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12. THE DISPAY DOES NOT APPEAR ON MAIN DISPLAY.
Is Main Display unit fully inserted to CN704?
Clean the contact point of CN704 and insert the unit again.
Does the display appear?
Replace Main Display.
Does the display appear?
Is 3.6 or more voltage applied to VBAT terminal (FS701)
Is 2.8 ± 0.1 V applied to TP170?
Is 3.0 ± 0.1 V or more applied to TP173?
Is 1.8 ± 0.1 V or more applied to TP714?
Is 13 MHz applied to clock TP713?
Is 3.0 ± 0.1 V supplied from LCD_RST (R749)?
Are R746, C736, C751, CN701, and CN703 good in appear-
ance and mounted properly?
Is 3.0 V ± 0.1 V applied to CN704 pins 34, 37, and 38?
Are R736, R738, C774, and C775 good in appearance and
mounted properly?
Is 3.0 ± 0.1 V applied to the LCD reset (CN704 pin 33 and
C766)?
Is C766 good in appearance and mounted properly?
Is the signal of approx. 62 Hz present on C760?
Are C758, C759, C760, and C761 good in appearance and
mounted properly?
Is the following voltage applied to the terminal?
TP720: approx. 10 V
Are C771, C772, C773, C776, C777, C779, C780, C781,
C782, and C783 good in appearance and mounted properly?
Main Display unit is defective, or connector CN704 is mounted
improperly.
CONFIDENTIAL
YES
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
TM200 1ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE
Improperly inserted to the connector.
NO
The contact point of the connector is dirty.
YES
Main Display unit is defective.
YES
Go to the section "Power is not turned on."
NO
NO
Go to the section "Power is not turned on."
NO
Go to the section "Power is not turned on."
Regulator IC703 or R716 is defective.
Is 3.0 ± 0.1 V applied to IC703 pin 1?
NO
Are R743 and C728 good in appearance and mounted prop-
erly?
Are CN701 and CN103 good in appearance and mounted
YES
properly?
CN703 and CN103 are defective or mounted improperly. And
FPC is defective.
NO
Go to the section "Power is not turned on."
R746, C736, C751, CN701, and CN703 are defective or
NO
mounted improperly.
CN704, R737, R738, C774, and C775 are defective or
NO
mounted improperly.
Display controller IC (IC704) and C766 are defective or
NO
mounted improperly.
Display controller IC (IC704), C758, C759, C760, and C761
NO
are defective or mounted improperly.
Main Display unit, CN704, C771, C772, C773, C776, C777,
NO
C779, C780, C781, C782, and C783 are defective.
2 – 37
NO
YES
NO
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