Teac X-3R - RECORDING PERFORMANCE TESTS

X-3R
eM CONNECTION iNerRUcTION SOURCE (or CHECK) oye REmPnKS |
7-1|
Fig.
3-2
ales
YTT-1003
R116/R216
|
Fig.
36
9. TAPE SELECT. 9.
(R):
LH
(1,1D
+
7-2
me
YTT-1002
R120/R220
73
Changing
play
mode
to
REV
direction,
check
whether
the
frequency
response
specs
are
met
according
to
7-1
and
7-2.
7. Frequency
response FWD
74 TAPE SELECT, YTT-1053 R114/R214 Fig. 3-46
75
:
inne
YTT-1052
R118/R218
Fig.
3-7
16
Changing
play
mode
to
REV
direction,
check
whether
the
frequency
response
specs
are
met
according
to
7-4
and
7-5.
@ Ratio of spec,
FWD
and
REV
ti
OUTPUT
signal
HIGH
and
LOW
-
I)
f-8:dP)
to
10
8.
Signal-to-
|
8-1]
Fig.
3-2
LH
(1,
ID
and
EE
YTT-8013
Check
Hes
49
dB
herent
noise
level
noise
‘
and
LOW:
47
dB
@
Change-over
of
Use fully-erased YTT-8053 EE AC tine plug
tape
(Use
bulk
ae
51
dB
polarity,
The
worse
tape eraser) LOW: 49 dB reading should be
within specifica-
tion.
3-4 RECORDING PERFORMANCE
Deck settings: MONITOR sw.: TAPE TEAC test tapes: For recording alignment (blank)
MIC controls (L/R): Minimum level position YTT-8013: For LHII
LINE controls (L/R): Specified position (step 1-3) YTT-8053: For EE
OUTPUT controls (L/R): Specified position (step 1-2)
ADJUST
(or CHECK)
SIGNAL
SOURCE
MODE/
INSTRUCTION
REMARKS
CONNECTION
OUTPUT
AC voltmeter be-
tween terminals
#77 and #79 on
R & P AMPL PCB
Min, reading on AC
voltmeter
Min, reading
- L101/L201 [—40 dB or more
(7.75 mV or less)]
Rec-pause mode - L106/L206
9. Bias trap
Fig. 3-2
2
Test
tape:
YTT-8013
7
kHz/—32
dB
Azimuth
adjust
|
Maximum
output
10-1)
Fig.
3-2
SPEED
ow:
OW
(19.5
mV)
screw
of
head
level
10.
Record
Bias/EQ:
LH
IT
.
bias
il
(LH
TI)
Over
bias
value
10-2|
Fig.
3-2
me
i
C141/C241
2dB~4dB
He
(from
peak)
11.
Record
A
Test
tape:
YTT-8013
400
Hz/—12
dB
level
11-1)
Fig.
3-2
SPEED
sw.:
HIGH
(195
mV)
R158/R258
—5
dB
(436
mv)
(LHID
Bias/EQ:
LH
IL
-——|.
Required signal/
—22dB (61.5mvV) | 102/L202
Fig. 3-8
Fig. 3-9 |
When Bias/EQ are changed from LH IT
to LH |, output level should be raised
by +3 dB at 10 kHz.
12-1
Fig. 3-2 | YTT-8013
12. Frequency, Bias/EQ: LH IL
response | 12-2
(LH 1,
LH ID)
SPEED sw.: LOW
12-3 aS Bias/EQ: LH |
Required signal/
—32dB (19,5 mv)| /104/L.204
10 kHz/—32 dB
(i9.5mv) [Check
7 kHz and 400
Hz/—32 dB C142/C242
(19.5 mV)
Nearly equal
output level at
both frequencies
Test tape: YTT-8053
13-1] Fig. 3-2 SPEED sw.: LOW
Bias/EQ: EE
1 Test tape: YTT-8053
14-1] Fig. 3-2 SPEED sw.: HIGH
Bias/EQ: EE
400 Hz/—12
dB R159/R259 —5 dB (436 mV)
(195 mV)