Sony WX-GT77UI / WX-GT78UI / WX-GT78UIM Service Manual ▷ View online
WX-GT77UI/GT78UI/GT78UIM
5
SECTION 2
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
• LOCATION OF CONTROLS
8
Location of controls and basic operations
Main unit
This section contains instructions on the location
of controls and basic operations. For details, see
the respective pages.
The corresponding buttons on the card remote
commander control the same functions as those
on the unit.
of controls and basic operations. For details, see
the respective pages.
The corresponding buttons on the card remote
commander control the same functions as those
on the unit.
" ALBM/PRESET +/– buttons
CD/USB (during MP3/WMA/AAC
playback):
To skip albums (press); skip albums
continuously (press and hold).
Radio:
To receive preset stations.
playback):
To skip albums (press); skip albums
continuously (press and hold).
Radio:
To receive preset stations.
# ;(eject) button
To eject the disc.
$ Control dial/select button
To adjust volume (rotate); select setup items
(press and rotate).
(press and rotate).
%
(BROWSE) button page 11
To enter the Quick-BrowZer mode.
& SOURCE (SRC) button
To power on; change the source (Radio/CD/
USB/AUX)*.
USB/AUX)*.
' MODE button page 12, 15, 16
Press to: Select the radio band (FM/AM)*/
select the play mode of iPod.
Press and hold to: Enter/cancel the passenger
control.
select the play mode of iPod.
Press and hold to: Enter/cancel the passenger
control.
PU
SH
DIAL SELEC
T
SRC
1
2
3
REP
4
SHUF
5
DM+
ZAP
6
PAUSE
MODE
OFF
RESET
AUX
EQ3
DSPL
SCRL
SCRL
K
E
E
S
K
E
E
S
ALBM/PRESET
BTM
SOURCE
ALBM/PRESET
RB RT
RG RH
RE
RI
R
RK
RL
RM
9
( DSPL (display)/SCRL (scroll) button
page 12, 13, 15
To change display items (press); scroll the
display item (press and hold).
To change display items (press); scroll the
display item (press and hold).
) Display window
* Disc slot
Insert the disc (label side up), playback
starts.
starts.
+ OFF button
To power off; stop the source.
, SEEK –/+ buttons
CD/USB:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
- AUX input jack page 19
To connect a portable audio device.
. Receptor for the card remote
commander
/
(BACK) button page 11
To return to the previous display.
0 RESET button page 6
1 ZAP button page 11
To enter ZAPPIN™ mode.
2 EQ3 (equalizer) button page 17
To select an equalizer type (XPLOD,
VOCAL, EDGE, CRUISE, SPACE,
GRAVITY, CUSTOM or OFF).
VOCAL, EDGE, CRUISE, SPACE,
GRAVITY, CUSTOM or OFF).
3 BTM button page 12
To start the BTM function (press and hold).
4 Number buttons
CD/USB:
: REP page 12, 14, 16
: SHUF page 12, 14, 16
: DM+
: REP page 12, 14, 16
: SHUF page 12, 14, 16
: DM+
Improves digitally compressed sound,
such as MP3.
To activate the DM+ function, set
“ON.” To cancel, set “OFF.”
such as MP3.
To activate the DM+ function, set
“ON.” To cancel, set “OFF.”
: PAUSE
To pause playback. To cancel, press
again.
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
To receive stored stations (press); store
stations (press and hold).
* In the case of a CD changer being connected; when
4063$&
is pressed, “CD” and the unit number will
appear in the display. Furthermore, if
appear in the display. Furthermore, if
.0%&
is
pressed, you can switch the changer.
10
Card remote commander
RM-X151
RM-X151
The following buttons on the card remote
commander have also different buttons/functions
from the unit. Remove the insulation film before
use (page 6).
commander have also different buttons/functions
from the unit. Remove the insulation film before
use (page 6).
X ()/
() buttons
To control CD/radio/USB, the same as
4&&, –/+ on the unit.
