Sony Discman D-T2
In article , J.B. Wood wrote: Hello, all. Don't really have a repair issue but could use some clarification from anyone familiar with the ca. 1989 subject device. (The D-T2 is the model D2 with the addition of an AM/FM tuner.) The unit uses 4 AA batt but can be powered externally. The DC input jack on the back of the player is labeled for 9 VDC and the user manual confirms this is the voltage that an external source should supply. The AC adapter that was supplied with the player is a Sony AC-9W which supplies 6 VDC vice 9 VDC. The Discman works OK with the 6V adapter but the service manual for the model D2 (found a copy online) cites the correct AC adapter as model AC-940, which is rated at 9 VDC output. If the AC-9W provides regulated 6V (probably does) you should be safe. The DC input probably uses a standard (vs. low dropout) voltage regulator that does not kick in until the input voltage is 2.5V above the target (i.e. 6V + 2.5= 7.5V). Hence the nominal 9V input. |
Sony Discman D-T2
In article , Mike S. wrote: In article , J.B. Wood wrote: Hello, all. Don't really have a repair issue but could use some clarification from anyone familiar with the ca. 1989 subject device. (The D-T2 is the model D2 with the addition of an AM/FM tuner.) The unit uses 4 AA batt but can be powered externally. The DC input jack on the back of the player is labeled for 9 VDC and the user manual confirms this is the voltage that an external source should supply. The AC adapter that was supplied with the player is a Sony AC-9W which supplies 6 VDC vice 9 VDC. The Discman works OK with the 6V adapter but the service manual for the model D2 (found a copy online) cites the correct AC adapter as model AC-940, which is rated at 9 VDC output. If the AC-9W provides regulated 6V (probably does) you should be safe. The DC input probably uses a standard (vs. low dropout) voltage regulator that does not kick in until the input voltage is 2.5V above the target (i.e. 6V + 2.5= 7.5V). Hence the nominal 9V input. ^^^^ |||| Sorry, make that 8.5V. Coffee not yet in bloodstream as yet. |
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