Sony WX-GT77UI - Radio / CD User manual

SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
General
Output:
Audio outputs terminal (front/rear)
Subwoofer output terminal (mono)
Power antenna (aerial) relay control terminal
Power amplifier control terminal
Inputs:
Remote controller input terminal
Antenna (aerial) input terminal
Telephone ATT control terminal
Illumination control terminal
BUS control input terminal
BUS audio input terminal
AUX input jack (stereo mini jack)
USB signal input terminal
WX-GT77UI/GT78UI/
GT78UIM
FM/AM 2DIN COMPACT DISC PLAYER
9-889-412-01
2009A04-1
© 2009.01
US Model
WX-GT77UI
E Model
WX-GT78UI
Indian Model
WX-GT77UI/GT78UIM
Saudi Arabia Model
WX-GT77UI
Ver. 1.0 2009.01
SPECIFICATIONS
CD Player section
Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and flutter: Below measurable limit
Tuner section
FM
Tuning range:
Except US model:
87.5 – 108.0 MHz
US model:
87.5 – 107.9 MHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 150 kHz
Usable sensitivity: 10 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 70 dB (mono)
Separation: 40 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
AM
Tuning range:
Except US model:
531 – 1,602 kHz
US model:
530 – 1,710 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 25 kHz
Sensitivity: 26 μV
USB Player section
Interface: USB (Full-speed)
Maximum current: 500mA
Power amplifier section
Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W × 4 (at 4 ohms)
Model Name Using Similar Mechanism CDX-M60UI/MR60UI
CD Drive Mechanism Type MG-101Z-188//Q
Optical Pick-up Name DAX-25A
• The tuner and CD sections have no adjustments.
AUDIO POWER SPECIFICATIONS
(US model)
CEA2006 Standard
Power Output: 17 Watts RMS × 4 at
4 Ohms <1 % THD + N
SN Ratio: 82 dBA
(reference: 1 Watt into 4 Ohms)
Photo: WX-GT78UI
– Continued on next page –

WX-GT77UI/GT78UI/GT78UIM
2
NOTES ON CHIP COMPONENT REPLACEMENT
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
TEST DISCS
Please use the following test discs for the check on the CD section.
YDES-18 (Part No. 3-702-101-01)
PATD-012 (Part No. 4-225-203-01)
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostat-
ic break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radia-
tion exposure.
If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fixed resistor located at the side of optical
pick-up block.
optical pick-up
semi-fixed resistor
Tone controls:
Low: ±10 dB at 60 Hz (XPLOD)
Mid: ±10 dB at 1 kHz (XPLOD)
High: ±10 dB at 10 kHz (XPLOD)
Power requirements: 12 V DC boat battery
(negative ground (earth))
Dimensions: Approx. 178 × 100 × 185 mm
(7 1/8× 4 × 7 3/8in.) (w/h/d)
Mounting dimensions: Approx. 178 × 100 × 163 mm
(7 1/8× 4 × 6 1/2in.) (w/h/d)
Mass: Approx. 1.9 kg (2 lb 4 oz.)
Supplied accessories:
Card remote commander: RM-X151
Parts for installation and connections (1 set)
Design and specifications are subject to change
without notice.
SAFETY-RELATED COMPONET 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.

WX-GT77UI/GT78UI/GT78UIM
3
Type of disc Label on the disc
CD-DA
MP3
WMA
AAC
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.
• CD Play back
This unit can play CD-DA (also containing CD TEXT) and
CD-R/CD-RW (MP3/WMA/AAC files).
This compact disc player is classified as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.
EXCEPT US MODEL:
This label is located on the bottom of the chassis.
1. SERVICE NOTES................................................... 4
2. GENERAL
Location of Controls....................................................... 5
Connections .................................................................... 6
3. DISASSEMBLY
3-1. Front Panel Assy ............................................................ 7
3-2. Sub Panel Assy ............................................................... 8
3-3. CD Mechanism Block..................................................... 8
3-4. Main Board..................................................................... 9
3-5. Servo Board .................................................................... 9
3-6. Chassis (T) Sub Assy...................................................... 10
3-7. Roller Arm Assy.............................................................. 10
3-8. Chassis (OP) Assy........................................................... 11
3-9. Chucking Arm Sub Assy................................................. 11
3-10. Sled Motor Assy.............................................................. 12
3-11. Optical Pick-up Section.................................................. 13
3-12. Optical Pick-up............................................................... 13
4. DIAGRAMS
4-1. Block Diagram –Main Section– ..................................... 15
4-2. Block Diagram –Display Section– ................................. 16
4-3. Printed Wiring Board –Main Section–............................ 18
4-4. Schematic Diagram –Main Section (1/3)–...................... 19
4-5. Schematic Diagram –Main Section (2/3)–...................... 20
4-6. Schematic Diagram –Main Section (3/3)–...................... 21
4-7. Printed Wiring Board –Sub Section–.............................. 22
4-8. Schematic Diagram –Sub Section–................................. 23
4-9. Printed Wiring Board –Key Section (1/2)–..................... 24
4-10. Printed Wiring Board –Key Section (2/2)–..................... 25
4-11. Schematic Diagram –Key Section–................................ 26
5. EXPLODED VIEWS
5-1. Sub Panel Section ........................................................... 33
5-2. Front Panel Section......................................................... 34
5-3. Main Board Section........................................................ 35
5-4. CD Mechanism Section (MG-101Z-188//Q).................. 36
6. ELECTRICAL PARTS LIST .............................. 37
TABLE OF CONTENTS

