Teac V-909RX - Recording Performance

V-909RX/V-707RX/V-707R
5-3 RECORDING PERFORMANCE
V-707RX settings: V-909R X/V-707R settings: TEAC test tapes: .
NR
system
sw:
OUT
NR
system
sw:
OUT
MTT-5061:
For
record
test
with
CrO2..
RECORD
cont.:
Specified
position
(item
7)
MPX
Fill
sw:
OFF
MTT-501:
For
record
test
with
NORMAL
.
OUTPUT cont.: Specified position (item 2) RECORD cont.: Specified position MTT-5072: For record test with METAL
(item 7)
; : INPUT ADJUST MEASURING |
ITEM PREPARATION/SETTING SIGNAL (or CHECK) POINT: RESULT REMARKS
: LINE IN: BIAS TRAP TP.1/TP.
10.
Bias
trap
Record-pause
mode
No
signal
U106/U206
Min.
reading
fTP.2
Turn trim pots R14/R24, R15/R25 fully clockwise (viewed from REC/PLAY AMPL PCB foil side)
for each trim pot to obtain minimum resistance value. , .
TAPE SELEC- R14/R24
(FWD)
R15/R25
MTT-5072 (REV)
TAPE SELEC- ;
FWD & REV | TOR: Se abate OUTPUT:
11.
Record
bias
record/ptay
CrO2
altatiatel
142
dB
BLT
was
Nearly
equal
level
modes Tape: (6.15 ai at both frequencies .
MTT-5061 am For L&R-
| ch in FWD &
TAPE SELEC- REV
TOR: :
NORMAL R16 .....
Tape:
MTT-501
TAPE SELEC-
TOR: eet OUTPUT:
METAL —8 dB (308 mV)
. R18/R28
qape: (REV)
MTT-5072
TAPE SELEC- :
; FWD & REV | TOR: LINE IN:
12. Record level record/play CrO2 400 Hz/—12 dB
modes Tape: (195 mv)
MTT-5061 OUTPUT:
= Check —8 dB +1.5 dB
TAPE SELEC- (259 mV to 367 mV)
TOR:
NORMAL
Tape:
MTT-501 (
doanee
OUTPUT:
Total h - LINE IN: 2.2% or less
: iets hon’ | Same as 12 above 400 Hz/—12 dB Check [METAL, CrO2]
istorion (195 mV) 2.0% or less
[NORMAL] |
OUTPUT:
. Frequency LINE IN: Fig. 5-4 to 5-46
. Same as 12 above Required signal/ Check If frequency response is out of specifica-
response —42 dB (6.15 mV) tion, recheck ‘’11. Record bais’’ and
“13. Total harmonic distortion”. |
LINE IN: OUTPUT
45. Signal-t ‘ 1 kHz/—9 dB 44 dB min. Ratio of speci-
iaebta Baha Same as 12 above (275 mv) Check {METAL, CrO2] fied output of |
ae 4 43 dB min. —5 dB to noise
i No signa! [NORMAL]
BERBERS 7
TAPE SELECTOR ear 7
METAL. MTT —5072 |
CrOz MTT—5061
NORMAL MTT —501
16