Agilent Technologies E4350B, E4351B service manual Differences, 3. Test Points

Chapter 6 Differences

Test Points

Test Point

Table 6-3. Test Points

SignalMeasurement and Conditions A1 Main Board (Sheets 1-4); A5 DSP Board

Connect meter or scope common to Test Point (TP) 9 when taking measurements at Test Points 10 through 46

TP9 R703-3

TP10 F703

TP11 R704

TP12 Q700 (heat sink)

TP13 R708

TP14 U701-2

TP15 U702-3

TP16 D701 anode

TP17 U603-5

TP18 U603-7

TP19 U602-16

TP20 VR602 anode

TP21 D606 anode

TP24 R421

TP25 R623

Secondary common (sheet 1)

+5V Sec Bias (sheet 1)

+15 Sec Bias (sheet 1)

+24V (sheet 1)

-15V Sec Bias (sheet 1)

-25V (sheet 1)

Fan speed control (sheet 1)

Fan speed control (sheet 1)

PCLR* (DSP Board) (sheet 3)

Shutdown circuit (sheet 3)

Shutdown circuit (sheet 3)

+9V Gated (sheet 3)

-15V Gated(sheet 3)

CC_Prog (sheet 2)

CV_Prog (sheet 2)

R703-3 (RmINB)

+5V +/- 0.2V

+15 +/- 0.6V

+21V to +27V (1V p-p ripple)

-15V +/- 1V

-22V to –28V (300mV p-p ripple)

+3V with no load connected and ambient temperature

25C.

+2.95V with no load connected and ambient temperature

25C.

Goes low for approximately 40mS at power on, then goes high (5V).

+8.69V with output on

+0.7V with output off, +15.2V with output on.

+9V

-14.2V

-4.2V (approximate) with full-scale current programmed.

-4.3V (approximate) with full-scale voltage programmed.

Service Addendum 43