2008, IC2009 AND IC3109 ON THE MAIN BOARD

IC1009, IC1010, IC1012, IC2008, IC2009 and IC3109 on the
MAIN board cannot replace with single. When these parts are
damaged, replace the complete mounted board.

NOTE OF REPLACING THE IC3001 ON THE MAIN
BOARD AND THE COMPLETE MAIN BOARD

When IC3001 on the MAIN board and the complete MAIN board
are replaced, it is necessary to spread the compound between the
MAIN board and the heat sink.
Spread the compound referring to the fi gure below.

– MAIN Board (Side A) –

IC3001

compound

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 pro­cedure 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 re­placement:

• Complete MAIN board

• IC1002 on the MAIN board (microprocessor)

• RF modulator (SWA12-4V TX) (Ref. No. RF1)

Linking the system (Link to the Subwoofer)

Set up the wireless subwoofer
connection again.

1 Press MENU.
2 Select [WS] with

j 

(select), then

press ENTER.

3 S elect [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.

IF “PRTECT (PROTECT)” APPEARS ON THE FRONT
PANEL DISPLAY OF THE BAR SPEAKER

 Press the Ò/Æ (on/standby) button

on the Bar Speaker to turn off the
system. After the display stops
flashing, disconnect the AC power
cord (mains lead) then check that
nothing is blocking the ventilation
holes of the Bar Speaker.

Ver. 1.1

HT-CT380/CT381

6

BOND FIXATION OF ELECTRIC PARTS

When complete POWER board or the following parts are replaced, it is necessary to fi x the parts by using the bond (SC608Z2) (Refer to
the fi gure below).

• POWER board:

C902 or C906, C903 or C908, C904 or C905, C907 or C988, C914 or C915, C967, C970, C976, C978, C980, C990, D901, LF901,

R914, R944, TH901, VDR901

(C978, C980: Except US and Canadian models only)

– POWER Board (Component Side) –

C914/915

C902/906

C903/908

C907/988

D901

TH901

LF901

C904/905

VDR901

R914

R944

C967

C970

C990

C976

C980

C978

(Except US and Canadian models only)

Ver. 1.1

HT-CT380/CT381

7

SECTION 2

DISASSEMBLY

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

2-1. DISASSEMBLY FLOW

SET

2-14. CHASSIS (MAIN) BLOCK
(Page 20)

2-12. POWER CORD (AC1)
(Page 18)

2-13. BLUETOOTH MODULE (BT1)
(Page 19)

2-8. KEY BOARD BLOCK
(Page 14)

2-9. BUTTON, KEY BOARD
(Page 15)

2-11. MAIN BOARD
(Page 17)

2-2. CABINET TOP BLOCK
(Page 8)

2-15. SERVICE POSITION
(Page 21)

2-3. LOUDSPEAKER (6 cm) (L-CH, R-CH) (SP1, SP2)
(Page 9)

2-4. NFC MODULE (NFC1)
(Page 10)

2-5. DISPLAY BOARD
(Page 11)

2-6. POWER BOARD
(Page 12)

2-7. CONNECTION CABLE WITH SPEAKER
(L-CH, R-CH) (SPC1, SPC2)
(Page 13)

2-10. RF MODULATOR (RF1)
(Page 16)

HT-CT380/CT381

8

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

2-2. CABINET TOP BLOCK

1 seven screws
(BVTP3 u 10)

1 seven screws
(BVTP3 u 10)

1 five screws
(BVTP3 u 10)

– Bottom view –

6 cabinet top block

– Rear view –

loudspeaker (6 cm) (L-ch) (SP1)

:LUHVHWWLQJ

[gray]
(wide side)

[black]
(narrow side)

2 Remove the cabinet top
block in the direction of
the arrow.

4 flexible flat cable
(18 core) (FFC3)
(CN1002)

3 filament tape
(sub material)

terminal [red]
(wide side)

terminal [gray]
(wide side)

terminal [black]
(narrow side)

terminal [black]
(narrow side)

