1
PB RST
2
TD
3
TOL
4
GND
8 Vcc
7 ST
6 RST
5 RST
MAX1232
Vcc
TOL
TD
PB RST
ST
RST
RST
DEBOUNCE
RESET
GENERATOR
5%/10%
TOLERANCE
SELECT
WATCHDOG
TIMEBASE
SELECT
WATCHDOG
TIMER
GND
REF
+
-
+
MAXIM
MAX1232
MAXIM
6) U7 (7812ACT)/U8 (7805CT): VOLTAGE REGULATOR
100K
500
100
100
0.3
10K
6K
500
1K
5K
28K
6K
30pF
2K
5K
200
240
1.4
K
2.7
K
3.3
K
0.19K
INPUT
OUTPUT
GND
SCHEMATIC DIAGRAM
TSUFFIX
PLASTIC PACKAGE
CASE 221A
TO-220TYPE
PIN 1. INPUT
2. GND
3. OUTPUT
1
2
3
5) U6 (MAX 1232EPA): RESET I.C
52
Summary of Contents for HWG195C
Page 36: ...35 CONTROL BLOCK DIAGRAM 6 1 42HWG007 009 012 018 024 HWG195C 225C 305C 455C 605C...
Page 37: ...2 42HQG007 009 012 018 024 HWG195 225 305 455 605H SERIES 36...
Page 43: ...b MAIN CONTROL PART 42HWG018 024 42HQG018 024 HWG455 605C HWG455 605H 42...
Page 45: ...c REMOTE CONTROL PART 44...
Page 48: ...47 c CONTROL PCB SOLDERING SIDE 42HWG018 024 42HQG018 024 HWG455 605C HWG455 605H...
Page 49: ...48 d CONTROL PCB COMPONENTS SIDE 42HWG018 024 42HQG018 024 HWG455 605C HWG455 605H...
Page 60: ...59 TROUBLE SHOOTING 10...
Page 64: ...EXPLODED DIAGRAM AND PARTS LIST 12 63...
Page 89: ...Carrier Corporation P N 42KG8K54600 Version 1 0...