Sharp GX20 Service Manual - Page 82

GX20 5. All Key Test and Others CONFIDENTIAL 1) Fit a battery or a dummy battery in the set. Hold down the "End/Power" key to start up in the general mode. 2) Connect the Data cable and send the [AT+XDIAG] command to receive the response [DIAGREADY]. 3) Send the [PWRFON] command to receive the response [OK]. 4) Send the [PWRDOWN] command to power off. 5) Hold down the "End/Power" key to display "****". 6) Press the "3" key to display "H/W CHECK *GX20*" and then to access the test mode. • After the test mode is started, the Data cable can be removed. • The back light is on for standby. The [PWRFON] command is executed to enter the special mode; in the case of restart, the test mode is started with the display "****". Startup is unavailable in the normal mode. After ending the test, follow the procedures below. 1) Press the "End/Power" key with the all key test initial screen displayed to power off. 2) Connect the Data cable and hold down the "End/Power" key to display "****". 3) Press the "2" key to display "Function Mode *GX20*". 4) Send the [PWRFOFF] command to receive the response [OK]. 5) Send the [PWRDOWN] command to power off. 6) Hold down the "End/Power" key and check for the startup in the normal mode. 7) Hold down the "End/Power" key to power off. Key "Send" "" "" "Centre" "0" "1" Contents Vibrator operation. "VIBRATOR" Displayed. Stop the vibrator with the key "0" to return to the all key test mode initial screen. Playback melody at max. volume (MERODY1 in the normal condition). "MELODY" displayed. Press the key " " to set the volume to the minimum, and the key "#", to the maximum, respectively. Stop melody with the key "0" to return to the all key test mode initial screen. Playback the ringer at max. volume (Ringer1 in the normal condition). "RINGER" displayed. Press the key " " to set the volume to the minimum, and the key "#", to the maximum, respectively. Stop melody with the key "0" to return to the all key test mode initial screen. Full-rate codec loop-back. "CODEC INT" displayed. Stop loop-back with the key "0" to return to the all key test mode initial screen. Return to the all key test initial screen. Display check mode. Display is as shown below. (The main display back light MAX; the external display back light Off; the key back light On; the mobile light Off.) LCD CHECK ∗ GX-20 ∗ ROM VERSION : ∗∗∗ GX20 Diag Version ∗∗∗ CVS Ver. A GX20 BLCD (256) : 089+004 BLCD (64K) : 075 "1": All White → All Red → All Green → All Blue → All Black → Color gradation → (Returning to white.) "2": First pressing of the key for white pre-flash of the strobe light. 400 ms full output given after the second pressing (Back to pre-flash). "3": Press this key for white pre-flash of the mobile light. The same state is remained until the "0" key is pressed. Press the key furthermore to change flash colors in the order of "White → Red → Green → Blue → Light blue → Purple → Yellow → (Back to white). "0": Press this key to turn off the mobile light and the key back light and then to access the all key test initial screen. "8": Press this key to turn on the external display back light with "H/W CHECK Den: 075" displayed. Every pressing of the "Side-Up" changes the screen in the order of "All white → All red → All green → All blue → All black → Color gradation → VCOM adjustment pattern → (Back to all white)". Press the "Side-Down" to reverse the order. "2" IrDA Check (115 kbps). Press the key "0" to return to the initial screen. Time out: 1 sec. "3" Display changed to CHG CHECK. Press the key "0" to return to the initial screen. AC Charger is inserted to turn on the red LED. "4" Press this key to change the main display to the flickering check pattern. Press the "0" key to return to the all key test initial screen. 2 - 76