Motorola V200 Service Manual page 69

Level 3 Service Manual
6881039B10
does not work.
10. SRAM troubleshooting.
• IF SRAM_CS is toggling, go to step 11.
• If problem still exists, reflow SRAM U1400, or replace U1400 if reflow
does not work.
11. Audio/power controller IC U1200 troubleshooting.
• If CCAP_CS is toggling, reflow call processor IC U1100, or replace
U1100 if reflow does not work.
• If problem still exists, reflow U1200, or replace U1200 if reflow does not
work.
12. Switch R9952 back to R9972.
If the UUT turns on the first time during the debug process, wait 30 seconds to
insure the software has fully initialized the flash SEEM.
General Charging Failures
The following tips may be helpful for troubleshooting charging problems.
Charging icon not flashing
• J1000 pins 1, 2, or 3 not connected.
• EXTB+ pin of audio/power controller IC U1200 pin D1 not making contact.
• Q1305 may be missing or misplaced.
• EXTBDRV pin of audio/power controller IC U1200 pin E4 not making contact.
Charging icon flashing but no charge current
• R1052, Q1050, or CR1051 misplaced, missing, or defective.
• CHRGC U1200 pin A2 not making connection.
• ISENSE U1200 pin B2 shorted or not connected.
• Battery connector BATT+terminal J870 pin 4 intermittent.
Charging icon flashing but charge current always greater than 500 mA
• R1052 or Q1050 shorted, misplaced or defective.
• CHRGC U1200 pin A2 not making connection or shorted to ground.
• ISENSE U1200 pin B2 shorted or not connected.
• U1200 charge current register always > 90 hex. Replace U1200.
Charging icon flashing but charge current unstable
• Q1306, R20214, or Q1309 misplaced, shorted, or defective.
• CHRGC U1200 pin A2 not making connection or shorted.
• ISENSE U1200 pin B2 shorted or not connected.
Charging Icon always shows fully charged
• Battery connector BATT+terminal J870 pin 4 not connected properly.
• MAINBATT pin U1200 pin C3 not connected properly.
No battery/charging Icon
• Battery connector BATT+terminal J870 pin 4 or ground terminal J870 pin 1
not connected properly.
• MAINBATT pin U1200 pin C3 not connected properly.
• MAINTEMP pin U1200 pin D4 not connected properly.
October 04, 2001
Troubleshooting
65