PRODUCT No. 23602
ASAHI PENTAX
SERVICE MANUAL
B.Disassembly
There are some parts which have to be taken off with careful treatment.
1.Top cover (A300) removal
Wind lever should be set at closed position before taking off top cover.
AT CLOSED POSITION |
AT PREADVANCE ANGLE |
Fig. 1 |
Fig. 2 |
2.Photo sensor circuit board assembly (T300) removal
K2 camera is controlled with very small electric current (ex. 200pA or 300pA), therefore all electric parts should be treated carefully, especially, photo sensor circuit board; it is so sensitive that it should not be touched with bare hands.
Fig. 3
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3. P.C. board attern assembly (T100) removal P.C. board pattern assembly (T100) can be taken out with or without removing Front Board.
Pull it out hooking the large black I.C. with spring hanger. Don't touch the other I.C.s or electric parts.
Fig. 4
4. Front board removal Front board can be removed without taking off Self-Timer lever or covering, as shown in photograph.
Fig. 5
5.Shutter mechanism (E000) removal
Shutter mechanism (E000) is so delicate and sensitive that it should not be touched with bare hands except the parts as shown in the photograph. It may cause malfunctions if handled roughly.
Use finger cover for removal.
Fig. 6
Fig. 7
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C. Assembly and adjustments
Some parts should be assembled and adjusted. with careful treatment as shown in the following.
1.Winding stopper assembly (0-C6)
Fig. 8
2. Winding spring (0-C23) Face the retainer screw of spring in the direction of Tripod socket, and wind the spring a little and stretch it in the direction of tripod seat. The proper tension is obtained when it is stretched around Tripod socket
Fig. 9
3.Perforation Adjustment
There are several kinds of 2nd gear (C205) which are selected to achieve the proper position of socket teeth. After removing 2nd gear, set sprocket (C9) in the correct position using the tool (23600 N-A1, C9-A)
Fig. 10
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Wind up top 2nd mech. plate assembly (C200) with driver and loosen wind shaft without moving main gear. Then give back-tension to sprocket gear (C16)
Choose the proper coupling 2nd gear (C205) and install it in the above-mentioned way.
Fig. 11
4.Memory block assembly (T400)
After cocking mirror housing, 02mm clearance is necessary between delrin and the longer contact piece of memoiy block (T400) — See Fig. 12 A
After releasing mirror housing and when mirror stays up, also 02mm clearance is necessary between two contact pieces of memory block. See Fig. 12 B
Fig. 12
5.Shutter dial seat assembly (F000)
Set shutter dial at “B”, and pull meter coupling plate assembly (0-A8) toward counter dial block. Otherwise, shutter mechanism will not work properly.
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