Labels:book | chat room | reckoner | sky OCR: KENWOOD SB-952 SERVICE BULLETIN AMATEUR RADIO SUBECT DATE TS. -440S OPERATION 01/24/89 When intermittent probl ems such as erratic display loss of front panel control or frequency lock-up encountered the PLL and Control circuits must be checked to determine which circuit mal functi ion ing Whi ile any number components cause such probl ems if the Control circui sus pect there is poss ibil that the ROM socket fault The socket should be tested to determi ine mak ng p0ob ca contact wi th each pin on the ROM found to be defective remove the Bocke ane lder the ROM directly the board The ROM IC52 on Control Uni should be not ed that un with number of XXXX606 and above not incorporate socket CAUTION Remov ing the socket from the board requ ires good soldering skills. The board being double sided ...
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