IBM 2621421 Hardware Maintenance Manual - Page 35

Terminal 3 4 5 6 7 Signal / Voltage (V dc) Reserved Reserved Thermal Sense Ground Note: Signal lines, not used in these steps, are used for communications between the system and the battery. 3. If the voltage is less than +8 V dc, recharge the battery pack. If the voltage is still less than +8 V dc after recharging, replace the battery. System Board Check The system board performs processing functions. Thus, the system board can cause processor problems. To verify the problem, do the following: 1. Boot from the diagnostics diskette and start the PQA program (please refer to "Running the PQA Diagnostics Program" on page 49). 2. Run the System Board test to verify the symptom. This test verifies both the system board and the processor board. If the tests detect a system board problem, replace the system board. Note: Don't touch the keyboard and pointing device when the system board test is running. This may cause an unexpected error. Memory Check DIMM are available for increasing memory capacity. DIMM 32MB 0MB 32MB 64MB 0MB 64MB 32MB 64MB 128MB 0MB 128MB DIMM 0MB 32MB 32MB 0MB 64MB 32MB 64MB 64MB 0MB 128MB 32MB Total Memory 32MB 32MB 64MB 64MB 64MB 96MB 96MB 128MB 128MB 128MB 160MB ThinkPad i Series 1400 (Part I) 27