Tascam 488 Portastudio Service Manual

Page 1

TAS CAM

TEAC Professional Division

SERVICE MANUAL

488

PORTASTUDIO

NOTES 523

As regards the resistors and capacitors, refer to the circuit 1 gamma; 3' >77Vlifilfib15) 37 @35-
diagrams and the PCB ass'y drawings contained in this manual. 1 It Ugtliléé. 1:1 ( 7: 3 vs

Parts marked with ' require longer delivery time. i . 7 I) z i gtfidflt: gfiaflnfihi 6 in L 3 95

" Resistor values are in ohms 1k = 1,000 ohms, M = 11000.000 2. * Epmggngigmmg 5,53» b55377}
ohms). (tz'évz

.

All capacitor values are in microfarads (p = picofarads).

a 1 . _
AParts marked with this sign are safety critical components. 3 ' AEnizfigifififiggfi T? §3§v % t a L; M "1 T 1

They must always be replaced with identical components - refer T '7 7 Ezmflfi'éfim L (T 3 L
to the TEAC Parts List and ensure exact replacement. 4 - " "JbliodB: 'V&¥¥1 L T 3 T
0 dB is referenced to 1V in this manual unless otherwise speciti- 5 . 3 >71 >vm$1fiispfip=pi=mui=z | ,ooo,ooopF)
ed. 6, etamaegan'cvar;m:s sté'uciEiaalM-eaia

PC hoards shown viewed from parts side.
Parts not shown in the parts lists, or pans, though listed, having
no pans numbers, are not general "ready-to-suppiy" pans.

Tk*b%%hfi) 11s
7. J X i SHTUQLEISEEQER'JC LCV-t'lfitéifi El:
r: LTERIfioTiéfi/x.

INSTRUCTIONS FOR SERVICE PERSONNEL

BEFORE RETURNING APPLICANCE TO THE CUSTOMER, MAKE LEAKAGE-
CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.

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