Revox A77 Serviceanleitung Seite 128

-
Tape
Speed
Frequency Valtage
Testpoint
Where to adjust
ips
-
7.5
+ 21 V DC Ye llow wire p 106
ED 1
3.75
40 m V AC E1- E2 mounting screws
of tacho-head
7.5
120kHz <300 mV
see fig.
L 501
6.4.-63/64
7.5
120kHz
<
50mV
Wiper P 801 L 801
7.5 1601 Hz 10 V
Pin 2 on T 201 T 201
-
3.75 800Hz
p 201
7.5 120kHz 2 Track 21 VAC
HB3-HB6 blue & orange wire
7.5
120kHz± 5kHz HB3-HB6
7.5 120kHz± 5kHz
HB3-HB6
Dummy Ioad L 601
P 101 r (CHI, CH II)
P 102 r (CHI, CH II)
5kHz "-' 0.45 mV Generator
5kHz 3 mV P1, P2 Generator
5kHz
2.6 mV P3, P4 Generator
5kHz
"-' 7 mV P3, P4
(+8 dB)
5kHz
8 .2 mV P3, P4 P 102 r
( +10 dB)
5kHz -2d8 P3. P4 P 101 r
P 101 p (CH I,CH I I )
P 102 p ( C H I, C H II )
-
5kHz
P5, P6
5kHz 7.6 mV P7, P8
5kHz -10 dß
P7 , PS p 102 p
-
= 2.4 mV
5kHz + 2 dB P7, P8
P 101 r
=3 mV
-
)f
1 kHz -v13mV
1kHz 100 mV P1 , P2
1 kHz
ovu
p 103 p
e
-
7.5
185 nWb/m p 801
=OVU print 077.720
-
10kHz
vu
= 0 dß
10kHz -20 dß
7.5
4 dB
OUTPUT
3.75
5 dB
CH I,CH II