Teac R-H500 Service Manual

PLAYBCK FREQUENCY. RESPONSE”
|. -4. Test equipment connections are shown in fig. A 7
2. Playback the playback frequency response test eae
3. Check shown in a 5 for both L-ch and R-Ch. sscccscee
I
Usk
erik
a
|
ies
AOKHZ
12.5KH2
BIAS FREQUENCY ADJUSTMENT
4. Test equipment connections are shown in fig. 6. :
2.
Load
a
CrOz
blank
test
tape.
gh
hassis
-)
..
pT
a
3. Press the record and pause button. 7 Le
4, Adjusts.T501 for. 105iKHz frequency counter reading.
; Sere a eT “Dai requency cose ioe
AL ates cee. OG
Co ERTL
OVERALL GAIN ADJUSTMENT . SP utara oa ee ta et gett a UNE OUT
ee AF oscillator
1. Test equipment connections are shown i in n fig. | ee ere:
2. Insert the normal reference blank tape.” ge
3. Place UNIT into. record mode. . -
4, Supply @ 1KHz signal through J ATT (- 40dB) fi from AF oscillator.
tolinein. .. |
. Adjust ATT until monitor level at TP31 (L-ch) or TP32 (F-ch)
becomes 180mvV.
. Playback recorded tape and make sure that the output level
at TP31 (L-ch) or TP32 (R-ch). becomes 180mV. |
. ff measured value is not 180mvV, adjust it by using VR31 (L-
CH) or VR32 (R-CH).
. Repeat from step (2).
| OVERALL FREQUENCY RESPONSE
1. Set a normal blank tape (MTT-5511) and record by apply sig-
nal (100Hz, 1KHz, 10KHz) through ATT-from AF oscillator to
lins in (Line out Level: 33mV). : OSCILLOSCOPE
. Playback the signal recorded in step 1, and check that the Af.gswilator ‘UNE IN UNE OUT |
level of each output frequency in within the range shown in _S00ohmn |
fig. 8 in comparison with the reference frequency (1KHz). wey Ot
. If it is not within the standard range adjust the bias current
by using VR51 (L-CH) or VR52 (R- CH) sO > that the frequency
level is within:the’standard.
@ Level up in high frequency range .. . Increase the bias cur-
rent.
e@ Level! down in high fsuueney. ange: Dectanee the bias
current. =
4. After that; increase. the signal meorded on CrO2 blank tape |
(MTT-5561) and metal blank tape (MTT-5571) up to 12KHz
and adjust in the same way as mentioned above and check
that frequency level is within the range shown in Fig. 8.
63Hz 125Hz 10KHz 12.5KHz
SERVICE MANUAL

Teac R-H500 Specifications

General

Brand	Teac
Model	R-H500
Category	Cassette Player
Language	English