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Sony GTK-XB90 Service Manual
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Sony GTK-XB90 Service Manual

Home audio system
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2020/08/20 22:42:53 (GMT+09:00)
SERVICE MANUAL
Ver. 1.4 2020.08
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 aff ected unit was found during
service, contact your Service Headquarters.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(The United States model only)
Left/Right Channel:
With 4 ohms loads, both channels
driven at 1 kHz; rated 20 watts per
channel minimum RMS power, with
no more than 1% total harmonic
distortion from 250 milliwatts to
rated output.
Speaker section
Tweeter: 60 mm (2
Woofer: 180 mm (7
Inputs
AUDIO/PARTY CHAIN IN L/R:
Voltage 2 V, impedance 10 kilohms
MIC:
Sensitivity 1 mV, impedance
10 kilohms
Outputs
AUDIO/PARTY CHAIN OUT L/R:
Voltage 2 V, impedance 600 ohms
USB section and supported
audio formats
(USB) port:
Type A, maximum current 2.1 A
Supported bit rate:
MP3 (MPEG1 Audio Layer-3):
32 kbps
WMA: 32 kbps
Sampling frequencies:
MP3 (MPEG1 Audio Layer-3):
32/44.1/48 kHz
WMA: 44.1 kHz
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
9-896-414-05
2020H33-1
©
2020.08
BLUETOOTH section
Communication system:
BLUETOOTH Standard version 4.2
Output:
BLUETOOTH Standard Power Class 2
Maximum output power:
< 20.0 dBm
Maximum communication range:
Line of sight approx. 10 m (33 feet)
Frequency band:
2.4 GHz band (2.4000 GHz –
2.4835 GHz)
Modulation method:
FHSS (Freq Hopping Spread
in) × 3, cone type
Spectrum)
in) × 2, cone type
Compatible BLUETOOTH profiles
A2DP (Advanced Audio Distribution
Profile)
AVRCP (Audio Video Remote Control
Profile)
HFP (Hands-free Profile)
HSP (Headset Profile)
SPP (Serial Port Profile)
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 fields around a microwave oven,
static electricity, reception sensitivity,
antenna's performance, operating system,
software application, etc.
2)
BLUETOOTH standard profiles indicate the
purpose of BLUETOOTH communication
between devices.
320 kbps, VBR
NFC section
192 kbps, VBR
Maximum output power (Except RU):
< 60 dBμA/m at 10 m
Operating frequency:
13.56 MHz
Sony Home Entertainment &
Sound Products Inc.
GTK-XB90
SPECIFICATIONS
Lithium-ion battery section
Normal voltage: 21.6 V
Normal capacity: 2500 mAh, 54 Wh
Maximum charging current: 1 A
Maximum charging voltage:
24.9 Vdc
Usage life of the lithium-ion
1)
battery
When the Speaker Lights are turned off:
3.5 hours (at the maximum volume
level)
5 hours (at the maximum volume
2)
:
level with the STAMINA
mode turned on)
16 hours (at volume level 16)
When the Speaker Lights are turned on:
3 hours (at the maximum volume
level)
The times given above:
— were measured using a predetermined
music source.
— may vary depending on the playback
content.
— will be shortened if you charge and
discharge the battery repeatedly.
General
Power requirements:
North American model: AC 120 V,
60 Hz
Other models: AC 120 V
50/60 Hz
Power consumption:
60 W
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Standby power consumption:
When BLUETOOTH standby mode is
set to off: 0.5W (eco mode)
When BLUETOOTH standby mode is
set to on: 1.5 W (all wireless network
ports on)
Dimensions (W/H/D) (Approx.):
336 mm × 670 mm × 335 mm
13
in × 26
in × 13
Mass (Approx.):
14 kg (30 lb 14 oz)
Quantity of the system:
1 piece
Supplied accessories:
AC power cord (1)
AC plug adaptor* (1) (E4, SP, LA)
(supplied only for certain areas)
This plug adaptor is not for the use
in Chile, Paraguay and Uruguay. Use
this plug adaptor in the countries
where it is necessary.
(RU)
Условия хранения:
Товары сохраняют в упакованном
виде в темных, сухих, чистых,
хорошо вентилируемых
помещениях, изолированных от
мест хранения кислот и щелочей.
Температура хранения:
от -10°C до + 45°C
Относительная влажность
хранения: от 30% до 70%
Срок хранения не установлен.
Рабочая температура:
от 5°C до 35°C
Рабочая относительная
240 V,
влажность: от 30% до 70%
Design and specifications are subject to
change without notice.
HOME AUDIO SYSTEM
in)
SYS SET

