" Reading " Display Check (= Only "Cd "Display) - LG LX-M230A Manual

• " READING " DISPLAY CHECK (= ONLY "CD "DISPLAY)

CONNECTOR LOCKING CHECK
(PN508,PN507,PN503,PN501 )
YES
CHECK POWER SUPPLY
PORT( PN508 ,PN507)
PN508 PIN 8 = 6.2V, PIN 7 = 5V
PN507 PIN 1 = 5V
YES
CHECK VOLTAGE THE PIN 2 OF
IC505 PIN2 : 3.3V
YES
CHECK RESET SIGNAL OF PN507
PN507 PIN7 : 5V
YES YES
CHECK MICOM INTERFACE
CIRCUIT( PN507 )
PN507 PIN 6,8,9,10 SIGNAL CHECK
(6: STAT, 8: MDATA, 9:MCLK, 10:MLD)
CHECK THE WAVE FORM #1
NO
NO
NO
NO
NO
- 2-4 -
DEFECTIVE CONNECTOR OR
MAIN POWER SUPPLAY
DEFECTIVE IC505
DEFECTIVE MICOM OR
CONNECTOR
DEFECTIVE MICOM OR
CONNECTOR
DEFECTIVE IC501