TM 11-6625-3145-14
Maintenance: Troubleshooting-318/338 Service
Description - Detected battery voltage status is shown in the status register at bit 07. TSTBTT this bit from 1/0 address
80. (Refer to the 318S1/338S1 I/O function list)
Battery voltage is detected by Q170, and battery status is applied to bit #7 of the status register by U32.
U30 decodes 318S1/338S1 I/O addresses.
15. NON-VOLATILE MEMORY TEST
Program : TSTNVI (power on), TSTNV2 (Troubleshooting)
Function:
Power-on - The NVM has a checksum word that is used for checking non-volatile memory data. The TSTNV1 program
calculates the checksum by reading NVM data and comparing it with the NVM checksum.
Troubleshooting - The TSTNV2 diagnostic program includes 12 test programs. For all of these tests, the method is read
data after write. (Refer to the failure code list for check data format.)
All NVM data is cleared after the diagnostic test has run.
Description - The NVM address is from E000 through E7FF; the NVM address select signal (NVMCS) is supplied from
the address decoder on the MPU (A06) board through bus connector 46B. The NVM chip is selected by the inverse
NVMCS and the power (+ 5V) monitor signal. If the power moniter circuit detects low power (-: 4.6V), the NVM can not be
selected.
NVM data is gated by U25, which is controlled by the BRD, BIORQ, and NVMCS signals. The RD and WR signals (these
are the inverse signals of BRD and BWR) control the direction of NVM data.
16. RS-232 TEST
Program : TSTRM1 (power on) TSTRM2 (Troubleshooting)
Setup: - Before starting TSTRM2, you must connect the self test adapter to the RS-232 commucation port. (Refer to
Figure 3-22 in Section 3:
Operating Instructions.)
Function:
Power on - TSTRM1 initializes the SIO Port-B and reads its initial status. If the initial status is good, it loads dummy data
into the SIO and checks for status change.
Troubleshooting - TSTRM2 diagonostic has the following three functions:
1. checks MODEM control signals
2. checks the SIO Port-B status
3. checks data transmit and receive functions
Function 1 includes eight test programs. These programs check the status of MODEM signals RTS, CTS, CD, DTR, and
DSR.
Function 2 includes seven test programs. These programs check the SIO Port-B initial status.
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Summary of Contents for 318
Page 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
Page 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Page 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Page 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Page 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Page 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Page 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
Page 526: ...TM 11 6625 3145 14 ...
Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
Page 532: ...TM 11 6625 3145 14 ...
Page 536: ...TM 11 6625 3145 14 ...
Page 538: ...TM 11 6625 3145 14 ...
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Page 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Page 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Page 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Page 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Page 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
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Page 555: ...PIN 058584 ...