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  • Page 1 Operating frequency: 32/44.1/48 kHz 13.56 MHz WMA: 44.1 kHz CAUTION HOME AUDIO SYSTEM Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type. 9-896-414-05 Sony Home Entertainment & 2020H33-1 Sound Products Inc. © 2020.08 SYS SET...
  • Page 2 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.

  • Page 3: Table Of Contents

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.1 TABLE OF CONTENTS SERVICING NOTES 5-7. Schematic Diagram - MAIN Board (4/8) - ..... 29 ..........5-8. Schematic Diagram - MAIN Board (5/8) - ..... 30 5-9. Schematic Diagram - MAIN Board (6/8) - ..... 31 DISASSEMBLY 5-10.

  • Page 4: Servicing Notes

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.2 SECTION 1 SERVICING NOTES The SERVICING NOTES contains important information for servicing. Be sure to read this section before repairing the unit. UNLEADED SOLDER DESTINATION ABBREVIATIONS Boards requiring use of unleaded solder are printed with the lead- The following abbreviations for model destinations are used in this free mark (LF) indicating the solder contains no lead.
  • Page 5 2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.4 NOTE OF REPLACING THE ELECTRICAL PARTS ON INITIALIZATION METHOD EACH BOARD FOR REPAIRING If the system still does not operate properly, restore it to the factory Among mounted electrical parts on each board, only parts that are default settings.

  • Page 6: Disassembly

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 SECTION 2 DISASSEMBLY • This set can be disassembled in the order shown below. 2-1. DISASSEMBLY FLOW 2-2. SIDE PANEL L (LEFT SIDE), LITHIUM ION BATTERY CONNECTOR (XP3) (Page 7) 2-3. LITHIUM ION BATTERY (Page 7) 2-4. SIDE PANEL R (RIGHT SIDE) (Page 8) 2-5.

  • Page 7: Side Panel L (Left Side), Lithium Ion Battery Connector (Xp3)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Note: Follow the disassembly procedure in the numerical order given. 2-2. SIDE PANEL L (LEFT SIDE), LITHIUM ION BATTERY CONNECTOR (XP3) top side 1 two rubbers (See Fig. A) front side MAIN board front side 2 two screws...

  • Page 8: Side Panel R (Right Side)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-4. SIDE PANEL R (RIGHT SIDE) 4 four claws 4 five claws 2 two screws 1 two foot pads top side 2 screw 1 foot pad 3 screw two bosses front side 3 four screws bosses 1 foot pad...

  • Page 9: Power Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-6. POWER BOARD 3 two screws 3 two screws hole 1 POWER board cable connector (XP20) 5 POWER board Note: When installing the POWER board, align the rib and hole. 4 Remove the POWER board in the direction of the arrow.

  • Page 10: Main Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.4 2-8. MAIN BOARD Note 1: The MAIN board for AEP, UK has been changed in the mid- way of production. Before replacing the defective MAIN board with the new MAIN board, be sure to refer to “CHANGE OF MAIN BOARD (AEP, UK only)”...

  • Page 11: Chassis Block

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-9. CHASSIS BLOCK 2 woofer cable connector (XP13) terminal side 3 FFC (TOP LED-MAIN) 1 tweeter cable (XP7) connector tting (XP11) 5 Draw the FFC tweeter cable out of the hook. (TOP LED-MAIN) woofer cable hook top side...

  • Page 12: Nfc Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-10. NFC BOARD Note 1: When replacing the NFC board, be sure to replace the BT board and the NFC board simultaneously. The NFC board 3 Gradually peel off the NFC board with cannot replace with single. a flathead screwdriver, etc.

