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 ;
nice completed SERVICE MANUAL as the description THANK YOU !!!-
;
Hard to find service manual describing the PLL circuit of the AKAI AP-306.
Thanks to have it available.
;
Gut, sehr gut! It helps me much! I couldn't find this schema nowhere. Good quality
Capacitance Indication Tab. 3-1-3
Symbol
+
NP
M
Eg. 4
Unit Rated voltage Tolerance
None µ p
........... Electrolytic, Special electrolytic ........... Non polarity electrolytic ........... Ceramic, plastic ........... Film ........... Trimmer ........... F ........... µF ........... pF
100m
None ........... 50V For other than 50V and electrolytic capacitors, described in the Circuit Diagram. (1) Ceramic, plastic, and film capacitors of which capacitance are more than 10 pF. None ........... ±5% or more B ........... ±0.1% C ........... ±0.25% D ........... ±0.5% F ........... ±1% G ........... ±2% (2) Ceramic, plastic, and film capacitors of which capacitance are 10 pF or less. None ........... more than ±5 pF B ........... ±0.1 pF C ........... ±0.25 pF (3) Electrolytic, Trimmer Tolerance is not described. None ........... SL For others, temperature characteristics are described. (For capacitors of 0.01 µF and no indications are described as F.) Sometimes described with abbreviated letters as shown in Eg. 3.
Temperature Rated response voltage
Tolerance
Fig. 3-1-4 Eg. 5
104 10x104pF (0.1mF) Temperature characteristic
(or Temperature characteristic+
Static electricity capacity tolerance)
Temperature characteristic (Ceramic capacitor) Static electricity capacity (Ceramic capacitor)
Fig. 3-1-5
Waveform and Voltage Measurement � The waveforms for CD/DVD and RF shown in the circuit diagrams are obtained when a test disc is played back. � All voltage values except the waveforms are expressed in DC and measured by a digital voltmeter. Others � The parts indicated with "NC" or "KETU" etc. are not used in the circuits of this model.
1-2. Precautions for Part Replacement
� In the schematic diagram, parts marked (ex. F801) are critical part to meet the safety regulations, so always use the parts bearing specified part codes (SN) when replacing them. � Using the parts other than those specified shall violate the regulations, and may cause troubles such as operation failures, fire etc.
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