Front Panel & Reset - Sony VTX-D800U Service Manual

A B C
B..-VTX-D800
1
FULL HARDWARE RESET CIRCUIT (STANDBY BUTTON FOR AT LEAST 5s)
+3V3
2
D506
DAN202K-T-146
R533
220k
1/10W
R510 R511
100 220k
1/10W 1/10W
3
SIGNAL FROM FRONT
PANEL STANDBY BUTTON
NOTE Leakage
May dictate
A change of
STBY_SW
Dielectric
Q504 C505
1
DTC144EKA
6.3V
4
SWITCHES AND LEDS
5
R540
10k
1/10W
STBY_LED_1
R541
10k
1/10W
STBY_LED_2
6
R544
R543
10k 10k
1/10W
1/10W
SPR-325MVW
7
CHANNEL_DOWN_SW
CHANNEL_UP_SW
STBY_SW
8
IR RECEIVER
+3V3
R555
9
4.7k
1/10W
IR_IN_0B
VCC OUT
GND
IC502
RPM7240-H5
C508 C503
0.1 100
16V 10V
10
11
D E F
R513
R531
10k
18k
1/10W
1/10W
Q512
R537
R532
2SA1037AK-T146-QR
100k
3.3k
1/10W
1/10W
R534 Q511
100k 2SA1037AK-T146-QR
R536
1/10W
100k
1/10W
R535
10k
1/10W
Q513
2SA1037AK-T146-QR
R514
R512
22k 22k
Q506
1/10W 1/10W
2SC2412K-T-146-R
+3V3
Q510
2SA1037AK-T146-QR
Q509
2SA1037AK-T146-QR
R529 R530
120
180
1/10W 1/10W
STANDBY LED
R547 R548
R546
1k 1k
1k
D502
1/10W 1/10W
1/10W
STANDBY CHANNEL UP CHANNEL DOWN
S500 S501 S502
B
2/6
G H I J
RESET SIGNAL GENERATION
RESET PULSE STRETCHER
R538
22k
1/10W
GEN_RSTB
Q505
2SC2412K-T-146-R
RSTOUT
R549
R539
47k 1/10W
1/10W
RESET CIRCUIT
+3V3
D500
DAN202K-T-146
R500
1k
PST575IMT-T1
VCC
OUT
C500
0.1
16V
D505
BZA456A
- 24 -
K L M
+3V3
R550
R554
1k
470
1/10W 1/10W
R553
1k
1/10W
Q515
2SC2412K-T-146-R
R552
Q514
10k
2SC2412K-T-146-R
1/10W
1k
C509
1
6.3V
R551
100
1/10W
GND
R501
22k
R527
1/10W
100
1/10W
C501
XX
GEN_RSTB
C502
10
IC500 CN503 4P
16V
GND 1
GND
RSTB 2
NOTE: NMI IS FOR EJTAG ONLY
NMI NMI
3
CD
GND 4
4 PIN RESET HEADER
NO MOUNT IN PRODUCTION
RSTSWB
RSTSWB
~ B Board Schematic Diagram [ Front Panel & Reset ] Page 2/6 ~
N
JL502
Q500
DTC144EKA