  • Page 13: Key Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-12. KEY BOARD 4 five screws XP12 NFC board 4 three screws hole cushion 8 KEY board Note: When installing the KEY 4 screw KEY board board, align the two bosses and two holes. 4 screw front side...

  • Page 14: Bottom Panel Assy

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-14. BOTTOM PANEL ASSY Note 1: When removing the bottom panel assy, move the bottom panel assy slowly and remove the six bosses. (The six bosses are fixed with bond) Note 2: When removing the bottom panel assy, please remove carefully so as not to damage the six bosses.

  • Page 15: Front Panel Block-1

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-15. FRONT PANEL BLOCK-1 • Continued on 2-16 (page 16). front side 1 two screws 2 claw front panel block bottom side box unit 1 two screws – Side view – front panel block 2 claw top side...

  • Page 16: Front Panel Block-2

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-16. FRONT PANEL BLOCK-2 Note 1: Make sure to do this work after doing the work of 1 Insert a thick screwdriver into the left side “2-15. FRONT PANEL SECTION-1” on page 15. and widen the gap (perform at two places).

  • Page 17: Speaker Unit (Wf)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-17. SPEAKER UNIT (WF) Note 2: When installing the woofer cable, make the position of caulking of terminals is outside. top side top side terminal right side (wide) woofer cable [yellow line] front side speaker unit (WF) terminal (narrow)

  • Page 18: Top Speaker Board, Top Led Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-18. TOP SPEAKER BOARD, TOP LED BOARD top side boss 3 Remove the TOP LED board block in the direction of the arrow. front side boss 5 TOP LED board block Note: When installing the TOP LED board block, align the two bosses and two holes.

  • Page 19: Bottom Speaker Board, Bottom Led Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-19. BOTTOM SPEAKER BOARD, BOTTOM LED BOARD 1 Draw the LED board top side cable out of the two grooves. 4 LED board cable connector (XP16) front side boss boss 3 Remove the BOTTOM LED board bottom side hole block in the direction of the arrow.

  • Page 20: Speaker Unit (Tw), Front Panel Assy

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 2-20. SPEAKER UNIT (TW), FRONT PANEL ASSY top side groove groove 5 front panel assy top side three grooves – – front side 4 speaker unit (TW) (tweeter: right top) 3 terminal Pass the tweeter (wide) cable beside the 2 two screws speaker unit (TW).

  • Page 21: Test Mode

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.1 SECTION 3 SECTION 4 TEST MODE TROUBLESHOOTING Buttons and indicators position: SOFTWARE VERSION 1. Flowchart 4. Bond removal of diode (Ref. No. D9) It can confi rm the software version. Bond is applied to the diode (Ref. No. D9).

  • Page 22: Diagrams

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.3 SECTION 5 DIAGRAMS 5-1. BLOCK DIAGRAM - OVERALL Section - U571 U927 Audio Out&Party Chain AS9632 AK4430 From DATA4 IIC1 Audio IN 11.28MHz (MCLK) PCM1808 PWM1 DATA0 MCLK5 FLASH 8M BCLK5 24.576MHZ Audio 01U0FLASH - 202...

  • Page 23: Block Diagram - Power Supply Section

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.3 5-2. BLOCK DIAGRAM - POWER SUPPLY Section - For MCU&BT&NX3DV42GU&MF1337S3959&SGM803 For PCM1808*3&YSS952$AS9632 &TAS5538&74LVC244&AK4430 STB_3.3V &AM4KA340&KXCJK - 1013 DC-DC 3.3V_D1 TLV620 I/O*1 AP2305 1.8V_D From MCU For YSS952 SGM2032 For TAS5342A 3.3V_D2 For SPHE8107C&Flash I/O*1 AP2305 POWER Board...
  • Page 24 2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. • Circuit Boards Location (In addition to this, the necessary note is printed in each block.) For Printed Wiring Boards. For Schematic Diagrams. NFC board Note: Note:...

  • Page 25: Printed Wiring Board - Main Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-3. PRINTED WIRING BOARD - MAIN Board - • See page 24 for Circuit Boards Location. • : Uses unleaded solder. MAIN BOARD (COMPONENT SIDE) MAIN BOARD (CONDUCTOR SIDE) GTK-XB90 SYS SET...

