Sony GTK-XB5 User manual

SERVICE MANUAL
Sony Video & Sound Products Inc.
SPECIFICATIONS
HOME AUDIO SYSTEM
9-896-299-05
2017B33-1
© 2017.02
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Ver. 1.4 2017.02
50 mm (2in) × 2, cone type
130 mm (5 in) × 2, cone type
Voltage 2 V, impedance 10kilohms
Voltage 2 V, impedance 600ohms
Speaker section
Tweeter:
Woofer:
Inputs
AUDIO/PARTY CHAIN IN L/R:
Outputs
AUDIO/PARTY CHAIN OUT L/R:
BLUETOOTH section
Communication system:
BLUETOOTH Standard version 3.0
Output:
BLUETOOTH Standard Power Class 2
Maximum communication range:
Line of sight approx. 10 m (33 feet)1)
Frequency band:
2.4 GHz band (2.4000 GHz –
2.4835 GHz)
Modulation method:
FHSS (Freq Hopping Spread
Spectrum)
Compatible BLUETOOTH proles2):
A2DP (Advanced Audio Distribution
Prole)
AVRCP (Audio Video Remote Control
Prole)
SPP (Serial Port Prole)
Supported codecs:
SBC (Sub Band Codec)
AAC (Advanced Audio Coding)
LDAC
1) The actual range will vary depending
on factors such as obstacles between
devices, magnetic elds around a
microwave oven, static electricity,
reception sensitivity, antenna’s
performance, operating system, software
application, etc.
2) BLUETOOTH standard proles indicate the
purpose of BLUETOOTH communication
between devices.
General
Power requirements:
60 Hz
Power consumption:
Standby power consumption:
When BLUETOOTH standby mode is
When BLUETOOTH standby mode is
ports on)
Dimensions (W/H/D) (Approx.):
Mass (Approx.):
Quantity of the system:
1 piece
Supplied accessories:
AC power cord (1)
50/60 Hz
North American model: AC 120 V,
Other models: AC 120 V – 240 V,
50/60 Hz
Korean model: AC 220 V – 240 V,
50/60 Hz
Taiwan model: AC 120 V,
30W
set to o: 0.5W (eco mode)
set to on: 2.8W (all wireless network
262mm × 524mm × 273mm
(10 in × 20 in × 10 in)
7kg (15lb 7oz)
AC plug adaptor* (1) (E4, SP6, LA)
* This plug adaptor is not for the use
in Chile, Paraguay and Uruguay. Use
this plug adaptor in the countries
where it is necessary.
Design and specications are subject to
change without notice.
GTK-XB5

GTK-XB5
2
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON 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 0SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
License and Trademark
Notice
sThe 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. Other
trademarks and trade names are
those of their respective owners.
sThe N-Mark is a trademark or
registered trademark of NFC Forum,
Inc. in the United States and in other
countries.
sGoogle Play and Android are
trademarks of Google Inc.
sLDAC™ and LDAC logo are
trademarks of Sony Corporation.
sApple, the Apple logo, iPhone, 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.
s“Made for iPod” and “Made for
iPhone” mean that an electronic
accessory has been designed to
connect specifically 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.
sWALKMAN and WALKMAN logo
are registered trademarks of Sony
Corporation.
sAll other trademarks and registered
trademarks are of their respective
holders. In this manual, TM and ®
marks are not specified.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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.

