Teac A-3300SX - Output and Meter Level Settings; Playback Performance Checks

8-5 OUTPUT LEVEL SETTING
— MAXIMUM OUTPUT LEVEL CHECK —
9. Play the 400 Hz/0 dB tone in Section 1 of the Test Tape.
10. Turn the OUTPUT controls fully clockwise and check
for —2 dB +2 dB (775 mV~488 mV) at OUTPUT jacks.
11. Reduce OUTPUT controls until —8 dB (308 mV) is ob-
tained on the output VTVM.
— SPECIFIED OUTPUT LEVEL SETTING —
12. Set the reference marks of the OUTPUT controls to the
3 o’clock position.
13. Adjust VR-201/VR-203 for —8 dB (308 mV) at OUTPUT
jacks.
NOTE: This is the Specified Output level setting. Do not
disturb this setting until the remaining adjustments
have been completed.
3 o'clock
Position
T-7I3
Fig. 8-4 Specified Output Level Setting
8-6 VU METER LEVEL SET
14, Adjust VR-202/204 for 0 VU reading on VU meters.
8-7 FREQUENCY RESPONSE (PLAYBACK)
15. Thread TEAC Test Tape YTT-1003 (or YTT-1002) on
the deck.
16. Play Tape and compare readings on VIVM with the re-
sponse limits given in Fig. 8-5.
17. If adjustment is required, adjust VR-102/104 for LOW
speed.
TAPESPEEDSW ......... HIGH
18. Thread a Test Tape YTT-1004 (or YTT-1003) on the
deck. Repeat Step 16.
19. If adjustment is required, adjust VR-101/103 for HIGH
speed.
NOTE: If the frequency response does not meet specified
response limits, especially at the high-end of the
spectrum, head should be checked for accumulated
dirt or oxides. If clean, head azimuth must be re-
adjusted.
3-3/4ips (4T)
zt
+3
&
|
+
%
RESPONSE IN dB
4) {i m4
pti tiie
4050 100 500 *« BK Wie 14K BOK
FREQUENCY IN Hz
an za Tih
| Litt
7-1/2ips (4T/2T)
+++
+4
°
RESPONSE IN dB
40 50 100 6 K BK OK 22K BOK
FREQUENCY IN Hz
LTH HiT] |
F
| 15ips (2T)
|_| arate eal
* | i +3
2 +2 +{itt
z
g 0 +t fttit (ch
z
8-2
= 3
-4 14
x «50 100 500 iK BK TOK 2K BOK
FREQUENCY IN Hz
Fig. 8-5 Frequency Response — Playback —
8-8 SIGNAL-TO-NOISE RATIO (PLAYBACK)
1. OUTPUT controls should be at the Specified Output
Level settings.
2. Thread a blank YTT-8003 on the deck leaving the tape
outside the capstan and pinch Roller.
3. Hold the play supply reel stationary and depress the play
(>) button.
4. The VTVM connected to the OUTPUT jacks should indi-
cated readings listed below.
TAPE SPEED
15 ips
7-1/2 ips 50 dB
3-3/4 ips 48 dB
8-9 HEADPHONE OUTPUT CHECK
1. Connect an 8 ohm non-inductive resistor across the head-
phone (PHONE) jack.
2. Connect VTVM across the resistor. VTVM should indi-
cate —24 dBt2 dB (61.5 mV ~ 38.8 mV).