  • Page 26: Schematic Diagram - Main Board (1/8)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-4. SCHEMATIC DIAGRAM - MAIN Board (1/8) - MAIN BOARD (1/8) R957 R957 NC/10K NC/10K XP20 XP20 POWER INPUT V_12V 7PIN/2.0mm 7PIN/2.0mm 0.1uF/50V/X7R 0.1uF/50V/X7R 0.1uF/50V/X7R 0.1uF/50V/X7R TPS54240 TPS54240 PW_MAIN TPS54240 TPS54240 USB_5V PW_MAIN 10uH 10uH 470pF/50V/X7R 470pF/50V/X7R 470pF/50V/X7R...

  • Page 27: Schematic Diagram - Main Board (2/8)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-5. SCHEMATIC DIAGRAM - MAIN Board (2/8) - MAIN BOARD (2/8) 1.2V_D Imax=140mA @ripple 50mV VDD12 FB17 FB17 500/800mA 500/800mA A_1V2 0.1UF 0.1UF 10uF/6.3V/X5R 10uF/6.3V/X5R PLL_VDD12 10uF/6.3V/X5R 10uF/6.3V/X5R 0.1UF 0.1UF MAX 190mA @ripple 50mV D_3V3 3.3V_D2 FB12 FB12...

  • Page 28: Schematic Diagram - Main Board (3/8)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-6. SCHEMATIC DIAGRAM - MAIN Board (3/8) - MAIN BOARD (3/8) KARAOKE V_12V R107 R107 0.1UF 0.1UF 0.1UF 0.1UF MIC DETECT 22uF/16V 22uF/16V 100uF/16V 100uF/16V R140 R140 3.3V_D1 R133 R133 330pF/16V/NP0 330pF/16V/NP0 C240 C240 C258 C258 R134 R134 0.1UF...

  • Page 29: Schematic Diagram - Main Board (4/8)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-7. SCHEMATIC DIAGRAM - MAIN Board (4/8) - MAIN BOARD (4/8) 5V_D2 R155 R155 G_SDA MCU_3.3V R153 R153 G_SCL FB29 FB29 70/3A 70/3A MCU_3.3V DSP_SDA DSP_SCL STB_3.3V MCU_3.3V FB45 FB45 70/3A 70/3A R113 R113 FB32 FB32 LED-SDA Close to MCU...

  • Page 30: Schematic Diagram - Main Board (5/8)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-8. SCHEMATIC DIAGRAM - MAIN Board (5/8) - MAIN BOARD (5/8) AUX IN ADC Audio IN C209 C189 C189 C209 0.1UF 0.1UF C172 C172 10uF/6.3V/X5R 10uF/6.3V/X5R 10uF/6.3V/X5R 10uF/6.3V/X5R 5V_D1 Audio In_L Audio In_L1 R177 R177 AUX_IN_L AUX_IN_R VREF...

  • Page 31: Schematic Diagram - Main Board (6/8)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-9. SCHEMATIC DIAGRAM - MAIN Board (6/8) - MAIN BOARD (6/8) 1.8V 3.3V 1.8V_D 3.3V_D1 C208 C208 C140 C140 C204 C204 C205 C205 C141 C141 C147 C147 C142 C142 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF...

  • Page 32: 5-10. Schematic Diagram - Main Board (7/8)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-10. SCHEMATIC DIAGRAM - MAIN Board (7/8) - MAIN BOARD (7/8) PW_MAIN R362 R362 CE31 CE31 CE30 CE30 R773 R773 220K 220K C291 C291 NC/820uF/50V NC/820uF/50V 470uF/50V 470uF/50V R775 R775 0.1uF/50V 0.1uF/50V C530 C530 220K 220K 10uF 10uF...

  • Page 33: Schematic Diagram - Main Board (8/8)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-11. SCHEMATIC DIAGRAM - MAIN Board (8/8) - MAIN BOARD (8/8) PW_MAIN C294 C294 Connector Circuit C277 C277 R273 R273 0.1uF 0.1uF C102 C102 AP9561GM AP9561GM 22uF/50V 22uF/50V AP9561GM AP9561GM C295 C295 0.1uF 0.1uF Battery Charging Circuit BAT_EN...

