Sequential Circuits Prophet-5 Service Manual - Audiofanzine
Sequential Circuits Prophet-5 Service Manual - Audiofanzine Sequential Circuits Prophet-5 Service Manual - Audiofanzine
I 111-2 REVISION 3.0 MEMORY TESTRev 3.0 Serial Numbers:1300-2285, 2^24-2^51, 2^56, 2^66, 2^77Software: V.8.0 (1300-1309, 1311, 1312, 131^-1321, 132^, 1328)V.8.1 (1310, 1313, 1321-1323, 1325-1327, 1329-2285,2424-2451, 2456, 2466, 2477)NOTE: Following the appearance of a few Rev 3.0 Prophets which spontaneously putthemselves into Edit Mode, the Rev 3.0 has been updated to (post-production) V.8.2,available as a 3-PROM set, SCI #2-984.Rev 3.0 Prophet-5s are tested with a special 2708 EPROM which can be ordered as SCI//Z-953.NOTE. Check that the RECORD switch is ENABLEd, and that user's programs arestored on cassette since the memory tests erase the NV RAM contents.1. Switch power off and insert PROM in PROM location (U312). (If available, insertfactory program PROM PROG5.5 into PROM 1 (U313) location. The test will load NVRAM with programs during section 3).2. Switch power on. The test will start, indicating the memory section in thePROGRAM display:1 = Scratchpad RAM2 = NV RAM3 = NV RAM load4 = 8253 Timer= End of test. No failures.i3. If a test fails, the program halts and displays the section number for the problemarea. Further tests are not executed until the problem is fixed-11-3 REVISION 3.1 MEMORY TESTRev 3.1 Serial Numbers 2286-2423Software:V.9.1Rev 3.1 has the memory test built-in but a simple hardware modification may berequired before itcan be enabled.NOTE. Check that the RECORD switch is ENABLEd, and that user's programs arestored on cassette since the memory tests erase the NV RAM contents.1. First, switch power off. The RAM test program is contained in the standard 2716software, V.9.1. (NV load similar to Rev 3.0 is provided.)2. If necessary, on foil-side (or, bottom) of PCB 3, cut trace between U324-10 andground.3. See SD342 in Section 10. If not installed, connect R3155 lOOK pull-down resistorfrom U324-10 to ground at U324-8.*-^.U-if TM1000D.2 10/81
1 J^. To vector to the internal test program, jumper TP305 (U32if-10) to +5V then switchpower on. (The test point location is shown on PP351, Section 10). The test will start,indicating the memory section in the PROGRAM display:1 = Scratchpad RAM2 := NV RAM3 = NV RAM load^ = 82^3 Timer= End of test. No failures.5. If a test fails, the program halts and displays the section number for the problemarea. Further tests are not executed until the problem is fixed.11-^ REVISION 3.2 MEMORY TESTAll Rev 3.2 Prophet-5s have the memory test built-in.Rev 3.2Software:2^52-2^55, 2^57-2^65, 2467-2^76, 2^78 and upV.9.2Software level V.9.2 has the memory test only. Later-production instruments havesoftware version V.9.3 which prefaces the memory test with a basic CPU test. Thisroutine doesn't use RAM so is useful for seeing if the CPU itself is working andaccessing PROM.^NOTE. Check that the RECORD switch is ENABLEd, and that user's programs arestored on cassette or via the Model 1003 Polyphonic Sequencer since the memorv testserase the NV RAM-^contents.1. First, switch power off.2. To vector to the internal test program, jumper TP30^ MEM TEST to +5V then switchpower on.3. If software is V.9.3, the Prophet will sequentially flash its LEDs (in the order inwhich they are wired in the matrix). To exit this mode and start the regular RAM test,press TUNE.^. The memory test will start, indicating the memory section in the PROGRAM display:1 = Scratchpad RAM2 = NV RAM3 = PROM^ = 8253 Timer= End of test. No failures,3. If a test fails, the program halts and displays the section number for the problemarea. Further tests are not executed until the problem is fixed.TM1000D.2 10/81 li-5
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I 111-2 REVISION 3.0 MEMORY TESTRev 3.0 Serial Numbers:1300-2285, 2^24-2^51, 2^56, 2^66, 2^77Software: V.8.0 (1300-1309, 1311, 1312, 131^-1321, 132^, 1328)V.8.1 (1310, 1313, 1321-1323, 1325-1327, 1329-2285,2424-2451, 2456, 2466, 2477)NOTE: Following the appearance of a few Rev 3.0 <strong>Prophet</strong>s which spontaneously putthemselves into Edit Mode, the Rev 3.0 has been updated to (post-production) V.8.2,available as a 3-PROM set, SCI #2-984.Rev 3.0 <strong>Prophet</strong>-5s are tested with a special 2708 EPROM which can be ordered as SCI//Z-953.NOTE. Check that the RECORD switch is ENABLEd, and that user's programs arestored on cassette since the memory tests erase the NV RAM contents.1. Switch power off and insert PROM in PROM location (U312). (If available, insertfactory program PROM PROG5.5 into PROM 1 (U313) location. The test will load NVRAM with programs during section 3).2. Switch power on. The test will start, indicating the memory section in thePROGRAM display:1 = Scratchpad RAM2 = NV RAM3 = NV RAM load4 = 8253 Timer= End of test. No failures.i3. If a test fails, the program halts and displays the section number for the problemarea. Further tests are not executed until the problem is fixed-11-3 REVISION 3.1 MEMORY TESTRev 3.1 Serial Numbers 2286-2423Software:V.9.1Rev 3.1 has the memory test built-in but a simple hardware modification may berequired before itcan be enabled.NOTE. Check that the RECORD switch is ENABLEd, and that user's programs arestored on cassette since the memory tests erase the NV RAM contents.1. First, switch power off. The RAM test program is contained in the standard 2716software, V.9.1. (NV load similar to Rev 3.0 is provided.)2. If necessary, on foil-side (or, bottom) of PCB 3, cut trace between U324-10 andground.3. See SD342 in Section 10. If not installed, connect R3155 lOOK pull-down resistorfrom U324-10 to ground at U324-8.*-^.U-if TM1000D.2 10/81
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