Technics SACH 55 Service Manual

Page 2

SA-CH55

PRECAUTION OF LASER DIODE ........................ PRINTED CIRCUIT BOARDS .............. . 9 '54
HANDLING PRECAUTIONS FOR TRAVERSE DECK . l WIRING CONNECTION DIAGRAM ............... 56, 56

ACCESSORIES

TERMINAL GUIDE OF IC'S. TRANSISTOR

LOCATION OFCONTROLS ............................. {4 6 AND DIODES .........................
DISASSEMBLV INSTRUCTIONS ....... . ~18 TROUBLESHOOTING GUIDE ..
MEASUREMENTS AND ADJUSTMENTS .. ... . .... $9=23 DESCRIPTION OF PANEL 7 ,. . . ..,. , A
BLOCK DIAGRAM (CD) 24=26 FUNCTIONS OFIC TERMINALS ..................... I 62'768
(MAIN) . . 27~3O REPLACEMENT PARTS LIST

SCHEMATIC DIAGRAM (POWER AMP AND MAIN) ...... 3| ~38 CABINET PARTS LOCATION .. ,

(CONTROL) . , ,7 . . 39-7742 MECHANISM PARTS LOCATION (DECK l) . .

(SERVO) ......... r. 43~45 (DECK 2) . . ,

[CASSETTE DECK). 46~4I3 CABINET PARTS LOCATION (LOADING UNIT)

PACKAGING .....................................

I PRECAUTION OF LASER DIODE

CAUTION:

ACHTUNG:

ADVARSEL:

This producl utilizes a laser diode wilh [he unil Iurnad "on", invisible laser radialion is emilled lrom lhe pick up lens.
Wave length: 780 nm
Maximum oulpul radialion power lrom pick up: 100 pWNDE

Laser radialion lrorn lhe pick up lens is salely level. bill be sure (he lollowings;

Do nol disassembla the optical pick up unit. since radialion from exposed lasard diode ls dangerous.
DQ nol adjusl lhe variable resislor on the pickup unill II was alraady adiusled

Do not look al lhe locus lens using optical inslrumenla.

Recommend nol lo look al pick up lens lor a long lime.

9.0.?

Dieses produkl enlhélt sine laserdiode. lrn aingeschallelen zustand wird unsichlbare laserslrahlung von der
lasereinhell abgeslrahlt.

Wellenlange: 780 nm
Maximale slrahlungsleislung der lasereinhall: loo uW/VDE

Die slrahlung an der lasereinheil isl ungel'ahrllch, wenn Iolgende punk16 beachlel warden:

. Die lasereinhelt nichl zerlegen. da die Slrahlung an der lreigeleglen laserdiode geléhriich isl,
. Den werksseilig juslienan einstellregler der lasereinreil nichl verslellen.

. Nichl mil oplischen inslrumenlen in die lokussierlinse blickan.

. Nichl ubsr léngere zeit in die lokusslerlinse bllcken.

J5 69 h) -

I delle I apparel anvendea Inor,

VARO Aunaessa (a
AIWARSEL: USYNLIG LASERSTRALING Sma'ukllus

vsu Asumn NAB srmnmw- ohllefiaessaolel
SHVDERZ a] Uni AF FIJNKI'IUN. aluima nakymampmalle
mock uusmuse ran mum W'Wewm'v

E mm

m Ala misc sareeseen
[lllllllllllllll llllllfll] 4

l VARNING 05me

IIIIIIIIIIII IIIIIIIIIIII III II VORSICHYMMIKMIme DANGER-Invisibi. lawsuainm na'
Lummhlma. mm lam minim Mun 09 09' 3 War-30
(-) Abdezkmo waEIImL um. 00- Spal'e 3
I] Nicki 66m SHIN AVOID DIRECT EX- 09
__ Aim-lull. lunm PDSURE I0 BEAM 38 el $3200

I...

CLASSl

LASER PRODUCT

LUOKAN 1 LASERLAITE
KLASSI LASER APPARAT

Page

. . 58. 59
760,61

697777
78*780
81%).":
84 '86
. 87 88