Summary of Contents for GLOBAL RECORDINGS MESSENGER-II
- Page 1 MESSENGER-II HAND-WIND CASSETTE PLAYER SERVICE MANUAL GLOBAL RECORDINGS NETWORK AUSTRALIA Locked Bag 9019 Castle Hill NSW 1765 AUSTRALIA Email: au@globalrecordings.net Phone: +61 2 9899 2211 Fax: +61 2 9899 2602 (A.C.N 000 260 033) Revised June 2004...
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Page 2: Table Of Contents
“prevention is better than cure”, and we strongly recommend that where any “Messenger-II” players are put into use that those using them should be given careful instructions in the basic care and maintenance of those players. - Page 3 2. Optional a. Oscilloscope b. Frequency counter ) desirable for major servicing c. Cassette Torque Meter ) centres. d. Signal Generator - helpful for trouble shooting of circuit board. MEASUREMENTS & ALIGNMENT 1. Supply voltage for testing: 6v +/- 0.2v Measure the voltage across supply used for testing, with 1Khz tape playing at full volume into dummy load (fitted to external speaker socket).
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Page 4: Introduction
Regular experience in maintenance and repair of the Messenger-II will soon help the novice to become familiar with the parts of the machine most likely to give problems. Those who only carry out repairs on odd occasion s or in emergencies need to take special care and be aware that hasty action or diagnosis of the problems may lead to a lot more expense and time expended than is really necessary. - Page 5 This is then amplified for the purpose of driving the speaker. SAMPLE PROCEDURE - 1 Symptoms of faulty player. The Messenger-II player will not operate at the correct speed when powered by its own generator. Preliminary Diagnosis At first consideration you cannot help but be equally suspicious of the three main areas - 1.
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Page 6: How To Order Parts
3. If Procedure 2 produces noise, proceed to check the playback head and its connections. Use a mutimeter to check the wires from the head to the amplifier board. if the connections are satisfactory the head should be replaced. Messenger-II PLAYER PARTS LIST HOW TO ORDER PARTS 1.INTRODUCTION a. -
Page 7: Messenger-Ii Disassembly And Servicing
Also describe the symptoms of the fault and the in-service age of the player. This will greatly help us to develop a better player for the mutual benefit of all users of these players. MESSENGER-II DISASSEMBLY AND SERVICING Please refer to Drg. M-02 To Open Case (See also drg. - Page 8 b) Before removing any part, note it’s position and method of retention. Also observe other associated parts which may be disturbed during removal, such as springs and washers. Very carefully remove the small components, such as ‘E’ clips, which may be easily lost. c) If the Flywheel is removed, care should be taken that its capstan shaft is not knocked in any way during handling.
- Page 10 Messenger-II PLAYER PARTS LIST CASE ASSEMBLY - No. C100 PART DESCRIPTION C101 Front Case Moulded ABS, includes C108 - C111. C102 Back Case Moulded ABS. C103 Speaker 3" dia, 8 ohms, 0.5 watt, Ferrite or Alnico type. C104 Speaker Clamps x2...
- Page 12 Messenger-II PARTS LIST GENERATOR ASSEMBLIES - NO. G100 PART DESCRIPTION G102 Pulley Wheel Moulded acetal G104 Generator Belt 2.2mm sq. section, polyurethane. G106 Pulley Wheel Shaft Machined steel, 5mm dia. G107 Gear Plate Pressed Steel, galv., 20g G108 Gear Wheel...
- Page 14 MECHANISM ASSEMBLY - No. M200 PART DESCRIPTION 5E01 Reel cap circlip x 2 M1.5 5E02 Brake plate guide pin circlip x 3 5E02 Pinch Roller frame post circlip 5E03 Clutch swivil pin circlip 5E03 Head base guide circlip x 3 5M108 Motor screw sleeve (x3) Machined brass...
- Page 15 SUB-ASSEMBLIES 5M110 Drive Motor Assembly 5M109 Drive motor Mabuchi EG-510D-6F2, 6v, 2400rpm 5M111 Drive motor pulley 5P106 Cable Tie 150mm 5M115 Pinch Roller Assembly 5M136 Pinch roller M130OD x 6.5 x 2.5 bore 5M137 Pinch roller axle M11.2 x 2.5 5M138 Pinch roller frame 5M130 Button frame assembly...
- Page 17 MESSENGER PLAYER PARTS LIST A.C. POWER SUPPLY ASSEMBLY NO. P100 PART DESCRIPTION 5P101 Transformer 110/24v, 60Hz: 7v x 2, 250mA 5P102 A.C. Socket Hosiden type No. HSC0438 5P103 A.C. Socket back cover Hosiden type No. HSC0438-03-010 5P104 Selector plate Moulded glass filled nylon 5P107 Cable Tie x3 5P108...
- Page 18 CIRCUIT BOARD ASSEMBLIES B601 & B602 5B601 Circuit Board Assembly (plain) 5B600 Circuit Board ex supplier 5B202 Volume Control wheel 5B208 Side plate 5B213 Pin connector (3 pin) 5B214 Polarised Header 5S01 Volume Control screw M1.7 x 5 machine screw 5B602 Circuit Board Assembly (power) 5B601...
- Page 19 Note: Power and non-power versions are identical, except that non-power models may have components IC2, D3-D5,C19 omitted.
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Page 21: Trouble-Shooting Guide
MESSENGER PLAYER – TROUBLE-SHOOTING GUIDE The following is an outline of some possible causes of faults that may occur in the player. SYMPTOM POSSIBLE CAUSE 1. No Action – when * No power to player – (not switched on at power source. Play button not operating from external power depressed, batteries flat, broken power lead.) * Switches dirty...
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