Yamaha PortaSound PSS-100 Service Manual

SPECIFICATIONS (FRAIL) Seem e ence cece een eee e tanta een sen essescerecens 2
PANEL LAYOUT (/8 IL 1 DB) cceceeeteeteeeettttttenteeeeee tena ences 3
CIRCUIT BOARD LAYOUT (229 KL 4 PO b) cree 4
LSI DATA TABLE (LSI ¥ tia 3 # BE ZR eee nme n ewes eee reer rere reseeeccecs 5
' IC BLOCK DIAGRAM (Ic 7a y 27 Bl) ea refe a nieW 96" 0 80d 0 on 6s wae wa ee eee ers 5
DISASSEMBLY PROCEDURE (4)8¥55 1B) <--eereeeeeseeeeeeeeeeees 6
TEST PROGRAM Cor ok k7o D> tL.) Diaihaiaiod-ce prado wigs eerie reece tins Se wioeeres 8
CIRCUIT BOARD (vo — bh ARE) edi etie i bares e:deerels Sie o's & Srevsia Mae ee idle aie saseia ate 9
OVERALL CIRCUIT DIAGRAM (48IBIBREA) vreeeeseeeeereereererees 11
PARTS LIST
a.
- YAMAHA CORP.
HAMAMATSU, JAPAN
3.55K-57 K Printed in Japan '89. 2