WX-GT77UI/GT78UI/GT78UIM
4
SECTION 1
SERVICE NOTES
EXTENSION CABLE AND SERVICE POSITION
When repairing or servicing this set, connect the jig (extension
cable) as shown below.
• Connect the MAIN board (CN201) and the SERVO board
(CN401) with the extension cable (Part No. J-2502-076-1).
NOTE FOR REPLACEMENT OF THE SERVO BOARD
When repairing, the complete SERVO board (Part No. A-1554-
409-A) should be replaced since any parts in the SERVO board
cannot be repaired.
SERVO BOARD
CN401
J-2502-076-1
MAIN BOARD
CN201

WX-GT77UI/GT78UI/GT78UIM
5
SECTION 2
GENERAL This section is extracted
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.
"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.
#;(eject) button
To eject the disc.
$Control dial/select button
To adjust volume (rotate); select setup items
(press and rotate).
%(BROWSE) button page 11
To enter the Quick-BrowZer mode.
&SOURCE (SRC) button
To power on; change the source (Radio/CD/
USB/AUX)*.
'MODE button page 12, 15, 16
Press to: Select the radio band (FM/AM)*/
select the play mode of iPod.
Press and hold to: Enter/cancel the passenger
control.
P
U
S
H
D
I
A
L
S
E
L
E
C
T
SRC
1
2
3
REP
4
SHUF
5
DM+
ZAP
6
PAU S E
MODE
OFF
RESET
AUX
EQ3
DSPL
SCRL
KEESKEES
A
L
B
M
/
P
R
E
S
E
T
BTM
SOURCE
A
L
B
M
/
P
R
E
S
E
T

RB RT RG RHRE RI
R 
R
K
R
L
R
M
9
(DSPL (display)/SCRL (scroll) button
page 12, 13, 15
To change display items (press); scroll the
display item (press and hold).
)Display window
*Disc slot
Insert the disc (label side up), playback
starts.
+OFF button
To power off; stop the source.
,SEEK –/+ buttons
CD/USB:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
-AUX input jack page 19
To connect a portable audio device.
.Receptor for the card remote
commander
/(BACK) button page 11
To return to the previous display.
0RESET button page 6
1ZAP button page 11
To enter ZAPPIN™ mode.
2EQ3 (equalizer) button page 17
To select an equalizer type (XPLOD,
VOCAL, EDGE, CRUISE, SPACE,
GRAVITY, CUSTOM or OFF).
3BTM button page 12
To start the BTM function (press and hold).
4Number buttons
CD/USB:
:REP page 12, 14, 16
:SHUF page 12, 14, 16
:DM+
Improves digitally compressed sound,
such as MP3.
To activate the DM+ function, set
“ON.” To cancel, set “OFF.”
:PAU S E
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
*In the case of a CD changer being connected; when
4063$& is pressed, “CD” and the unit number will
appear in the display. Furthermore, if .0%& is
pressed, you can switch the changer.
10
Card remote commander
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).
X ()/() buttons
To control CD/radio/USB, the same as
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.
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.
XI SCRL (scroll) button
To scroll the display item.
XK Number buttons
To receive stored stations (press); store
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 4063$& on the unit is pressed, or a disc is
inserted to activate the unit first.
OFF
DSPL SCRL
SEL SOURCE MODE
132
465
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)
*2Supplied with the CD changer
*3Insert 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.
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
antenna (aerial) or antenna (aerial) booster, or with a
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.”
To AMP REMOTE IN of an optional power
amplifier
This connection is only for amplifiers. Connecting any other
system may damage the unit.
To the interface cable of a car telephone
To a car’s illumination signal
Be sure to connect the black ground (earth) lead to a metal
surface of the car first.
To the +12 V power terminal which is
energized in the accessory position of the
ignition key switch
Notes
•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.”
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.
Notes on the control and power supply leads
•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.
•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.
Notes on speaker connection
•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.
•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
(with built-in amplifiers) to the speaker terminals may damage
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.
•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.

WX-GT77UI/GT78UI/GT78UIM
7
screw
(shaft)
front panel assy
lever


cover (FPC)
wire (flat type)(17 core)
(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 × 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)
two lock screws
(2.6)
sub panel assy
screw
(+BTT 2.6 × 5)
screw
(+BTT 2.6 × 5)
wire (flat type)(18 core)
(CN2)


WX-GT77UI/GT78UI/GT78UIM
9
3-4. MAIN BOARD
3-5. SERVO BOARD
RIMAIN board
insulating sheet

two
screws
(+PTT 2.6
× 8)
 screw
(+PTT 2.6 × 8)
 screw
(+PTT 2.6 × 8)
three ground point screws
(+PTT 2.6 × 6)
RHheat sink
CN203 (5P)
CN901 (3P)
connection cord (RCA)
connection cord (USB)
RB two screws
(+P 2.6 ×8)
RT two screws
(+PTT 2.6 ×10)
RE two screws
(+PTT 2.6 ×8)
RG screw
(+PTT 2.6 ×10)
screw
(+PTT 2.6 ×10)
SERVO board
SERVO board
toothed lock screw
(M 1.7 ×2.5)
toothed lock screw
(M 1.7 ×2.5)
Remove the eleven solders.
GRY
YEL
BLU
ORG
RED
BLK
RED
WHT
BLK
RED
WHT
claw
claw optical pick-up (16 core)
(CN101)

