Table of Contents
Advertisement
t
'i
'
4
i
3
*
| 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
W a s
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
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
Advertisement
Table of Contents