GTK-XB5
3
1. SERVICING NOTES ............................................. 4
2. DISASSEMBLY
2-1. Disassembly Flow........................................................... 5
2-2. Top Cover Block ............................................................. 6
2-3. MAIN Board ................................................................... 7
2-4. POWER Board................................................................ 8
2-5. NFC Board, CONTROL Board ...................................... 9
2-6. Right Side Panel, Left Side Panel................................... 10
2-7. Metal Case Block............................................................ 11
2-8. Bottom Cover + Plate ..................................................... 12
2-9. Front Panel Block-1 ........................................................ 13
2-10. Front Panel Block-2 ........................................................ 14
2-11. SPEAKER LED (TOP) Board, FLASH LED Board...... 15
2-12. TUBE LED RIGHT Board, TUBE LED LEFT Board... 16
2-13. SPEAKER LED (BTM) Board, TUBE LED Board....... 16
2-14. Speaker Unit (TW) (SP3, SP4) ....................................... 17
2-15. Speaker Unit (WF) (SP1, SP2) ....................................... 18
3. TEST MODE ............................................................ 19
4. DIAGRAMS
4-1. Block Diagram................................................................ 20
4-2. Printed Wiring Board - MAIN Board -........................... 22
4-3. Schematic Diagram - MAIN Board (1/7) -..................... 23
4-4. Schematic Diagram - MAIN Board (2/7) -..................... 24
4-5. Schematic Diagram - MAIN Board (3/7) -..................... 25
4-6. Schematic Diagram - MAIN Board (4/7) -..................... 26
4-7. Schematic Diagram - MAIN Board (5/7) -..................... 27
4-8. Schematic Diagram - MAIN Board (6/7) -..................... 28
4-9. Schematic Diagram - MAIN Board (7/7) -..................... 29
4-10. Printed Wiring Board - CONTROL Board -................... 30
TABLE OF CONTENTS
4-11. Schematic Diagram - CONTROL Board -...................... 31
4-12. Printed Wiring Board - FLASH LED Board - ................ 32
4-13. Schematic Diagram - FLASH LED Board -................... 32
4-14. Printed Wiring Board - NFC Board -.............................. 33
4-15. Schematic Diagram - NFC Board -................................. 33
4-16. Printed Wiring Board
- SPEAKER LED (TOP) Board - ................................... 33
4-17. Schematic Diagram - SPEAKER LED (TOP) Board -... 33
4-18. Printed Wiring Board - TUBE LED LEFT Board -........ 34
4-19. Schematic Diagram - TUBE LED LEFT Board -........... 34
4-20. Printed Wiring Board - TUBE LED RIGHT Board - ..... 34
4-21. Schematic Diagram - TUBE LED RIGHT Board - ........ 34
4-22. Printed Wiring Board
- SPEAKER LED (BTM) Board - .................................. 35
4-23. Schematic Diagram
- SPEAKER LED (BTM) Board - .................................. 35
4-24. Printed Wiring Board - TUBE LED Board - .................. 35
4-25. Schematic Diagram - TUBE LED Board - ..................... 35
4-26. Schematic Diagram - POWER Board - .......................... 36
4-27. Printed Wiring Board - POWER Board -........................ 37
5. EXPLODED VIEWS
5-1. Overall Section ............................................................... 38
5-2. Side Panel Section .......................................................... 39
5-3. Cabinet Section ............................................................... 40
5-4. Board Section.................................................................. 41
5-5. Top Cover Section........................................................... 42
5-6. Front Panel Section......................................................... 43
6. ACCESSORIES ....................................................... 44

GTK-XB5
4
SECTION 1
SERVICING NOTES
The SERVICING NOTES contains important information for servicing. Be sure to read this section before repairing the unit.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free 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 flow)
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.
REPAIRING THE BOARDS
When each board installed in this unit is defective, replace the
mounted board.
Individual electrical parts that mounted on the each board cannot
be replaced.
Printed wiring board and schematic diagram that have been de-
scribed on this service manual are for reference.
NOTE OF REPLACING THE MAIN BOARD OR THE NFC
BOARD
When replacing the MAIN board or the NFC board, be sure to
replace the MAIN board and the NFC board simultaneously.
The MAIN board or the NFC board cannot replace with single.
Among the repair parts, the MAIN board and the NFC board are
supplied as one unit.
MODEL IDENTIFICATION
Distinguish by Part No. and destination code on the rear side of
the main unit.
– Rear view –
US, CND, RU, SP6, TW, AR, KR, LA
MODEL NUMBER LABEL
Part No.
Destination code
SONY®
AEP, UK, E4, E93
SONY®
Part No.
Destination code
AUS
SONY®
Part No.
Destination code
Part No.
Destination code
(LA) Part No.
Destination code
(US, CND, RU, SP6, TW, AR)
(KR)
Destination Part No. Destination
code
US, CND models (UC2) 4-597-924-0[] UC2
AEP, UK models (CEL, CEK) 4-597-925-0[] CEL/CEK
RU, SP6 models (RU1, SP6) 4-597-926-0[] RU1/SP6
E4, E93 models (E4, E93) 4-597-927-0[] E4/E93
AR model (AR2) 4-597-929-0[] AR2
LA model (LA9) 4-597-930-0[] LA9
KR model (KR2) 4-597-931-0[] KR2
AUS model (AU1) 4-687-946-0[] AU1
TW model (TW2) 4-694-105-0[] TW2
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
• Abbreviations
AR : Argentina model
AUS : Australian and New Zealand models
CND : Canadian and Puerto Rican models
E4 : Middle East area (Bahrain, Lebanon, Libya, Oman, Paki-
stan, Qatar, Syria, Yemen) and African area (Algeria, An-
gola, Egypt, Ethiopia, Morocco, Tunisia) models
E93 : Middle East area (Iraq, Kuwait, Saudi Arabia, UAE) and
African area (Kenya, Nigeria, Tanzania) models
LA : Latin America area (Except for Argentina, Puerto Rico) model
KR : Korean model
RU : Russian model
SP6 : Southeastern Asian area (Except for India,Thailand) model
TW : Taiwan model
Ver. 1.4

