Galvin-Mfg-Co（Motorola）-X11B 电路原理图.pdf

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1、VOLUME R-20, MOST-OFTEN-NEEDED I960 RADIO SERVICING INFORMATION MOTOROLA Chassis HS-759, Models X11B,E,G,R This material is exact for later production; some earlier sets used a different printed circuit board with different placement, and several different valued parts. (Continued on page 97) -* s i

2、 Pf, ii MODEL CHASSIS X11B HS-759 XI IE HS-759 X11G HS-759 X11R HS-759 HOOK LOOP - ON SPRING (FINISH) GANG SET TO LOW END ($32 KC) 2-1/2 TURNS CHASSIS REMOVAL AND REINSTALLATION The complete chassis is removed by opening the back and removing the two small screws securing the chassis to the cabinet.

3、 Loosening the phone jack will then complete removal from the cabinet. No unsoldering and re soldering is required. The chassis is free from the cabinet and is an operating unit that can be checked and completely repaired before reinstallation in the cabinet. gg! tHW1, s + tHH 1ST IF Q, 455 KC 2ND I

4、F (g 455 KC 3RD IF (T 455 KC ) ANT CORE 600 KC 5) ANT TRIM 1400 KC sjrlf V- ?)OSCTRIM aS (-H V) OSC CORE 532 KC 8:1 *i;t 1 02V 20% w (NO SIGNAL IN, VOL AT MIN) *9V30%- eCCT (MAX SIGNAL, VOL AT MAX) C-9V- , V5* PWRAMP PWRAMP R19 7K OR Z7K# f BARE WIRE WITH SLEEVING* CAPACITORS Decimal values In MF. A

5、l) others In MMF unless otherwise specified. VOLTAGES - Measured from point indicated to ground with a VTVM+10%. No signal in, volume at minimum (except for emitter voltages In output stage), on schematic. *LOC/TED ON CONDUCTION SIDE OF BOARD. * SEE SUPPLEMENTARY REPLACEMENT PARTS LIST KMKM53H0 1 WH

6、T _ _ . _ ro r FI EARPHONE IBLK | JACK PRINTED CIRCUIT BOARD WIRING A5* . C2ilB- 2ND IF AMP*C / %4 -E-.76V -B-.9V -C-8.8V (Shown from conduction side of printed circuit board. Components shown appear on opposite side. To further aid servicing, the base, emitter, and collector voltages are included.) 97 收音机爱 好者资料库 RadioFans.CN