5 Push the protrusion,
and remove the
terminal (narrow side).

protrusion

Push

5 Push the protrusion,
and remove the
terminal (wide side).

protrusion

Push

5 Push the protrusion,
and remove the
terminal (wide side).

5 Push the protrusion,
and remove the
terminal (narrow side).

protrusion

Push

loudspeaker (6 cm) (R-ch) (SP2)

:LUHVHWWLQJ

[red]
(wide side)

[black]
(narrow side)

)OH[LEOHIODWFDEOH))&VHWWLQJ

CN1002

flexible flat cable
(FFC3)

filament tape
(sub material)

front
side

terminal face

protrusion

Push

colored line

Insert straight into the interior.

flexible flat
cable

connector

OK

colored line

Insert at a slant.

flexible flat
cable

connector

NG

+RZWRLQVWDOOWKHIOH[LEOHIODWFDEOH

When installing the flexible flat cable, ensure that
the colored line is parallel to the connector after insertion.

Note:

Please spread a sheet under a

unit not to injure cabinet top.

HT-CT380/CT381

9

2-3. LOUDSPEAKER (6 cm) (L-CH, R-CH) (SP1, SP2)

/RXGVSHDNHUFP5FK63setting

narrow terminal side wide terminal side

2 loudspeaker (6 cm)
(R-ch) (SP2)

1 four screws
(3.5)

loudspeaker (6 cm)
(R-ch) (SP2)

“R” mark

front side

outside inside

/RXGsSeDNeUFP/FK63setting

narrow terminal side wide terminal side

2 loudspeaker (6 cm)
(L-ch) (SP1)

1 four screws
(3.5)

loudspeaker (6 cm)
(L-ch) (SP1)

front side

–&DEinettRSERttRPYieZ–

inside outside

rear side

cabinet top block

left side

right side

front side

Note 2:

Please spread a sheet under a

unit not to injure cabinet top.

Note 1:

When installing the loudspeaker
(6 cm) (R-ch) (SP2), check the
presence of a "R" mark.

HT-CT380/CT381

10

2-4. NFC MODULE (NFC1)

3 Peel off the
release paper.

4 Install the NFC
module (NFC1) to
the cabinet top.

2 flexible flat cable
(6 core) (FFC4)

5 Slant to insert the

sheet (NFC) into
the slot.

slot

1 Paste the double
adhesive tape (NFC).

NFC module
(NFC1)

6 Insert the sheet
(NFC) in the
other slot.

sheet (NFC)

NFC module
(NFC1)

filament tape
(sub material)

flexible flat cable
(6 core) (FFC4)

Terminal face is
below side.

sheet (NFC) slot

colored line

Insert straight into the interior.

flexible flat
cable

connector

OK

colored line

Insert at a slant.

flexible flat
cable

connector

NG

 How to install the flexible flat cable

When installing the flexible flat cable,
ensure that the colored line is parallel
to the connector after insertion.

 How to install the NFC module (NFC1)

Note:

Please spread a sheet under a

unit not to injure cabinet top.

4 sheet (NFC)

2 Peel off the double

adhesive tape (NFC).

5 NFC module
(NFC1)

3 flexible flat cable
(6 core) (FFC4)

1 filament tape
(sub material)

– Cabinet top bottom view –

– NFC module bottom view –

rear side

cabinet top block

left side

right side

front side

 Flexible flat cable (FFC) settinJ

HT-CT380/CT381

11

2-5. DISPLAY BOARD

6 flexible flat cable
(6 core) (FFC4) (CN804)

4 flexible flat cable
(18 core) (FFC3) (CN803)

1 two screws
(BVTP3 u 8)

1 two screws
(BVTP3 u 8)

8 two screws
(BVTP3 u 8)

8 two screws
(BVTP3 u 8)

7 packing (CZ2)

0 DISPLAY board

9 cover (FL-CZ2) assy

5 non woven fabric

(T0.3)

2 Remove the DISPLAY board block
in the direction of the arrow.

3 filament tape
(sub material)

Note:

Please spread a sheet under a

unit not to injure cabinet top.

