8
lO
H
K
M
N
> -
CRT
,«
t
-T
a
1
^ [
ch
T] ^
L —
c
- T '
i
—
4 > m § :
|A12
J3r
<$>EE1]
t CHI A- TENUA70R ASSEMBLY
n
, v = L
j 10
CHI OVL
CHI OVL BlAS<
CHI PRB
Y
'i
✓
s
>
w ^ n
WPIB
WBIR
<s>
<s> <s>
TT.
WFOO
SEE
LIST
A I3
TERMINATION ASSEMBLY
A 4
readout
board
<9> ROM EN
v
+svd-l>
<S> FORCE E0CH^4
GNDR-=*
W4II
U * ' RIBBON
P4-II fzt>
PIN S
CH2 A7~ENUAT0R ASSEMBLY
I W ll
l l
J 11
CH2 OVL
CH2 OVL BIAS<
C H I PRB
J100|
CHI PO T E R M -j^)-.
CHI P O - ~ > > - T ,00A
GND-|>
G N D-A
j CH2 POSCFROM BUF)-£>
^
'
CHI POSCTO BUF)-f4
GND-£»
GND-f>
CH2
|PI00D
< $ > [ 2 3 ( p :
c Y
<§> ICALI BRATOrI (
A 8 ,
SCALE
LUM NATION
SO.
2
fl SCALE ILLUMINATION^
~ f ----[ 2 r lS V
^
SCALE
ILLUM.
—
2
1
P lU
READOUT
3 '
INTENSITY
WII3
I
t r a c e
I ROTATION
\
FOCUS
R352
I
i n t e n s i t y
!
.
M l
<$> HORIZ OUT— >
J ill
\ SEE
/ < S >
J II2
; ^ i G <§>
GND
J 113
+ 5V<§>
ROI
-5 V
J114
“ 15V
TRACE ROT ■
+ 15V
J115
GND
x v
FOCUS ^
+I5V
J I Us
GND
INTENSITY'
l3 h~ 5V
CH2 PO TERVV1^ :
J 1011
'STSCFROM B U F )^ > -|
___
GND-f>
PIOIA
ATSCTO BUF)-^>-J
GND^U
___
G N D -r^
§ T 5 r o BuF)-2^>-|
G N D -A
PIOIB
BTStFROM B U F ) - |» J
G N D ^>
S S A -^
‘
.
J1Q?I
b h o
^ >
g n d
4 »
AHO-|>
NO PIN-“->
^lthpi02D
JlO B,
B AUXTRG-f>:
J I0 4 |
a
B
g
4 ^
. GNP-f»
S
s g
4 >
GND-^>
<8>
SEE
SEE
J 5 II
L IS T
J5I2
l i s t
P5II I2S PINS]
P5I2|2S PINSI
Al
PULL ALT
y
=
j
S
h
B
A
JfcH
SEE
LIST
JloO|
C 0 L 4 <4S
ROW 3 ^ 2
1
FRONT PANEL BOARD
Plcll
[5
P
I
N
s
Pfc5l
10
2fe/ RIBBON
Pb51
IE
RIB- W5I2 I k , 'RIBBON
BON
JIOS
<§> CH20UT
GND
<§>WI01
<§>WI08
3
1 COAX ,
1—
;
PlOfe
[C H T o u f!
PICT
'
[
e x t
2 AXIS[
PI08
1
^ J 1 [
b
“
g a t e
1
§ )J 8 | A GATE |
A ~ 7 FRONT PANEL
M
/
v a r ia b l e
board
J25I
UST
Jfcll
SEE
LIST
3 4 PINsJ _ A
P I2 IIT P I
n
ITI PI2.1l 8 PINS
JZ32A|P232|J232B
J23! B IP 23IIJ23IA
>OpT!ONS
A
m
H
^
501
NOCAL— >
J 5 p ll
-.D .w s J
T l
T0
SEE U S t \ I ^ / OPTI0N&
J503I
D—>
AB
CONTROL BOARD
_________ I
| J20I
t o
r ^ r +5v
PROBE J * T + I5V <®>
POWER I 44-GND
n
/
noTinki I ; 4
w< ---- - ^ ------ ,3Y
|j202
PROBE J T ^ -+I5V
POWER
GND
OPTION | ^ ± - | 5 V
IJ20B
f
— 15V
I 4 -5V
POWER J < rr+ 5 V xv
TO < X ± + |5V<« >
o p tio n s ! | £ q n d
1 ^ + 4 2 V
+5Vp—« 1 » — H5Vj)
+RECTIFIED LINE - « 1 » - + RECTIFIED LINE
LINE^N^
+ S V c - < f y - > ^ + S V D <§>HNE CAP C O M M O N -« -|-» - LINE CAP COM MON <§>
< $ >
G N D - « -
- 8Vt
in b f k
- < C ^ > > - ~ 8V
u
NREG
J233Aj r233| J233B
F B - < £ J > > -F B
LINE U P - < f 4 - » - L IN E UP
+ 4 2 V UNREG-«
» - + 42V u n r e q
<S>
g n d
K < 4 ^ > -
g n d
<§
+B7V| in g F ^—
«
» ~ + 8T V u n r e g
J2B4A |P234-| J234B
- 1
svun
RE
q
- « -
y
-> > - “ I SV
um
REG
- BVi j ugcg—
- 5VyuRCQ
<^S>
GND—« v - ^>-GND
+ 8VjNREG^<
+ ^ VUNREG
+ 1 SVUNREg - « _ 4 > - + ISVyNREQ
-RECTIFIED L I N E - « ---- » ---- RECTIFIED LINE
