Sony GTK-X1BT Service Manual ▷ View online
GTK-X1BT
21
2-12. LOUDSPEAKER (20 cm) (SP1, SP2)
Note:
It is possible to also remove ones of Lch and Rch.
terminal position
terminal position
loudspeaker (20 cm)
(SP1)
(SP1)
loudspeaker (20 cm)
(SP2)
(SP2)
4
loudspeaker (20 cm) (SP1)
8
loudspeaker (20 cm) (SP2)
6
Remove the loudspeaker (20 cm) (SP2)
in the direction of an arrow.
2
Remove the loudspeaker (20 cm) (SP1)
in the direction of an arrow.
7
terminal (red)
7
terminal (black)
3
terminal (black/white)
3
terminal (red/white)
/RXGVSHDNHUFPVHWWLQJ
–
7RSIURQWYLHZ–
5 six screws
((3.5
((3.5
u 20), tapping)
1 six screws
((3.5
((3.5
u 20), tapping)
GTK-X1BT
22
SECTION 3
TEST MODE
[PANEL TEST MODE]
This mode is used to check the liquid crystal display panel, LEDs,
keys, [MASTER VOLUME] jog, model, destination and software
version.
Procedure:
1. Press [BASS BAZUCA] button and [TUNING +] button si-
This mode is used to check the liquid crystal display panel, LEDs,
keys, [MASTER VOLUME] jog, model, destination and software
version.
Procedure:
1. Press [BASS BAZUCA] button and [TUNING +] button si-
multaneously and hold 3 seconds.
2. All LEDs and segments in liquid crystal display panel are
lighted up.
3. When
[] button is pressed after all LEDs and segments in
liquid crystal display panel light up, alternate segments in liq-
uid crystal display panel and LEDs would light up. If you press
[] button again, another half of alternate segments in liquid
crystal display panel and LEDs would light up. Pressing []
button again would cause all segments in liquid crystal dis-
play panel and LEDs (except Speaker LED – light up BLUE)
light up. Liquid crystal display panel will light up 8 character
UNION JACK display and all LEDs are OFF if [] is pressed
again.
uid crystal display panel and LEDs would light up. If you press
[] button again, another half of alternate segments in liquid
crystal display panel and LEDs would light up. Pressing []
button again would cause all segments in liquid crystal dis-
play panel and LEDs (except Speaker LED – light up BLUE)
light up. Liquid crystal display panel will light up 8 character
UNION JACK display and all LEDs are OFF if [] is pressed
again.
4. When you want to enter to the software version display mode,
press [+] button. The model information appears on the liq-
uid crystal display panel.
uid crystal display panel.
Press
[+] button again to view the destination information.
(Displayed characters/values in the following fi gure are example)
5. During the destination information display, press [+] button.
Each time [+] button is pressed, the liquid crystal display
panel shows the version of each category software in the fol-
lowing sequence: SC, UI, PF, SYS, M1, M2, I1, I2, ST, TA,
TAS, TM, BTM, BT, NFC and return back to model informa-
tion display.
panel shows the version of each category software in the fol-
lowing sequence: SC, UI, PF, SYS, M1, M2, I1, I2, ST, TA,
TAS, TM, BTM, BT, NFC and return back to model informa-
tion display.
(Displayed characters/values in the following fi gure are ex-
ample)
ample)
SC version
Press the [
+]
button.
Version date
Screen display
6. When [FUNCTION] button is pressed while the version num-
bers are being displayed except model and destination, the date
of the software creation appears. When [FUNCTION] button
is pressed again, the display returns to the software version
display.
of the software creation appears. When [FUNCTION] button
is pressed again, the display returns to the software version
display.
7. Press
[-] button, the key check mode is activated.
8. In the key check mode, the liquid crystal display panel displays
“K 0 V0”.
Each time a button is pressed, “K” value increases. However,
once a button has been pressed, it is no longer taken into ac-
count.
once a button has been pressed, it is no longer taken into ac-
count.
“V” value increases in the manner of 0, 1, 2, 3 ... if [MASTER
VOLUME] knob is turned clockwise, or it decreases in the
manner of 0, 9, 8, 7 ... if [MASTER VOLUME] knob is turned
counterclockwise.
VOLUME] knob is turned clockwise, or it decreases in the
manner of 0, 9, 8, 7 ... if [MASTER VOLUME] knob is turned
counterclockwise.
9. To release from this mode, press two buttons in the same man-
ner as step 1, or disconnect the power cord.
[COLD RESET]
The cold reset clears all data including preset data stored in the
data fl ash to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press [TUNING +] button and ['/1] button simultaneously
The cold reset clears all data including preset data stored in the
data fl ash to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press [TUNING +] button and ['/1] button simultaneously
for 3 seconds.
2. “COLD RST” appears on the liquid crystal display panel. Af-
ter that, the liquid crystal display panel becomes blank for a
while, and the system is reset.
while, and the system is reset.
Model name
Displayed by turns.