– Cabinet top bottom view –

rear side

cabinet top block

left side

right side

front side

colored line

Insert straight into the interior.

flexible flat
cable

connector

OK

colored line

Insert at a slant.

flexible flat
cable

connector

NG

 How to install the flexible flat cable

When installing the flexible flat cable, ensure that
the colored line is parallel to the connector after insertion.

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DISPLAY board

DISPLAY board

non woven fabric
(T0.3)

flexible flat cable
(FFC4)

flexible flat cable
(6 core) (FFC4)

flexible flat cable
(18 core) (FFC3)

flexible flat cable
(FFC3)

filament tape
(sub material)

Terminal face is
below side.

Terminal face is
below side.

guide line

fold

packing (CZ2)

DISPLAY board

HT-CT380/CT381

12

2-6. POWER BOARD

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wiring stopper

Dress the wiring stopper
toward the arrow direction.

CN901

6 POWER board

5 two screws

(BV3)

5 two screws
(BV3)

1 Remove the wire
from the wiring stopper
with cushion (CZ2-A).

3 Remove the power cord
from the wiring stopper.

4 power cord connector
(CN901)

cabinet (bottom) block

Insert only part way.Insert straight into

the interior.

connector

Insert at a slant.

connector

connector

connector

connector connector

OK NG NG

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Insert the connector straight into the interior.
There is a possibility that using this unit without
the connector correctly installed will damage it.

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Note 3:

Do not pass the wire close to the heat sink.

MAIN board

CN1005

wiring stopper

cushion (CZ2-A)

CN3002

CN3005

heat sink

heat sink

2 connector (CN1005)

Note 2:

Before connect this connector, refer to “CAPACITOR

ELECTRICAL DISCHARGE PROCESSING” on page 4.

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Note 4:

Paste the cushion (CZ2-A) to

screw head and wiring stopper.

wiring stopper

screw head

cushion
(CZ2-A)

Insert only part way.Insert straight into

the interior.

connector

connector

Insert at a slant.

connector connector

connector

connector

OK NG NG

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Insert the connector straight into the interior.
There is a possibility that using this unit without
the connector correctly installed will damage it.

Note 1: When the complete POWER board is replaced, refer to “BOND

FIXATION OF ELECTRIC PARTS” on page 6.

HT-CT380/CT381

13

2-7. CONNECTION CABLE WITH SPEAKER (L-CH, R-CH) (SPC1, SPC2)

Insert only part way.Insert straight into

the interior.

connector

Insert at a slant.

connector

connector

connector

connector connector

OK NG NG

 How to install the connector

Insert the connector straight into the interior.
There is a possibility that using this unit without
the connector correctly installed will damage it.

2 connector
(CN3002)

2 connector
(CN3001)

3 connection cable with speaker
(R-ch) (SPC2)

3 connection cable
with speaker
(L-ch) (SPC1)

1 cushion (CZ2-A)

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Push

Push

Push

CN3001

Vent hole

Note:

Do not block the vent hole in the connection cable with

speaker (R-ch) (SPC2).

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Push

Push

Push

Push

CN3002

cushion (CZ2-A)

Push

cabinet (bottom) block

HT-CT380/CT381

14

2-8. KEY BOARD BLOCK

2 two screws
(BVTP3 u 10)

1 connector
(CN1009)

4 KEY board block

Insert only part way.Insert straight into

the interior.

connector

Insert at a slant.

connector

connector

connector

connector connector

OK NG NG

 How to install the connector

Insert the connector straight into the interior.
There is a possibility that using this unit without
the connector correctly installed will damage it.

 How to install the KEY board block

cabinet (bottom) block

bracket (BTN-CZ2)

screw hole

cabinet (bottom) assy

five buttons

button (CZ2)

3 Remove the KEY board block
in the direction of the arrow.

screw hole

Note:

Align five buttons into the holes and align bracket (BTN-CZ2)

into two screw holes.

HT-CT380/CT381

15

2-9. BUTTON, KEY BOARD

1 three screws
(BVTP2.6)

7 KEY board

5 connector

(CN701)

4 button (CZ2)

3 cushion (CZ2-A)

6 cushion (CZ2-A)

2 bracket (BTN-CZ2)

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button (CZ2)

cushion (CZ2-A)

cushion (CZ2-A)

Note 2:

Do not press this area during affixing.