WX-GT77UI/GT78UI/GT78UIM
10
3-6. CHASSIS (T) SUB ASSY
3-7. ROLLER ARM ASSY
chassis (T) sub assy
claw
two screws
(M 1.7 ×2.5)
two screws
(M 1.7 ×2.5)
washer
gear (RA1)
roller arm assy

spring (RAL)
spring (RAR)

WX-GT77UI/GT78UI/GT78UIM
11
3-8. CHASSIS (OP) ASSY
3-9. CHUCKING ARM SUB ASSY
two coil springs (damper) (natural)
coil spring (damper) (green)
chassis (OP) assy

 tension spring (KF)
gear (LE1)
lever (D)
slider (R)
chucking arm sub assy

spring
Note: Have this portion receive the chassis. Note: Have this portion receive the chassis.
Note: Be careful not to touch the turn table.

WX-GT77UI/GT78UI/GT78UIM
12
3-10. SLED MOTOR ASSY
sled motor assy
sled motor assy
spring
spring
stand
stand
turn table
three serration screws
(M 2 ×3)
three serration screws
(M 2 ×3)
Note: Place the stand with care not to touch the turn table.
Note:
Never remove these parts since they were adjusted.
Note for Assembly
Note: Take care to prevent the chassis from being bent
when tightening the three machine screws.

WX-GT77UI/GT78UI/GT78UIM
13
3-11. OPTICAL PICK-UP SECTION
3-12. OPTICAL PICK-UP

optical pick-up section
Note: Be careful not to touch the lens and hologram
terminal when removing the optical pick-up section.
tapping screw
(P 1.4)
leaf spring (OPS)
rack
optical pick-up lead screw assy

WX-GT77UI/GT78UI/GT78UIM
14
MEMO

WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
1515
20
22
11
12
28
8
17
18
3
25
7
19
27
13
24
4
AU_LCH
AU_RCH
TXD(MC-BUS)
RXD(MC-BUS)
WAKE UP
Z_MUTE
CD_ON
CDM_ON
SYS_RST
EJECT_OK
VBUS ON
AU ATT
BU CHECK
MECHA 8.5V
A+3.3V
BU_+3.3V
DR_+6V
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
AUDIO +8.5V
BU_+3.3V
SERVO+3.3V
R-CH
R-CH
7AUX-L
9AUX-R
MC RX
59 MC TX
60 WAKE UP
58 Z-MUTE
62 CD_ON
30 CDM_ON
31 EJECT OK
70
RESET
54 SYSRST
29 V-BUS ON
BU +3.3V
88 CLK
61 MD2
51 MD0
53 FLASH EN1
78
VOUT
1VIN 2
15
D201
4FMIN1
3FMIN2 3TU-L
8AUX GND
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
PHASE LOCKED LOOP
(PLL)
IC001
L6
FM MIX
L2
CN201
CD
MECHANISM
UNIT
(MG-101Z)
(1/2)
I2C BUS CONTROLLED
POWER AMP/MULTIPLE
VOLTAGE REGULATOR
IC301
SYSTEM CONTROL
IC501 (1/2)
RESET
IC303
CN701
4TU-R
5CD-L
6CD-R
R-CH (FRONT)
R-CH (REAR)
BATT
R-CH
8
9
18
SCL 19
SDA
14
RSSI 37 VSM
16 XTAL1
15 XTAL2
LOUT
ROUT
JAC1
L
R
-1
-2
AUX
J901 (1/2)
X1
4MHz
BUS
AUDIO IN
S22
RESET
5
3
OUT-FL+
OUT-FL–
9
7
OUT-RL+
OUT-RL–
27
R-CH
ANT-REM
35
VP BATT
20
VP1 6
VP2
30
AUDIO+B 31
33
SERVO+3.3V
MECHA+6V 34
PANEL+B
34
32
OUT-FR
27
SACLK 28
SADA 29
SAOUT
OUT-RR
R-CH
31
OUT-SL
13
ZAP BEEP 16
ZAP BEEP
4I2C SCK
AUDIO +8.5V
SERVO+3.3V
MECHA+6V
PANEL+B
2I2C SIO
16 BEEP
22 STB
25 DIAG
7
10
12
11
16
1
9
2
4
3
6
37
38
I2C SCK
I2C SIO
I2C-SCK
I2C-SIO
I2C-SCK
I2C-SIO
I2C-SCK
I2C-SIO
I2C-SCK
I2C-SIO
23
I2C_SCK 72
SACLK 71
SAOUT 38
SAIN
22
I2C_SIO
27
ATT
75
CD MUTE
98
ZAPPING BEEP
97
BEEP 68
AMPSTB 69
DIAG
83
BU CHECK
12 IN-FL
FL+
FL–
L
R
RL+
RL–
FR+
FR–
RR+
RR–
ANT-REM
BATT
ACC
35
OUT-FL
11 IN-RL
33
OUT-RL
MUTE
Q905
MUTE DRIVE
Q906,907
13 RST
12 BUS IN
11 CLK IN
10 BU CHECK
9DATA IN
8DATA OUT
25
ACC IN ACC DETECT
Q703
+3.3V REG
IC302
MUTE
Q903
29
AMP-REM 5AMP-REM
14 ILL
63
ILL IN ILL DETECT
Q702
13 TEL-ATT
26
TEL ATT TEL-ATT DETECT
Q701
1AMRFIN
REAR
BUS INTERFACE
IC601
D901
D202
D502
FU601
28
BUS ON
37
BU+B B.U+5V
FRONT
R-CH
L
J901 (2/2)
R
-3
-4
-5
-6
AUDIO
OUT
MUTE
Q901
BU+3.3V
BATT
2BUS-R
1BUS-L
3
BATT
CLK
RST
DATA I/O
BUS ON
5
68
42
3
1
4
1
2
23
BATT
J601
(BUS CONTROL IN)
TH601
7
6
BATTERY CHECK
Q601,D606,607
MECHA +6V
3.3V
6
NCO
3
F WRITE
7
CLK
2
RESET
RX
4
1
5TX
CN501
FLASH
PROGRAMMING
BU +3.3V
B.U +5V
20
UNI SCK
19
UNISO 18
UNISI
CD MUTE
Q201
SUB OUT
(MONO)
FLASH
PROGRAMMING
BUFFER
Q501-503
• Signal Path
• R-CH is omitted due to same as L-CH.
: AM or MW
: CD
: FM
: BUS AUDIO
: AUX
4-1. BLOCK DIAGRAM – MAIN Section –
SECTION 4
DIAGRAMS

WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
1616
X502
32.768kHz
14
13
39 49
50
48
40
SYSTEM CONTROL
IC501 (2/2) LCD DRIVER,LED CONTROL IC2
KEYIN1
CL
CE
BLUE
GREEN/AMBER
DIMMER
BLINK
LCD_SO
LCD_SCK
LCD_CE
KEYIN0
46 KEYACK1
11 RE-IN0
RE0
RE1 12 RE-IN1
XOUT
XIN
X501
7.92MHz
92
93 OSCOUT
OSCIN
77
78
76
P5/S5 3
P4/S4 2
P2/S2 80
P3/S3 1
COM1
I
COM4
LCD1
LIQUID
CRYSTAL
DISPLAY
PANEL
4
|
15
•
19
|
47
•
49
|
64
•
69
65
|
68
S6
I
S17
•
S21
I
S49
•
S51
I
S66
•
S67
DI
PANEL+B
KEY MATRIX
S2–13,15–21,250
(VOLUME)
PUSH DIAL SELECT
S1
ROTARY
ENCODER
95 SIRCS
REMOTE
CONTROL
SIGNAL
RECEIVER
IC1
LCD
BACK LIGHT
LED DRIVE
Q40
LED
DRIVE
Q41
LED
DRIVE
Q42
D48-50
LCD
BACK LIGHT
D54,57,58,61,62,65,
66,69,70,73,74,77,
78,81,82,85,86,88,
253,254,258
D52,55,56,59,60,
63,64,67,68,71,72,
75,79,80,83,84,87,
251,252,255,257
VOL ILLUMINATION
LED DRIVE
Q43
3
USB POWER
CONTROL SWITCH
IC802
99
SYNC OUT
89
USB OVER
79
USB ON
BATT
80
DD ON
IN VBUS
4EN
5OC
2
3IN 6
OUT
D803
L802
DC/DC CONVERTER
CONTROL
IC803
CD
MECHANISM
UNIT
(MG-101Z)
(2/2)
USB D+
USB D–
3CLR
2B5
Q
DC/DC CONVERTER
IC801
6
DRV
1RC
7
OUT 8
OUT
USB POWER
SWITCH
Q801
USB POWER
CONTROL
Q802
SWITCHING
REGULATOR
Q803
+5V REG
Q806
VOLTAGE
DETECT
Q804,805
5
4
3
VBUS CN203
D+
D–
2(USB)
L801 F801
L206
D804
34 RC IN1
45 KEYACK0
41 RC IN0
J701
(REMOTE IN)
• Signal Path
: USB
D44-47
GT77UI
VOL
ILLUMINATION
4-2. BLOCK DIAGRAM – DISPLAY Section –

WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
1717
• A: B+ Line.
• B: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
•
no mark : FM
( ): AM
< >: CD PLAY
• Voltages are taken with VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J: CD
F: FM
f: AM
L: AUX
c: USB
g: BUS AUDIO
For schematic diagrams:
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
• f: internal component.
• C: panel designation.
For Printed Wiring Boards:
Note:
• X: Parts extracted from the component side.
• Y: parts extracted from the conductor side.
• a: Through hole.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.) • Waveforms
– MAIN Board –
• Indication of transistor.
C
B These are omitted. E
Q
C
BThese are omitted. E
Note: The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replace only with part number specified.
0.04 Vp-p
4 MHz
1.2 Vp-p
32.768 kHz
0.05 V/DIV, 50 nsec/DIV
0.5 V/DIV, 20 μsec/DIV
IC001 RI (XTAL1)
IC501 RE (X_OUT)
1.5 Vp-p
7.92 MHz
0.5 V/DIV, 50 nsec/DIV
IC501 PE (OSC_OUT)

WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
1818
1
A
B
C
D
E
F
G
H
I
234567891011121314
(CHASSIS)
SUB OUT
(MONO)
SUB BOARD CN2
A
CN401
CN701
(USB IN)
CD
MECHANISM
UNIT
(MG-101Z)
FRONT
AUDIO OUT
1
15
115
4
6
1
37
8
11
10 9
8
1
1
46
31
3
1
2
20
21
1
37
236
1
16 17
32
21
20
40
1
1
7
8
14
1
45
8
1
45
8
DDG
SDD
G S
DD
DD
DDG
S
DD
1
100 3031
8180 50
51
C20
J701
C21
C22
R403
C23
R404
C24
C25
R211
R406
C26
R212
R407
C27
R213
R408
C28
R214
R409
R215
R216
R217
R218
R601
R602
R603
R604
CN201
R605
CN202
R606
CN203
R607
R220
R608
R221
R609
R801
R802
R803
R804
R610
R805
R806
R808
R809
R810
R811
R812
R813
R814
R815
R816
R818
C201
R819
C202
C203
C204
C205
C206
C207
C208
R820
R821
C209
R822
C401
R825
C402
R826
R827
JL001
C405
JL002
C406
JL003
C407
JL004
C408
JL005
C409
JL006
JL007
JL008
C601
JL009
C602
C603
C410
TH601
C411 C412
C413
JL010
C414
JL011
C415
JL012
C416
JL013
C417
JL014
C418
C801
C802
C803
C804
JL018
C805
C806
C807
C808
C809
C810
C811
C813
JL027
C814
C815
JL029 C817
C819
JL030
JL031
JL032
JL033
C820
JL034
JL035
C822
JL036
JL037
C823
JL038
C98
C824
C1
JL039
C99
C5
C6
C7
C8
JL040
C9
JL041
JL042
JL043
JL044
JW200
JL045
JL046
JL047
JL048
JL049
JL050
D201
JL051
US MODEL
EXCEPT
US
MODEL
JL052
D202
JL053
D203
JL054
D204
JL055
D205
JL056
JL057
JL058
JL059 Q501
Q502
Q503
IC001
D601
D603
D604
Q701
D605
Q702
D606
Q703
D607
D801
L501
D802
D803
D804
Q901 Q902
Q903 Q904
IC401
Q905
Q906 Q907
L701
L702
L703 L704
IC601
L901
JW10
IFM1
JW11
IFM2
JW12
IFM3
JW13
IFM4
JW14
IC801
IFM5
JW15
IC802
IFM6
JW16
IC803
IFM7
JW17
IFM8
JW18
JW19
JW20
JW22
JW23
JW24
JW25
JW26
JW27
JW28
JW30
R109
JW31
JW32
JW33
JW34
R301
J601
JW35
R302
JW36
R303
JW37
R110
R304
JW38
R111
R305
JW39
R112
R306
R307
JW40
JW41
R502
JW42
R503
JW43
JW44
R505
JW45
JW46
R507
JW47
JW48 R509
L1
JW49
L2
R701
L6
R702
R703
L7
L8
R704
JW50
R705
JW51
R512
R706
JW52
R513
R707
JW53
R514
R708
JW54
R515
R709
JW55
R516
JW56
R517
JW57
R518
JW58
R519
JW59
R903
R710
R904
R711
CN501
R905
R906
R907
R520
R908
R521
R909
JW61
R522
JW62
R523
JW63
R524
JW64
R525
JW65
R526
JW66
R527
JW67
R528
R910
JW68
CN701
R529
R911
JW69
R913
R914
R915
R916
R917
R530
R918
JW70
C301
R919
R531
JR1
C302
R532
JR2
JW72
C303
R533
JR3
JW73
C304
R534
JR4
JW74
C305
CN901
R535
JR5
JW75
C306
CN902
R536
JR6
JW76
C307
R537
JR7
JW77
C308
R920
R538
JR8
JW78
C309
R921
R539
JR9
JW79
R922
R923
C503
C504
C310
