Operation Check; Version Confirmation; Confirmations Of Operations - Onkyo TX-8020B Service Manual

OPERATION CHECK-1

1.VERSION CONFIRMATION

Press [Display] + [Standby]
The version of main micom is displayed at FL tube.

2.CONFIRMATIONS OF OPERATIONS

Protect operation check
2-1. Voltage protection
a. Set to 1-05 of the TEST MODE
Refer to "4.TEST MODE" in OPERATIO CHECK-2
b. The speaker relay become OFF immediately after "D.C. 1.5V inputs" to CD SELECTOR to check L and R.
The same as above when "D.C. -1.5V" inputs at each place.
NOTE 1: Limit time to apply voltage is 0.5-1.0 seconds each channel.
When protection operation does not occur at once, try several times.
NOTE 2: Don't connect load nor short speaker terminals.
2-2.Current protection
a. The unit receives the remote control signal D22F D1(K114) +D22F D9, it goes into the test mode (1-05)
b. The relay shall be ON when 2 ohm load is connected to each channel under the conditions of
peak-to-zero 20V output for L,R channels and no load by using the INTEGRA ampifier series
designated circuit with 50Hz square wave.
c. The relay shall be OFF when 0.5 ohm load is connected to each channel under the conditions of
peak-to-zero 20V output for L,R channels and no load by using the the INTEGRA ampifier series
designated circuit with 50Hz square wave.
2-3. CONFIRMATION OF REMOTE CONTROL OPERATION
a. Confirm that the specified operations for each button are made.
b. Connect a compatible with RI unit, and confirm its operations.(RCA pin cord must be connected simultaneous)
CONFIRMATION OF RDS (RADIO DATA SYSTEM) OPERATION (Applied to MPP type )
2-4.
a. Input 98MHz,30dBμ signal modurated with RDS data.
b. When a PS information is received, the name of the station "RDS TEST" shall be displayed within 2 seconds
instead of the frequency.
2-5. CONFIRMATION OF HEAD PHONE OPERATION
a. Insert headphones plug in headphones Jack and confirm that the speaker output disappearing and the headphones
indicator of the display turn on. into the PHONES jack.
b. Confirm that the output of SW_OUT in conjunction with speaker output A does not appear.
2-6. CONFIRMATION OF OUTPUT SENSOR AND THERMAL SENSER
a. Make volume level 5 .and Push ENTER_KEY.+STANDBY_KEY then Display (temperature ,VOLH,TAP) to FL TUBE.
Confirm outside temperature ±20C is displayed immediately after energizing.
Note that the error margin is caused by the rise of the temperature of the heat sink when time passes.
b. Confirm that turn the volume, and a value of VOLH changes.
*If there is input, VOLH changes.
2-7. MISCELLANEOUS
a. Confirm all input and output terminals operate normally.
b. Confirm FL TUBE TEST MODE
Please confirm FL displaying by the FL test mode.
And confirm the destination setting.
c. Confirm Key Operation
Confirm that the operation of all buttons and knobs works properly by the use of KEY test mode.
Table
TX-8020 EU R : MPP
TX-8020 US : MDC
TX-8020