Note 1:

Align to cover total nine ribs as shown.

KEY board

five tact switches

four ribs

five ribs

Insert only part way.Insert straight into

the interior.

connector

Insert at a slant.

connector

connector

connector

connector connector

OK NG NG

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Insert the connector straight into the interior.
There is a possibility that using this unit without
the connector correctly installed will damage it.

HT-CT380/CT381

16

2-10. RF MODULATOR (RF1)

4 screw
(P3 u 8)

2 cushion (sound)

5 Remove the RF modulator block

in the direction of the arrow.

6 RF modulator
(RF1)

3 flexible flat cable
(24 core) (FFC2)

1 connector
(CN1003)

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flexible flat cable
(FFC2)

push

cushion
(sound)

RF modulator
(RF1)

terminal face

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Terminal face is
below side.

connector
(CN1003)

cabinet (bottom) block

colored line

Insert straight into the interior.

flexible flat
cable

connector

OK

colored line

Insert at a slant.

flexible flat
cable

connector

NG

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When installing the flexible flat cable, ensure that
the colored line is parallel to the connector after insertion.

Note: When the RF modulator (Ref. No. RF1) is replaced, refer to

“NOTES ON THE WIRELESS CONNECTION (LINK) AFTER
REPAIRS ARE COMPLETE” on page 5.

HT-CT380/CT381

17

Note 2: When the complete MAIN board is replaced, refer to “NOTE

OF REPLACING THE IC3001 ON THE MAIN BOARD AND
THE COMPLETE MAIN BOARD” and “NOTES ON THE
WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE
COMPLETE” on page 5.

2-11. MAIN BOARD

4 two screws
(BVTP3 u 8)

8 five screws
(BV3)

8 screw
(BV3)

8 screw

(BV3)

qa MAIN board

9 wiring stopper

7 bracket (FFC-CZ2)

6 two screws

(BV3)

1 Remove the wire from the wiring stopper
with cushion (CZ2-A).

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3 flexible flat cable (14 core)
(FFC1) (CN2001)

0 screw
(B3 u 5)

0 three screws
(B3 u 5)

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Terminal face is
below side.

connector
(CN2001)

Note 5:

Do not pass the wire close to the heat sink.

cabinet (bottom) block

5 heat sink (CZ2)

Note 3:

When you install the heat sink (CZ2), spread the compound referring
to “NOTE OF REPLACING THE IC3001 ON THE MAIN
BOARD AND THE COMPLETE MAIN BOARD” on page 5.

2 connector (CN1005)

Note 4: B

efore connect this connector, refer to “CAPACITOR

ELECTRICAL DISCHARGE PROCESSING” on page 4.

colored line

Insert straight into the interior.

flexible flat
cable

connector

OK

colored line

Insert at a slant.

flexible flat
cable

connector

NG

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When installing the flexible flat cable,
ensure that the colored line is parallel
to the connector after insertion.

Note 7:

Please use the short screwdriver.

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Note 6:

Paste the cushion (CZ2-A) to

screw head and wiring stopper.

MAIN board

CN1005

wiring stopper

wiring stopper

screw head

short screwdriver

cushion
(CZ2-A)

cushion (CZ2-A)

CN3002

CN3005

heat sink

heat sink

Note 1: When removing the MAIN board, you need the full length is

short screwdriver.

If that has not been available a short screwdriver, remove the

MAIN board after removing the chassis (MAIN) block, refer to
“2-14. CHASSIS (MAIN) BLOCK” on page 20.

HT-CT380/CT381

18

2-12. POWER CORD (AC1)

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wiring stopper

Dress the wiring stopper
toward the arrow direction.

CN901

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1 Remove the power cord
from the wiring stopper.

2 connector
(CN901)

4 Draw out the power cord
from the hole.

7 power cord
(AC1)

3 Remove the cord bushing (FBS001)

in the direction of the arrow.

6 cord bushing
(FBS001)

5 claw

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power cord
(AC1)

cord bushing
(FBS001)

claw

70 +5, -0 mm

to POWER board

claw Claw is on the lower side.

