Maintenance— 2230 Service
If there were power-up faults:
Display the power-up faults on U4119.
Display the power-up faults on the crt without
maskable interrupt support:
Until a Menu button is changed.
Start normal instrument operation.
Diagnostic Tests
PU TEST. At power-up, this kernel test does a quick
check of the instruments dynamic RAM (random access
memory), ROM (read only memory), and NMI (non
maskable interrupt) circuitry. If no errors are found,
additional diagnostic tests are run.
If errors are found, their code is displayed (at power-up
before NMI or Ml go HI and’ before other tests are run)
repeatedly, for approximately 2 sec, on U4113 and U4119
(see Table 6-13). The instrument also tries to display the
errors on the crt as a four digit hexadecimal number:
PU : ROM/RAM/NMI : <hex_value>
CPU : check Ml by enabling Mis (U9136 pin 8)
Generate fault message.
Pulse FRAME LO (U9105.10, U9208.7)
Enable Mis
DSP : set INTR (U9208 pin 8) TRUE
CPU : if time is too great
Generate fault messages
Disable Mis
CPU : pulse INT-RST LO (U9105 pin 11, U9208 pin 10)
DSP : set INTR (U9208 pin 6) FALSE
CPU : check Ml by enabling Mis (U9103G pin 8)
Generate fault messages
A fault generates one or more of the following error
messages:
M l: line stuck high
M l: Display controller: TIMEOUT
M l: Display controller: unable to reset mi
For example: if ROM U9110, RAM U9232 and RAM
SYS_ROM„n. SYS_ROM_n checks each ROM by
U9231 fail, the instrument will:
calculating and then comparing its checksum to what is
stored in the ROM.
1. Flash failure codes on U4113 and U4119:
PIN 12 . . . PIN 19
0100
0010
1000
0001
1010
0101
If an error is found, the calculated value and the value
expected are displayed on the crt:
SYS_ROM„n : calculated_value < > expected_value
2.
If possible, display error message on the crt (see
Figure 6-6):
NOTE
More than one bad RAM usually means that some
thing else is causing the problem.
Ml. The maskable interrupt (Ml) diagnostic creates and
displays a single dark vector display (low resolution). Then
a INT-RST (U9105 pin 11) is issued followed by a FRAME
(U9105 pin 10). The Ml (INTR at U9111 pin 18) should
then go TRUE until another INT-RST is generated. All
other Ml sources are tested inherently by normal
operation. The test sequence is:
Microprocessor (CPU) : pulse INT-RST LO (U9105 pin
11, U9208 pin 10)
DSP : set INTR (U9208 pin 6) FALSE
7 • ■ f RES
“ T O
S M
TCn*
ENU K E i
tr A I
IS T
L u n
0 ' C
i b
d n t
; :
n u e
PU
' (a
: "f
i d <
TOM7
*n y
RAM
O t h
/NM-
BP 3
[ @
; r r c
"OOA
IP ( C
2
e t e c t e J ) ,.
-
-
OT
4 9 9 9 -1 6
6-21
Figure 6-6. PU error display.
Содержание 2230
Страница 12: ...2230 Service X The 2230 Digital Storage Oscilloscope 4998 01 ...
Страница 32: ...Operating Information 2230 Service 4998 04 Figure 2 4 Power and display controls and power on indicator 2 5 ...
Страница 33: ...Operating Information 2230 Service Figure 2 5 Vertical controls and connectors 2 6 ...
Страница 48: ...Operating Information 2230 Service Figure 2 11 X Y Plotter interfacing ...
Страница 56: ...Theory of Operation 2230 Service 4999 01 3 2 Figure 3 1 Simplified block diagram ...
Страница 68: ...Operating Information 2230 Service Figure 2 11 X Y Plotter interfacing ...
Страница 76: ...Theory of Operation 2230 Service 4999 01 3 2 Figure 3 1 Simplified block diagram ...
Страница 82: ...Theory of Operation 2230 Service 510 499 9 02 Figure 3 2 Block diagram of the Channel 1 Attenuator circuit 3 8 ...
Страница 98: ...Theory of Operation 2230 Service 499 9 06 Figure 3 6 Horizontal Amplifier block diagram 3 24 ...
Страница 111: ...Theory of Operation 2230 Service 3 37 Figure 3 9 Acquisition Memory timing ...
Страница 190: ...Maintenance 2230 Service 999 14 Figure 6 3 Isolated kernel timing 6 9 ...
Страница 218: ...Maintenance 2230 Service 4999 37 Figure 6 7 Location of screws and spacers on the Storage circuit board 6 37 ...
Страница 329: ...PUT Figure 9 2 S em ico n d u cto r lea d co n fig u ratio n s ...
