Service Mode List; When Replacing Eeprom (Memory) Ic - Toshiba 27DF47 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 or on the main unit
and on the remote control for more than a standard time in the appropriate condition. (See below chart.)
In case of the main unit and remote control, press the remote control buttons first, then press the main unit buttons.
Set
Set Key
Condition
VOL. DOWN
POWER ON
(Minimum)
VOL. DOWN
POWER ON
(Minimum)
VOL. DOWN
POWER ON
(Minimum)
VOL. DOWN
POWER ON
(Minimum)
VOL. DOWN
POWER ON
(Minimum)
CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS, MICON VERSION AND
DIGITAL TV MICON FIRMWARE VERSION
Initial total of MEMORY IC, POWER ON total hours, MICON VERSION and Digital TV MICON Firmware VERSION 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".
Please refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.
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 (8) on the remote control for more than 2 seconds.
4. After the confirmation of each check sum, POWER ON total hours, Digital TV MICON Firmware and MICON VERSION,
turn off the power.
NOTE: The each item value might be different according to each set.
Digital TV MICON Firmware
Initial setting data check sum.
Rom correction data check sum.

SERVICE MODE LIST

Remocon Standard
Key Time
0 2 sec.
1 2 sec.
6 2 sec.
8 2 sec.
9 2 sec.

WHEN REPLACING EEPROM (MEMORY) IC

MICON Version
Releasing of V-CHIP PASSWORD.
Initialization of factory TV data.
NOTE: If you set factory initialization, the memories are reset such as
the channel setting, and the POWER ON total hours.
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
Check of the SUM DATA, MICON VERSION, POWER ON total hours
and Digital TV MICON Firmware on the screen.
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).
ADDRESS DATA
POWER ON total hours.
CRT ON 0000
OEC7174A_23
DTV CTT71222
INIT 26B2
ROM: 43EB
FIG. 1
C-1
Operations
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)