GTK-XB5
5
SECTION 2
DISASSEMBLY
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
SET
2-2. TOP COVER BLOCK
(Page 6)
2-6. RIGHT SIDE PANEL,
LEFT SIDE PANEL
(Page 10)
2-7. METAL CASE BLOCK
(Page 11)
2-8. BOTTOM COVER + PLATE
(Page 12)
2-9. FRONT PANEL BLOCK-1
(Page 13)
2-10. FRONT PANEL BLOCK-2
(Page 14)
2-12. TUBE LED RIGHT BOARD,
TUBE LED LEFT BOARD
(Page 16)
2-11. SPEAKER LED (TOP) BOARD,
FLASH LED BOARD
(Page 15)
2-4. POWER BOARD
(Page 8)
2-3. MAIN BOARD
(Page 7)
2-5. NFC BOARD,
CONTROL BOARD
(Page 9)
2-14. SPEAKER UNIT (TW) (SP3, SP4)
(Page 17)
2-13. SPEAKER LED (BTM) BOARD,
TUBE LED BOARD
(Page 16)
2-15. SPEAKER UNIT (WF) (SP1, SP2)
(Page 18)
JIG
When disassembling the unit, use the following
jig for speaker removal.
Part No. Description
J-2501-238-A JIG FOR SPEAKER REMOVAL

GTK-XB5
6
Note: Follow the disassembly procedure in the numerical order given.
2-2. TOP COVER BLOCK
7FFC cable
(16P MAIN BD-FV BD)
(XP16)
FFC cable
(16P MAIN BD-FV BD)
FFC cable
(16P MAIN BD-FV BD)
2rubber (circle)
6Lift up the top cover block
in the direction of the arrow.
8top cover block
top cover block
+RZWRLQVWDOOWKH))&FDEOH30$,1%')9%'
))&FDEOH30$,1%')9%'VHWWLQJ
+RZWRUHPRYHWKHUXEEHUFLUFOH
2rubber
(circle)
rubber (circle)
4two rubbers
(small circle)
3two handle rubbers
1two rubbers
(large circle)
front side
This side is
the terminal side.
XP16
MAIN board
Note 2: When installing the top cover block,
bend the FFC cable (16P MAIN BD-FV BD)
as shown in the figure below.
Note 1: When removing the rubber (circle),
insert a sharp-tipped object such as
tweezers into the cutout.
5three screws
(M3 u10)
5two screws
(M3 u10)
5two screws
(M3 u10)
tweezers, etc.
5two screws
(M3 u10)
5screw
(M3 u10)
5screw
(M3 u10)
–/HIWYLHZ–
BT board
Note 3: Be careful not to damage
the BT board.
–/HIWYLHZ–
rear side
front side

GTK-XB5
7
2-3. MAIN BOARD
4connector
(XP1)
3tweeter cable
connector (XP13)
2woofer cable
connector
(XP10)
1FFC cable
(9P MAIN BD-FA BD)
(XP17)
FFC cable
(9P MAIN BD-FA BD)
:LUHVHtting
3DVtingSRVitiRnRItKHUDGiDtiRnVKHHt
This side is the terminal side.
XP1 XP13 XP10 XP17
MAIN board
POWER
board
7 Remove the MAIN board
block in the direction of
the arrow.
hole
claw
left side
right side
front side
rear side
5two screws
(M3 u8)
6two screws
(M3 u6)
6two screws
(M3 u6)
9MAIN board
(See Note 1)
Note 4: When installing the MAIN board,
align the claw and hole.
BT board
Note 3: Be careful not to damage
the BT board.
Cover these lands. radiation sheet
–7RSYiHZ–
Note 2: When affixing the radiation sheet, affix it so that
the lands shown in the figure below are covered.
–0$,1ERDUGERttRPYiHZ–
front
side
8radiation
sheet
front
side
Note 1: When replacing the MAIN board, be sure to replace the
MAIN board and the NFC board simultaneously. The MAIN
board cannot replace with single. Among the repair parts, the
MAIN board and the NFC board are supplied as one unit.

