CDX-GT828U/GT870US/GT878US
CDX-GT828U/GT870US/GT878US
20
20
RESET
SYSTEM CONTROL
IC303 (2/2)
USB VBUS REG
IC603
FL DRIVER,LED CONTROL,
FLASH MEMORY CONTROL
IC901
FL901
FLUORESCENT
INDICATOR TUBE
REMOTE CONTROL
SIGNAL RECEIVER
IC903
STB
X302
6MHz
BU+3.3V
BATT
KEY MATRIX
S902–914
X301
32.768kHz
BU+3.3V
FM(50K)
S301
FREQUENCY
SELECT
AM(9K)
FM(200K)
AM(10K)
V–BUS
FL F+
FL F–
FLVDD2(55V)
FLVDD1(3.3V)
X901
6.75MHz
PUSH ENTER/ SOUND/ MENU
RE901
ROTARY
ENCODER
KEY MATRIX
S701,915,916
S302
FRONT PANEL
DETACHABLE DETECT
LED917–920
BATT
Q909
GT878US
Q908
FL F+
FL F–
FL VDD2(55V)
BATT
D640
D623
D622
T620
DC-DC CONVERTER
TRANSFORMER
RED LED
DRIVER
Q902
S103
RESET
LED701
;
LED702
DOOR
INDICATOR
FLASH MEMORY
IC905
D902
D662
V–BUS
USB BUS INTERFACE
IC904
Q901
S901
CD
MECHANISM
UNIT
(MG–101I)
(2/2)
D905
D600
BU+5V
FLVDD1(3.3V)
USB D+
USB D–
+5V REG
IC602
REGULATOR CONTROL
IC621
L602
J370
(REMOTE IN)
GT870US/GT878US
LED DRIVER
Q601,602
FSW CONTROL
Q621,622
POWER
CONTROL
Q651,652
CNVSS
BUFFER
Q910,911
FRONT PANEL
OPEN/CLOSE
DETECT SWITCH
Q606,607
FL ON
SWITCH
Q624
6
5
4
1
CN902
(USB)
LED901–904,
906–916
PANEL+B
GREEN LED
DRIVER
Q903
BLUE LED
DRIVER
Q904
LED
DRIVER
Q905
BU+3.3V
BATT
POWER
SWITCH
Q603
VOLTAGE
DETECT
Q662,663
POWER
CONTROL
Q623,642
18 SI1
19 SI2
20 SI3
11 LAT
13 GCP
17 CLK
10 BK
6 VDD1
9 VDD2
1 F+
2 F+
3 F+
38 F–
39 F–
40 F–
VOLTAGE
DETECT
Q641
DRIVER
Q620
A0–A19
D0–D15
GT878US
FRONT PANEL
OPEN/CLOSE
DETECT
• Signal Path
c
: USB
c
c
c
c
5-2. BLOCK DIAGRAM – DISPLAY Section –