Table Of Contents - Hitachi CPX2102MS Service Manual

SERVICE
MANUAL
1. Precautions
--------------------------------- 3
1-1. Safety Precautions --------------------- 3
1-2. Servicing Precautions ----------------- 5
1-3. Precautions for Electrostatically
Sensitive Devices(ESDs) ---------------- 6
2. Specifications
------------------------------ 7
3. Description of Controls
4. Exploded View
----------------------------- 10
5. Alignment and Adjustments
5-1. Preadjustment -------------------------- 12
5-2. Factory/Service Mode ---------------- 12
5-3. Other Adjustments --------------------- 16
6. Using Devices and Description
6-1. Main Signal Processor(TDA8842) -- 20
6-2. Vertical Output(TDA8351) ----------- 24
6-3. Video Output Amplifier
(TDA6101Q) -------------------------------- 25
6-4. Audio Output Amplifier(KA2201) --- 26
6-5. Power(STR-F6656) -------------------- 27
6-6. Video Select switch(CD4053BE) --- 28
6-7. Audio Select switch(CD4066BP) --- 28
21 "F " CHASSIS
CONTENTS
----------------- 9
---------- 12
------ 20
7. Technical Study(SMPS Operation)
7-1. VIN terminal(pin 4)
: Start-up circuit ---------------------------- 29
7-2. OCP/F.B. terminal(pin 1)
: Oscillator and constant voltage
control circuit -------------------------------- 31
7-3. OCP/F.B. terminal(pin 1)
OCP circuit ---------------------------------- 33
7-4. Drive circuit -------------------------------34
7-5. Latch circuit -------------------------------34
7-6. Thermal shutdown circuit ------------- 35
7-7. Overvoltage protection circuit ------- 35
8. Trouble Shooting
8-1. No Power -------------------------------- 36
8-2. No Raster -------------------------------- 37
8-3. No Sound -------------------------------- 38
9. Block Diagram
10. Pcb Layout
-------------------------------- 40
11. Parts List
----------------------------------- 42
12. Circuit Diagram
2
-- 29
------------------------- 36
----------------------------- 39
--------------------------- 47