Setup, sound setting, etc., can be operated by
.
4&&, –/+ on the unit.
Setup, sound setting, etc., can be operated by
.
XB DSPL (display) button page 12, 13, 15
To change display items.
XT VOL (volume) +/– button
To adjust volume.
XE ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
again.
XG SEL (select) button
The same as the select button on the unit.
XH . (+)/N (–) buttons
To control CD/USB, the same as
"-#.13&4&5 +/– on the unit.
Setup, sound setting, etc., can be operated by
. N.
"-#.13&4&5 +/– on the unit.
Setup, sound setting, etc., can be operated by
. N.
XI SCRL (scroll) button
To scroll the display item.
XK Number buttons
To receive stored stations (press); store
stations (press and hold).
stations (press and hold).
Note
If the unit is turned off and the display disappears, it
cannot be operated with the card remote commander
unless
If the unit is turned off and the display disappears, it
cannot be operated with the card remote commander
unless
4063$&
on the unit is pressed, or a disc is
inserted to activate the unit first.
OFF
DSPL
SCRL
SEL
SOURCE
MODE
1
3
2
4
6
5
ATT
VOL
+
–
+
–
XG
X
XB
XE
XT
XK
XH
XI
WX-GT77UI/GT78UI/GT78UIM
6
• CONNECTIONS
L
R
FRONT
AUDIO OUT
REAR
AUDIO OUT
BUS
CONTROL IN
REMOTE
IN
REAR
AUDIO OUT
FRONT
BUS
IN
SUB OUT (MONO)
BUS AUDIO IN
AMP REM
Red
Yellow
ANT REM
Max. supply current 0.1 A
*
1
from car antenna (aerial)
Fuse (10 A)
Left
Right
White
White/black striped
Gray
Gray/black striped
Green
Green/black striped
Purple
Purple/black striped
Black
Blue
Blue/white striped
Max. supply current 0.3 A
Left
Right
*
3
*
1
RCA pin cord (not supplied)
*
2
Supplied with the CD changer
*
3
Insert with the cord upwards.
Orange/white striped
Light blue
ATT
ILLUMINATION
*
1
*
2
Connection diagram
To a metal surface of the car
First connect the black ground (earth) lead, then connect the
yellow, and red power supply leads.
yellow, and red power supply leads.
To the power antenna (aerial) control lead or
power supply lead of antenna (aerial) booster
Notes
• It is not necessary to connect this lead if there is no power
• It is not necessary to connect this lead if there is no power
antenna (aerial) or antenna (aerial) booster, or with a
manually-operated telescopic antenna (aerial).
manually-operated telescopic antenna (aerial).
• When your car has a built-in FM/AM antenna (aerial) in
the rear/side glass, see “Notes on the control and power
supply leads.”
supply leads.”
To AMP REMOTE IN of an optional power
amplifier
This connection is only for amplifiers. Connecting any other
system may damage the unit.
system may damage the unit.
To the interface cable of a car telephone
To a car’s illumination signal
To a car’s illumination signal
Be sure to connect the black ground (earth) lead to a metal
surface of the car first.
surface of the car first.
To the +12 V power terminal which is
energized in the accessory position of the
ignition key switch
ignition key switch
Notes
• If there is no accessory position, connect to the +12 V
• If there is no accessory position, connect to the +12 V
power (battery) terminal which is energized at all times.
Be sure to connect the black ground (earth) lead to a
metal surface of the car first.
• When your car has a built-in FM/AM antenna (aerial) in
the rear/side glass, see “Notes on the control and power
supply leads.”
supply leads.”
To the +12 V power terminal which is
energized at all times
Be sure to connect the black ground (earth) lead to a metal
surface of the car first.
surface of the car first.
Notes on the control and power supply leads
• The power antenna (aerial) control lead (blue) supplies +12 V
• The power antenna (aerial) control lead (blue) supplies +12 V
DC when you turn on the tuner.
