Sony Walkman PCM-M1, Service Manual

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4. Types of test mode
5. How to set the test mode code
•
Test mode display
Note: The display during the test mode can be changed by pressing the COUNTER key of the machine. However, confirm the current test
mode by selecting the test mode display (REMAIN).
1). The segment value of the test mode code can be incremented or decremented by pressing the MODE key (up) or the CLOCK key
(down).
MODE key (up)
→
01
→
02
→
20
→
21
→
22
→
23
→
24
→
25
→
30
→
31
→
32
→
40
→
42
→
43
→
44
→
99
→
01......
CLOCK key (down)
→
01
→
99
→
44
→
43
→
42
→
40
→
32
→
31
→
30
→
25
→
24
→
23
→
22
→
21
→
20
→
02
→
01......
2). The selected test mode code can be set by pressing the ENTER key. (The selected test mode code flashes before it is set.)
3). The speed mode can be incremented or decremented by pressing the key (up) or VOLUME - key (down).
VOLUME
+
key (up)
→ ×
1FWD
→ ×
0.5FWD
→ ×
1.5FWD
→ ×
3FWD
→ ×
25FWD
→ ×
4FWD
→ ×
1FWD......
VOLUME
−
key (down)
→ ×
1REV
→ ×
0.5REV
→ ×
1.5REV
→ ×
3REV
→ ×
25REV
→ ×
4REV
→ ×
1REV......
4). The error code can be reset by pressing the COUNTER RESET key during test mode.
5). Modify the adjustment value during the SWP (switching pulse) adjustment and the record current adjustment by pressing the VOLUME
+ key (up) or VOLUME - key (down).
Test mode code Contents
01 Normal operating mode.
02 Error rate measurement mode.
20
21
22
Aging mode
23 (This is the mode for evaluation, and is
not used in service.
24
25
30
End sensor check mode.
(Pulse drive under condition of FF/REW.)
31
End sensor check mode.
(Pulse drive under condition of REW.)
32
T-reel lock check mode.
(Under condition of FF/REW.)
40
Mechanism deck independent operation
mode.
42 Tape pass adjustment mode.
43 Record current adjustment mode
99 Error code history check mode.