Schematic - Zh 0454 Keyboard - BRUEL & KJAER 5998 Service Manual

Brüel & Kjær
BI 5044 –11
GUP GDN
VDD VDD
R10 R9
10K0 15K8
C9
RC3401 RC3420
Gain up
470NF
6 7
CC0066
S1
NT0213
CEXT REXTCEXT
1 2 9
A
5
Q
C10 VDD
D3
47NF 10 12
B Q
CC0047 CLR
74HC423
11
VD6646
VDD VDD
R12 R11
10K0 15K8
C11
RC3401 RC3420
Gain down
470NF
14 15
CC0066
S2
NT0214
CEXT REXTCEXT
1 2 1
A
13
Q
C12 VDD
D3
47NF 2 4
B Q
CC0047 CLR
74HC423
3
VD6646
GUP,GDN,OUP,ODN,FUP,FDN,REF,LOC,GA,GB,GC,OA,OB,FA,FB,REF_L,REMOTE_L
VDD
H1 H2 H3 H4 H5 H6
GREEN_LED
QV4014
Gain R17 R18 R19 R20 R21 R22
392
RC3258
D5
VD6623
15 0dB
Y0
GA 1 14 10dB
A Y1
GB 2 13 20dB
B Y2
GC 3 12 30dB
C Y3
VDD 11 40dB
Y4
6 10 50dB
G1 Y5
4 9
G2A Y6
5 7
G2B Y7
74HC138
VDD
H7 H8 H9
GREEN_LED
QV4014
Filter
R24 R23 R25
392
RC3258
D6
VD6623
15 1Hz
Y0
FA 1 14 20Hz
A Y1
FB 2 13 100Hz
B Y2
3 12
C Y3
VDD
11
Y4
6 10
G1 Y5
4 9
G2A Y6
5 7
G2B Y7
74HC138
Reciprocity Calibration Apparatus Type 5998
Service Manual
OUP ODN
VDD VDD
R13 R14
10K0 15K8
C14
RC3401 RC3420
Output up Filter up
470NF
6 7
CC0066
S3 S5
NT0213 NT0213
CEXT REXTCEXT
1 2 9 1 2
A
5
Q
C13 VDD D4 C4
47NF 10 12 47NF
B Q
CC0047 CLR CC0047
74HC423
11
VD6646
VDD VDD
R15 R16
10K0 15K8
C16
RC3401 RC3420
Output down Filter down
470NF
14 15
CC0066
S4 S6
NT0214 NT0214
CEXT REXTCEXT
1 2 1 1 2
A
13
Q
C15 VDD C1
D4
47NF 2 4 47NF
B Q
CC0047 CLR CC0047
74HC423
3
VD6646
VDD
H10 H11 H12 H13
GREEN_LED
QV4014
Output R27 R26 R28 R29
392
RC3258
D7
VD6623
15 A
Y0
OA 1 14 B
A Y1
OB 2 13 Ref
B Y2
3 12 Gen
C Y3
VDD 11
Y4
6 10
G1 Y5
4 9
G2A Y6
5 7
G2B Y7
74HC138
VDD VDD
H14 H15
GREEN_LED GREEN_LED
QV4014 QV4014
R30 R31
392 392
RC3258 RC3258
REF_L
REMOTE_L
Schematic – ZH 0454 Keyboard
FUP FDN
VDD VDD VDD
R4 R3 R8
10K0 15K8 10K0
C3
RC3401 RC3420 RC3401
Reference
470NF
6 7 6
CC0066
S7
NT0160
CEXT REXTCEXT CEXT
9 1 2 9
A A
5
Q
VDD C8 VDD
D1
10 12 47NF 10
B Q B
CLR CC0047 CLR
74HC423
11
VD6646
VDD VDD VDD
R1 R2 R6
10K0 15K8 10K0
C2
RC3401 RC3420 RC3401
Local
470NF
14 15 14
CC0066
S8
NT0160
CEXT REXTCEXT CEXT
1 1 2 1
A A
13
Q
VDD C6 VDD
D1
2 4 47NF 2
B Q B
CLR CC0047 CLR
74HC423
3
VD6646
X1
GUP 1
GDN 2
OUP 3
ODN 4
FUP 5
FDN 6
REF 7 VDD
LOC 8
GA 9
GB 10 C17
47N
GC 11
OA 12
OB 13
FA 14
FB 15
REF_L 16
REMOTE_L 17
VDD
18
19
20
21
22
23
24
JP2406
ENGINEER DEPT. DATE
HBC 8349 960712
DRAFTER DEPT. DATE RECIPROCITY CALIBRATION APPARATUS
HBC 8349 960712
APPROVAL DEPT. DATE SERIALNUMBER VERSION
HBC 8349 960712 1
TYPE DRAWING NUMBER
DATE FILE NAME SHEET
5998 ZH0454
7-15-1996_11:39 ZH0454 1
Chapter 7 — Electrical Diagrams
REF LOC
VDD
R7
15K8
C7
RC3420
470NF
7
CC0066
REXTCEXT
5
Q
D2
12
Q
74HC423
11
VD6646
VDD
R5
15K8
C5
RC3420
470NF
15
CC0066
REXTCEXT
13
Q
D2
4
Q
74HC423
3
VD6646
C18 C19 C20 C21 C22 C23
47N 47N 47N 47N 47N 47N
CC0047
TITLE
KEYBOARD
B
K
PCB NUMBER SHEET NUMBER
XM0459 1
7 – 23