• When your car has built-in FM/AM antenna (aerial) in the rear/
side glass, connect the power antenna (aerial) control lead
(blue) or the accessory power supply lead (red) to the power
terminal of the existing antenna (aerial) booster. For details,
consult your dealer.
(blue) or the accessory power supply lead (red) to the power
terminal of the existing antenna (aerial) booster. For details,
consult your dealer.
• A power antenna (aerial) without a relay box cannot be used
with this unit.
Memory hold connection
When the yellow power supply lead is connected, power will
always be supplied to the memory circuit even when the ignition
switch is turned off.
When the yellow power supply lead is connected, power will
always be supplied to the memory circuit even when the ignition
switch is turned off.
Notes on speaker connection
• Before connecting the speakers, turn the unit off.
• Use speakers with an impedance of 4 to 8 ohms, and with
• Before connecting the speakers, turn the unit off.
• Use speakers with an impedance of 4 to 8 ohms, and with
adequate power handling capacities to avoid its damage.
• Do not connect the speaker terminals to the car chassis, or
connect the terminals of the right speakers with those of the
left speaker.
left speaker.
• Do not connect the ground (earth) lead of this unit to the
negative (–) terminal of the speaker.
• Do not attempt to connect the speakers in parallel.
• Connect only passive speakers. Connecting active speakers
• Connect only passive speakers. Connecting active speakers
(with built-in amplifiers) to the speaker terminals may damage
the unit.
the unit.
• To avoid a malfunction, do not use the built-in speaker leads
installed in your car if the unit shares a common negative (–)
lead for the right and left speakers.
lead for the right and left speakers.
• Do not connect the unit’s speaker leads to each other.
Note on connection
If speaker and amplifier are not connected correctly, “FAILURE”
appears in the display. In this case, make sure the speaker and
amplifier are connected correctly.
If speaker and amplifier are not connected correctly, “FAILURE”
appears in the display. In this case, make sure the speaker and
amplifier are connected correctly.
WX-GT77UI/GT78UI/GT78UIM
7
screw
(shaft)
(shaft)
front panel assy
lever
cover (FPC)
wire (flat type)(17 core)
(CN1)
(CN1)
SECTION 3
DISASSEMBLY
•
This set can be disassembled in the order shown below.
3-1. FRONT
PANEL
ASSY
(Page
7)
3-2. SUB
PANEL
ASSY
(Page
8)
SET
3-3.
CD MECHANISM BLOCK
(Page
8)
3-4. MAIN
BOARD
(Page
9)
3-6.
CHASSIS (T) SUB ASSY
(Page
10)
3-7.
ROLLER ARM ASSY
(Page
10)
3-8. CHASSIS
(OP)
ASSY
(Page
11)
3-9.
CHUCKING ARM SUB ASSY
(Page
11)
3-10. SLED
MOTOR
ASSY
(Page
12)
3-11.
OPTICAL PICK-UP SECTION
(Page
13)
3-12. OPTICAL
PICK-UP
(Page
13)
3-5. SERVO
BOARD
(Page
9)
3-1. FRONT PANEL ASSY
Note: Follow the disassembly procedure in the numerical order shown below.
WX-GT77UI/GT78UI/GT78UIM
8
two screws
(+BTT 2.6
(+BTT 2.6
× 5)
CN202 (3P)
CN201
screw
(+PTT
2.6
× 6)
screw
(+PTT
2.6
× 6)
two screws
(+PTT
2.6
× 6)
bracket (CD)
CD mechanism block
3-3. CD MECHANISM BLOCK
3-2. SUB PANEL ASSY
claw
two lock screws
(2.6)
(2.6)
two lock screws
(2.6)
(2.6)
sub panel assy
screw
(+BTT
(+BTT
2.6
× 5)
screw
(+BTT
(+BTT
2.6
× 5)
wire (flat type)(18 core)
(CN2)
(CN2)
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