Test Mode - Sony HCR-S7AV Service Manual

Note: Use following buttons in the test mode.
no mark : Button of Tape unit (TC-S3)
*1 : Button of amplifier unit (TA-S7AV or TA-S3)
*2 : Button of CD unit (CDP-S3)
[MC Test Mode]
Enter the MC Test Mode
Procedure:
1
1. Press the / * button to turn the power on.
I 1
[PLAY MODE]
2. While pressing the both
[DISC 3]
2
press the * button.
3. "GROOVE" indication blinks on the fluorescent indicator tube
in the midst of MC test mode.
Releasing the MC Test Mode
To release from this mode, press the
the power cord.
[DECK Test Mode]
In the DECK test mode, it operates as follows.
Cancellation of the linear mute of DOLBY IC (IC301)
• It become cancellation automatically when it is possible to en-
ter a MC test mode.
AMS checking
Procedure:
1. Enter the MC test mode.
2. Insert a test tape AMS-110A or AMS-120 to Deck A.
3. Set TAPE A function.
[CD SYNC]
4. Press the button to enter the AMS test mode.
5. After a tape is rewound first, the FF AMS is checked, and the
mechanism is shut off after detecting the ASM signal twice.
6. Then the REW AMS is checked and the mechanism is shut off
after detecting the AMS signal twice.
7. When the check is complete, a message of either OK or NG
appears.
(To check an AMS of the B deck, select TAPE B function.
[CD SYNC]
After that, press .)
SECTION 4

TEST MODE

[ ]
2 2
* and x * buttons,
1
I / 1 * button or disconnect
ALC checking
Procedure:
1. Enter the MC test mode.
2. Insert a tape into Deck B.
3. During Recording, Keep holding down the below keys.
[ ] [REC PAUSE/START]
2
* +
x
ALC could keep ON while these keys keep being pressed, ALC
could keep OFF while keys are released.
Double speed REC mode
Procedure:
1. Enter the MC test mode
2. Insert a tape into Deck B.
3. During Recording, keep holding down the below key.
[HI-DUB]
Double speed recording is going on while the key keeps being
pressed.
REC/PLAY checking
• The mode to PLAY by rewinding recording contents automati-
cally.
Procedure:
1. If recording A surface, it returns automatically at the point of
the recording beginning and it replays when pressing
[ ]
TAPE B M .
2. If recording B surface, it returns automatically at the point of
the recording beginning and it replays when pressing
[ ]
TAPE B .
m
TC-S3
9