Philips snl1997 free download

File name snl1997.pdf

For internal use only PHILIPS ISSUE PA97.06 (97-11-26) Published by: Service Department LOBPA Hong Kong LINE OF BUSINESS PORTABLE AUDIO SERVICE NEWSLETTER 06.01 TYPENUMBER(S): AE3350 SYMPTOM : Batteries run out quickly. CURE : A transistor (Q7) and a resistor 1k (R17) were added since week 9636 to protect the audio IC from wrong polarity of external DC supply. The grounding end of R17 is wrongly connected to the ground before the power switch, so that a current of 2.5mA is drawn in the power "OFF" condition. To solve the problem, remove R17 and connect a 1k resistor from the base of Q7 to the negative (-) of C43. REMARKS : Modification has been implemented in production from week 9745 onwards. 06.02 TYPENUMBER(S): AW7150, AW7250 INFORMATION : For AW7150/11P and AW7250/11P only: The tuning capacitor 2101 was replaced by 4822 125 11104. To obtain optimum alignment, following components were changed to: 2116 5322 122 34107 3.9pF