Teac V-870 - Monitor Performance

5-4. MONITOR PERFORMANCE
ER FR
Deck settings
Mode : RECORD/PAUSE {Except item 11 )
MASTER REC LEVEL cont. > Maximum
AUTO MONITOR sw. 2 SOURCE
NR SYSTEM sw: (OUT
NPX FILTER sv. ? OUT
SETTING INPUT SIGNAL Bi fcaeey ria POINT, REMARKS
RE AdES ot GIES) fi #
SP WEHM - HR
Min LINE
LINE IN {L/R} ; OUTPUT (L/R)
a
aad
Connection
:
Fig.
5-1
400
Hz
/
-19
dB
|
Check
-§
dB
+
3
dB
BW
DAAVAL
{
86.9
mv
)
(
308
mv
~
615
mV
)
LINE IN (L/R) : PRESET cont,
400H2/-9dB (275m¥) 1 LZR)
DOLBY TP (L/R) :
. Specified -10 dB ¢ 245 mV }
LINE tnput level
LINE FEA
VAIL
Connection : Fig. 5-1
After adjusting, do not move the PRESET cont. (L/R). { Specific position }
HOR Bit PRESET DHEALHMAGIYCE, ;
[
8, MEter level ; © Ein Be LINE EN (L/R} : PEAK LEVEL meter ( L/R) :
X-46 Lag, | Comectton + Fig.d-1 400Hz/-9d8 (275avy | ChECK 0 dB (RED) :
» PHONES weer channet
output Jevel Connection : fig, 4 -7 LINE IN (L/R) : Check BF eRe
PHONES 7D PHONES LEVEL cont. Max. 400HZ/-SdB (275m¥) -15 dB +3 dB
UAW : ( 97.5 mY ~ 195 nv }
. CO level check | Connectton : Fig. $-1 LINE IN (L/R) : LED: Lit) axe
co * + STOP mode 400 Hz / -12 dB Check . PEAK LEVEL meter (L/R} :
VAIb+ Foy ich LEVEL CHECK sw, < Set ( 196 mV } 0 dB
oscillator
AC voltmeter
BECK unde test
PHONES 0477 7 Ren
INE TEST LOAD RESISTORS
Y 2 —tRGR
Fig. 5-7 Test setup for PHONES check K-—> WHAM -
Frequency Counter * — be edd
+a res == ZY Poe. = 2S Sei 7
MAIN PCB TP.5 ned ae aed H
+2
7)
“2
;+—_¢—_}
DECK. GNDe oe ae so
under TEST -3 Cosses= Jo bec cee nna
40 : 400 12,.5e (Hz)
Fig. 5-8. Test setup for bias osc, frequency adjustment
a ae a FRI RS AS HA Fig. 5-9 Overall frequency response
; $2 75 2) RISE
12