HEWLETT-PACKARD 11153A Repair Manual

u MANUAL CHANGES
MODEL 11153A
1
i
TRUE RMS CONVERTER
Manual Part No. 11 153-90000
D New or Revised Item CHANGE 1: FOR 11153A SERIAL NO. (scribed on 11153A printed
circuit board) 1043A00151 AND ABOVE.
ERRATA
C Table 6-1. Add CR72 - hp- Part No. 1901 -0040 Diode: Si
Add Q27 -hp- Part No. 1853-0292 TSTR: si PNP.
Page 1-2. Replace graphs D and E with the following.
Add Q38 -hp- Part No. 1854-0071 TSTR: Si NPN 2N3391
0 R23 change to -hp- Part No. 0757-0427 1.50 kilohms
R24 change to -hp- Part No. 0698-3497 6.04 kilohms.
C t Add R67 -hp- Part No. 0698462 R: fxd flm 768 ohms 1% 118 W.
Ym
R118 change to -hp Part No. 0698-4390 66.5 ohms.
D-w
A R119 change to -hp Part No. 0698-4427 1.65 kilohms.
~a
R120 change to -hp- Part No. 0757-0433 3.32 kilohms.
R121 change to -hp- Part No. 0698-3484 6.65 kilohms.
$2
R122 change to -hp- Part No. 06984425 1.54 kilohms.
a0
:: R124 change to -hp Part No. 0698-3449 28.7 kilohms.
R125 change to -hp- Part No. 0698-3495 866 ohms.
R126 change to -hp- Part No. 0757-0414 432 ohms.
R127 change to -hp- Part No. 0698-3441 21 5 ohms.
R128 change to Not assigned.
Iltls.-.-~o2 READING IN X OF FULL SCALE
-_ __ -~--___ - - -- R129 change to -hp Part No. 2100-2968 500 ohms.
- ---_
* CR68 thru CR71 change to "CR68 thru 73".
E
I- I Paga 7-3. Add Q38 to Attenuator Amplifier as shown:
Y TO
2 0.1
Y
~ $
"U
un
:# 0.0
S To CRS.
Y *
0.M)I
IWSU .-YYOI 10 READING 50 m x OF FULL SCALE IW 150
- - __ ___ -- __ ~
rJ
To Paga 2-2. Paragraph 2-3 Step p, change Part No. 5060-5952 to
CR14
0370-0982 and change 5060-5954 to 0370-0984.
- - . __ - __ - - ._ __ R23 change to 1.50K.
D Pago 4-1. Paragraph 44, change Figure 7-1 to 7-2. Paragraph 4-5, R24 change to 6.04K. !
change gaving to having. R19 change connection at lower end to ground+instead of - 20 VF.
Page 7-5. Add Q27 circuit to Post Amplifier as shown:
Page 5-2. Change Max. Display Error on third line for VAC(DC),
1000 mV Range, 100 mV Test Signal Voltage from 15 counts to 20 --IOVF
counts.
Performance Check Card. Change test limits on third line to 98.0 mV
to 102.0 mV.
Table 6-1. C12, C13 delete asterisks and add -hp- Part No. 0160-3580
C. fxd cer 56 pF 10% 500 vdcw.
C30 cl-ange -hp- Part No. to 0160-3687. To 02lB
Under C52, change Part No. of Cover: Adj, D to 11 153-05510.
07 change -hp Part No. to 1853-0010.
Q35 change -hp- Part No. to 1853-0010.
*
R16, R17 (add R17) add -hp- Part No. 0757-0384 R: fxd flm 2Oohms
1% 1/8 W.
Change -hp- Part No. of IC Socket: 8 pin to 1200-0437.
Change -hp- Part No. of Cover: Input, B to 11 153-0551 1.
-2OVF
Change -hp- Part No. of Cover: Adj, D to 1 11 53-0551 0. To 01.
Change -hp- Part No. of Knob Any: Function (for instruments with
VDC and VAC functions) to 0370-0982.
-
Change -hp- Part No. of Knob Aay: Function (for instruments with
VDC, VAC, and Ohms functions) to 03704984. -
&Change Q26 to TSTR: Si P channel.
30 March 1971 Supplement A for 11 153-90000