  • Page 34: Printed Wiring Board - Nfc Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-12. PRINTED WIRING BOARD - NFC Board - • See page 24 for Circuit Boards Location. 5-14. PRINTED WIRING BOARD - BT Board - • See page 24 for Circuit Boards Location. • : Uses unleaded solder. •...

  • Page 35: Schematic Diagram - Bt Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-15. SCHEMATIC DIAGRAM - BT Board - BT BOARD BT_BM63_Vina 0.1uF/16V/X7R 0.1uF/16V/X7R 10uF/10V/X7R 10uF/10V/X7R BAT_IN STB_3.3V BT_LRCK RFS0 BT_BCLK SCLK0 FB57 FB57 BT_LRCK BT_DATA ADAP_IN STB_3.3V AOHPR FB58 FB58 BT_BCLK BT_RX AOHPM AOHPL FB59 FB59 BT_DATA MIC_IN+ BT_TX...

  • Page 36: Printed Wiring Board - Key Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-16. PRINTED WIRING BOARD - KEY Board - • See page 24 for Circuit Boards Location. • : Uses unleaded solder. KEY BOARD (COMPONENT SIDE) KEY BOARD (CONDUCTOR SIDE) GTK-XB90 SYS SET...

  • Page 37: Schematic Diagram - Key Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-17. SCHEMATIC DIAGRAM - KEY Board - KEY BOARD To BT Board 500/800mA 500/800mA 10mm 10mm 7.5mm 7.5mm STB LED_5V JMP1 JMP1 JMP5 JMP5 PW_LED1 POWER_KEY PW_LED2 BT Blue_LED ADC_KEY11 Power Power ADC_KEY21 AUX WHITE_LED USB WHITE_LED WIRE JUMPER...

  • Page 38: Printed Wiring Board - Mic Knob Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-18. PRINTED WIRING BOARD - MIC KNOB Board - • See page 24 for Circuit Boards Location. 5-19. SCHEMATIC DIAGRAM - MIC KNOB Board - • : Uses unleaded solder. MIC KNOB BOARD MIC KONB BOARD (COMPONENT SIDE)

  • Page 39: Printed Wiring Board - Top Speaker Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-20. PRINTED WIRING BOARD - TOP SPEAKER Board - • See page 24 for Circuit Boards Location. 5-22. PRINTED WIRING BOARD - BOTTOM SPEAKER Board - • See page 24 for Circuit Boards Location. • : Uses unleaded solder.

  • Page 40: Printed Wiring Board - Top Led Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-24. PRINTED WIRING BOARD - TOP LED Board - • See page 24 for Circuit Boards Location. • : Uses unleaded solder. TOP LED BOARD (COMPONENT SIDE) TOP LED BOARD (CONDUCTOR SIDE) GTK-XB90 SYS SET...

  • Page 41: Schematic Diagram - Top Led Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-25. SCHEMATIC DIAGRAM - TOP LED Board - TOP LED BOARD 5V_D5 5V_D5 LED26 LED26 LED18 LED18 12_R R535 R535 R532 R532 BLUE GREEN BLUE GREEN R527 R527 5V_D5 PWM7_R CE10 CE10 PWM8_R PWM12_R C154 C154 To LED Board...

  • Page 42: Printed Wiring Board - Bottom Led Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-26. PRINTED WIRING BOARD - BOTTOM LED Board - • See page 24 for Circuit Boards Location. • : Uses unleaded solder. BOTTOM LED BOARD (COMPONENT SIDE) BOTTOM LED BOARD (CONDUCTOR SIDE) GTK-XB90 SYS SET...

  • Page 43: Schematic Diagram - Bottom Led Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-27. SCHEMATIC DIAGRAM - BOTTOM LED Board - BOTTOM LED BOARD 5V_D4 5V_D4 LED8 LED8 5V_D4 LED7 LED7 R524 R524 U16B U16B R315 R315 R512 R512 BLUE GREEN R511 R511 BLUE GREEN PWM1_R 4.7K 4.7K R70 100 R70 100...

