Performance Verification
371B Service Manual
5-41
If the CURSOR readout is within the given limits, go on to the next
procedure.
AdjustingVertical Balance.
. See “Test Point and Adjustment Location Pullouts 1 and 2” in Chapter 8
for the location of adjustment R645 and R146.
2. Change the following 371B settings:
3. ADJUST –W.LVL R955 on A5 Display Control board to minimize deviation
from 100.0 mV for NPN mode and from –100 mV for PNP mode while
switching COLLECTOR SUPPLY POLARITY.
Table 5-6: Vertical Zero Limits
PEAK POWER WATTS
Setting
VERTICAL setting
VERTICAL CURSOR
Readout (
)
m
m
m
m
m
m
4. Change the positive lead of the digital multimeter from TP 70 (VO) to
TP 648 (VD).
5. ADJUST Y-MAG R645 on the A5 Digital Control board to minimize the
deviation from –1.00 V for NPN mode and from +1.000 V for PNP mode
while switching COLLECTOR SUPPLY POLARITY.
6. Remove the voltmeter leads.
7. ADJUST V BAL adjustment R146 on the A10 Sense board for minimum
spot shift while VERTICAL CURRENT/DIV is alternately set to 5
m
A/DIV
and 10
m
A/DIV.
Summary of Contents for 371B
Page 4: ......
Page 14: ...Service Safety Summary 371B Service Manual...
Page 18: ...Preface 371B Service Manual...
Page 21: ...Specifications...
Page 22: ......
Page 24: ...Product Overview 371B Service Manual...
Page 38: ...Specifications 371B Service Manual...
Page 39: ...General Information...
Page 40: ......
Page 58: ...General Information 371B Service Manual...
Page 59: ...Theory of Operation...
Page 60: ......
Page 62: ...Theory of Operation 3 2 371B Service Manual Figure 3 1 371B Block Diagram...
Page 71: ...Maintenance...
Page 72: ......
Page 101: ...Performance Verification...
Page 102: ......
Page 220: ...Performance Verification 371B Service Manual...
Page 221: ...Options...
Page 222: ......
Page 226: ...Options and Accessories 371B Service Manual...
Page 227: ...Electrical Parts List...
Page 228: ......
Page 235: ...Diagrams...
Page 236: ......
Page 237: ...8 1 371B Service Manual Circuit Board Interconnections 2 2...
Page 238: ...371B Service Manual...
Page 239: ...8 3 371B Service Manual Circuit Board Interconnections 2 2...
Page 240: ...371B Service Manual...
Page 241: ...8 5 371B Service Manual Test Point Adjustment Locations 1...
Page 242: ...8 6 371B Service Manual Test Point Adjustment Locations 2...
Page 243: ...8 7 371B Service Manual Test Point Adjustment Locations 2...
Page 244: ...8 8 371B Service Manual Test Point Adjustment Locations 3...
Page 245: ...8 9 371B Service Manual Troubleshooting Tree...
Page 246: ...8 10 371B Service Manual Troubleshooting Tree Cont...
Page 247: ...8 11 371B Service Manual Troubleshooting Tree Cont...
Page 248: ...371B Service Manual...
Page 249: ...Mechanical Parts List...
Page 250: ......
Page 259: ...9 9 371B Service Manual Figure 9 1 Cabinet Rear 97 96 68...
Page 260: ...371B Service Manual...
Page 261: ...9 11 371B Service Manual Figure 9 2 Display Front 73...
Page 262: ...371B Service Manual...
Page 267: ...9 17 371B Service Manual Figure 9 3 Chassis Ciircuit Board...
Page 268: ...371B Service Manual...
Page 269: ...9 19 371B Service Manual Figure 9 4 Power Supply...
Page 270: ...371B Service Manual...
Page 276: ...Mechanical Parts List 371B Service Manual...
Page 277: ...9 27 371B Service Manual Figure 9 5 Test Fixture 78 78 REV MAR 96 75 72...
Page 278: ...371B Service Manual...
Page 279: ...9 29 371B Service Manual Figure 9 6 Front Porch...
Page 280: ...371B Service Manual...
Page 287: ...371B Service Manual...
Page 288: ...371B Service Manual...
Page 289: ...371B Service Manual 6 5...
Page 290: ...371B Service Manual...