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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
SCHEMATIC DIAGRAM
DESCRIPTION OF SCHEMATIC DIAGRAM
VOLTAGE MEASUREMENT CONDITION:
1. The voltages at test points are measured on the stable supply voltage of AC 220-240V. Signals are fed by a colour bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
Models
TU-65GD1E (AVC) LC-65GD1E (Display)
CONTENTS
Page
INDICATION OF RESISTOR & CAPACITOR:
RESISTOR 1. The unit of resistance "�" is omitted. (K=k�=1000 �, M=M�). 2. All resistors are ± 5%, unless otherwise noted. (K= ± 10%, F= ± 1%, D= ± 0.5%) 3. All resistors are 1/16W, unless otherwise noted. CAPACITOR 1. All capacitors are µF, unless otherwise noted. (P=pF=µµF). 2. All capacitors are 50V, unless otherwise noted.
DESCRIPTION OF SCHEMATIC DIAGRAM �������������������� D2 AVC SYSTEM FRONT Unit ������������������������������� D3 � D4 PC CARD Unit����������������������������� D5 � D12 CPU Unit �������������������������������D13 � D22 *Refer to the TU-45GD1E for the following item. AV, AUDIO IF, DVI, MAIN, TMDS-TX, DVB (IBO), POWER, DC/DC CONVERTER Unit DISPLAY TCON TOP Unit ����������������������������D23 � D46 TCON BOTTOM Unit ��������������������������D47 � D58 TMDS-RX Unit �����������������������������D59 � D62 LVDS REPEATER Unit �������������������������D63 � D64 LINE FILTER Unit ���������������������������D65 � D66 MAIN POWER Unit ���������������������������D67 � D68 SUB POWER Unit ���������������������������D69 � D70 INVERTER-1 Unit ���������������������������D71 � D72 INVERTER-2 Unit ���������������������������D73 � D74 INVERTER-3 Unit ���������������������������D75 � D76 INVERTER-4 Unit ���������������������������D77 � D78 INVERTER-5 Unit ���������������������������D79 � D80 INVERTER-6 Unit ���������������������������D81 � D82 KEY Unit ���������������������������������� D83 R/C, LED Unit �������������������������������� D84 EXT-SP Unit ��������������������������������� D85
CAUTION:
This circuit diagram is original one, therefore there may be a slight difference from yours.
SAFETY NOTES:
1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS. 2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH " " ( ) ARE IMPORTANT FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND PERFORMANCE OF THE SET.
D1
D2
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