TX3 40
B6C NC B40INST C732 43 X INSZ C1541 XBUS HDG SYNC AC 2NCA15Y INSC161 1 YEXCIT 3 2CA16Z CXX 2NOC3211 H'
A40 XZC A28A32X14 YY B15
TX4 10
YHH Y
Y DR/ILS A29 RS13 B16ZZ
12 Z
R298 F/O RAD/INS RLY Z CAC B32
S609 F/O INS SW A30X CXH 48 C17 X HDG VALID -51 Y A17Y B39
TX5 49
C34
DB144C DCC Y52 HSI VALIDA34ZZ
54 A37C3550 ZAC A35X HDG VALID +B17
55 A36YB34 180` BIAS SIGNAL
23
ZDB104C26V AC B35MAG HDG C
B144 CTL INSTR DB182E DB182E A
22 24
ESS FLT 55 C39 XVALID FLAG X XWRN CMPTR (E1-1) 27 B14A39 67INST C576 NC B39
Y YB104 MHR 2 CMPS CPLR
CDX 28
68 CTBUS MDG SYNC
21
YNC C38 Z Z B15(E1-1) 29A38
EXCIT 2 SHEET 4 SEL HDG76B38 HEADING ZNO. 1 B16P7 PANEL-OVERHEAD
CDX
0 03MAG HDG 28V DCR307 F/O CMPS RLY
CIRCUIT BREAKER DB103B XDB103B X 73(P73) BY1H
RADIO MODE GND C 4 34-31-00 74Y Z0 30
TX2 2
NO. 1 805 N125 F/O HSI (P3)Z 34-31-00DR3063AC DR306 NC B381 1 B182 A/P-F/D MODE SEL PNLA38 SHEET 4 XX DN13330 C38C
(P10) N33
SHEET 4 Y Y 18
TX1 29
H B3932 CZZ
A39 SHEET 4 AC 731 NC C39 AC HX 1048H B1751 C
SHEET 4 Y A17 AC
24 52
C TX5 49 B34
A34 SHEET 4 XZ B35 850
A35 YAC C17
34-31-00 9 TX
ZC34MAG HDG DB103C 23C35 HDG
55 NO. 2 X VALID FLAG 1
B103 MHR 1 CMPS CPLR R306 CAPT CMPS RLY Y
2RS
(E1-1) (P73) Z
3HDG VALID +36 HDG VALID -DC 37
DB180B DB179 DB181C 28V AC DN164 XSEE N13242
60 41 14 B60 C42 ESS FLT
36 DN164 17 YX FOR -
INST C1122
1
DC 34-31-00 34 TR BUS ADF RMI 2 37NO. 1 Y INTERNALS Z2C 31
DR307
7 ACZ FOR PINSDR307 3
ALTN
H
B26
28V AC
A26 18 H SHOWN 27 C
C26
1 C & H, X & Y INTENTIONALLY AC
26
REVERSED TO PROVIDE C1120
FLT INST
B180 A/P-F/D B B179 A/P-F/D A B181 A/P-F/D C BUS 2 N164 F/O ADF RMI (P3)
CORRECT INDICATION ADF RMI 2 NO. 2 N132 CAPT VOR RMI (P1)
ROLL CMPTR (E1-5) ROLL CMPTR ROLL CMPTR
(E1-4) (E1-6) P7 PANEL-OVERHEAD R307 F/O CMPS
2 SINGLE AREA GROUNDS
CIRCUIT BREAKER XFR RLY (P73)
Magnetic Heading Reference System Schematic
Figure 4 (Sheet 6)
EFFECTIVITYAT ALL 799Page 25/26
34-21-00
Aug 25/87
26V AC
28V DC 6 NO. 2 DR3075 SHEET 4 CAFLT INSTESS FLT 4
DC DB231B C741A45
VOR/ILS DN125BUS 2COMPASSC736INST DR298MSI 2 (P7)
A44 8
B41DR298 AC POWERCAPT 2-F/O 2CAPT FLT
BUS C37
B43
7
A37 B40 SUPPLYCAPT 1-F/O 2 34-41-00INST SW DR307 B37
CAPT 1-F/O 1RELAYS VOR ILSA42 B231 INSTR SW ACCESS BCKTCOMP 3 INS ANN
BOX (P73)
A41 INTRPT A3126V AC 2 1 C25DC MAG/TRUE ANNDB195CC26FLT INST A25 B48A26C730 NC B25BUS 2 B26 B31XS606 CAPT CMPS XFR SW (P1)VOR RMI 2 C1C38 18 B32DC YA3826V AC C5B38 B33ZXESS FLT C1 B195 AFC 2 C6X X RESERVED B34INST C1107 A1Y A1XACCESS BOX (E1-5)C5 YMAGNETIC HDG B1Y B28BUS VOR RMI 2 A5Z A5YC6 Z Z B29 RSDB104B 34-41-00 B5ALT A6X A6ZB1DB104B X B30B626V AC YN 39 B542 C39FLT INST Y Z
TX3 40
B6C A39BUS C732 43 34-41-00 B39XZ C1541 XHDG SYNC AC A15Y INSC16 YX XEXCIT 3 N'A16Z11C C32 R298 F/O RAD/INS RLYZ C14 YY SINA32X X
TX4 10
B15N A28113 CAPT 1/FO 1YZZ Y COSB16 33-11-0012 DB144C A29 RSAC 3 SAME ASZB32 Z54X A30L1655X 2N 48 C17 HSI VALIDX51 55Y A17 A37Y
TX5 49
C34C Y L1656 HDG VALID +52 A34ZZ A36C3550 Z CAPT 1-F/O 1 CMPS B144 CIES COMPUTERAC HDG VALID -A35X26V AC B17 B39DCRLY POSN LT (P1) (E1-1)Y
180` BIAS SIGNAL A
FLT INST B34 CZ CAPT 1-F/O 2BUS C1119 DB104C B35 2MAG HDG X
DB182E DB182E B14ADF RMI 1 55 C39 X XVALID FLAG 3A39 19 27ALTN B39 CTNO. 1 Y
Y Y
33-11-00 1B104 WHR 2 CMPS CPLR (E1-1)
CDX 28 B15TEST GND 20NO. 1B2526V AC Z
28V DC Z 29A25 21 ZFLT INST C25
HEADING B16 BUS 2 C1121
L1655
NO. 2
CDX
003 28V DCCAPT 1-F/O 2 CMPSMAG HDGADF RMI 1 R307 F/O CMPS XFR RLY (P73) RLY POSN LT (P1)DB103B BXDB103B X 16 VOR ILS MODE GNDY1N NO. 1 DR3064
34-31-00 17 34-21-00Y Z N125 F/O MSI (P3)
TX2 2
B38C 18DR3065 Z COURSE 1A383AC SHEET C381 1
B182 A/P-F/D MODE SEL PNL C
4 A41XX
30 DN133A43 (P10)33 A42YY N
TX1 29
18N32 A40ZZ C31 AC 726V AC AC B48X DN16348NESS FLT XNC C4051 Y 1
SHEET
TX5 49
INST C
Y WB39C576 52 2 10Z A39 4BUS 50 ZC39 CSEE N133 FORHDG SYNC 3AC AC 24B17 H INTERNALS FOR XEXCIT 2 18A17 8B34DB103CMAG HDG
C PINS SHOWN YA34 7ACB3555 34-31-00 9 TXVALID FLAG A35 ZC17 36 23
C34 DC 37B103 MGR 1 CMPS CPLR C35 NO. 2 X(E1-1) 1N163 CAPT ADF RMI (P1) YR306 CAPT CMPS XFR RLY (P73) 2 RS
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