JVC GY-HM150U Service Manual page 15

4.2.2 Setting Serial No.
Measuring
No. Item Instrument &
Input Signals
1 Setting se- ---
rial number
4.2.3 Deck Adjustment
Measuring
No. Item Instrument &
Input Signals
1 Built-in MIC • Audio tester
L/R level • Speaker
balance
Measuring Point (A)
Mode Adjustment Points (B)
Adjustment Level (C)
EE (A)---
(B)EEPROM Menu
(C)Serial number
Measuring Point (A)
Mode Adjustment Points (B)
Adjustment Level (C)
EE/Video mode (A)A/V OUT (Audio OUT)
(B)60 Hz(NTSC):1710h
50 Hz(PAL) :6710h
(C)Minimize the level differ-
ence between the left and
the right sides.(Should be
within ±2.5dB)
Adjustment Procedure
(1) Input the serial number.
Input a number into the item of "Serial No."
in EEPROM Menu in SERVICE MENU.
(Refer to 5.1.6 EEPROM Menu. A serial
number is 8 figures.)
Adjustment Procedure
• Adjust in 60 Hz(NTSC), the value is also writ-
ten in the 50 Hz(PAL) address.
(1) Set the unit 20 cm or more distance from
the speaker, facing the built-in MIC
straight to the speaker.
(2) Output about 300 Hz sine-wave sound.
Set the output level so that the audio out-
put of the unit stays 400 to 700mVrms.
(3) Adjust to minimize the level difference be-
tween Lch and Rch.
20 cm or more
Speaker: 300 Hz sine wave
(No.HC044<Rev.001>)1-15