Onkyo TA 6210 Service Manual
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Extracted text from Onkyo TA 6210 Service Manual (Ocr-read)
Page 1
TA-6210
Ref. No. 3512
ONKYOQ SERVICE MANUAL
CASSETTE TAPE DECK
MODEL TA-621O
Fun mar. cmmu
Black model,sllver model
MP 230V AC. 50Hz
MW 120V/220V AC, 50/60Hz
MD 120V, 60Hz
SAFETY-RELATED COMPONENT WARNINGH
COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARF.
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE MEA<
SUREMENTS TO DETERMINE THAT EXPOSED PARTS
ARE ACCEPT ABLY INSULATED FROM THE SUPPLY
CIRCUIT BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.
ONKYO
Alllllfl llllMPlleNIS
SPECIFICATIONS
Track Fomial: 4-uacks, 2-channcls
Erasing Sygtcm: AC erase
Tape Speed 4.8 cm/scc. (1-7/8 i.p.s.)
Wow and Fluller: 0 07% (WRMS)
0.09% (DIN)
Frequency Response: 20-17,0()0Hz (normal l
(30716.0()0Hz 1 3dB)
20-I 89001-11 (high)
(3%[71300142 z 3dB)
20-] 9.000Hl (metal)
(30~ | 800(le x 3dBl
SSdB (meml tape. Dolby NR off!
A noiw reduction of km above SkHL
and SdB al [kHz is possible wnh Dolby
B NR A noise reduction of 20dB at
SkHZ is possible wilh Dolby C NR.
LINE IN: 2
Input scmuivny' 80 mV
Input impedance: so kohms
LINE OUT: 2
Standard ouipul level: 500 mV
(OdBl
Optimum load impedance: over
SI] kohmy
Headphone junk: I
Optimum load imrmlaucctfi m
200 ohms
Mmors. DC wrvo motor I
DC molar: |
Heads: REC/PB' Special Hard Pcmialluy x I
Erase head: Ferrite x l
Eumpcan models
AC 230 V. SUHI.
USA and Cadadian models:
AC 120V. 60Hz
WurIdWIde models,
AC l20 and 220 V. Swuchablc
SIN Ratio:
Inpul lacks
Ompul Jacky
Power Supply Rating:
6(l/5U Hz
Power Consumption: 20 walls
Dimension» 455(W) >< l20(H) x 3H(D)mm
I7 /m" X4 L" X IZ Vi"
WeighL 5 (J kg, (1 1.0 lbw
Specifications and external appearance are subieci u) change
wilhour notice because of pnxiuci impruvcmenis
Page 2
T -6210
ADJUSTMENT PROCEDURES
PRECAUTION
1. Before adjustment, clean the following pans
with an alchol moistend swab.
*record/playback head *erase
*pinch roller *capstan
2. Do not use magnetized screwdriver for
head
TEST EQUIPMENT/FOOL REQUIRED
Audio oscillator
Digital frequency counter
Oscilloscope
Attenuatel'
AC voltmeter
adjustment. Nonvmagnetie screwdriver
3. Demagnetized record/playback head with Test tapes
3 liead demagnetizer. TCC-153 : lOkHz, -15dB
M'I'T-lllN :3kHz, -10dB
MTT- 150 I Dolby level calibration
400Hz, tone 200nWb/m
. , 0
Item Cfmnecnon of me output Test tape Mode Tpm Adjustment point Adjustment Remarks
instrument freq/level indicator
Scre
Tape Frequency counler Frequency . w on back
1 0 LINE 0MP! MTF-l 1 IN PB std: of Capsum 3,000Hz+10Hz
W V counter
Iemnnals motor
AC voltmeter and Maximum level
2 l-kud osctlloscope to T C G l 53 PB AC Fig.1 & same phase at
azimuth LINE output voltmeter channels
terminals L and R
Playback Ac mm" 0 AC R117 (L.ch)
3 terminals TP-l MTT-l 50 PB 300mV
level voltmeter R118 (R. eh)
P1 05
0 SC Frequency counter NONE or Frequency Fr mode Will be
4 In P401 lead-Wire METAL STOP L407 107kszt1kHz alive when 1147 is
Block counter
loose coupling TAPE connected to GND
5 Bias 111::{8t NORMAL REC/ AC R461 (Leh) 0~+L0dB at F: h 33'
current Z TAPE PB voltmeter R462 (Kch) (Hz and lOkHz a V w a '5
-Z3dB 35mV connecmd to GND.
6 Recording 1kHz 350 V NORMAL REC] AC R403 (Lab) Same level at 1:: h "1111: _
level " TAPE p3 voltmeter R404 (R.ch) REC/PB V w ° "
commend to GND.
Blank tapes
NORMALu-UD-l C-9O
HIGH-n-"XLJI C-90
METALOOHXS C-90
Had azimuth screw
PLAY torque°°°m30~70glcm
FEREW torque--°-80~180g/cm
Back tension---'--6'~ lZg/cm
Don't much Lhesc screws.
GD
L0
Fig.1 R/PH
ead