Toshiba PC-E70 - Adjustment Procedures

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| PC-E70 PC-E70 |
ADJUSTMENT PROCEDURES
Description
Nominal
‘Test
Volume
Control
Adjustment
Test
Test
Freq.
|
Specs
Tape
|
REC
|
TAPE
|
DOLBY
Posints
Points
ATT
1
Head
Azimuth
Adjustment
MTT-111
OUT
|
Head
Azimuth
|
LINE
OUT
Adjustment After Adjustment lock with screw point.
Screw
2
’
TApe
Speed
Measurement
00030
Hz|
MTT-111
OUT
Semi-fixed
LINE
OUT
. resister in the
Playback
Sensitivity
580
+
10mV|
MTT-150
OUT
LINE
OUT
Adjustment
Playback
Frequency
Response
MTT-215C
OUT
LINE
OUT
:
SS
Measurement
(Normal)
7
10
Khz
Level
difference
for
315
Hz
Playback
Frequency
Response
4
+2
dB
|MTT-215C
NOR
OUT
LINE
OUT
Measurement
(Chrome)
ae
Change
for
10
KHz
Normal
tape
Output
Noise
Level
Under
.
{Blank
Tape
OUT
2.0mV
Line
Input
Level
Adjustment
|
580+
10mV
Adjustment
CrO2
OUT
LINE
OUT
400
Hz
REC.
Volume
adjustment
must
be
kept
—17 dB till frequency response adjustment
9
Meter
Adjustment
Meter
Indi.
|
CrO2
OUT
R525,
526
LED
Meter
|
400
Hz
—17
dB
Lee
OOD
sol
oo
Pesan
dh
eas
a
Mees
Was
fer
a
ead
he
eke
OPS
oe
cto
ts
GA
Meter Indi. CrO2 -| OUT LED Meter | 400 Hz —23
|
|
—23
+0.5
dB
Record
Playback
Frequency
O+2
AC-512
LINE
OUT
400
Hz
to
c
Response Adjustment —0
Power Supply TE: 220V VF: 230V TU, AY: 240V
©
Input:
0
dB=
1V
rms
@
LINE
IN
(Input
Impedance):
600
ohm
@
LINE
OUT
(Load
Impedance):
47
K
ohm
® Test Point Load Impedance: No Load
|
10
kHz
|
—
40
dB
LINE OUT 400 Hz
— 17 dB
R511
R512
11 Record/Playback Sensitivity
Adjustment
Measurement
Condition
(Bias Lead Adjustment)
TP24L
| ve ‘
2401
3. Ae
ene te)
( Playback Sensitivity Adjustment) (Line Input Adjustment)
R/P Head (L)
LINE IN
‘Test Tape
(MTT-150)
Resistance
Attenuator
—17dB
Signal
Generator
400Hz
R/P Head (R)
SO °} Figure 31
VTVM
R415
Figure 30 TP24R
LINE IN 7
(Rec/Play Sensitivity Adjustment)
Resistance
Attenuator
—17dB
400Hz \
Signal
Generator
LINE IN LINE
VTVM
VTVM
LINE IN
Figure 33
(Rec/Play Frequency Response Adjustment)
7
Generator Attenuator
4ooHziokrz 49-40 dBV
>
nd (~) <b Ras2 LINE yt
LINE
IN
=
200K
UT
Figure 34
VTVM
VTVM
Figure 32