– 22 –
5. Put the REC MODE switch to the STANDARD 48k (ATF: ON)
position and put the REMOTE switch to either the WIRED or
WIRELESS position (OFFSET: – or +), then check the RF sig-
nal waveform.
A
NG
A'
NG
OK
5
4 A’ or less
5
4 A or less
6. Put the REC MODE switch to the STANDARD 48k (AFT: ON)
position and put the REMOTE switch to the OFF position (OFF-
SET: 0), then check the RF signal waveform.
(1) Verify that the peak value (B) of the RF signal waveform is
60mV or more.
(2) Verify that the flat position of the RF signal waveform has
undershoots of 10% or less.
Check that there is a difference of 650 ± 15
µ
sec between the
oscilloscope’s SWP signal and the RF signal.
B
B
10
or less
B
10
or less
7. If any of the specified values are not satisfied, repeat items 3 to
6.
Adjustment Location: See page 20.
When replacing any drum related parts, be sure to perform this ad-
justment.
Adjustment Method:
1. Connect the CH-1 terminal of an oscilloscope to TP (RF) and
the CH-2 terminal to TP (SWP) on the DIGITAL board.
(see page 19.) and set the test tape TY-
3. Put the REC MODE switch to the STANDARD 48k (ATF: ON)
position and put the REMOTE switch to the OFF position (OFF-
SET: 0).
4. Press the AMS (
+
) key.
5. Press the PLAY (
”
) key.
6. “DPG OK” is displayed in the fluorescent indicator tube.
RF
SWP
650
±
15
µ
sec
Adjustment Location: See page 23.
CHECK AND REPLACEMENT FOR DATE FNCTION
Clock IC Back-up Check
•
When replacing the lithium battery (BATT501) or replacing any
of the clock IC (IC518) and peripheral parts, the clock will be
reset.
(The DATE display will be [‘-- -- --] [--
h
--
m
--
s
] even when the
[PRESENT] button is pushed.)
Perform the back-up check by the following procedure.
(1) Connect a DC voltmeter between the DIGITAL board’s TP
(BATT+) as (+) side on the TP (BATT–) as (–) side.
(2) With the POWER switch of the set OFF, check that the volt-
age (1) is less than +20 mV.
(If the measured value is more than +20 mV, inspect the IC518
and peripheral parts and replace as needed.)
(3) With the POWER switch of the set ON, check that the volt-
age (1) is less than 0 mV (minus indication), (If plus indica-
tion, inspect the D510 and peripheral parts and replace as
needed.)
(4) When these voltages are normal, set the clock to the current
date and time according to the instruction manual.
(year/month/day/day of week/hours/minutes/seconds)*
(5) After the clock is set in item (4), turn off the POWER switch
once and in several seconds, turn on the power again and
make sure that the clock is operating.
Adjustment Location: See page 23.
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