  • Page 44: Schematic Diagram - Power Board

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-28. SCHEMATIC DIAGRAM - POWER Board - POWER BOARD R534 R534 R535 R535 CY503 CY503 470pF/250VAC 470pF/250VAC C508 C508 D505 D505 HER203 HER203 CY504 CY504 R523 R523 3.3/2W 3.3/2W 1000pF 1000pF 470pF/250VAC 470pF/250VAC NC/CE502 NC/CE502 C502 C502 CE501 CE501 0.0022uF(222)400V...

  • Page 45: Power Board (Us And Cnd Models)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-29. PRINTED WIRING BOARD - POWER Board (US and CND models) - • See page 24 for Circuit Boards Location. • : Uses unleaded solder. POWER BOARD (COMPONENT SIDE) POWER BOARD (CONDUCTOR SIDE) SYS SET...

  • Page 46: Power Board (Except Us And Cnd Models)

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 5-30. PRINTED WIRING BOARD - POWER Board (Except US and CND models) - • See page 24 for Circuit Boards Location. • : Uses unleaded solder. POWER BOARD (COMPONENT SIDE) POWER BOARD (CONDUCTOR SIDE) SYS SET...

  • Page 47: Exploded Views

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.2 SECTION 6 EXPLODED VIEWS Note: • -XX and -X mean standardized parts, so • The mechanical parts with no reference they may have some diff erence from the number in the exploded views are not sup- original one.

  • Page 48: Speaker Cabinet Section

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 6-2. SPEAKER CABINET SECTION board section not supplied front panel section Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 9-885-219-01 SCREW (M4X20) 9-885-219-66 SPEAKER UNIT (WF) (Woofer: Bottom) 9-885-219-02 SCREW (M3X10) 9-885-219-66 SPEAKER UNIT (WF) (Woofer: Top)

  • Page 49: Top Panel Section

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.2 6-3. TOP PANEL SECTION not supplied bottom side FFC2 FFC1 not supplied BT board rear side NFC board TOP1 front side top side Note: When replacing the BT board or the NFC board, be sure to re- place the BT board and the NFC board simultaneously.

  • Page 50: Board Section

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.4 6-4. BOARD SECTION not supplied not supplied (See Note) not supplied Note: The complete MAIN board (Ref No. 151) for AEP, UK has been changed in the midway of production. Before replacing the defective MAIN board with the new MAIN board, be sure to refer to “CHANGE OF MAIN BOARD (AEP, UK only)”...

  • Page 51: Front Panel Section

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 6-5. FRONT PANEL SECTION top side rear side front side not supplied FFC3 not supplied bottom side Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 9-885-219-02 SCREW (M3X10) 9-885-219-82 FRONT PANEL (CEL) ASSY 9-885-219-62...

  • Page 52: Electrical Parts List

    2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.4 SECTION 7 BOTTOM LED ELECTRICAL PARTS LIST BOTTOM SPEAKER BT + NFC • RESISTORS MAIN MIC KNOB The components identifi ed by mark 0 All resistors are in ohms. or dotted line with mark 0 are critical for...
  • Page 53 2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 Ver. 1.2 Ref. No. Part No. Description Remark 9-885-219-67 SPEAKER UNIT (TW) (Tweeter: Bottom) TOP1 9-885-219-83 TOP PANEL (ALL) ASSY (Including Microphone, Button, Lens Cushion) ************************************************************* ACCESSORIES ************ 4-697-227-11 MANUAL, INSTRUCTION (Operating Instructions) (ENGLISH, FRENCH, SPANISH) (US, CND)
  • Page 54 2020/08/20 22:42:53 (GMT+09:00) GTK-XB90 REVISION HISTORY Ver. Date Description of Revision 2017.07 2017.08 Addition of E4, E93, SP and LA models Addition of TROUBLESHOOTING (SMR-17025) 2017.10 Addition of AR and TH models Change of description and illustration in EXPLODED VIEWS for Ref. No. 1, 8 (SMR-17031) 2018.06...

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