An excellent document to assist in the repair of my old personal tape player. It includes full circuit diagrams and physical layout drawings and full instructions on disassembly and fault finding.
Well worth the meagre price.
Very good conversation, Pretty fast Service, wood do it again,
Have paid by Paypal, so i got the Service Manual online after 15 Min.
Very helpfully.
Greeting from Germany,
Hans
Good-quality scans. Detailed description. I hope I can repair the machine.
Text excerpt from page 1 (click to view)
Technical Manual
ERS 400/420/440
SPECIFICATIONS
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
Nominal Impedance: Power Rating: Frequency Response: Sensitivity: 4 ohms 8 to 30 watts RMS 90Hz-15kHz 85dB 1watt/1 meter
Environmental Reference Series 2-Way Speaker
PHYSICAL SPECIFICATIONS:
1x - 4" (10.1cm) IMG full-range transducer Baffle Dimensions: 7"H x 7"W" x 2-9/16"D XXXXXXXXXX XX 17.8x17.8x6.5cm Hole Size Required: 6"H x 6"W XXXXXXXXXXXXXXXXXX XX 15.2x15.2cm Baffle #760-6528 Grille #654-6631 Grille Foam Logo #965-6532 #716-5719
PRODUCTION HISTORY
Introduced in (800:1989) (820:1991) (840:1994) Discontinued (800:1991) (820:1994) (840:1998) Original Retail Price: (800:$160.00/pair) (820/840:$180.00/pair)
NOTE: ERS 400 MUST HAVE A SEPARATE INSTALLATION BRACKET
TECHNICAL INFORMATION
TWEETER #902-5032
REV A
9-98
INFINITY SYSTEMS INC., 250 Crossways Park Drive, Woodbury, New York 11797
ERS 400/420/440 Environmental Reference Series 2-Way Speaker
