
Model 428B
Table 6-1. Replaceable Parts (Cont'd)
REFERENCE
DESIGNATOR
-hp-
PART NO.
TQ
DESCRIPTION
MFR.
MFR. PART NO.
T6
T7
V1, V2
V3, V4
V5
V6, V7
V8
V9
V10
W1
9100-1486
9100-3228
1923-0017
1923-0017
1932-0022
5080-0041
1921-0010
1923-0021
8120-1348
428A-1C
428A-21A
428A-83A
428B-2A
428B-2R
428B-44
0403-0004
1440-0002
1490-0015
5040-0616
00428-66501
5020-0653
00428-26501
0330-0029
8520-0017
1410-0052
2110-0269
0510-0748
1205-0011
0370-0822
0370-0031
0370-0035
0370-0064
0370-0823
0370-0824
0370-0825
0370-0826
7121-0192
2950-0034
1200-0062
1200-0083
3100-0268
00428-90003
1
1
3
2
1
1
1
1
1
1
1
1
1
1
4
1
1
2
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
4
4
1
1
Transformer: head drive
Transformer: power
Tube: electron 6AH6
Not assigned
Tube: electron 6AH6
Tube: electron 6DJ8
Tube: electron selected 12AU7
Tube: electron 12B4A miniature 9 pin
Tube: electron 6AU6 miniature 7 pin
Cable: AC power
MISCELLANEOUS
Dust Cover (rack only)
Probe Assembly (see Figure 6-1 )
Escutcheon
Panel (cabinet only)
Panel (rack only)
Assembly: cabinet
Bumper: rubber
Handle: leather
Bail: cabinet tilt
Detent: cabinet bail
Assembly: P .C. Board
Bezel
Board: P.C.
Boot (rack only)
Brush: nylon
Bushing: potentiometer
Fuse: clip
Fuse: holder
Heat sink
Knob: round, brown
Knob: 1" dia. black conc.
Knob: bar 1" dia. black
Knob: 3/4" dia. red w/arrow
Knob: red (for R63)
Knob: orange (for R69)
Knob: yellow (for R46)
Knob: green (for R98)
Nameplate (cabinet only)
Nut: hexagonal
Socket: 9 pin miniature tube
Socket: 7 pin miniature tube
Switch: rotary
Operating and Service Manual
-hp
-hp
33173
33173
73445
-hp
33173
33173
-hp
-hp
-hp
-hp
-hp
-hp
-hp-
OOOMM
0000Z
OOLAG
-hp
-hp
-hp
-hp
76545
OOLAH
32016
91506
75915
98978
-hp
-hp
-hp
-hp
-hp
-hp
-hp
-hp
91345
91961
71785
91662
76854
-hp
6AH6
6AH6
obd
12B4A
6AU6A
obd
obd
obd
62
obd
obd
obd
6008-32CN
357002
TXBF-032-025B
obd
obd
obd
121-51-11-060
05-0730-02
216481-HZ
obd
27
Содержание 428B
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Страница 11: ...Model 428B Figure 3 1 Measurement Procedures 4 ...
Страница 15: ...Model 428B Figure 4 1 Block Diagram 8 ...
Страница 27: ...Model 428B Figure 5 9 Detailed Troubleshooting Tree 20 ...
Страница 29: ...Model 428B 22 ...
Страница 35: ...Model 428B Figure 6 1 Parts Breakdown current probe 28 ...
Страница 37: ...Model 428B Figure 7 1 Block Diagram 30 ...
Страница 39: ...Model 428B Figure 7 5 Power Supply 32 ...
Страница 40: ...Model 428B Figure 7 6 Block Diagram 33 ...
Страница 44: ...Model 428B Figure A 1 428B Side Views 37 ...
Страница 45: ...Model 428B Figure A 2 Backdating Schematics for 428B 38 ...
Страница 46: ...Model 428B Figure A 3 Backdating Schematics for 428B 39 ...
Страница 52: ...Model 428B 00428 90003 PRINTED IN U S A 45 ...