Sharp GX20 Service Manual - Page 47
KEY PWB-B REAR SIDE, TP No., Signal name
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KEY PWB-B (REAR SIDE) TP321 TP348 TP328 TP330 CONFIDENTIAL TP329 TP309 TP313 GX20 TP301 TP345 TP346 TP311 TP315 TP314 TP307 TP305 TP306 TPB334 TP347 TPB332 TPB331 TPB333 TPB336 TPB335 TP317 TP319 TP324 TP320 Figure 74 TEST POINT TP No. TP301 TP305 TP306 TP307 TP309 TP311 TP313 TP314 TP315 TP317 TP319 TP320 TP321 TP324 Signal name VSIM (2.85V) VVIB DGND VVIB TXD ADPDET RXD RTS CTS VTCXO (2.9V) VRF (2.9V) CHGIN CHGIN MIC TP No. TP328 TP329 TP330 TP345 TP346 TP347 TP348 TPB331 TPB332 TPB333 TPB334 TPB335 TPB336 Signal name KEYPADCOL [1] KEYPADCOL [2] KEYPADROW [0] KEY_BL_ON KEY_BL_ON JACK_GND DGND BATT_SENSE DGND BATT DGND BATT BATT 2 - 41
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GX20
2 – 41
CONFIDENTIAL
Figure 74
TEST POINT
KEY PWB-B (REAR SIDE)
TP No.
Signal name
TP No.
Signal name
TP301
VSIM (2.85V)
TP328
KEYPADCOL [1]
TP305
VVIB
TP329
KEYPADCOL [2]
TP306
DGND
TP330
KEYPADROW [0]
TP307
VVIB
TP345
KEY_BL_ON
TP309
TXD
TP346
KEY_BL_ON
TP311
ADPDET
TP347
JACK_GND
TP313
RXD
TP348
DGND
TP314
RTS
TPB331
BATT_SENSE
TP315
CTS
TPB332
DGND
TP317
VTCXO (2.9V)
TPB333
BATT
TP319
VRF (2.9V)
TPB334
DGND
TP320
CHGIN
TPB335
BATT
TP321
CHGIN
TPB336
BATT
TP324
MIC
TPB332
TPB333
TPB334
TPB335
TPB336
TP301
TP305
TP307
TP309
TP313
TP319
TP321
TP324
TP320
TP345
TP346
TP347
TP348
TP315
TP314
TP311
TP329
TP328
TP330
TPB331
TP317
TP306