Flash Panasonic

ORDER NO. DSC0411018C0 B26

Flash Unit

DMW-FL28PP DMW-FL28E
Colour (K)...........Black Type

© 2004 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

DMW-FL28PP / DMW-FL28E

CONTENTS
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1 GENERAL DESCRIPTION 2 DISASSEMBLY & ASSEMBLY PROCEDURE 2.1. DIASSEMBLY PROCEDURE 2.2. ASSEMBLY PROCEDURE 2.3.DISASSEMBLY DIAGRAM 3 ELECTRICAL ADJUSTMENT 3.1. PREPARATION & SETUP 3.2. ADJUSTMENT PROCEDURES 4 CIRCUIT DESCRIPTION 4.1. Operation for control circuit power supply 4.2. Operation for converter oscillation circuit 4.3. Operation for constant voltage control circuit 4.4. Operation for flash circuit 4.5. Operation for modulated light circuit 4.6. Operation for SLAVE circuit 3 10 10 10 11 12 12 12 20 20 20 2020 20 20 4.7. Operation for auto check circuit 4.8. Operation for flash prohibition circuit 5 TROUBLESHOOTING 6 SERVICE HINT 7 SCHEMATIC DIAGRAMS 8 WIRING CONNECTION DIAGRAM 9 CIRCUIT BOARD ASSEMBLIES 10 EXPLODED VIEWS 10.1. FRAME & CASING SECTION 10.2. PACKING PARTS & ACCESSORIES SECTION 11 REPLACEMENT PARTS LIST 11.1. MECHANICAL REPLACEMENT PARTS LIST 11.2. ELECTRICAL REPLACEMENT PARTS LIST 12SCHEMATIC DIAGRAM FOR PRINTING WITH A4 SIZE

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1 GENERAL DESCRIPTION

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2 DISASSEMBLY &ASSEMBLY PROCEDURE
Refer to the “DISASSEMBLY DIAGRAM”.

2.1.

DIASSEMBLY PROCEDURE

1. Remove the battery lid unit (Ref. No. 18). 2. Unscrewed 4 screws (B16 - B19), and then remove the shoe unit (Ref. No. 43). 3. Remove the side rubber 1 (Ref. No. 26) and side rubber 2 (Ref. No. 27). 4. Unscrewed 4 screws (B7 - B10), and then remove the main case (C) (Ref No.3). Caution · Be careful of the highvoltage capacitor (Ref No. C3) when servicing. · Be sure to discharge the capacitor (Ref No. C3) to use the resistor for discharging (ERG5SJ102) after connecting between cathode of Ref No. D2 and battery terminal (-). 5. Remove the insulation sheet (Ref No. 24), and then unscrewed 3 screws (B3 - B5) with the battery case (Ref No. 14) is holding to up slightly. Remove the C.B.A. (A) and C.B.A.(B).. 6. Remove the 2 locking springs (Ref No. 44-1 and 44-2), and then unscrewed 2 screws (B20 and B21). Remove the main case (B) (Ref No. 2).

2.2.
2.2.1. 2.2.2.

ASSEMBLY PROCEDURE
Assembly of the Dial Knob (Ref No. 8-1 and 8-2) Assembly of the C.B.A.

Apply the grease to the operation part of main case (D) (Ref No. 4) when assembling the click spring (Ref No. 10-1 and 10-2).

Whenassembling the C.B.A., apply the grease to foil side of C.B.A. (A) where is located to jack spring and dial brush terminal after alcohol cleaning.

2.2.3.

Assembly of the Main Case (B)

Apply the grease to the part of click mold (Ref No. 16) is touched to the main case (B) (Ref No. 2), and then install to the main case (A) (Ref No. 1). Screwed 2 screws (B20 and B21).

2.2.4.

Installation ofthe Photo Transistor

Install the photo transistor (Ref No. PT2) to C.B.A. (A), and then confirm capacitor (Ref No. C11) is installed to the side of reflection umbrella to the main case (B) (Ref No. 2). Install the photo diode (Ref No. PD1), and then confirm it to the battery case side of main case (C) (Ref No. 3). Install the photo transistor (Ref No. PT1), and then confirm it to the side ofshoe unit.

2.2.5.

Layout of lead wire

The lead wire for SLAVE (black) and lead wire for AUTO (red and black) is located between the insulation sheet and C.B.A. (B).

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2.3.

DISASSEMBLY DIAGRAM

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3 ELECTRICAL ADJUSTMENT

3.1.

PREPARATION & SETUP

3.2.

ADJUSTMENT PROCEDURES

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