Kenwood RD-DV5-S, Руководство по обслуживанию, Страница: 8 / 61

RD-DV5-S/DV7-L/DV5MD-S
8
CIRCUIT DESCRIPTION
4. Test Mode
4-1 Setting method of the Test Mode
4-2 Cancel of the test mode
• By turning the AC off, the system is initialized and the
test mode is canceled.
• Cancel the test mode only if the power switch is turned
off.
4-3 Contents of the Test Mode
• The muting during mode selection is not controlled in
the test mode.
• During the test mode, it can be operated in a special
manner that is different from an ordinary operation by
using the keys on the main body, specifically as shown
in the following tables.
4-4 FCT(Factory) and Sub clock OSC Diagnosis
Mode
4-4-1 Sub clock OSC Diagnosis Mode
The oscillation diagnosis (existence of oscillation and
measurement of period) of a sub clock is performed
before the test mode is entered. If the diagnosis result
is OK, the system enters the test mode.
If the diagnosis result is NG, the oscillation of the sub
clock is diagnosed again. If the result is OK, the system
enters the test mode. If the diagnosis result is continu-
ously NG 5 times, the system stops with "ERR1"and
"ERR2"displayed.
4-4-2 Operation in the Test Mode
KEY LCD OPERATION
REPEAT OK or
✽✽✽✽
ERROR
Self diagnosis mode
(Refer to servo error code)
✽✽✽✽
ERROR
Ex : ADSC ERROR
(Advanced Digital Servo Controller) ••• X35, IC1
KEYS DISPLAY OPERATION
MD PLAY/PAUSE Usual Indication MD playback/pause
STOP MD TEST Stop the MD operation.
SKIP UP/DOWN Usual Indication MD track up/down
REC MODE Usual Indication Hi-speed O.T.E.(DVD
î
MD) operation in the stop mode.
Start the MD recording with LP4 mode.
MD REC Usual Indication Start analog recording (DVD
î
MD).
MODE Usual Indication Start digital recording (D. AUX
î
MD).
SET ALL ERASE Stop the MD operation , and start operation of ALL- ERASE if disc is recordable.
4-5 DVD Test Mode
4-6 MD Test Mode
KEYS DISPLAY OPERATION
DVD PLAY/PAUSE
(Cyclically changed the mode play Usual Indication Disc playback
and pause by pressing the key.)
STOP(in playback mode) DVD TEST Stop the playback and return to first step of this test mode
STOP(in stop mode) Region code Indicated the region code
SKIP UP/SKIP DOWN Usual Indication Skip up/down operation in the DVD playback.
SOUND J ITT
✽✽✽
% Shows jitter value (binary values vs time deviation of PLL clock).
MD REC Usual Indication FF Operation (triple speed)
REC MODE Usual Indication FB Operation (triple speed)
4-7 MD Mecha. Adjustment
1. Preparation for Adjustment
You have to carry out the following test mode items if replace MD mechanism, pickup, head and pc board.
1-1 Procedure
1. Short-circuit #4(vss) and #7(wp) of IC1402(EEPROM).
2. Set the unit to test mode and carry out the every adjustment in test mode.
3. Stop the test mode by pressing the STOP key for 3 secs
4. Remove the short circuit of IC1402. Carry out reset start.
TEST MODE KEY SETTING
DVD TEST MODE DVD PLAY/PAUSE
MD TEST MODE MD PLAY/PAUSE Insert the AC cord to
MD MECHA. ADJ. MODE MD REC AC wall outlet with
FCT & SUB CLOCK SET/DEMO pressing the left key.
OSC DIAGNOSIS