A O INVERTER
r O
BOARD
JS03
g n d
4 > ^
+5^>-r>
G N D -i»
J302J
5.5VAC-U
<$> GND-|>
5.5VAC-2>
J2Dt*
LINE *7
VOLTriOE |
^?20(
d
vP207
j
S
>OPTIONS
J3UI
K
G W
't |5VU«eis
A 2
REGULATOR BOARD
X V 1301
A I /N FAN MOTOR
A I U
BOARD
+ ^M
inxes
GND
P30I 3- ' w501
2 4 4 5
IN TE R C O N N EC TIO N S
<|>
T
Содержание 2445
Страница 1: ...Tektronix 2445 OSCILLOSCOPE SERVICE INSTRUCTION MANUAL ...
Страница 11: ...2445 Service 3829 01 The 2445 Oscilloscope ...
Страница 44: ...Theory of Operation 2445 Service 3831 10A Figure 3 1 Block diagram ...
Страница 45: ...Theory of Operation 2445 Service 3831 10B Figure 3 1 Block diagram cont 3 3 ...
Страница 210: ...3829 58 Figure 9 4 2445 block diagram ...
Страница 214: ......
Страница 217: ......
Страница 219: ...2445 382 72 ...
Страница 222: ...2445 ...
Страница 231: ...A 1 t C t t F t G t H t ...
Страница 233: ......
Страница 236: ......
Страница 238: ...2445 392 1 75 ...
Страница 244: ......
Страница 247: ...A 1 C _____ D E F G H J 2445 3811 74 ...
Страница 248: ...1 2 3 4 5 6 7 8 9 i o 2445 DISPLAY SEQUENCER TRIG GERING A4B SWEEPS ...
Страница 253: ......
Страница 263: ... 0 2445 J8 i S ...
Страница 264: ...1 2 3 4 5 6 7 i 8 I i 9 10 2445 READOUT ...
Страница 275: ......
Страница 278: ......
Страница 281: ......
Страница 283: ... 8VJNR EG 3S 5 fROM P232 5 10 A 15VUNREG 8S F R O Mn i 2445 3 0 2 S 8 I ...
Страница 286: ...2445 3823 82 ...
Страница 290: ...B H le w o q 87V T S o I R v n i U1 R1873 PARTIAL A9 HIGH VOLTAGE BOARD 2445 ...
Страница 299: ...2445 Service DAC REF A5 CONTROL ADJUSTMENT LOCATIONS 3 ...
Страница 300: ......
Страница 301: ...J119 O A A Z fio rv ic A J118 VERT READOUT JITTER R618 i x n n t o i n R801 X10 GAIN R850 3829 71 ...
Страница 304: ...2 R E TU R N T O 1 ...
Страница 305: ...ERROR MESSAGE DIAGNOSTICS ...
Страница 306: ...ERROR MESSAGE DIAGNOSTICS ...
Страница 307: ...O A A C t rnra g i tiw c t 3829 89 ...
Страница 308: ...RETURN TO ...
Страница 309: ...FRONT PANEL TROUBLESHOOTING ...
Страница 310: ...FRONT PANEL TROUBLESHOOTING ...
Страница 311: ...2445 Service 3829 90 ...
Страница 316: ...R E TU R N T O v 1 y ...
Страница 317: ...SWEEP TROUBLESHOOTING PROCEDURE ...
Страница 318: ...2445 Service NOTE 3 56V IS M E A S U R E D A S 1 44V W ITH R ESPEC T TO TH E 5V SUPPLY 3829 95 ...
Страница 323: ......
Страница 324: ...2445 Service 3829 85 ...
Страница 325: ......
Страница 326: ... KERNEL NOP DIAGNOSTIC PROCEDURE ...
Страница 327: ...10 POWER SUPPLY TROUBLESHOOTING PROCEDURE 3829 94 ...
Страница 330: ......
Страница 334: ...2445 Service REGULATOR TROUBLESHOOTING PROCEDURE 3829 93 ...
Страница 338: ......
Страница 346: ...12 2445 SERVICE ...
Страница 347: ...2445 SERVICE ...
Страница 348: ...2445 SERVICE ...