JVC RC-QC7 User Manual

| RC-QC7 B/E/EN/G
Electrical Performance
Measurement
tems conditions Measurement method
Adjustment
of
*
Mode:
Forward
or
@
With
the
recording
and
playback
mechanism,
recording
bias
|
reverse
mode
load
the
test
tapes
(AC-514
to
TYP
Il
and
current
*
Recording
mode
AC-225
to
TYP
I
),
and
set
the
mechanism
to
the
(Reference
*
Test
tape
recording
and
pausing
conditions
in
advance.
value)
:
AC-514
and
AC-225
|
@
After
connecting
100
Q
in
series
to
the
recorder
Measurement
output
head,
measure
the
bias
current
with
a
valve
terminal
voltmeter
at
both
of
the
terminals.
: Both recording and @ After resetting the [PAUSE] mode, start
headphone terminals recording. At this time, adjust VR101 for LcH
and VR201 for RcH so that the recording bias
current values become 4.0 p A(TYP I )and
4.20 WA(TYPT).
Standard Adjusting
values positions
Adjustment
of
Reference
frequency
@
With
the
recording
and
playback
mechanism,
Output
recording
and
:
1kHz
and
10kHz
load
the
test
tape
(AC-514
to
TYP
II)
,and
set
deviation
playback
(REF.:
-
20DB)
the
mechanism
to
the
recording
and
pausing
between
frequency
Test
tape
conditions
in
advance.
1kHz
and
characteristics
|
:
TYP:
AC-514
@
While
repetitively
inputting
the
reference
10kHz
Measurement
input
frequency
signal
of
1kKHz
and
10kHz
from
OSC
:-1dB+
2dB
terminal
IN, record
and
play
back
the
test
tape.
:
OSC
IN
@
While
recording
and
playing
back
the
test
tape in
TYP II ,adjust VR101 for LcH and VR 201 for
RcH so that the output deviation between 1kHz
and 10kHz becomes - 1dB + 2dB.
li Reference Values for Electrical Function Confirmation Items
Measurement
Standard
@ While changing over to and from BIAS 1 and 2, 100kHz
+ 6kHz
Recording
bias frequency
+ Recording and
playback side forward or
reverse
* Test tape
: TYP: AC-514
* Measurement
terminal: BIAS TP on
P.C. board
confirm that the frequency is changed.
@® With the recording and playback mechanism,
load the test tape (AC-514 to TYP Il), and set
the mechanism to the recording and pausing
conditions in advance.
@ Confirm that the BIAS TP frequency on the P.C.
board is 100kHz + 6kHz.
Eraser
current
|
*
Recording
and
@
With
the
recording
and
playback
mechanism,
TYP
I
(Reference
playback
side
forward
or
load
the
test
tapes
(AC-
514
toTYP
Il
and
AC-
:120mA
value)
reverse
225
to
TYP
I),
and
set
the
mechanism
to
the
TYP
I
+ Recording mode recording and pausing conditions in advance. :75mA
@ After setting to the recording conditions, connect
1W in series to the eraser head on the recording
and playback mechanism side, and measure the
eraser current from both of the eraser terminals.
* Test tape
: AC-514 and AC- 225
Measurement terminal:
Both of the eraser head
(No.10036) 37

JVC RC-QC7 Specifications

General

Brand	JVC
Model	RC-QC7
Category	CD Player
Language	English