ASAHI PENTAX S3, Service Manual

Page: 2 / 54

TABLE OF CONTENTS
Page
INTRODUCTION.....................……………………………............................................................... 4
SUMMARY OF STRUCTURE AND PERFORMANCE ......……………………….....................… 4
CHAPTER I. DISASSEMBLY......................................…………………………...................... 8
1. Disassembly of Cover Plates, Rapid Wind Lever and Rewind knob..................................... 8
a. Rapid Wind Lever (C03)
b. Shutter Speed Dial (E23)
c. Rewind Knob (D06)
d. Top Cover Plate (A03)
e. Front Cover Plate (A05)
f. Bottom Cover (A04)
2. Disassembly of Mirror Housing and Optical Parts .........………………………………. 9
a. Prism Seat (B01)
b. Mirror Housing (B02)
c. Mirror (AF12)
3. Disassembly of Top Transport Mechanism..................………………………………… 10
a. Wind-Up Lever Seat (C35)
b. Lever Stopper (C10)
c. Top 1st Gear (C20)
d. Wind-Up Lever Shaft (C34)
4. Disassembly of Bottom Transport Mechanism .......………………………………….... 11
a. Bounce Stopper Actuator I Lever (E98)
b. Coupler Lever (C15)
c. "R" Lever Parts (C70)
d. Pin Adjust Plate (C17)
e. Wind-Up Shaft Parts
f. Sprocket Shaft (C30)
5. Disassembly of Shutter Mechanism ..............…………………………………................ 12
a. Shutter Gear Mechanism
b. Shutter Curtain Parts
6. Disassembly of Mirror Housing Mechanism .......………………………………….......... 16
CHAPTER II. ASSEMBLY AND ADJUSTMENT ...................…………………................ 18
1. Assembly and Adjustment of Shutter and Transport Mechanism......................................... 19
a. Shutter Curtain Parts
b. Stopper (C1I)
c. Idling Gear Parts
d. Wind-Up Lever Seat (C35) and Top 1st Gear (C20)
e. Bounce Stopper Mechanism
f. Pinion Coupler Lever (E10) and Coupler Lever (C15)
2. Adjustment of Shutter Exposure Timing.......................………………………………….... 29
a. Curtain Speed
b. High Speed Exposure Timing
e. Irregularity of Exposure Timing
d. Slow Speed Exposure Timing
e. Time Exposure
f. Exposure Timing at Various Points on the Picture
3. Assembly and Adjustment of Exposure Counter ....…………………………………........ 34
4. Adjustment of X Contact .....................................……………………………………....... 36
5. Adjustment of FP Contact................................……………………………………........... 37
6. Adjustment of Mechanical Back........................…………………………………............. 37
7. Adjustment of Viewfinder Focus..........................………………………………….......... 38
CHAPTER III. FINAL TESTS..................................…………………………....................... 40
CHAPTER IV. CAUSES OF DEFECTS AND SERVICING.......……………………........... 44
ATTACHMENTS
List of Special Service Tools
List of Lube Oils
List of Bonds Exploded Illustrations
List of Service Parts
List of Standard Parts
230-2 -2
-