Starting Diag; Starting Diag In The Protection Cancel Mode; Canceling Diag; Display Provided When Diag Started - Yamaha RX-V1200 Service Manual

RX-V1200/RX-V1200RDS/HTR-5490/RX-V2200

• Starting DIAG

Press the "STANDBY/ON key while pressing those two keys indicated in the figure on
the right.

• Starting DIAG in the protection cancel mode

If the protection function works and causes hindrance to trouble diagnosis, cancel the
protection function as described below, and it will be possible to enter the DIAG mode.
(The protection functions other than the excess current detect function will be
cancelled.)
Press the "STANDBY/ON key while pressing those two keys indicated in the figure on
the right. At this time, keep pressing those two keys for 3 seconds or longer.
In this mode, the "SLEEP" segment of the FL display of the main unit flashes to indicate that the mode is DIAG mode with the
protection functions cancelled.
CAUTION!
Using this product with the protection function disabled may cause damage to itself. Use special care for this point when
using this mode.

• Canceling DIAG

[1] Before canceling DIAG, execute setting for PRESET of DIAG menu No.12 (Memory initialization inhibited or Memory
initialized).
* In order to keep the user memory stored, be sure to select PRESET INHI (Memory initialization inhibited).
[2] Turn off the power by pressing the "STANDBY/ON" key of the main unit or the "STANDBY" key of the remote controller.

• Display provided when DIAG started

When the monitor is connected, DIAGNOSTIC MENU appears on its screen as
shown in the figure. (It remains on display until DIAG is cancelled.)
The FL display of the main unit displays the protection function history data and the version (1 alphabet) and the DIAG menu
(sub-menu (ANALOG BYPASS) of DIAG menu No.1 YSS938) a few seconds later.
When there is no history of protection function:
Opening message
When there is no history
of protection function
When there is a history of protection function:
When there is a history of
protection function due to
excess current
17
DIAG menu display
Version (1 alphabet)
After a few seconds
Cause: An excessive current flowed through the power amplifier.
Supplementary information: As current of the power transistor is detected, the
Version
(1 alphabet)
abnormal channel can be identified by checking the current detect transistor.
Turning on the power without correcting the abnormality will cause the protection
function to work immediately and the power supply will instantly be shut off.
Keys of main unit
PRESET/
A/B/C/D/E TUNING
Turn on the power while
pressing these keys.
DIAGNOSTIC MENU
1.DSP THR 10.MAN' LTEST
2.YSS-CS 11.RS232C
3.CS-YSS 12.PRESET
4.CS49329 13.AD/FAN
5.HP ROUTE 14.STATUS
6.RAM THR 15.DSP RAM
7.PRO LOGIC 16.CS DL COD
8.SP SET 17.SOFT SW
9.VFD CHECK 18.VER/SUM/P