7623
Page 3
of
7
ADD:
Table 2-9
as follows:
TABLE 2-9
VARIABLE PERSISTENCE
MODE VOLTAGE LEVELS
Test Points
Tolerance
Bi
Stable
Mesh (adjustable by
Variable Persistence OP LEVEL
R1350)
-12
V to +8
V
High
Speed Mesh
Approximately
+100 V
Collector Mesh
Approximately
+100 V
EGA
.5s duration pulse rising
from
a level
of
approxi
20 V to approxi
mately
+74 V
Page
3-19
Fig. 3-16
REPLACE
:
Q225
and
Q236 labels with Q236A and Q236B.
Page 3-24
Fig.
3-21
CHANGE
:
CRT
anode
voltage from +12 kV to +7 kV
CHANGE
:
CRT
cathode
voltage from -2.96 kV to -1.475 kV
ELECTRICAL
PARTS LIST CORRECTIONS
ADD:
CR1663
152-0141-02
Silicon,
1N4152
CHANGE:
L425
value to read;
nanohenry
ADD:
R1634
315-0221-00
220
Ω, 1/4 W, 5%
CHANGE
:
U1822
circuit number to U1882 (board is marked U1882)
SCHEMATIC DIAGRAM
AND BOARD PHOTO CORRECTIONS
Diagram
4
CHANGE
:
L426
value
to
150 nH
Diagram 5
CHANGE:
Q533
to Q553
C5/1273
Summary of Contents for 7623
Page 1: ...MANUAL 7623 R7623 STORAGE OSCILLOSCOPE SERVICE MANUFACTURERS OF CATHODE RAY OSCILLOSCOPES ...
Page 51: ...Fig 3 2 Block diagram of Logic circuit Circuit Description 7623 R 7623 Service ...
Page 72: ...W NJ 00 Fifl 3 22 Low Voltage Power Supply detailed block diagram ...
Page 73: ...Circuit Description 7623 R 7623 Service ...
Page 74: ...CO NJ CD Fig 3 22 Low Voltage Power Supply detailed block diagram cont ...
Page 75: ...Circuit Description 7623 R 7623 Service ...
Page 97: ...Circuit Description 7623 R7623 Service 3 51 ...
Page 98: ...Circuit Description 7623 R7623 Service Fig 3 39 Output Pulses for the Storage Circuits 3 52 ...
Page 103: ...Circuit Description 7623 R7623 Service 3 57 ...
Page 108: ... Ç À Fig 4 2 Location of circuit boards in the 7623 ...
Page 109: ...Fig 4 3 Location of circuit boards in the R7623 Maintenance 7623 R 7623 Service ...
Page 113: ...Maintenance 7623 R7623 Service Fig 4 6 Circuit Isolation Troubleshooting Chart 4 9 ...
Page 165: ...7623 BLOCK DIAGRAM ...
Page 166: ...7623 R7623 Service Front of Board ...
Page 167: ......
Page 168: ...FL ...
Page 169: ......
Page 173: ...7623 Logic ...
Page 175: ...Vertical Interface A4 ...
Page 178: ...Vertical Interface ...
Page 180: ...Vertical Amp A5 ...
Page 184: ...Horizontal Amp A6 ...
Page 186: ...7623 TO P450 VERT AMP 3 HORIZONTAL AMPLIFIER ...
Page 188: ...Output Signals A7 ...
Page 190: ...FROM 7G23 Output Signals g ...
Page 195: ...FROM LV POWER SUPPLY 7623 CRT CIRCUIT ...
Page 197: ......
Page 200: ......
Page 202: ...Storage Output A14 ...
Page 204: ......
Page 205: ...7623 R7623 Service Fig 6 14 A15 Cal Storage circuit board ...
Page 208: ......
Page 209: ...7623 R7623 Service Fig 6 15 A16 Readout System circuit board ...
Page 213: ......
Page 242: ...7623 R7623 OSCILLOSCOPE b ...
Page 243: ...151 ...
Page 246: ...20 ...
Page 247: ...7623 R7623 OSCILLOSCOPE 112 ...