Confirmation Of Current Detection Protectors; Confirmation Of 12V Trigger Operations; Confirmation Of Output Sensor; Confirmation Of Key Operation - Onkyo TX-NR838 Service Manual

OPERATION CHECK-4

CONFIRMATION OF CURRENT DETECTION PROTECTORS

1. Do the following operation.
1-1. set the volume level to 25(TX-NR636, DTR-30.6) or 30(TX-NR737, 838, DTR-40, 50.5).
1-2. [TV/CD] + [ON/STANDBY] → [CBL/SAT]
1-3. [TONE - ]
to the following test mode.
TEST 1-09
2. Confirm that relay is not cut off even if you connect the following load A to the following channels one by one.
3. Confirm that relay is cut if you connect the following load B to the following channels one by one.
Channel FL, FR, C, SL, SR, SBL and SBR ch
Load A 3 ohm
Load B 1 ohm
CONFIRMATION OF 12V TRIGGER OPERATIONS . (The following model ONLY)
After checking that there is no output from the following output terminal, set the following test mode and confirm that
there is an output of the following power.
Output terminal
Test mode
Power
Applied model

CONFIRMATION OF OUTPUT SENSOR

1. Do the following operation.
1-1. set the volume level to 25(TX-NR636, DTR-30.6) or 30(TX-NR737, 838, DTR-40, 50.5).
1-2. [TV/CD] + [ON/STANDBY] → [CBL/SAT]
1-3. [TONE - ] *2 and (*3)
to the following test mode.
TEST 1-07
After lighting "FM STEREO" on the FL tube, the following relays break their connections and "FM STEREO" lamp goes off .
Relays RL643 and RL644
CONFIRMATION OF COOLING FAN OPERATION
1. Confirm fan that is not rotating.
2. Set the following test mode and confirm fan that is rotating at HIGH speed.
TEST 1-07
3. Set the following test mode B and confirm fan that is rotating at LOW speed.
TEST 1-08

CONFIRMATION OF KEY OPERATION

1. Do the following operation.
1-1. set the volume level to 25(TX-NR636, DTR-30.6) or 30(TX-NR737, 838, DTR-40, 50.5).
1-2. [TV/CD] + [ON/STANDBY] → [CBL/SAT]
1-3. [TONE - ] *4
to the following test mode.
TEST 1-06
2. Confirm each key and master volume operation.
3. If "ON/STANDBY" button is pressed, AVR escapes from this KEY test mode.
Therefor, press the "ON/STANDBY" button, after checking other buttons finished.
CONFIRMATION OF NETWORK
Please wait for about 1 minute after turning on the AVR when using the following test mode.
1. Connect the receiver to the router.
2. Do the following operation.
2-1. set the volume level to 25(TX-NR636, DTR-30.6) or 30(TX-NR737, 838, DTR-40, 50.5).
2-2. [TV/CD] + [ON/STANDBY] → [CBL/SAT]
2-3. [TONE - ] *5
to the following test mode.
TEST 1-05
3. Confirm that the AVR's display shows appropriate IP address.
TX-NR636/ 737/ 838/ HT-RC660/ HT-R993/ DTR-30.6/ 40.6/ 50.6
12V TRIGGER Zone2 12V TRIGGER A
TEST 1-09
12V +10%, -20%
/150mA
TX-NR838
TEST 1-08
and
(1)
12V TRIGGER B
TEST 1-09 TEST 1-08
12V +10%, -20% 12V +10%, -20%
/150mA /25mA
DTR-30.6, DTR-40.6, DTR-50.6
Connection
ETHERNET connector
(2) (3)
12V TRIGGER C
TEST 1-07
12V +10%, -20%
/25mA
Ethernet
cable