Destination
Screen display
X
CE2
GTK-X1BT
23
[HISTORY MODE]
This mode is used to check important data stored in the system
when PROTECTOR happen.
Procedure:
1. During demo mode, press [LED SPEAKER] button and [u]
This mode is used to check important data stored in the system
when PROTECTOR happen.
Procedure:
1. During demo mode, press [LED SPEAKER] button and [u]
for 5 seconds to mode in to history mode.
2. Press the [TUNING +/M >] or [TUNING -/m .]
button to check history data stored.
Item
Display
Protector Count
P C O U N
T
Protector Type (refer protector
kind test mode)
kind test mode)
Protector type
Protector
Error Code
Error Code
AMPL
E01
PWR1
E02
PWR2
E03
P
T
Single Power On Time
1 *h *h *h *h *h *m *m
Total Power On Time
2 *h *h *h *h *h *m *m
Input Function
F
Volume
V O
L
Actual Attenuation
A
T
T
Low EQ Level
L O W
Mid EQ Level
M
I
D
High EQ Level
H
I
G H
VACS Level
V
A C S
AP VACS Level
A P V
A C S
Surround Setting
S U R R
DJ Effect Setting
D
J
Bass Bazuca Setting
B
A S
S
Vertical Sound Setting
V
E R
T
PARTY CHAIN
P
C H
• To release from History Mode.
To release from this mode, press ['/1] button.
[PROTECTOR TEST DISPLAY TEST MODE]
This mode is used to check types of protect occurred during pro-
tector on.
Procedure:
1. During protection on, liquid crystal display panel shows blink-
This mode is used to check types of protect occurred during pro-
tector on.
Procedure:
1. During protection on, liquid crystal display panel shows blink-
ing message “PROTECT EXX”.
“EXX” – represent the error code.
2. Press [FUNCTION] button and [u] button simultaneously.
3. Liquid crystal display panel display will toggle between
3. Liquid crystal display panel display will toggle between
“PROTECT” message & protector kind message display.
Bellow table explains on protector kind.
Bellow table explains on protector kind.
Error Code
Protector Message Description
E01
“AMP”
Defect of AMP circuit
E02
“PWR SUP1”
Defect of power supply
circuit to AMP
circuit to AMP
E03
“PWR SUP2”
Defect of USB port or
iPod/iPhone connector.
iPod/iPhone connector.
• To release from this mode.
Press [FUNCTION] button and [u] button simultane-
ously again or unplug and re-plug in the power cord.
ously again or unplug and re-plug in the power cord.
1. Defect of AMP circuit
1-1. If PROTECT mode is “AMP”,
1-1. If PROTECT mode is “AMP”,
The following defect might be possible.
Defects
Possible cause
OTP (Over Temperature
Protection)
Protection)
Unusual heat up of AMP IC
by improper assembly of
heatsink, etc..
by improper assembly of
heatsink, etc..
OCP (Over Current
Protection)
Protection)
The overcurrent condition to
DAMP IC occurs by defect
of DAMP IC or defect of PS
output line.
DAMP IC occurs by defect
of DAMP IC or defect of PS
output line.
DC Detection
DC appears in SP terminal by
defect of AMP IC or output is
short-circuit.
defect of AMP IC or output is
short-circuit.
1-2. If speaker does not have output even if the set
status is not in PROTECT mode
The following defect might be possible.
Defects
Possible cause
Under Voltage
IC701 output is below 12V.
RESET defect
Reset signal status from micon
is not 'H' .
is not 'H' .
2. Defect of power supply circuit to AMP
2-1. If the PROTECT mode is “PWR SUP1”,
2-1. If the PROTECT mode is “PWR SUP1”,
There is possibility of unusual power supply of any of the
AMP IC, IC812 (6V regulator from SMPS supply) or fan is
blocked.
AMP IC, IC812 (6V regulator from SMPS supply) or fan is
blocked.
3. Defect of iPod/iPhone connector or USB port
3-1. If the PROTECT mode is “PWR SUP2”,
3-1. If the PROTECT mode is “PWR SUP2”,
There is possibility of the USB port or iPod/iPhone connector
is short-circuited.
is short-circuited.
• To release from this mode.
Press [FUNCTION] button and [u] button simultaneously
again or unplug and re-plug in the power cord.
again or unplug and re-plug in the power cord.
Ver. 1.1
GTK-X1BT
24
FM TUNER LEVEL CHECK
unit
signal
generator
Procedure :
1. Turn the power on.
2. Input the following signal from Signal Generator to FM an-
1. Turn the power on.
2. Input the following signal from Signal Generator to FM an-
tenna input directly.
Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation
Deviation
: 75 kHz
Modulation
: 1 kHz
ANT input
: 35 dBu (EMF)
Note: Use 75 ohm coaxial cable to connect signal generator and the unit.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C signals.
When the selected station signal is received in good condition,
“TUNED” is displayed.
SECTION 4
ELECTRICAL CHECK
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