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V-66C
DECK settings:
TEAC test tapes:
DOLBY NR IN/OUT sw.: OUT
MTT-5061: For record test with Co(Cr02)
INPUT sw :
LINE
MTT-501:
For record test with NORMAL
5-3
RECORDING PERFORMANCE
RECORD controls (L/R):Specified position(item7) MTT-5072: For record test with METAL
11-Record bias
12. Record level
13. Frequency
response
14. Total harmonic
distortion
15.S»gnal-to-noise
ratio
ITEM
SETTING
INPUT SIGNAL
ADJUST
(or CHECK)
MEASURING
POINT: RESULT
REMARKS
10.BIAS trap
Record-pause mode
LINE IN:
No signal
U101/U201
TP3/TP4
Min. reading
Turn trim pots R31 and R32 fully clockwise for each trim pot to have minimum value.
Then adjust in the order of steps (2) (3) 14).
_
2)
TAPE sw.: METAL
Tape:
MTT-5072
3)
TAPE sw.: Co (Cr02)
Tape:
MTT-5061
4)
TAPEsw.: NORMAL
Tape:
MTT-501
TAPE sw.: METAL
Tape:
MTT-5072
TAPE sw.:
Tape:
Co (Cr02)
MTT-5061
TAPE sw.
Tape:
NORMAL
MTT-501
TAPE sw.
Tape:
METAL
MTT-5072
TAPE sw.
Tape:
Co (Cr02)
MTT-5061
TAPE sw.
Tape:
NORMAL
MTT-501
LINE IN:
400 Hz & 10 kHz
alternately/-42 dB
(6.15 mV)
LINE IN:
400 Hz & 10 kHz
alternately/-42 dB
(6.15 mV)
LINE IN:
400 Hz & 10 kHz
alternately/-42 dB
(6.15 mV)
LINE IN:
400 Hz/-12 dB
(195 mV)
LINE IN:
400 Hz/-12 dB
(195 mV)
LINE IN:
400 Hz/-12dB
(195 mV)
LINE IN:
Required signal/
-42 dB (6.15 mV)
C11/C21
R31 ,
R32.
R13/R23
Check
Check
Check
LINE IN:
Required signal/
-42 dB (6.15 mV)
LINE IN:
Required signal/
-42 dB (6.15 mV)
Check
Check
OUTPUT:
Nearly equal level
at both frequencies
OUTPUT:
Nearly equal level
at both frequencies
OUTPUT:
Nearly equal level
at both frequencies
OUTPUT:
-6.5 dB (367 mV)
OUTPUT:
-6.5 dB ±1.5 dB
(308 to 436 mV)
OUTPUT:
-6.5 dB ±1.5 dB
(308 to 436 mV)
OUTPUT:
Fig. 5-8
... For L-&
R-ch's
... For L- &
R-ch's
OUTPUT:
Fig. 5-8
OUTPUT:
Fig. 5-8
If frequency response is out of specification, recheck #11 "Record bias".
Same as 12 above.
TAPE sw.:
Tape:
METAL
MTT-5072
TAPE sw.
Tape:
Co (Cr02)
MTT-5061
TAPE sw.
Tape:
NORMAL
MTT-501
LINE IN:
400 Hz/-12 dB
(195 mV)
LINE IN:
1 kHz/-9 dB
(275 mV)
i
no signal
LINE IN:
1 kHz/-9 dB
(275 mV)
i
no signal
LINE IN:
1 kHz/-9 dB
(275 mV)
i
no signal
Check
Check
Check
Check
OUTPUT:
2.2% or less with METAL, Co(Cr02)
2.0% or less with NORMAL
OUTPUT:
45 dB min.
OUTPUT:
45 dB min.
OUTPUT:
44 dB min.
Ratio of spec¬
ified output of
-3.5 dB to noise
11
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