Table of Contents
Advertisement
MEX-DV150UE/DV1500U/DV1505U
SERVO SECTION
If any of the following parts was replaced, perform the "IOP
Check" as mentioned below.
• Optical pick-up block (chassis (OP, ZA) complete assy
• Mounted SERVO board
Precaution
Use the following tools and measuring devices.
•
Extension jig (Part No. J-2502-062-1) between the SERVO
board and the MAIN board
•
DVD test disc TDV-540C (Part No. J-2501-235-A)
•
CD test disc PATD-012 (Part No. 4-225-203-01)
•
Driver for adjustment
•
TV moniter
•
Digital voltmeter
•
Oscilloscope
•
Accessory remote commander RM-X168
IOP CHECK
Connection:
SERVO board
TP51 (IOPDVD), TP47 (IOPCD)
TP63 (A3.3V)
Procedure:
1. Check the IOP value of DVD and CD by label on the optical
pick-up.
Optical Pick-up Label:
2. Connect a digital voltmeter to TP51 (IOPDVD) and TP63
(A3.3V) on the SERVO board.
3. Playback the DVD test disc (TDV-540C), and make a note of
the value of digital voltmeter.
4. Divide the measured voltage value by 1, and convert it into
current value.
5. Check that the calculated value is within ±6 mA to the IOP
value given on the label.
6. Connect a digital voltmeter to TP47 (IOPCD) and TP63
(A3.3V) on the SERVO board.
7. Playback the CD test disc (PATD-012), and make a note of the
value of digital voltmeter.
8. Divide the measured voltage value by 1, and convert it into
current value.
9. Check that the calculated value is within ±6 mA to the IOP
value given on the label.
16
SECTION 4
ELECTRICAL CHECK
digital voltmeter
+
–
CD IOP value
DVD IOP value
Check Location:
– SERVO Board (Conductor Side) –
TP47
TP51
(IOPCD)
(IOPDVD)
TP63
(A3.3V)
Advertisement
Table of Contents
