Minolta A2 User Manual

(2720)A 1
REPAIR GUIDE
REPAIR GUIDE
This repair guide section contains the disassembly and adjustment procedures.
For the assembly procedure, follow the reverse procedure.
SYMBOLS
■:Cautions and keypoints
: Grease
: Adhesive
: Tool
CONTENTS Page CONTENTS Page
Precautions------------------------------------------------- 2
Discharge --------------------------------------------------- 3
1. Disassembly of the exterior parts ------------------ 4
2. Disassembly of the compl PWB TB-3, LCD------ 8
3. Disassembly of the assy cabi front,
compl PWB TB-3/CA-2/TC-1 ---------------------12
4. Disassembly of the compl PWB SY-1/
ST-1/PW-1/TB-1/SY-2/DM-1 ----------------------18
5. Disassembly of the CCD holder assy,
the outer barrel assy and the 1st lens group
moving barrel. ---------------------------------------22
6. Disassembly of the outer barrel assy -------------25
7. Disassembly of the 4th moving barrel assy,
the 3rd moving barrel assy and the 2nd lens
group assy. ---------------------------------------------27
Arrangement plan of PCB -----------------------------29
Required adjustment, setting and confirmation
items after repairing (exchanging parts) --------30
Related adjustment and required setting items --- 31
Preparing the 2782 adjustment program-----------32
Starting up the 2782 adjustment program
(in the adjustment mode). -------------------------- 33
Contents of the adjustment program and CPU
version readout ----------------------------------------34
Setting the camera and the chart when
adjusting the CCD perspective.--------------------35
Adjustment of CCD perspective-----------------------37
Sensitivity adjustment (GAIN) -----------------------39
Adjusting the center part of CCD
(CCD CENTER) ---------------------------------------40
Adjustment of the frequency for camera shaking
(ACT DRV FREQ) ------------------------------------41
Adjustment of the servo for camera shaking
(SERVO GAIN)----------------------------------------41
Adjustment of the gyro for camera shaking
(GYRO OFFSET) -------------------------------------42
Adjustment of the shutter (SHUTTER) -------------43
Adjustment of the defective pixel
(DEFECT PIXEL) ------------------------------------43
Adjustment of the flash GN (FL GNo) --------------44
Adjustment of white balance (WB) -------------------45
Adjustment of the focus (FCS INF POS) -----------46
Adjustment of the manual focus PI (MF PI) -------47
Adjustment of the camera shaking compensation
(SHAKE OFFSET) -----------------------------------48
DESTINATION Setting (DESTINATION) --------49
Setting date and time (TOD) --------------------------49
Error code on adjustment program ------------------50
Measuring instrument----------------------------------51
Subsidiary Materials ------------------------------------52

Minolta A2 Specifications

General

Sensor Type	CCD
Optical Zoom	7x
Display Size	1.8 inches
ISO Sensitivity	64 - 800
Image Stabilization	No
Max Resolution	3264 x 2448
Image Ratio w:h	4:3
Sensor Size	2/3" (8.8 x 6.6 mm)
Maximum Aperture	F2.8 - F3.5
Storage Types	CompactFlash (Type I or II), Microdrive
Viewfinder	Electronic
Resolution	8 megapixels
Lens Focal Length	28 - 200 mm
Battery	NP-400 Lithium-Ion rechargeable battery
Shutter Speed	30 - 1/4000 sec

Summary

Precautions

Chemicals

Handling precautions for volatile chemicals used in repair.

PCBs

Discharge of Main Condenser

Post-Repair Adjustment and Confirmation Items

Related Adjustment and Setting Item Dependencies

Preparing the 2720 Adjustment Program

Starting and Quitting the 2720 Adjustment Program

Setting Camera and Chart for CCD Perspective Adjustment

In Case of Using the Camera Chart Setting Stand

In Case of Using a Tripod

CCD Perspective Adjustment Procedure

Procedure of the Adjustment

Detailed steps for adjusting the CCD perspective.

Sensitivity (GAIN) Adjustment

CCD Center Part Adjustment

Camera Shaking Frequency Adjustment (ACT DRV FREQ)

Camera Shaking Servo Adjustment (SERVO GAIN)

Camera Shaking Gyro Offset Adjustment

Shutter Adjustment

Defective Pixel Adjustment

Flash GN Adjustment

White Balance (WB) Adjustment

Focus Adjustment (FCS INF POS)

Manual Focus PI Adjustment

Camera Shaking Compensation Adjustment

Destination Setting

Setting Date and Time (TOD)