Страница 332: ...2230Service CHASSIS MOUNTED PARTS ...
Страница 334: ...A14 CH 1 LOGIC BOARD ...
Страница 337: ......
Страница 344: ...u sr z z o 1 ...
Страница 347: ...i n 5 a O Q q o u S a o h UJ s a b c d e f g h j k l m n ...
Страница 352: ......
Страница 355: ...WAVEFORMS FOR DIAGRAM 5 4999 83 ...
Страница 358: ...I W L U O U rc a 4 2 s ...
Страница 361: ...WAVEFORMS FOR DIAGRAM 6 S 84 ...
Страница 362: ...2230 Service TEST SCOPE TRIGGERED ON U665 PIN 8 FOR WAVEFORMS 31 THROUGH 33 ...
Страница 365: ... I I ...
Страница 366: ...A 1 6 S W E E P R EFEREN CE BOARD FIG 9 17 2230 Service Figure 9 17 A16 Sweep Reference board ...
Страница 369: ... o 0 UJU sa eg aiu c u J in su eg 5 C sis n g e s o N QO ...
Страница 371: ...Static Sensitive Devices See Maintenance Section CM I rv CD o 2230 Service ...
Страница 378: ......
Страница 384: ... I I c o C u o a 5 r O tD v j If 3 IV if I I ci if 5 3 I ...
Страница 386: ......
Страница 388: ...H K L M N 7 8 8 2 2 3 0 INPUT OUTFUT WIRING INTERCONNECT ...
Страница 392: ...W A V E F O R M S F O R D IA G R A M 14 ...
Страница 393: ...2230Service 0 0 d s t 4 9 9 9 9 5 ...
Страница 394: ...2230 Service TEST SCOPE TRIGGERED ON U911 PIN 21 FOR WAVEFORMS 64 THROUGH 69 4999 92 ...
Страница 396: ... ...
Страница 397: ...WAVEFORMS FOR DIAGRAM 15 TEST SCOPE TRIGGERED ON U9111 PIN 21 FOR WAVEFORMS 70 THROUGH 77 ...
Страница 399: ......
Страница 403: ......
Страница 404: ......
Страница 405: ......
Страница 406: ...2230 Service n CD O O i 0 s a f s s o m O F ig u re 9 5 D e ta ile d S to ra g e b lo c k diagram 4999 22 ...
Страница 409: ......
Страница 415: ...IMF PU TPR A IR TM FQ U I W A V E F O R M SF O RO IA G R A M1 5 W A V E F O R M SF O R i ...
Страница 417: ...4999 9S ...
Страница 419: ...i s 5 0 C C p F 2 CC p 2 a u 4 I s c c O 2 e e o 5 a o 5 i 2 i f 2 E C 52 ...
Страница 421: ...TEST SCOPE TRIGGERED ON U4105 PIN 9 FOR WAVEFORMS 121 AND 122 TEST SCOPE TRIGGERED ON U4227 PIN 10 i 4999 97 ...
Страница 423: ...W A V E F O R M SF O RD IA G R A M1 8 O c n ...
Страница 424: ...Figure 9 22 A11A1 Input Output board ...
Страница 427: ...WAVEFORMS FOR DIAGRAM 19 TEST SCOPE TRIGGERED ON U6103 PIN 1 FOR WAVEFORMS 126 AND 127 4999 98 ...
Страница 430: ...Figure 9 23 A11A2 Vector Generator board ...
Страница 434: ...49 9 9 tOO ...
Страница 436: ......
Страница 437: ...22 3 0 S ervice W A V E F O R M S F O R D I A G R A M 2 1 m f n h ...
Страница 442: ...WAVEFORMS FOR DIAGRAM 22 4999 78 ...
Страница 443: ...XY PLOTTER BOARD DIAGRAM 22 See Parts List for serial number ranges ...
Страница 444: ... u i o IO U J J i o D U I 1 t ir u j t O 0 X I c a a 3 4 2230 4999 71 REV FE8 1987 XY PLOTTER BOARD 22 ...
Страница 447: ...A21 RS 232 OPTION BOARD Flfi A 9 K 01 01 W M ...
Страница 450: ......
Страница 452: ...COMPONENT NUMBER EXAMPLE ...
Страница 455: ...r n n i i i i n O T IA ll D A A o n XY PLOTTER BOARD P in A23 OPTION MEMORY BOARD FIG 9 27 A22 GPIB OPTION BOARD ...
Страница 459: ...A16 SWEEP REFERENCE ADJUSTMENT LOCATION ...
Страница 467: ...2230 Service ...
Страница 468: ......
Страница 474: ......
Страница 475: ...2230 Service ...
Страница 476: ...2230 Service ...
Страница 477: ... D ...
Страница 483: ...2230 Service ...