Yamaha RX-V990, Service Manual

Page: 6 / 85

RX-V990
CONTENTS OF DIAG. OPERATIONS
• DIAG. MENU can be selected by pressing the PRESET
STATIONS key of the front panel or PROGRAM key of
the remote control transmitter.
• Each DIAG. MENU has a SUB-MENU. Every time the
same key, PRESET STATIONS key of the front panel or
PROGRAM key of the remote control transmitter is
pressed, another SUB-MENU is selected.
• While the diagnostic mode is set, function of power on/
off, selecting an input source, adjusting master volume
and effect level are available.
• The contents of each DIAG. MENU are as follows.
No. DIAG. Menu Sub Menu
1
MAIN BYPASS EFFECT LEVEL 60 (-10dS)/80 (OdS)
2 FRONT RAM THR EFFECT LEVEL 60 (-10dS)/80 (OdS)
3 MAIN DSP THR EFFECT LEVEL
100 (+10dS)/60 (-10dS)/80 (OdS)
4
EFFECT OFF/DISP EFFECT OFF/DISPLAY CHECK
5 MANUAL TEST TEST: LEFT/CENTER/RIGHT/SUR
6 PRO LOGIC CENTERNORMAUCENTER WIDE/CENTER
PHANTOM/BYPASS/CINE EO.ON (Note1)
7
FACTORY PRESET KEEP DATNFACTORY PRESET
8
AD CHECK MODE
KEY AD
&
OTHER AD CHECK
9
EXIT (Note 2)
-
Note 1: CI N E EO ON appears but such function is not
provided.
Note 2: No.9 menu item is available only through the
remote control.
5
FL DISPLAY
When the DIAGNOSTIC mode is set, the initial display
appears on the FL display followed by the DIAGNOSTIC
display (No.1).
The initial display can be redisplayed by pressing the AlB/
C/D/E key (but not when performing
AD check by using
DIAG. No.8).
• Components of initial display (Example)
[3= ~CJ 40
t t
RXV990U
**
t t
Protection AD
Message value
Model
&
ROM
Market version
[Protection message]
When the protection function activated, the protection mes-
sage is displayed and the power is turned off.
Instantly ~ "1 I"
After about 0.5 seconds ~ "2 PS"
After about 2 seconds -
"3 DC"
Correct the faulty part according to the protection message.
Protectionmessage
Cause
1 I
An abnormalcurrentflowedto the poweramplifier.
2 PS
Abnormalconditionoccurredin the powersection.
3 DC
DCis detectedin the outputof the poweramplifier.
[AD value to Model
&
Market relation]
AD value (+3) Model& Market
Remarks
10 RXV990 R
**
R : General model
40 RXV990 U" UC : USA
&
Canadian models
40 RXV990 A
**
A : Australian model
70 RXV990 L" G : European model
• Components of DIAGNOSTIC display
1
DIAG.tmenu
CD
+
MAIN BYP 60
operat{on display Input source
No.
*Supplement
When in the DIAG. mode, lighting of all segments of
the tuning meter for catalogue photographing can be
reserved by using the EFFECT key. (Do not use this
function as it is not intended for servicing.)
With such reservation
made, all segments of the tun-
ing meter light when the tuner function is selected in
the normal mode. (This reservation is effective once
only at the next POWER ON. After that, normal meter
operation is provided.)
Content
FL display
Reservation of full scale
T-METER ON
Reservation of normal
T-METER OFF