Schematic Diagram - Key Board (1/2) - Sony MEX-BT5000 Service Manual

MEX-BT5000
5-19. SCHEMATIC DIAGRAM – KEY Board (1/2) –
(1/2)
ENC702(1/2)
VOL
CN701
20P
NC
USB_GND
D703 UDZSTE-176.8B
DISP_RX
D702 UDZSTE-176.8B
DISP_TX
D711 UDZSTE-176.8B
RE_IN0
D719 UDZSTE-176.8B
DP_FLS_W
D704 UDZSTE-176.8B
DISPLAY_CONTROL
R794
FL-VDD1(3.3V)
R795
LED+10V
D718
GND
UDZSTE-1718B
DOOR_SW
FL-F1(+,+4.3)
(Page 43)
FL-VSS
FL-VDD2(+55V)
C702 0.1
FL-F2(-,+1.0V)
D717 UDZSTE-176.8B
RE_IN1
D701 UDZSTE-176.8B
RESET(DISPLAY)
GND
GND
D713 UDZSTE-176.8B
KEY_0(KEY_ACK)
FL701
FLUORESCENT INDICATOR
TUBE
R720
100k
C729
0.1
Note: When IC704 on the KEY board is replaced, the version up
of the firmware is necessary. When performing the version
up, refer to THE VERSION UP OF THE FIRMWARE in SER-
MEX-BT5000
VICING NOTES.
• See page 41 for Waveforms. • See page 47 for IC Block Diagrams.
R721 R731
100 100
D709
D707
UDZSTE
UDZSTE-176.8B
-176.8B
BUS_RX
BUS_TX
C730 1 MAS_IF
C703 0.1
R796
R797
D705
RB751V
KEY_IN0
R745
KEY_IN1
10k
R003
KEY_IN2
10k
BUS SWITCH
IC701
SN74CB3T1G125DCK
R726
100k
OE VCC
R722
A
100
GND B
D716
R793
UDZSTE
22
-176.8B
S13
S12
S11
CLK
LAT
BK
C728 C725
0.1 0.1
• See page 52 for IC Pin Function Description.
R719
100k
R704
100k
REMOTE CONTROL
RECEIVER
R723
100 IC703
RS770
FLS_
WRT
FLMD1
C721
ENTER
1000p
NC
NC
NC
NC
NC
NC
Q701 NC
DTC144EKA
NC
INVERTER
NC FRONT PANEL CONTROLLER
D714
UDZSTE
NC
-176.8B µPD70F3263GC
NC
R746 100
KEY1
R749 100
KEY0
R004 100
KEY2
D715
NC
UDZSTE
-176.8B
NC
NC
NC
NC
C723
NC
0.1
NC
C724 R767
NC
1000p 10k
CTR
FLMD
AVREF0
C712
0.1
C731
0.1
C732
0.1
C717
0.1
44 44
R751
680
C711
0.1
R761
1k
EDGE_TGR2
GCP_EDGE2
GCP_TGR2
R713
GCP2
GCP_TGR3
R712
GCP3
NC
NC
R711
FL_CKI2
R710
FL_SO2
NC
R709
IC704
BK
-B500-8EA-A
NC
R708
LATCH
NC
C710
NC
0.1
R707 10
EVDD
EVSS
NC
NC
R706
GCP1
GCP_TGR1
GCP_EDGE1
EDGE_TGR1
R705 22
BUS_RX
R701
22k
R703
22
C718
0.1
C709
R742
0.1
100k
OUT IN
VOLTAGE DETECT
GND NC
IC702
PST3428
A1
A2
A3
A4
A5
(Page
45)
BK
BK
CLK
S12
BK
LAT
C722
0.01
BK
BUS_RX
OR GATE
IC705
TC7WZ32FK