Apply the transaction currency symbol on the Advanced Invoice PDF print-out depending on the set currency.

1. Navigate to Customizations > Forms > Advanced PDF/HTML Template 
2. Preferred Advanced PDF/HTML Template : Click Edit
3. Upper Right Corner: Toggle Source Code
4. Refer below:

<tr class="totalrow">
	<td background-color="#ffffff" colspan="4"> </td>
	<td align="right"><b>${record.total@label}</b></td>
	<#assign default_currency = record.total?string.currency />
	<#if record.currency="JPY">
	<td align="right">${default_currency?replace("$","¥")}</td>
	<#else>
	<td align="right">  ${default_currency}</td>
  	</#if>
	</tr>
</table>

4. Click Save