JVC CA-MXDK1, Service Manual

Page: 19 / 67

(No.MB515)1-19
SECTION 4
ADJUSTMENT
4.1 ATTENTION IN SERVICE OF DVD SECTION
(1) When pickup, Flash ROM ,DVD module board were changed, initialize EEPROM by all means.
(2) When full initialization was excuted, excute learning with a DVD test disc by all means.
Test disc : VT-501, VT-502
Learning method : It is adjusted automatically by normal playback of a DVD disc.
4.2 TEST MODE
In DVD test mode, initialization processing, the version of a microcomputer, a front end check, JITTA, and a laser current value
are indicated.
Step Operation Function Remarks
1 The AC code is pulled
out, The STOP and
PLAY key of a main unit
are pushed simultaneously.
2 Version display
The version code is as the
following.
0x01: JC 0x02: 1U 0x03: D
0x04: E 0x05: 2U 0x06: 3U
0x07: UB 0x08: UT 0x09: 4U
0x0a: UY 0x0b: EE 0x0c: UF
Region code display
0x00: 0(Free) 0x01: 1 0x02: 2
0x04: 3 0x08: 4 0x10: 5 0x20: 6
0x40: 7 0x80: 8
"X" is indicated at the time as the
one except for the above.
The study state and an
initialization state from a back
end are displayed on the 10th
and 11th figure of FL display.
0xFF : Blank display
The study state(The 10th figure)
0x03: DVD Study un-completing,
CD Study un-completing. ("3")
0x02: DVD Study completing,
CD Study un-completing. ("2")
0x01: DVD Study un-completing,
CD Study completing. ("1")
0x00: DVD Study completing,
CD Study completing. ("0")
The initialization state
(The 11th figure)
0x03: FULL initialization end
("3")
0x00: NORMAL initialization end
("0")
0xFF: Initialization un-ending.
("Blank")
The AC code is inserted
with the state of 1. It is made POWER ON in test
mode, and VERSION is displayed
on FL.
FL display
1 2 3 4 5 6 7 8
TEST J C #
* *
1 Push the PAUSE key of a
main unit.
NORMAL initialization
* segment of FL is RDS on at the
time of the completion of
initialization.
Display the version of a micom
on FL. aa: Reserve(blank),
bbb: syscom version, ->017
cc: syscom model->_1/_3/51
dd:syscom destination
->U1/U2/U3/U4/EE
eeee: DVD backend version
->0271
syscon destination->U1:US/A
U2:UN U3:UG/UX
U4:UW/UY EE:EE
T J C #
* *
2
3
Push the STOP+POWER+
10 key of a remote control
for a long time.
FULL initialization
Push the STOP+POWER+
9 key of remote control.
* segment of FL is COLT START
on at the time of the completion
of initialization.
T J C #
* *
aa . cc
ee ee
dd 5sec
temporary
5sec
temporary . bbb
DVD
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