Yamaha DPX-530, Руководство по обслуживанию

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DPX-530
2
DPX-530
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SAFETY PRECAUTIONS
FUNCTION MENU
(SETTING MENU ONLY FOR SERVICE) ............ 26
REPLACEMENT OF THE MAIN PCB ASS'Y ........... 27
REPLACEMENT OF THE TERMINAL PCB ASS'Y ........ 28
DOWNLOAD OF THE FIRMWARE ..................... 29–30
ELECTRICAL ADJUSTMENTS ........................... 31–35
DIAGNOSIS INFORMATION ................................ 36–37
DIAGNOSTIC SOFTWARE, TO READ WARNING
HISTORY .......................................................... 38–39
DIAGNOSIS FLOW CHART ................................. 40–41
PRINTED CIRCUIT BOARD ................................ 42–47
WIRING DIAGRAM ..................................................... 49
SCHEMATIC DIAGRAM ....................................... 50–54
IC BLOCK DIAGRAM ........................................... 55–65
PARTS LIST .......................................................... 66–71
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CONTENTS
SAFETY PRECAUTIONS ......................................... 2–3
PRECAUTIONS FOR RESOLDERING ........................ 3
WARNING: CHEMICAL CONTENT NOTICE .............. 3
PREVENTION OF ELECTROSTATIC DISCHARGE ..... 4
CONTROL AND FUNCTIONS ................................. 4–5
INDICATORS ................................................................ 6
SPECIFICATIONS ..................................................... 7–8
DIMENSIONS ................................................................ 8
REPLACING THE LAMP ........................................ 9–10
ATTACHING A LENS FILTER AND CAP ................. 11
PCB ASS'Y LOCATION ............................................. 12
DISASSEMBLY PROCEDURES .......................... 13–21
LEAD DRESS ....................................................... 22–24
SERVICE COMMANDS .............................................. 25
LIFE TIME OF THE CONSUMABLE PARTS ........... 25
NOTICE: Observe all cautions and safety related notes located inside the cabinet and on the chassis.
Warning
1. Operation of this projector outside the cabinet or with the cover removed presents a shock hazard from the projector power
supplies.
2. Grounding circuit continuity is vital for safe operation of equipment. Do not remove ground connection while the power cable
is still connected to the supply. Disconnect supply before servicing.
Leakage current check
Before returning the projector to the customer, it is recommended that leakage current be measured according to the
following methods.
1. Cold check
With the AC plug removed from the AC 100 to 240 V, place a jumper across the two AC plug prongs. Turn the projector AC
switch on. Using an ohm-meter, connect one lead to the AC plug and touch the other lead to each exposed metal part
(metal cabinet, screwheads, metal overlays, etc.), particularly any exposed metal part having a return path to the chassis.
Exposed metal parts having a return path to the chassis should have a minimum resistance reading of 1 megohm. Any
resistance below this value indicates an abnormality which requires corrective action. Exposed metal parts not having a
return path to the chassis will indicate an open circuit.
2. Hot check
Use the circuit in figure to perform this test.
(1) With switch S1 open, connect the projector to the measuring circuit. Immediately after connection, measure the
leakage current using both positions of switch S2, and with the switching devices in the projector in all of their
operating positions.
(2) Switch S1 is then closed, energizing the projector. Immediately after closing the switch, measure the leakage current
using both positions of switch S2, and with the switching devices in the projector in all of their operating positions.
Current measurements of items (1) and (2) are to be repeated after the projector has reached thermal stabilization.
The leakage current must not be more than 0.5 milliampere.
V
S1
S2
GH
(grounding)
open
Grounding supply conductor
B
Insulating table
Projector
A
AC milliammeter
AC 100 to 240 V
North America