United-Motors-Service-Delco-988569 电路原理图.pdf

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1、收音机爱 好者资料库 RadioFans.CN VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION UNITED MOTORS PONTIAC 988569, Alignment Information (Continued) (See preceding page at left for circuit diagram) RFUNIT |-I,-1|-1|-,r 1 fM (D ioJ. nfi E ip PARTS LAYOUT TURK VIEW 116 90 / / / i- I * ii I nUel ill

2、?* / fli HD 1 M III 1 IT IwTI uiir unr w, anz 1 QDEI iD T III PARTS LAYOUT CHASSIS VIEW Low Frequency Stop 4 /High Frequency TUNER UNFOLDED SIGNAL SEEKING TUNER ALIGNMENT PROCEDURE: Connect vacuum tube voltmeter between AVC line and ground during alignment Generator Return _ Dummy Antenna _ Volume C

3、ontrol _ Sensitivity Control _ Generator Output_ 1 . i, L-_L II yl TUNER _Receiver Chassis _ In Series With Generator _ Maximum Volume Position 2. (Position 1 is Maximum) Not to Exceed 2 Volts at VTVY1 Connect To Signal Generator Frequency Tune Receiver To Adjust in Sequence 12BE6 Grid (Pin 7) 262 K

4、C *High Frequency Stop A, B, C (Max.) 12BE6 Grid (Pin 7) 262 KC High Frequency Stop D (Min.) Antenna Connector 1615 KC High Frequency Stop *E, F, G (Max Antenna Connector 600 KC Signal Generator Signal J, K (Max.) Antenna Connector 1615 KC Signal Generator Signal F, G (Max.) Antenna Connector 1000 K

5、C Signal Generator Signal *L Dummy Antenna 0.1 Mfd. 0.1 Mfd. 000068 Mfd. .000068 Mfd. .000068 Mfd. .000068 Mfd. *T tun to high frequency, put a 0.070 feeler gauge (or bare #13 wire) in slot against ihe high frequency stop. See tuner pictures). Turn manual control to allow the planetary arm to run ag

6、ainst the feeler gauge. * Before making this adjustment, check the setting of oscillator core “H.” The rear of the core should be 1 from j m?tinS end of the coil form. This measurement is readily made by inserting a suitable plug in the mountin end of the coil form. The core adjustment is made from

7、the mounting end of the coil form with ai insulated screw driver. I will be neeessard to steady the core guide bar by applying a downward pressure at th. antenna core end of the bai vhile making these adjustments) If this adjustment is necessary, first dissolve the glyptal seal on the core stud and

8、be sure to re-seal after making the adjustment. *“L” s the pointer adjustment screw on the end of the core guide baradjust so pointer reads 1000 KC. With the radio installed and the antenna plugged in, adjust the antenna trimmer C” for maximum volume with the radio tuned to a weak station between 600 and 1000 KC (see sticker on casi). 163 收音机爱 好者资料库 RadioFans.CN