Service Mode List; When Replacing Eeprom (Memory) Ic - Toshiba MD24F52 Service Manual

This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit and on the remote control
for more than the standard time (second).
Set
Set Key
Condition
VOL. DOWN
TV mode
(Minimum)
VOL. DOWN
TV mode
(Minimum)
DVD mode VOL. DOWN
(No disc) (Minimum)
VOL. DOWN
TV mode
(Minimum)
VOL. DOWN
ALL mode
(Minimum)
DVD mode
STOP
(No disc)
Method
Press the following remocon keys
continuously.
SETUP SUBTITLE
AUDIO SELECT 0
CONFIRMATION OF HOURS USED
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
1. Turn on the POWER, and set to the TV mode.
2. Set the VOLUME to minimum.
3. Press both VOL. DOWN button on the set and Channel
button (6) on the remote control for more than 2 seconds.
4. After the confirmation of using hours, turn off the power.

SERVICE MODE LIST

Remocon Standard
Key Time
0 2 sec.
1 2 sec.
4 2 sec.
6 2 sec.
9 2 sec.
7 3 sec.
Tray cannot be opened.
Refer to the "TRAY LOCK".
3

WHEN REPLACING EEPROM (MEMORY) IC

Releasing of V-CHIP PASSWORD.
Initialization of factory TV data.
NOTE: Do not use this for normal servicing.
If you set factory initialization, the memories are reset such
as the channel setting, and the POWER ON total hours.
Initialization of factory DVD data.
NOTE: Do not use this for normal servicing.
POWER ON total hours are displayed on the screen.
Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS"
(CONFIRMATION OF HOURS USED).
Can check the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display
Adjustment).
Releasing of PARENTAL LOCK.
Refer to the "PARENTAL CONTROL - RATING LEVEL".
Operations
ADDRESS DATA
INIT 00 26
CRT ON 0000
FIG. 1
C-1
Operations
Initial setting content of MEMORY IC.
POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)