Note:

When installing the power cord (AC1),
check the direction of claw of cord bushing
(FBS001) and install correctly.

cabinet (bottom) block

Insert only part way.Insert straight into

the interior.

connector

connector

Insert at a slant.

connector connector

connector

connector

OK NG NG

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Insert the connector straight into the interior.
There is a possibility that using this unit without
the connector correctly installed will damage it.

OK NG

HT-CT380/CT381

19

2-13. BLUETOOTH MODULE (BT1)

1 screw
(BVTP2.6)

4 bluetooth module
(BT1)

2 flexible flat cable (14 core)
(FFC1)

3 non woven fabric (T0.3)

bluetooth module
(BT1)

non woven fabric
(T0.3)

guide line

– Bluetooth module rear view –

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bluetooth module
(BT1)

flexible flat cable
(14 core) (FFC1)

Terminal face is
below side.

colored line

Insert straight into the interior.

flexible flat
cable

connector

OK

colored line

Insert at a slant.

flexible flat
cable

connector

NG

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When installing the flexible flat cable, ensure that
the colored line is parallel to the connector after insertion.

cabinet (bottom) block

HT-CT380/CT381

20

2-14. CHASSIS (MAIN) BLOCK

3 wiring stopper

2 screw

(BVTP3 u 10)

2 eleven screws

(BVTP3 u 10)

2 four screws
(BVTP3 u 10)

5 chassis (MAIN) block

cabinet (bottom) block

1 flexible flat cable (14 core)
(FFC1) (CN2001)

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Terminal face is
below side.

connector
(CN2001)

4 Remove the chassis (MAIN) block
in the direction of the arrow.

colored line

Insert straight into the interior.

flexible flat
cable

connector

OK

colored line

Insert at a slant.

flexible flat
cable

connector

NG

+RZWRLQVWDOOWKHIOH[LEOHIODWFDEOH

When installing the flexible flat cable, ensure that
the colored line is parallel to the connector after insertion.

HT-CT380/CT381

21

2-15. SERVICE POSITION

MAIN board

POWER board

HT-CT380/CT381

22

SECTION 3

TEST MODE

1. TEST MODES OTHER THAN THE TEST MODE MENU

These are executable test mode even if not entering the test mode
menu.

1-1. Cold Reset

It can initialize various backup information.

Procedure:

1. Press the [

?/1

] button to turn the power on.

2. Press the [

?/1

] button for ten seconds.

3. The message “RESET” is displayed on the fl uorescent indica-
tor tube, then turn the power off.

2. TEST MODES IN THE TEST MODE MENU

These are the test modes done in the test mode menu.

Setting method of the test mode menu:

1. Press the [

?/1

] button to turn the power on.

2. Press the two buttons of the [INPUT] and [VOLUME +] si­multaneously for fi ve seconds.

3. The message “PANEL” blinks on the fl uorescent indicator
tube and enter the test mode menu.

Releasing method of the test mode menu:

Press the [

?/1

] button to release the test mode menu.

2-1. Panel Test Mode

It can check the lighting of fl uorescent indicator tube and LED,
operation of buttons, display of model name, destination and soft­ware version.

Procedure:

1. Enter the test mode menu.
(Refer to “Setting method of the test mode menu”)

2. In the state of blinking the “PANEL” on the fl uorescent indica-
tor tube, press the [INPUT] button.

3. All segments in the fl uorescent indicator tube and LED (Blue-
tooth indicator) are lighted up.

4. When pressing the [VOLUME +] button, the display on the
fl uorescent indicator tube repeatedly changes in order from all
lighting → pattern 1 (Bluetooth indicator lights off) → pattern
2 (Bluetooth indicator lights up).

All lighting

Pattern 1

Pattern 2

5. In the state of step 4, press the [VOLUME –] button and “K 0”
is displayed on the fl uorescent indicator tube.

Each time a button is pressed, “K 0” value increases. However,

once a button is pressed, it is no longer taken into account.

When pressing the all buttons, “OK” and “K 5” are alternately

displayed on the fl uorescent indicator tube.

– Continued on next page –