GTK-XB5
8
2-4. POWER BOARD
1connector
(XP1)
4 Remove the POWER board
in the direction of the arrow.
hole
claw
2two screws
(M3 u8)
3two screws
(M3 u6)
3two screws
(M3 u6)
rear side left side
right side
5POWER board
Note 1: When installing the POWER board,
align the claw and hole.
BT board
Note 2: Be careful not to damage
the BT board.

GTK-XB5
9
2-5. NFC BOARD, CONTROL BOARD
filament tape
(sub material)
NFC board
CONTROL
board
2connector
(XP11)
front side
rear side
top side
front side
front side
CONTROL board
))&FDEOH30$,1%')9%'VHWWLQJ
FFC cable
(16P MAIN BD-FV BD)
hole
hole
boss
6connector
(XP8)
hole
5Draw the FFC cable
(16P MAIN BD-FV BD)
out from the hole.
8CONTROL board
7FFC cable
(16P MAIN BD-FV BD)
This side is
the terminal side.
1filament tape
(sub material)
top cover block
:LUHVHWWLQJ
boss
3six screws
(M3 u10)
4CONTROL board block
Note 2: When installing the CONTROL
board block, align the two bosses
and two holes.
–%RWWRPYLHZ–
5NFC board
(See Note 1)
3two
claws
4Peel the NFC board off
of the adhesive sheet.
Disassembly of
the NFC board. Disassembly of
the CONTROL board.
Note 1: When replacing the NFC board, be sure to replace the MAIN
board and the NFC board simultaneously. The NFC board
cannot replace with single. Among the repair parts, the MAIN
board and the NFC board are supplied as one unit.

GTK-XB5
10
2-6. RIGHT SIDE PANEL, LEFT SIDE PANEL
bond
4left side panel
Note 1: When installing the left side panel,
remove the used bond and use a new
bond to fix the left side panel.
1two rubbers
(circle)
3Remove the left side panel
in the direction of the arrow.
4right side panel
Note 1: When installing the right side panel,
remove the used bond and use a new
bond to fix the right side panel.
1rubber
(large circle)
1rubber
(large circle)
3Remove the right side panel
in the direction of the arrow.
bond
2two screws
(M4 u16)
2screw
(M4 u16)
2screw
(M4 u16)
2screw
(M4 u16)
2two screws
(M4 u16)
2two screws
(M4 u16)
2screw
(M4 u16)
front side
rear side
top side
BT board
Note 2: Be careful not to damage
the BT board.
+RZWRUHPRYHWKHUXEEHUFLUFOH
rubber (circle)
tweezers, etc.
–/HIWYLHZ–
Note 3: When removing the rubber (circle),
insert a sharp-tipped object such as
tweezers into the cutout.

GTK-XB5
11
2-7. METAL CASE BLOCK
3tweeter cable
connector (XP13)
2woofer cable
connector (XP10) 1FFC cable
(9P MAIN BD-FA BD)
(XP17)
4Remove two cables
from the hook.
hook
6metal case block
FFC cable
(9P MAIN BD-FA BD)
hook
:LUHVHtting
This side is the terminal side.
XP13 XP10 XP17
MAIN board
BT board
Note: Be careful not to damage
the BT board.
rear side left side
right side
front side
5five screws
(M4 u16)
–7RSYLHZ–

GTK-XB5
12
2-8. BOTTOM COVER + PLATE
1two handle rubbers
3two rubbers
(large circle)
3two rubbers
(large circle)
5Remove the bottom cover + plate
in the direction of the arrow.
bond
bond
6bottom cover + plate
Note 3: When installing the bottom cover + plate,
remove the used bond and use a new
bond to fix the bottom cover + plate.
four bosses
+RZWRUHPRYHWKHERWWRPFRYHUSODWH
Note 1: When removing the bottom cover + plate, move the bottom
cover + plate slowly and remove the bond as shown figure.
Note 2: When removing the bottom cover + plate, please remove
carefully so as not to damage the four bosses.
top side
bottom side
front side
2two screws
(M3 u10)
4two screws
(M4 u16)

