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R311
10R FU
C304 D300 Q300
R301 Q304
BC546B
BC546B
+
4K7 MF
47U EL 100V 1N4003F C310 +38V_R +38V_L
D301 + 100U EL 100V + C312
D304 C317 C319
1N4003F +37V_L
ZENER 500MW 39V 220U EL 50V 100N CD +38V_R 100N CD
ACLT1
AC
MAINS INPUT SK303
0V_PSU C311 0V_HF
SK300 1 + 100U EL 100V C320
Grey D302 + C313 -37V_R -37V_L
IEC3 2 D305 C318 100N CD
Grey C305 1N4003F
ZENER 500MW 39V 100N CD
47U EL 100V 220U EL 50V
D303 Q302 -38V_R -38V_L
CAGECLAMP2 R302 Q305
0V_DIG BC556B
+
N E L BC556B
TX300 4K7 MF R312
+37V 1N4003F
E
L
N
L816TX 10R FU
PSUP300
C300
9Vac
3N3 MAINS SELECT VOLTAGE
1
BR300
BY FITTING FS201
+
C301 OR FS202 C306 Z300
MAINS_N300 3N3 MAINS + 100N PE 100V 7805 +15V
T300
230V 3 2 I O
~ ~ C308 Vin Vout +300
0V_LS_L
GND
MAINS_E300 10M EL 50V 0V_HF
OR300
BLUE301 + C106
-
FS301 SK304 1U0 EL + C315
G
3 BRGBU8D
4
FS300 AS2A5_115V T301 Orange 1 0V_SIG SP300 100U EL
MAINS_L300 2 115V Orange
AS1A25 Dark Grey 2 STAR_10 0V_LS_R
MAINS SWITCH 1 Blue
Blue 3 D306
Orange
SW300A SW300B 10V 400MW
SK301 CAGECLAMP3A C314
A1007 100P CD
C302
3N3 MAINS 0V_DIG 0V_HF
CAGECLAMP3 C309 0V_SIG D307
A1007 OR301 10M EL 50V 0V_PSU 10V 400MW
BLUE300
+ C307
CS1 SK302 100N PE 100V
220N X2 CLASS GREEN300 1 SCREEN + C105 + C316
Green
ACSENSE 1U0 EL 100U EL
CAGECLAMP1
PD300
NSUP300
G
Chassis Earth Point,
TOOLING FIT ONLY ONE FUSE
GND
Use correct screw and washer.
-37V
I O -300
Vin Vout
Z301 -15V
7905
EL
EARTH LEAD
R300
100R MF 8M101
EARTH LEAD
DO NOT USE THE FOLLOWING NUMBERS AS LINKS - THE DESIGNATORS ARE ALREADY USED ON OTHER PARTS OF THIS CCT!
0V_HF LK100, LK101, LK102, LK103, LK104, LK168, LK170, LK171, LK172, LK173, LK174, LK175, LK176, LK177,LK200, LK239
LK1 LK6 LK11 LK16 LK21 LK26 LK31 LK36 LK41 LK46 LK51 LK56 LK61 LK66 LK71 LK76 LK81 LK86 LK91 LK96 LK106 LK111 LK116 LK121 LK126 LK131 LK136 LK141 LK151 LK156 LK161 LK166 LK181 LK186 LK191 LK196
LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK17.5NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP
LK2 LK7 LK12 LK17 LK22 LK27 LK32 LK37 LK42 LK47 LK52 LK57 LK62 LK67 LK72 LK77 LK82 LK87 LK92 LK97 LK107 LK112 LK117 LK122 LK127 LK132 LK137 LK142 LK152 LK157 LK162 LK167 LK182 LK187 LK192 LK197
LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK15NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP
LK3 LK8 LK13 LK18 LK23 LK28 LK33 LK38 LK43 LK48 LK53 LK58 LK63 LK68 LK73 LK78 LK83 LK88 LK93 LK98 LK108 LK113 LK118 LK123 LK128 LK133 LK138 LK143 LK148 LK153 LK158 LK163 LK178 LK183 LK188 LK193 LK198
LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LK08NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP
LK4 LK9 LK14 LK19 LK24 LK29 LK34 LK39 LK44 LK49 LK54 LK59 LK64 LK69 LK74 LK79 LK84 LK89 LK94 LK99 LK109 LK114 LK119 LK124 LK129 LK134 LK139 LK149 LK154 LK159 LK164 LK179 LK189 LK194 LK199
LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP
LK5 LK10 LK15 LK20 LK25 LK30 LK35 LK40 LK45 LK50 LK55 LK60 LK65 LK70 LK75 LK80 LK85 LK90 LK95 LK105 LK110 LK115 LK120 LK130 LK135 LK140 LK145 LK150 LK155 LK160 LK165 LK180 LK185 LK190 LK195 LK258
LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP
LK125
LK201 LK202 LK203 LK204 LK205 LK206 LK207 LK208 LK209 LK210 LK211 LK277 LK278 LK279 LK280 LK281 LK252 LK253 LK255 LK300 LK301 LK303 LK304 LINK20NP LK265
LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK10NP LINK15NP
LK212 LK213 LK214 LK215 LK216 LK217 LK218 LK219 LK230 LK231 LK232 LK233 LK234 LK235 LK236 LK237 LK238 LK240 LK241 LK242 LK243 LK244 LK245 LK256 LK257
LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK15NP LINK17.5NP LINK15NP
LK220 LK221 LK222 LK223 LK224 LK225 LK226 LK227 LK228 LK229 LK246 LK247 LK248 LK249 LK250 LK251 LK254
LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP LINK20NP
LK267 LK270
PD311 PD312 EL300
LINK17.5NP LINK17.5NP PD301 PD302 PD304 PD305 PD303 TARGET1 TARGET1 PD306 PD307 PD308 PD309 PD310 Y300 Y301 Spare Fuse Clip
LK268 LK271 TOOLING TOOLING TOOLING TOOLING TOOLING TOOLING TOOLING TOOLING TOOLING TOOLING TX WIRE CLIP TX WIRE CLIP
LINK17.5NP LINK15NP FUSE CLIP
LK269 LK272 C303
LINK15NP LINK17.5NP
1N0 CD
0V_DIG
PCB1
PS300 UD1
PCB
Photo Strip Update Box
USE EXCLUDE NF TO CREATE RUN OUT SHEET FOR A75
PHOTO_STRIP UPDATE_BOX
L940PB_1
USE EXCLUDE A65 TO CREATE RUN OUT SHEET FOR A65
WARNING SAFETY CRITICAL COMPONENT
REPLACE WITH IDENTICAL PART
DRAWING TITLE
A75 PLUS AMP
Filename: L940C2_1.0.SCH
Notes:
A & R Cambridge Ltd.
Pembroke Avenue
POWER SUPPLY 01_E020 TGP 12/12/01 PRODUCTION RELEASE 1.0
ECO No. INITIALS DATE DESCRIPTION OF CHANGE ISSUE
Waterbeach
Cambridge CB5 9PB Contact Engineer: Travis Pierce Contact Tel: (01223) 203 200 Printed: 11-Dec-2001 Sheet 2 of 7 DRAWING NO. L940C2
+38V_R +37V
+
C700 C714 + C706
100U EL 100V C713 100U 50V YXF LOW Z
R701 R702 R715 100N PE 100V
100N PE 100V
100R MF 100R MF 47R MF
0V_HF
0V_HF D701
0V_HF ZENER 400MW 27V
Q701
Q700
BC556B Q702
BC556B
BC556B
SPLS700
SP2_RETN_R Bot+
D703 C720 SK700B
1N4003F 470P CD
SPKSKT_G
Q704 Q703
2SA970GR 2SA970GR Bot-
C708 R725 A1
C704 100P PPW 6K8 MF D705
100P PPW R721 1N4148
470K MF SK700C
0V_LS_R
Q714
CHASS
SAP15N
Bias-R + R727 Q712 SPKSKT_G
430R MF 2SC2240GR
C723 SPLD700
R705
100N PE 100V C710 SET BIAS TO 12mV
R720 100R MF
100N PE 100V 10K MF R706 SP2_SEND_R
100R MF C717
+
OP_R
10U EL
C702 Q719 Q718 L700
R700 BC546B R711 RLY1B
BC546B
+
PWRRIGHT Top+
1K0 MF 100K MF 2U2H LAC SMALL RLY G5Z-2A-E
22U SILMIC 2
R730 C721 SK700A
R712 + C718
C703 Q706 Q707 4R7 W2 CF R731 470P CD
100K MF SPLE700
100P PPW BC546B BC546B 10U EL SPKSKT_G
+
C725 C711 R707 2R2 CF
R733 10U EL 100N PE 100V 100R MF Top-
R732 12K MF C719
12K MF R716 RV700 100N PE 100V
2K7 MF 220R PSET R708
0V_SIG 0V_LS_R
100R MF
0V_LS_R
C705 C724