Technics RS-T10 - Page 4

RST10
Ref. No.
4
How to remove the front panel
Ref. No.
5
How to remove the main P.C.B.
Procedure
3^4
•Remove
the 5 screws (O—©).
Front Panel
rierij bn Fig. 4 vuiüsH .i,
Procedure
1^5
1. Remove the 2 screws (O, ©)•
2. Open the side of bacl< chassis,
and then pull down the back
chassis.
3. Remove
the 4 tabs aside.
Serial Number Plate
Fig. 5
* Serial No. Indication
• The serial number plate of the product is attached to the back chassis (shown in fig. 5).
I MEASUREM ENT AND ADJUSTM ENT METHODES
Adjustment Point VR7, 8 Tape m Overall Galn Adj.
VR1, 2
Tape H P.B. Gain Adj.-
^ VR301, 302 tape H] Bias Current Adj.
.a,0,«i amufoV-
Measurement Condltion
• Input level controls; Maximum
•Dolby
NR switch; Out
• Dubbing switch; off
Main P.C.B.
VR3, 4
Tape [H P.B. Gain Adj.
• K ï t )
Tape speed
adjustment
VR
(Motor)
.oM.iafi
•R
e;
:-iTl
• Make sure heads
are clean
• Make sure capstan
and pressure roller are clean.
•Judgeable room temperature 20±5°C (68+9°F)
O'
Measuring instrument
• EVM (Electronic Voltmeter)
• Oscilloscope
•Digital frequency counter
• AF oscillator
Test tape
• Head azimuth adjustment (8kHz, -20dB); QZZCFM
•Tape speed adjustment (3kHz, -10dB); QZZCWAT
• Playback frequency responce (315 Hz, 12.5kHz,
10kHz, 8kHz, 4kHz, 1 kHz, 250Hz, 125Hz, 63Hz,
-20dB); QZZCFM
• ATT (Attenuator)
• DG voltmeter
• Resistor (600Q)
% 0
•Playback gain adjustment (315Hz, OdB); QZZCFM
• Overall frequency response. Overall gain adjustment
• Normal reference blank tape; QZZCRA
_
• CrOs reference blank tape; QZZCRX
• Metal reference blank tape; QZZCRZ
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