JVC TH-S77 Service Manual page 23

4.2 DVD TEST MODE
This player has a TEST MODE for product QC, service or repair.
Contents as follows. If the DVD TRAY is not completely closed, supply AC power and press POWER ON to close the TRAY.
After confirm that the TRAY is completely closed go to standby.
Once LED lights up, pull off the power plug. Reinsert the AC power plug to the outlet while pressing, "POWER" and "STOP" button at
the front panel of the set.
TEST MODE has the 7 different steps. Press MENU key on the remote control to change the steps.
TEST MODE is canceled by the POWER key.
STEP 1:
Version
Version & Region explanation. Refer to next page.
Learn Status
Bit 0 - already learn DVD
Bit 1 - already learn CD
Bit 2 - already checked BCA area
Init Status
0x00 - normal init
0x01 - all init (above + FE)
0xFF - not yet init
STEP 2:
CPRM checksum (If Device key not input - FFFF)
STEP 3:
Sysyem
Version
STEP 4:
Indicator check mode. All FL segment light up.
STEP 5:
Mechanism check mode. In this mode player displays "CHECK".
STEP 6:
Model type
STEP 7:
System micon version
Model
Name
Learn Init
Region
Status Status
Rom
Unit
Correction
Version
Show R for RDS version or
Version and
blank for not RDS version
tuner AM
step
Software
Month:
Day
version
1: Jan
2: Feb
:
:
B: Nov
C: Dec
Region
0 - RF
1 - USA, Canada
2 - Europe, Middle East, Japan, South Africa
3 - S.Korea, Taiwan, HK, ASEAN
4 - Australia, NZ, Latin America
5 - Ex-Soviets, Indian sub-continent, Africa
6 - China
7 - Reserved
8 - International territory (airplanes, cruise ship, etc.)
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