GTK-XB5
13
2-9. FRONT PANEL BLOCK-1
• Continued on 2-10 (page 14).
2Align the front panel block and speaker
cabinet around the boss from the side,
insert a jig between them, and open a
gap of about 3 to 5 mm (perform at the
top, bottom, left, and right).
Note 1: When using a jig, please work carefully
so as not to damage the front panel
block and speaker cabinet.
total eight bosses
about
3 to 5 mm
boss
front panel block
bottom side
top side
bottom side
top side
1four screws
(M4 u16)
1two screws
(M4 u16) front panel block
speaker cabinet
rear side
– Top view –
– Bottom view –
4Insert a thick screwdriver into the bottom side
and widen the gap (perform at two places).
Note 2: Be careful because if a screwdriver is
inserted too far in, the speaker unit (WF)
may get damaged.
3Insert a thick screwdriver into the top side and
widen the gap (perform at two places).
Note 2: Be careful because if a screwdriver is
inserted too far in, the speaker unit (WF)
may get damaged.

GTK-XB5
14
2-10. FRONT PANEL BLOCK-2
3Remove the front
panel block in the
direction of the
arrow.
4front panel block
Note 3: When installing the front panel block
remove the used bond and use a new
bond to fix the front panel block.
bottom side
:LUHVHtting
woofer cable
speaker cabinet
front panel block
tweeter cable
FFC cable
FFC cable
–7RSYLHZ–
Note 4: When installing the front panel block,
be careful not to pinch the three cables.
tweeter cable
woofer cable
front panel block
speaker cabinet
2Insert a thick screwdriver into the right side
and widen the gap (perform at two places).
Note 2: Be careful because if a screwdriver is
inserted too far in, the speaker unit (WF)
may get damaged.
Note 1: Make sure to proceed with the top and bottom sides
first because the right and left sides may damage
the sides of the front panel block.
1Insert a thick screwdriver into the left side
and widen the gap (perform at two places).
Note 2: Be careful because if a screwdriver is
inserted too far in, the speaker unit (WF)
may get damaged.
left side
right side

GTK-XB5
15
2-11. SPEAKER LED (TOP) BOARD, FLASH LED BOARD
front panel block
front side
top side
2top panel bracket
9FFC cable
(9P MAIN BD-FA BD)
(XP18)
4TUBE LED LEFT board cable
connector (XP66)
3Remove the FLASH LED board block
in the direction of the arrow.
7connector
(XP61)
8SPEAKER LED (TOP) board
FFC cable
(9P MAIN BD-FA BD)
long
short
to XP18
))&FDEOH30$,1%')$%'VHWWLQJ
The opposite side is
the terminal side.
FLASH LED board
FLASH LED
board
top panel bracket
1three screws
(M3 u10)
5TUBE LED board cable
connector (XP67)
XP18
top side
bottom side
6TUBE LED RIGHT board cable
connector (XP65)
hole
hole
0FLASH LED board
Note: When installing the FLASH LED board,
align the two bosses and two holes.
boss
boss
top side
–5HDUYLHZ–

GTK-XB5
16
2-12. TUBE LED RIGHT BOARD, TUBE LED LEFT BOARD
2-13. SPEAKER LED (BTM) BOARD, TUBE LED BOARD
front panel block
front side
top side
2tube PCBA bracket (left)
3TUBE LED LEFT board
3TUBE LED RIGHT board
1screw
(M3 u10)
1screw
(M3 u10)
2tube PCBA bracket (right)
front panel block
2Remove the TUBE LED board block
in the direction of the arrow.
front side
bottom side
5SPEAKER LED (BTM) board
1two screws
(M3 u10)
3FLASH LED board cable
connector (XP68)
4connector
(XP60)
hole
hole
boss
boss
6TUBE LED board
Note: When installing the TUBE LED board,
align the two bosses and two holes.

