Tektronix 2465B - Page 432

2465B/2467B Service
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Figure 10-10. A4—Readout board (SN B049999 & Below).
®
6863-24
Static Sensitive Devices
See Maintenance Section
COMPONENT NUMBER EXAMPLE
Assembly
Component Number
A23A2R1234
"n—"-T-"—H—
J
I ! Schematic
, , -*-
J
* ■—- Circuit
Number Subassembty
Numbs' (if used!
Number
jnted components have no Assembly Number
enc of Replaceable Electrical Parts List
A4 READOUT (SN B049999 & Below)
CIRCUIT
NUMBER
C2830
C2835
C2851
C2855
C2860
C2885
C2901
C2911
C2912
C2913
C2926
C2940
C2950
C2960
C2970
C2980
C2990
J401
J402
R2805
R2B30
R2841
R2B42
R2843
R2844
R2850
R2901
R2902
R2903
R2905
SCHEM
NUMBER
12
12
12
12
12
12
12
7
12
12
12
12
12
12
12
12
12
7
7
12
7
7
7
7
7
7
7
7
7
7
A4—READOUT BOARD
(SN B049999 & BELOW)
CIRCUIT
NUMBER
R2910
R2911
R2912
R2913
R2914
R2915
R2916
R2917
R2918
R2919
R2920
R2921
R2922
R2923
R2924
R2925
R2926
R2927
R2928
R2929
R2930
R2931
R2932
R2933
R2934
R2940
R2945
R2975
R2985
U2800
U2800
SCHEM
NUMBER
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
12
CIRCUIT
NUMBER
U2805
U2805
U2810
U2810
U2820
U2820
U2830
U2830
U2835
U2835
U2850
U2850
U2856
U2855
U2860
U2860
U2865
U2866
U2870
U2870
U2880
U2880
U2885
U2885
U2890
U2890
U2900
U2900
U2905
U2905
U2910
U2910
SCHEM
NUMBER
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
CIRCUIT
NUMBER
U2920
U2920
U2930
U2930
U2936
U2935
U2940
U2940
U2950
U2950
U2960
U2960
U2965
U2965
U2970
U2970
U2980
U2980
U2985
U2985
U2990
U2990
U2995
U2995
VR2805
VR2925
W411
W411
W2851
SCHEM
NUMBER
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
7
12
12
7
7
12
7
TEST WAVEFORM SETUP INFORMATION
The numbered waveforms below were obtained at the test points indicated on the accompanying schematic diagram and
board dolly. The waveforms are representative of signals that may be expected at the associated points when the indicated
setup conditions are observed.
+ 1V-
W/READ0UT ON, SIGNAL CONSTANTLY CHANGES
SAME AS 49
+3V- n^_^r
W/READOUT ON, SIGNAL CONSTANTLY CHANGES
SAME AS 48
ST" 30
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