R540
JW80
C311
C505
R541
JW81
C312
C506
JW82
C313
C507
R543
JW83
R10
C314
C508
R544
JW84
R11
C509
R545
JW85
R12
C316
JW86
R13
C317
R547
JW87
R14
C318
JW88
C701
R15
C319
JW89
C702
R16
C703
C704
C510
X501
C705
C511
X502
C706
C512
C707
C513
C708
C320
C514
R550
JW90
C321
R551
JW91
C322
R552
JW92
C323
R553
JW93 C324
R554
JW94
C901
C325
C902
R556
JW96
C903
R557
JW97
C904
C328
R558
JW98
C905
A001
C329
1
3
R559
JW99
C906
A002
C907
C908
C909
C330
C332
R562
C333
R563
C910
R564
C334
C911
R565
C912
R566
C913
R567 R568
R1
R2
R3
C917
C918
R4
R5
C919
R6
R570
F801
C921
C922
C923
JW100
VR1
JW101
JW102
JW103
JW104
JW105
JW106
JW107
JW108
JW1
JW109
JW2
JW3
JW4
JW5
JW6
JW7
JW110
JW8
Q201
JW111
JW9
JW112
JW113
JW114
JW115
JW116
JW117
JW118
JW119
D305
D306
D307
D308
JW120
D309
JW121
JW122
JW123
JW124
L201
JW125
L202
D502
JW126
L203
D503
JW127
D310
JW128
D505
D311
Q601
JW129
D312
L206
JW130
D701
L401
JW131
D702
L402
JW132
D703
D704
JR10
JW134
Q801
D705
JR11
JW135
Q802
D706
JR12
JW136
Q803
JW137
D707
JR13
Q804
JW138
D708
JR14
IC301
Q805
JR15
JW139
IC302
Q806
JR16
IC303
JR17
JR18
D901
JW140
W1
JW141
W2
JW142
JR20
JW144
IC501
JR21
JW146
JW147
JR23
JW148
JR24
L801
JR25
JW149
L802
JR26
L803
JR27
JR28
JR29
D913
D914
JW150
D915
X1
JW151
JW152
JW153
JR30
JW154
JR31
JR32
JR33
JR34
JR35
JR36
JR37
JR38
JR39
JR40
JR41
JR42
JR43
JR44
JR45
JR46
JR47
JR48
JR49
C12
C13
R201
R202
C16
R203
C17
R204
C18
JR50
R205
C19
JR51
R207
14
28
R208
R209
1-879-271- (11)
11
MAIN BOARD
J1
(ANTENNA)
-1
LR
-3 -4
J901
-2 -5 -6
LR
L
LR R
BUS IN REAR
1
9
8
16
1
1
24 3
45
8
(BUS CONTROL IN)
(REMOTO IN)
FU601
3
X501
4-3. PRINTED WIRING BOARD – MAIN Section – • : Uses unleaded solder.
Ref. No. Location
• Semiconductor Location
Ref. No. Location
D201 F-8
D202 D-7
D203 G-9
D204 H-9
D205 G-9
D305 B-6
D306 C-6
D307 B-6
D308 C-7
D309 C-8
D310 C-8
D311 C-8
D312 C-8
D502 H-5
D503 I-8
D505 F-4
D601 B-9
D603 B-9
D604 B-9
D605 C-9
D606 G-9
D607 G-9
D701 C-9
D702 C-8
D703 D-8
D704 C-8
D705 D-8
D706 C-8
D707 D-8
D708 B-9
D801 F-10
D802 F-10
D803 H-10
D804 F-9
D901 D-8
D915 H-3
IC001 E-2
IC301 B-5
IC302 E-6
IC303 F-7
IC401 D-4
IC501 F-6
IC601 G-8
IC801 E-9
IC802 H-8
IC803 F-9
Q201 D-6
Q501 G-10
Q502 G-7
Q503 H-7
Q601 G-9
Q701 D-8
Q702 D-8
Q703 C-8
Q801 E-10
Q802 E-10
Q803 F-9
Q804 H-9
Q805 H-10
Q806 H-9
Q901 B-4
Q902 B-4
Q903 B-3
Q904 B-4
Q905 D-3
Q906 D-8
Q907 D-8
(Page 22)

WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
1919
84
F
10
A
15
E
3
D
11
C
9
G
7
H
152
J
6
B
I
141312
BOARD
(2/3)
MAIN
1
2
MAIN BOARD (3/3)
IC B/D
IC B/D
3.1 7.2 3.1 7.2
14.4
7.2 7.2 8.3 7.7 7.7 7.7 7.7 8.2 7.2 7.2
14.4
7.2 3.3 7.2
3
13.7 13.7
8.3
0 <3.3>
6.1
10.5 14.4
14
5.1
3.35.1
3.2
3.3
0
0
13.6
13.9
0.6
3
0.6
0
0
0
14.4
0
5.3 1.5
1.6
2.7
3.2
0
3.3
5.1
2.5
0.1
5.3
0
5.1
25V22
C303
0R302 0R301
10V
C325
1000
0.22
C301
0.22
C302 0.22
C313
0.22
C312
0.22
C322 0.22 C323
0.22C702 0.22C703
250uH
L701
1C305 1C304
1C307 1C306
1C309 1C308
1C311 1C310
0.01
C316
0.01
C318
0.01
C320
0.01
C324
0.01
C330
16V
10
C319
16V
10
C321
16V
10
C317
0R306
6.3V
330
C328
43 12
XC61CN2802NR
IC303
VOUT
VIN
NC
VSS
100k
R307
100k
R707
1kR702
4.7kR703
MAZ8180GMLS0D705 MAZ8180GMLS0D706 MAZ8180GMLS0D704 MAZ8180GMLS0D702
MAZ8180GMLS0D703
4.7kR701
1000pC704
1000pC705
16V3300C701
1N5404-C311-3
D701
1SS355WTE-17
D707
1SS355WTE-17
D901
10k
R705
10k
R706
2SC3052EF-T1-LEF
Q701
TEL-ATT DETECT
2SC3052EF-T1-LEF
Q702
ILLDETECT
2SC3052EF-T1-LEF
Q703
ACC DETECT
22k
R708
47k
R704
47k
R709 47k
R710
0.47
C707 0.47 C708 4.7k
R711
RT1N141C-TP-1
Q907
J701
(REMOTE IN)
L702
L703
L704
RT1P141C-TP-1
Q906
16V
47
C913
25V
470
C602
TH601
0
R605
0.1
C601
MAZ8180GMLS0
D601
MAZ8180GMLS0
D605
14 13 12 11 10 9 8
7654321
BA8271F-E2
IC601
BUS_ON
RST
BATT
CLK
VREF
DATA_I/O
GNDDATA_OUT
DATA_IN
BU_CHECK
CLK_IN
BUS_IN
RST
VCC
100
R602
100
R606
100
R601
RT1N141C-TP-1
Q601
MAZ8180GMLS0D607
1k
R608
15k
R607
1k
R604 1k R603
MAZ8180GMLS0
D603
0.01
C603
330k
R609
150
R303
47p
C332
0
R304
47k
R305
330k
R610
2.2
C333
TDA8588AJ/N2/R1
IC301
1
TAB
2
I2C_SIO
3
OUT-FL-
4
I2C_SCK
5
OUT-FL+
6
VP2
7
OUT-RL-
8
P-GND1
9
OUT-RL+
10
SVR
11
IN-RL
12
IN-FL
13
S-GND
14
IN-FR
15
IN-RR
16
BEEP
17
OUT-RR+
18
P-GND3
19
OUT-RR-
20
VP1
21
OUT-FR+
22
STB
23
OUT-FR-
24
P-GND4
25
DIAG
26
RST
27
ANT-REM
28
CRES
29
AMP-REM
30
AUDIO+B (8.5V)
31
SERVO-3.3V
32
GND
33
MECHA-6V
34
PANEL+B
35
VP
36
CBU
37
BU+B
G G G
J601
(BUS CONTROL IN)
8P
78 456
123
IVSS O
XC6218P332PR
IC302
D309
1A4-A2
D307
1A4-A2 D310 1A4-A2
D308
1A4-A2
D311
1A4-A2
D306
1A4-A2
D312
1A4-A2
D305
1A4-A2
1
C314
W1 W2
MAZ8062GMLS0D606
50V
4.7
C706
CN701
16P
1FL+ 2RL+ 3RR+ 4FR+ 5AMP-REM 6ANT-REM 7ACC 8GND 9FL- 10RL- 11RR- 12FR-
16+B
13TEL-ATT 14ILL 15TEST
17+B 18+B 19+B
47
R913
0.1
C329
MAZ8068GMLS0
D708
MA2ZD140GLS0
D604
0.01C334
IN-FR
IN-FL
HOT_GND
IN-RR
IN-RL
MUTE
8.5V
3.3V
A-GND
PANEL+B
RESET
STB
DIAG
ATT
MECHA+6V
8.5V
+B
A-GND
SERVO+3.3V
I2C_SCK_C,I2C_SIO_C
BUS_ON,SYS_RST,BU_CHECK,
ACC_IN,BEEP_C,ILL_IN,
I2C_SCK_C,I2C_SIO_C
I2C_SIO_C I2C_SCK_C
BEEP_C
TEL_ATT
ILL_IN
ACC_IN
RC_IN0
RC_IN1
UNISI
UNISO
BU_CHECK
UNISCK
BUS_ON
SYS_RST
BUS INTERFACE
IC601
I2C BUS CONTROLLED
IC301MAIN BOARD (1/3)
+3.3V REG
IC302
RESET
IC303
23
1
FU601
10A
Q601
BATTERY
CHECK
POWERAMP/MULTIPLE
VOLTAGE REGULATOR
MUTE DRIVE
Q906,907
RC_IN0,RC_IN1,TEL_ATT
UNISCK,UNISI,UNISO
13
REAR
AMP REM
2
12
ILL
ACC
+
7
6
4
16
14
10
BATT
L-CH
+
15
-
R-CH
1
FRONT
3
-
-
5
L-CH
9
-
+11
+
GND
R-CH
REAR
ATT
FRONT
8
ANT REM
4-4. SCHEMATIC DIAGRAM – MAIN Section (1/3) – • See page 27 for IC Block Diagrams.
(Page 21)
(Page 20)

WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
2020
A
B
11
D
G
2129136
F
I
34 14
H
7
E
C
8
J
1015
1
CN2
BOARD
SUB
A
BOARD
(1/3) 1
MAIN
3
MAIN BOARD (3/3)
IC B/D
IC B/D
8.3
(6.5)
8.3
1.2
0
0
2.6
(6.5)
(2.9)
(1.2)
(4)
(1.2)
2.2
5.6
8.3
6.9
3.4
3.1
3.1
6
6
(5)
(3.6)
(2)
3.8
3.8
(1.8)
8.3
(4.2)
(1.4)
(2.9)
(2.9)
0
0
3.1
3.1
0
0.4
3
3.9
(1.1)
0.8
4.1
4.1
4.1
4.1
3.7
3.7
3.5
3.4
3.8
3.8
3.8
3.8
3.8
3.8
4.1
4.1
4.1
4.1
0
0
0
4.1
4.1
4.1
4.1
4.1
8.3
3.1
3.1
3.7
00000
00000
1*2
(US)
*
(EXCEPT US) (US)
(EXCEPT US)
2
*
2
**1
*2
0.1
C416
1
C922
1
C921
0R109 0R110
0
R111
1000p
C919
R112
10k
L901
470
R914
470
R915
3.3kR4063.3kR408
4700p
C410
4700p
C413
4700p
C918
4700p
C917
0.033
C411
0.033
C412
50V
10
C414
50V
10
C909
50V
10
C910
50V
10
C911
100p
C902 100p C903
100p
C904 100p C905
100p
C901 100p C906
1k
R903
1k
R904
10k
R905
10k
R906
220
R909 220 R911
1
C401
1C402
1
2
3
4
5
5P
CN203
USB_SHIELD
GND(USB)
D-(USB)
D+(USB)
VBUS(USB)
ABSORBER, CHIP SURGED914 ABSORBER, CHIP SURGED913
12k
R917
12k
R916
220
R908
50V
10
C907
220
R907
50V
10
C908 1
C407
47p
C408
LTC614TKFP8T146
Q901
LTC614TKFP8T146
Q902
LTC614TKFP8T146
Q903
LTC614TKFP8T146
Q904
LTC614TKFP8T146
Q905
3.3k
R407
3.3k
R409
R218
0
MAZ8068GMLS0
D203
C912
4700p
1
C405
1
C406
MAZ8068GMLS0
D205
MAZ8068GMLS0
D204
CAM001
JL035
JL045
JL036
JL046
JL037
JL038
JL029
JL039
JL030
JL040
JL031
JL041
JL032
JL042
JL033
JL043
JL034
JL044
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CN902
18P
DOOR-IND
DOOR-SW
+B(LCD-LED)
SIRCS
KEY0
LCD_DATA
RE1
RE0
LCD-CLK
LCD-CE
KEY1
GND(KEY)
AUX-L
AUX-GND
AUX-R
GND(LCD-LED)
GND(LCD-LED)
RESET
1 2 3
3P
CN901
SUB_OUT GND SUB_OUT
50V2.2
C417
50V2.2C418
1
2
3
3P
CN202
D+(USB)
D-(USB)
GND(USB)
L401
L402
2.2k
R918
50V
2.2
C923
220
R910
JW200
D915 UDZSUSTE-176.8B
10k
R922
10k
R919 10k R921 10k R923
10k
R920
47k
R404
0.1
C409
1
23
4
L206
R221
22 R220 22
100p
C99
10V
220
C415
1.5k
R403
L1
G G
R1
L2
R2
R3
L3
J901
40
39
38
37
36
35
34 7
6
5
4
3
2
1
33
32
30
31
8
27
28
29
9
10
11
12
13
14
24 17
25
26
23
22
21 20
19
18
15
16
BD3447AFV-E2
IC401
BUS_LCH
BUS_RCH
TU_LCH
TU_RCH
CD_LCH
CD_RCH
AUX_LCH
AUX_GND
AUX_RCH
NCO
NCO
NCO
ZAP_BEEP
NCO
NCO
ZAP_BEEP
EBIAS
DS2_L
DS1_L
DS3_L
DS3_R
DS1_R
DS2_R
EBIAS
NCO
NCO
SA_CLK
SA_DA
SA_OUT
OUT_SRCH
OUT_SLCH
OUT_RRCH
OUT_RLCH
OUT_FRCH
OUT_FLCH
VCC(8.5V)
I2C_SCK
I2C_SIO
GND
FIL
JW113
C98
1000p
JW147
100R13
C6
3.3uH
L1
VR1
JW148
0.01C23
32 31 30 29 28 27
123456
26 25 24
789
23 22 21 20
10 11 12
19 18 17
13 14 15 16
IC001
AMRFIN
AMRFDEC
FMIN2
FMIN1
GNDRF
VCC2
AMRFAGC
LOUT
ROUT
GNDAUD
AMIFAGC2
MPXIN
MPXOUT
RSSI
XTAL2
XTAL1 GNDD
SCL
SDA
VREF
VREGSUP
VCC1
GND
VCODEC
PLL
PLLREF
TEST
AMSELIN1
AMSELIN2
AMIFAGC1
AMSELOUT1
AMSELOUT2
JW126
16V
47
C28
22R12
0.01C19
1C21
JW137
JW102
0.1
C9
0.1C27
R15
0.01
C8
0R4
1000p
C1
4.7kR11
0.01C20
470k
R1
0.1C24
0.1
C26
J1
0.01C22
4MHzX1
0.1C17
33kR10 100R14
L6
1
2
34
6
0.1C25
R3 1000p
C5
470k
R2
68kR6
CAM002
2.2C13
12pC18
0.22
C12
6p
C7
0R5
560uHL8
560uHL7
L2 2.2uHR16
0.47C16
JW138
A001
(CHASSIS)
PANEL+B
A-GND
3.3V
MUTE
8.5V
IN-RL
IN-RR
HOT_GND
IN-FL
IN-FR
HOT_GND
CD-RCH
CD-LCH
RESET
VBUS
3.3V
A-GND A-GND
SA_CLK,SA_DA,SA_OUT,
DAVN,RDS_ON,VSM
I2C_SCK_C,I2C_SIO_C
DOOR_SW,KEY_IN0,KEY_IN1,
LCD_CE,LCD_SCK,LCD_SO,
RE_IN0,RE_IN1,SIRCS
I2C_SIO_C
I2C_SCK_C
SA_OUT
SA_DA
SA_CLK
ZAPPIN_BEEP
DOOR_SW
SIRCS
LCD_SO
RE_IN1
RE_IN0
LCD_SCK
LCD_CE
VSM
I2C_SIO_C
I2C_SCK_C
KEY_IN1
KEY_IN0
DAVN
IC401
ELECTRONIC VOLUME
PHASE LOCKED LOOP(PLL)
IC001
MAIN BOARD (2/3)
FM MIX
(ANTENNA)
LR -1-2-4 -3-6 -5
REARFRONT
AUDIO OUT
AUDIO IN
BUS
(CHASSIS)
SUB OUT
(MONO)
( )
Q901-905
MUTE
ZAPPIN_BEEP
TEF6607T/V4/S470,518
ABSORBER,CHIP SURGE
LRRL
6P
(CHASSIS)
(USB)
(MG-101Z)
(1/2)
CD MECHANISM
UNIT
9p
C6 R3,15,16
10p 0 FERITE
4-5. SCHEMATIC DIAGRAM – MAIN Section (2/3) – • See page 17 for Waveforms. • See page 28 for IC Block Diagrams.
(Page 23)
(Page 21)
(Page 19)