GTK-XB5
17
2-14. SPEAKER UNIT (TW) (SP3, SP4)
front panel block
front side
two
grooves
boss
boss
bottom side
hole
3terminal
(narrow)
3terminal
(narrow)
yellow line
red line
4cable
(4P tweeter SP line)
cable
(4P tweeter SP line)
cable
(4P tweeter SP line)
3terminal
(wide)
3terminal
(wide)
SP3
front panel block
SP4
hole
groove
cable
[red line]
terminal
(wide)
cable
[yellow line]
top side
2two screws
(M3 u10)
2screw
(M3 u10)
2screw
(M3 u10)
top side
SP4
5speaker unit (TW) (SP4)
Note: When installing the speaker unit (TW),
align the boss and hole.
– Rear view –
1Remove the cable from
the two grooves.
5speaker unit (TW) (SP3)
Note: When installing the speaker unit (TW),
align the boss and hole.
groove
groove groove groove
cable
[yellow line]
cable
[red line]
Cable (4P tweeter SP line) setting
OK NG NG
cable
(4P tweeter SP line)
cable
(4P tweeter SP line)
– Sectional view – – Sectional view – – Sectional view –

GTK-XB5
18
2-15. SPEAKER UNIT (WF) (SP1, SP2)
:RRIHUFDEOHVHWWLQJ
:RRIHUFDEOHVHWWLQJ
3terminal
(wide)
3terminal
(narrow)
3terminal
(wide)
3terminal
(narrow)
4speaker unit (WF)
(SP2)
4speaker unit (WF)
(SP1)
2Pull out the speaker unit (WF)
in the direction of the arrow.
terminal (wide)
terminal (narrow)
SP2
front side
terminal (wide)
terminal (narrow)
SP1
front side
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Note 1: When installing the speaker unit (WF), make sure
that there is a position of the speaker terminal to
the position shown in the figure below.
–)URQWYLHZ–
terminals
position
top side
SP2
SP1
Note 2: When installing the woofer cable, make the
position of caulking of terminals is outside.
Note 2: When installing the woofer cable, make the
position of caulking of terminals is outside.
left side
right side
speaker cabinet
top side
top side
bottom side
woofer cable
[yellow line]
woofer cable
[red line]
1four screws
(M4 u16)
1four screws
(M4 u16)

GTK-XB5
GTK-XB5
1919
SECTION 3
TEST MODE
SOFTWARE VERSION
It can check the information of current software version.
Procedure:
1. Press the [1] button to turn the power on.
2. Press two buttons of the [FUNCTION] and [LIGHT] simulta-
neously for 5 seconds.
3. Each software version are shown by the blinking frequency of
LEDs simultaneously.
Example:
When the MCU version is “Ver.16”, the [1] LED blinks 1 time,
the [EXTRA BASS] LED blinks 6 times.
When the BT version is “Ver.1.12”, the [ADD L] LED blinks 1
time, the [ADD R] LED blinks 1 time, the [PARTY CHAIN] LED
blinks 2 times.
FACTORY RESET
It can reset all settings and clear the Bluetooth linked list. Execute
this mode when returning the this unit to the customer.
Procedure:
1. Press the [1] button to turn the power on.
2. Press two buttons of the [FUNCTION] and [−] simultaneously
for 5 seconds.
3. Three LEDs of the [1], [ ] and [AUDIO IN] blink for 3 sec-
onds, and then become the standby mode.

GTK-XB5
GTK-XB5
2020
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM
Audio IN
BT
BM63
BCLK0
LRCLK0
DSP
YSS952
NFC
MN63Y1212 NFC_INT
other
power
signal
crystal
01UCRYST
A-201
XI,XO
AD*2
Button*8
CP IC
MF133
7S3959
IIC2
IO*10 For Others
UART
crystal
24.576MHz
Audio
Processor
TAS5534
DATA2
PWM1
RESET¥&MFB
ADC
AK5358
01UKOKAD
A-101 DATA1
DATA0
IIC1
PWM*10 For RGB_LED*2
Flash LED*2 2
SPK LED*2
IO*8
MCLK1
BCLK1
LRCLK1
PWM2
BTL 100W*2(6ȍ) 30%
AMP IC
TAS5342A
WR
WL
MCU
STM32F070RB
DAC
AK4430
DATA3
Audio Out/Party Chain
For Front Board_LED*8{White*2(Audio&Party Chain)&Blue*1(BT)&Red*1(Bass),
Red+Green(Stanby),Green*2(ADD Spk)}
MCLK1
BCLK1
LRCLK1
TL
TR
LED Driver
LED6142GW
SPI3&PWMCLK